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• What is a Crusher Pulley and Why It Matters？

  Jun 09, 2026

  Most people focus on concaves, jaw plates, and blow bars. The crusher pulley is rarely mentioned. But when the pulley fails, the whole crushing line stops. No power transmission means no crushing. At ONA, we manufacture high-quality crusher pulleys. Here’s what you need to know. A crusher pulley mounts on the input shaft. The motor drives it through V‑belts, and it transfers rotational power to the eccentric shaft or the countershaft. Without a pulley, there is no power. Without power, there is no crushing.   Why the Pulley Matters More Than You Think？ First link in the drive chain – A poor pulley causes vibration, misalignment, and belt damage. Dynamic balance requirement – An unbalanced pulley shakes the entire crusher, wearing bearings and loosening bolts. Belt and bearing protection – Worn grooves destroy belts quickly; misalignment overloads bearings.   What are the Parts Included in the Pulley? Eg：HP400 ONA-7068606761 Pos Part No. Description Qty Net Wght 1 ONA-7003234746 PULLEY, V-BELT 1 255 2 ONA-7003241824 HUB 1 25 3 ONA-1047009520 PARALLEL KEY 1 0.9 4 ONA-7015778304 BUSHING 1 2.3     Advantages of ONA Pulleys: Precision Machining – Strictly controlled according to OEM drawings for a perfect match. Dynamic Balancing Test – Verified before shipment for smooth operation. Dual Connection Methods – Keyway or tapered sleeve for easy installation without damaging the shaft. Full Range Compatibility – Covers mainstream brands of jaw crushers and cone crushers. Customization Service – Provide drawings, samples, or model numbers for precise production.     ONA Pulley ONA's pulleys are core transmission components designed specifically for jaw and cone crushers. They are not only available in a wide variety to perfectly fit the full range of models from mainstream brands such as suitablefor Metso and Sandvik, but also based on precision machining and reliable dynamic balancing to ensure stable and efficient equipment transmission. What Models of Pulley Do You Offer? Suit Metso HP4, HP6, HP200, HP300 ,HP400, HP500, HP800, G10SEC, GP11F, GP220, GP300, GP300S, GP500S, C80, C96 C106, C110, C120, C125, C140, C145, C160, C200, MP1250, NP1315, NW100HPC, NW200HP, LT1100, LT200HP, OMNI1560, CVB1540, CVB2025-2 Sandvik CH440, CH880, H8800, CJ612 Barmac B9100SE Symons 4.25FT Trio TC36, TC51 Others ST4.8, TS300, TS500     Simple Maintenance Tips for Longer Pulley Life Inspect groove wear every 500 hours. Replace the pulley if side wear exceeds 1 mm. Tighten taper lock bolts to the specified torque using a torque wrench. Align the pulley with the motor sheave using a straight edge or laser alignment tool. Listen for unusual wobble or clicking sounds during operation. Replace the pulley immediately if any crack is found.   The crusher pulley is a precision power transmission component. When it works well, you don’t notice it. When it fails, your production stops. ONA supplies durable, precision‑balanced pulleys for jaw and cone crushers – in stock or custom‑made. Keep your crusher running.     All names, marks, models, symbols and descriptions are used for reference purposes only and it is not impied that any of the parts/brands listed are the product of any company other than ONA. We are not agents or distributors for any of the above mentioned brands nor do we have any commercial relationship or association with them.    

  Hot Tags : cone crusher metso hp300 spare parts sandvik ch440 cone crusher pulley metso hp200 cone crusher pulley hp 300 metso pulley metso hp200 spare parts pulley

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• Which Pump Does Your HP Crusher Really Need?

  Jun 04, 2026

  If you have ever searched for a replacement pump for your cone crusher suitable for Metso HP series, you may have noticed conflicting names: gear pump, hydraulic pump, and lube oil pump. Along with HP crusher wear parts, getting the right pump is essential for keeping your machine running. Which one do you actually need? Getting it wrong means ordering the wrong part and extending downtime. This short guide explains what each pump does, why they are different, and how to choose the right one. What Are the Two Pump SystemsThe HP series (multi‑cylinder cone crusher) has two independent fluid circuits. The lubrication gear pump circulates oil to the eccentric bushing, main shaft bearings, and gear set. The hydraulic pump supplies pressure to the clamping cylinders, tramp release cylinders, and the hydraulic motor that rotates the bowl for setting adjustment. Both are gear‑type pumps, but they serve completely different functions.Why the Difference MattersOrdering the wrong pump will not work. The lubrication pump runs continuously whenever the crusher operates; it provides relatively low pressure but high flow for cooling and lubrication. The hydraulic pump operates only when adjustment or tramp release is needed; it delivers higher pressure for cylinder actuation. Their mounting flanges, drive couplings, pressure ratings, and part numbers are different. Installing a hydraulic pump into the lubrication circuit will cause immediate failure – and vice versa. How to Identify the Right Pump for Your HP Crusher1. Check the symptoms and locate the pump Low oil pressure, high temperature or a noisy pump indicates a lubrication circuit problem, which means you need a gear pump (lube pump) usually mounted on the oil tank or crusher base frame and driven by an electric motor. Slow CSS adjustment, inability to hold clamping pressure or tramp release failure indicates a hydraulic circuit problem, which means you need a hydraulic pump, typically mounted on a separate hydraulic power unit. 2. Use the correct part numberWhether you need a lubrication pump or a hydraulic pump, for HP series or GP series, or any other brand, just provide your original part number. ONA will supply the exact replacement pump you need. No confusion, no wrong parts. The table below lists the part numbers of some best-selling lubrication and hydraulic pumps. ONA-N02152939 ONA-N02152934 ONA-MM0214352 ONA-N02150060-EO2 ONA-1059420078 ONA-N02150054 ONA-MM0221023 ONA-N02152933 ONA-MM0334642 ONA-N02150060 ONA-1059423014 ONA-442.4329-90 ONA-406203016993 ONA-1059420079 ONA-N02152936 ONA-N02150060_0 ONA-N02150055 ONA-MM0424386 ONA-MM0221024 ONA-MM0237480-IMP ONA-N02150058 ONA-SN303593 ONA-906.0141-00 ONA-MM0439134  ONA-706203016997 ONA-MM0237480 ONA-N02150061-IMP ONA-SN824648 ONA-906.0502-00 ONA-BG00516542 ONA-MM0237492 ONA-MM0237480-EO ONA-N02150061-EO2 ONA-MM0435144 ONA-442.6956-00 ONA-BG00517153 ONA-MM0407413 ONA-MM0237480-BRN ONA-N02150061 ONA-MM0512452 ONA-906.0400-00 ONA-MM0489086 ONA-MM0487405 ONA-7002480785 ONA-1059423011 ONA-MM0220525 ONA-452.1569-901 ONA-MM0415586 ONA-N02150053-IMP ONA-N02150052-IMP ONA-17-107-414-001 ONA-MM0223801 ONA-906.0397-00 ONA-N02480792 ONA-N02150053-EO2 ONA-N02150052-EO2 ONA-MM0407652 ONA-17-107-560-002 ONA-BG00517154 ONA-MM0444729 ONA-N02150053 ONA-N02150052 ONA-N02150060-IMP ONA-17-106-715-008 ONA-906.0140-00 ONA-1031-0089 Pumps for All Major BrandsONA supplies precision‑machined gear pumps for lubrication and hydraulic pumps suitable for Metso HP200, HP300, HP400, HP500, and other HP models. But we do not stop at HP – we also have pumps suitable for Metso GP series and suitable for Sandvik crushers. Whatever brand you run, just provide your original part number, and ONA will deliver the exact pump you need. Each pump is 100% pressure‑tested before shipment. So, which pump does your HP crusher really need? The right one is just a part number away. Trust ONA to deliver. All names, marks, models, symbols and descriptions are used for reference purposes only and it is not impied that any of the parts/brands listed are the product of any company other than ONA. We are not agents or distributors for any of the above mentioned brands nor do we have any commercial relationship or association with them.

  Hot Tags : metso hp crusher parts Pumps pumps for cone crusher parts metso crusher components gear pump stone crusher machine parts hydraulic pump lube oil pump for Mining Machinery sandvik cone crusher pumps

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• Why Does Your Cone Crusher Need a Torch Ring?

  May 26, 2026

  When browsing crusher parts, most people focus on mantles and bowl liners. But there is a small component among cone crusher parts that, if ignored, can turn a routine liner change into a costly nightmare. That part is the torch ring – also known as the burning ring or spacer ring, depending on the brand. Do you know why it matters for your crusher parts inventory? Torch Ring: A Small Part with a Big JobIn cone crusher maintenance, the component that sits between the mantle lock nut and the mantle goes by different names depending on the brand. For the multi-cylinder HP series, it is commonly called Torch Ring. Suitable for Metso single-cylinder crushers, it is often referred to as the Spacer Ring. Suitable for Sandvik tends to use the Burning Ring, while suitable for Telsmith and suitable for Trio also have similar parts under various names. Regardless of what you call it, its function is the same: to act as a sacrificial spacer that allows safe removal of the mantle during liner change. Position of the Torch RingEg： ONA-1063915676 HP400 Pos. Part No. Description Qty Net Wght 1 ONA-N55208522 BOWL LINER 1 1389 2 ONA-N55308511 MANTLE 1 1190 3 ONA-1063437880 BOWL ADAPTER RING 1 227 4 ONA-1086342846 WEDGE 6 2.4 5 ONA-1070516700 SHIM 6 0.2 6 ONA-1019579055 SCREW, SQUARE HEAD 6 1.5 7 ONA-1051486801 NUT, SPHERICAL 6 0.1 8 ONA-1056839401 NUT-LOCK 6 0.9 9 ONA-1003075440 COTTER PIN 5 0.02 10 ONA-N08010111 BACKING COMPOUND 5 10 11 ONA-1018780302 SQUARE 6 0.1 12 ONA-7002707040 SEAL, POLYURETHANE 1 0.75 13 ONA-1063915676 TORCH RING 1 6.2 Why Is It Important?When it is time to replace the mantle, the torch ring is designed to be flame cut. By cutting through this ring, the locking pressure is released, and the mantle can be removed without damaging the expensive head nut or the main shaft. After each use, the ring must be replaced. It is a one-time consumable part, yet it protects components that cost many times more.ONA Torch RingsONA supplies high-quality torch rings suitable for Metso, Sandvik, Telsmith, Symons, Trio, and other major cone crusher brands. Each ring is precision‑machined from easy‑to‑cut but strong steel, ensuring proper fit and reliable performance. We also offer custom orders based on your drawings. Brands Cone Crusher Models Part No. suit Metso GP100, GP200, GP200S, GP220, GP300, GP330, GP500, GP550, GP11F, G11MFINE, HP4, HP6, HP100, HP200, HP300, HP400, HP500, HP800, MP800, MP1000, MP1250, SG60110, OMNICONE 937 SX ONA-495349, ONA-1063915673, ONA-582729, ONA-949640452900, ONA-N12080205, ONA-N12080212, ONA-MM1318752, ONA-418658, ONA-909071, ONA-949641828500, ONA-1063915668, ONA-SN326407, ONA-1063915737, ONA-446421, ONA-447063, ONA-933335, ONA-1063915676, ONA-MM0539783, ONA-N12080208, ONA-N12080203, ONA-N12080207, ONA-N12080210, ONA-MM0543054, ONA-1063914652, ONA-MM0577429, ONA-MM1318244, ONA-1063914005, ONA-7012080200, ONA-MM0367200, ONA-1063915738, ONA-1063915735, ONA-MM1318402, ONA-17-303-957-501, ONA-1063915020, ONA-MM1318580  suit Sandvik CH660, CH440, H8800, H2800, S2800, H4800, S4800, H3800, S3800, H6800, H7800 ONA-452.0269, ONA-442.7115, ONA-442.9306-01, ONA-442.6217-01, ONA-442.7115-01, ONA-442.7911-01, ONA-452.0269-01, ONA-442.6427-01, ONA-452.0938-001 suit Telsmith 36-FC, SBS44 ONA-D272-454, ONA-BB-272-1333, ONA-d-272-454-c, ONA-A-272-454C, ONA-AB1-272-1208 suit Trio TC51, TC36, TC51 ONA-52131163, ONA-TC362 1006, ONA-TRIO17000498 suit Symons 4FT, 4.25FT ONA-6391 3321, ONA-6392 3321 Others HST250H ONA-11002001130, ONA-14036/1 Keep a spare torch ring in your inventory. Contact ONA for part number cross‑reference or a quote.All names, marks, models, symbols and descriptions are used for reference purposes only and it is not impied that any of the parts/brands listed are the product of any company other than ONA. We are not agents or distributors for any of the above mentioned brands nor do we have any commercial relationship or association with them.      

  Hot Tags : Torch ring for HP cone crusher Burning ring for Sandvik CH440 cone crusher Spacer ring suitable for Metso gp cone crusher parts Telsmith cone crusher parts Symons cone crusher parts Stone crusher parts burning ring

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• Does Your Jaw Crusher Need a Return Rod?

  May 22, 2026

  One single alloy steel rod keeps your toggle plate in place. When it breaks, your whole crusher stops. When discussing jaw crusher parts, most attention goes to jaw plates, cheek plates, and jaw crusher toggle plate. However, a small but vital component, the return rod or tension rod, is crucial for keeping the entire crushing mechanism intact. What Does the Return Rod DoThe return rod maintains constant contact between the pitman and the movable toggle plate, reducing impact wear. Each jaw crusher uses one rod, forged from high-strength alloy steel and heat-treated for strength and toughness. It works with a compression spring that pushes the toggle plate back after each stroke. Without proper tension, the toggle plate can slip, causing sudden crusher stoppage while the flywheel spins – a clear sign that the tension mechanism needs inspection. Return Rod Location in Jaw CrusherEg: C80  ONA-951199 Pos. Part No. Description Qty Net wght 10 ONA-951193 SPRING SUPPORT 1 18 11 ONA-951199 RETURN ROD 1 8.5 12 ONA-932064 SPRING GUIDE 1 3.5 13 ONA-902744 PROTECTION PLATE 1 8.3 14 ONA-704006490000 PIN, SPLIT 2 0.02 23 ONA-N01563030 NUT, HEXAGONAL 2 0.22 25 ONA-704207150000 WASHER 1 0.06 26 ONA-704205555000 CLEVIS PIN 1 2 31 ONA-7001530310 SCREW, HEXAGONAL 2 0.1 32 ONA-7001633016 WASHER, LOCK 2 0.007 33 ONA-7073215001 SPRING 1 15.5 34 ONA-7001530319 BOLT, HEXAGONAL 6 0.1 35 ONA-7001633016 WASHER, LOCK 6 0.007 36 ONA-N01616428 PIN, SPRING, SLOTTED, HEAVY DUTY 2 0.09 37 ONA-N01623116 WASHER, PLAIN 2 0.084 Most Common Failure ModesThe return rod operates under repetitive tension cycles, making it a sacrificial component designed to withstand thousands of load cycles before eventually fatiguing. The most frequent failure is a bent or fractured rod. When the rod breaks, the tension spring loses its preload, allowing the toggle plate to shift or fall completely out of its seat. A worn or weakened spring can also cause rod failure, as increased dynamic loads elevate the risk of fracture. Both scenarios result in unplanned shutdown and immediate replacement. ONA Return Rods Engineered for ReliabilityONA manufactures replacement return rods from high-strength forged alloy steel, precision threaded to match original specifications. Each rod is 100 percent dimensionally inspected and coated with anti-rust oil. For operators who prefer a full tension mechanism set, ONA offers return rods together with matching tension springs, spring seats, and adjusting nuts as complete kits.ONA return rods are suitable for a wide range of suit to Metso crusher parts and suit to jaw crusher parts, including suit to Nordberg C Series, suit to Metso, and other OEM and aftermarket equipment. Whether you need a standard replacement or a custom rod from your drawing, contact ONA with your model or part number for a quote. ONA Return Rod Part No. Model Part No. Model ONA-921064 C100 ONA-MM1034156 C150 ONA-949630797300 C100 ONA-921070 C160 ONA-941771 C105 ONA-917491 C200 ONA-941503 C110 ONA-919668 C3055 ONA-MM0209833 C116 ONA-951199 C80 ONA-MM0531457 C120 ONA-902742 C80 ONA-921067 C125 ONA-939984 C95 ONA-921069 C140 ONA-949638614500 C125 ONA-949640496100 C140 ONA-MM1520340 C120 ONA-921068 C140 ONA-MM1519871 C106 Keep your suit to jaw crusher toggle plate seated and your production moving. Choose ONA for return rods you can trust.All names, marks, models, symbols and descriptions are used for reference purposes only and it is not impied that any of the parts/brands listed are the product of any company other than ONA. We are not agents or distributors for any of the above mentioned brands nor do we have any commercial relationship or association with them.

  Hot Tags : C140 jaw crusher parts return rod Return rod for crusher Jaw Crusher Spare Parts Return Rod metso C80 return rod metso C140 Crusher Spare Parts nordberg c125 crusher parts return rod

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• What Does the Countershaft Assembly Do in Cone Crushers

  May 14, 2026

  What Is Countershaft AssemblyIn any cone crusher, whether single cylinder or multi-cylinder, the countershaft assembly is the power transmission component that connects the drive motor to the crushing mechanism. It receives rotational energy from a V-belt or direct drive system and converts it into the controlled, powerful motion needed to break rock. Without a well-engineered countershaft assembly, even the finest crushing chamber cannot reach its full potential. What are the Parts Included in the Countershaft Assembly?Eg: HP400 ONA-N90018011 Pos. Part No. Description Qty Net Wght 1 ONA-1068634887 COUNTERSHAFT 1 118 2 ONA-1036831195 PINION 1 54 3 ONA-1003396060 PIN, SPRING 4 0.20  4 ONA-1063192847 WEAR RING 1 0.454 5 ONA-1035715064 O-RING 1 1 6 ONA-N22102700 COUNTERSHAFT BOX GUARD 1 80 7 ONA-1022062210 COUNTERSHAFT BUSHING 2 14 8 ONA-7001530622 SCREW, HEXAGONAL 6 0.7 9 ONA-7001632030 WASHER, SPRING 6 0.04 10 ONA-1045376018 COUNTERSHAFT BOX 1 280 11 ONA-1027471712 COVER 1 14.5 12 ONA-7008010040 SILICONE SEAL 1 0.36 13 ONA-1063084500 PISTON SEAL 1 0.2 14 ONA-1062807443 OIL FLINGER 1 13.7 15 ONA-N01530194 SCREW, HEXAGONAL 6 0.037 16 ONA-7001630012 WASHER, LOCK, SERRATED 6 0.001   Design, Materials and Heat TreatmentThe countershaft assembly includes the countershaft, pinion, precision bronze countershaft bushings, pulley hub, sealing devices, and supporting housing. The motor drives the pulley, rotating the countershaft; the bevel pinion meshes with the large bevel gear on the eccentric assembly, which rotates the eccentric sleeve and forces the main shaft to perform gyratory crushing motion. To withstand high-speed operation and extreme shock loads, every component is made from high-grade materials. The countershaft body is forged from 42CrMo alloy steel, quenched and tempered to 28‑32 HRC for strength and toughness. The bevel pinion and gear use 20CrMnTi carburizing steel with surface hardness 58‑62 HRC and a tough core. Bearings and bushings are precision‑machined bronze for stable support and heat dissipation. One assembly per crusher, installed inside the main frame. ONA Supply and CustomizationONA offers complete countershaft assemblies suitable for both single-cylinder and multi-cylinder cone crushers. Whether you need a standard assembly or a custom order based on your own drawings, ONA manufactures with strict material certification and dimensional control. Each assembly delivers stable power transmission, low vibration, and long service life in the toughest mining and quarry conditions.The following is a list of countershaft assemblies and pinionshafts suitable for Metso, Sandvik, and Symons crushers： Brand Cone Crusher Models Part No. suit Metso GP100, GP11F, GP200, GP220, GP300S, GP330, GP550, HP200, HP300, HP400, HP500 ONA-1093050095, ONA-285340, ONA-N90018011, ONA-MM0221860, ONA-MM0224945, ONA-949617145100, ONA-945072, ONA-MM0315432, ONA-7090018004, ONA-7090018004_0, ONA-7090018006, ONA-MM0904990, ONA-MM1021748, ONA-MM1044180 Sandvik CH540, CH440, H8800 ONA-442.9815-901, ONA-442.9807-01, ONA-442.9259-01, ONA-852.0727-001 Symons 4.25FT, 7FT ONA-6875 0681, ONA-9450 3813 In addition to countershaft assemblies, ONA also supplies high-quality HP crusher wear parts, including concave mantle for cone crusher, bowl liner, and other key components for multi-cylinder cone crushers. For part number confirmation or custom inquiries, contact ONA directly.All names, marks, models, symbols and descriptions are used for reference purposes only and it is not impied that any of the parts/brands listed are the product of any company other than ONA. We are not agents or distributors for any of the above mentioned brands nor do we have any commercial relationship or association with them.  

  Hot Tags : Cone Crusher Machine Parts Countershaft assy Metso Crusher Spare Parts Countershaft Assembly Sandvik Crusher Spare Parts pinionshafts Assembly Symons cone crusher Countershaft Assembly Mining Machinery Parts Countershaft assy for H8800 Metso gp550 Countershaft Assembly

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• What Inspections Does ONA Carry Out on Its Crusher Parts?

  May 07, 2026

  At ONA, quality is never left to chance. Before any product, be it a mantle and bowl liner, jaw crusher jaw plate, cheek plate, bronze bushing, upper and lower frame, or blow bar suitable for Metso and Sandvik, leaves our factory, it undergoes a rigorous multi‑step inspection process. We believe that thorough testing is the only way to guarantee reliable performance in the field.Advanced Testing Equipment Our in‑house laboratory and workshop are equipped with a complete range of modern testing instruments: Composition Analyzers: We use advanced spectrometry to verify the exact chemical makeup of high manganese steel and bronze alloys, ensuring every batch meets the required material standards for wear resistance and impact strength. Ultrasonic Flaw Detectors: These instruments scan for internal cracks, voids, or inclusions deep inside castings, detecting hidden flaws that surface inspection cannot reveal.Colour Flaw Detectors (dye penetrant): A liquid dye is applied to the surface to expose microscopic cracks, porosity, or other defects invisible to the naked eye, guaranteeing defect‑free surfaces.   Three‑dimensional Coordinate Detectors To ensure every critical dimension matches the OEM drawing with high precision and traceability. Hardness Testers To confirm that the material meets the required specifications (e.g., work‑hardened surface after impact). Roughness Meters To check the smoothness of mating surfaces, which directly affects lubrication and wear life.   Inspection Reports & CertificatesEvery batch of castings is inspected at multiple stages: incoming raw material, during machining, and before final anti‑rust treatment and packing. Only when all tests are passed does the product receive the ONA approval stamp.Eg: Bowl Liner ONA-55208283 Certificate To Quality & Dimension Inspection ReportONA Quality CommitmentWith this complete testing system, ONA keeps the probability of product problems extremely low before shipping. Our goal is simple: deliver parts that fit perfectly, last longer, and give our customers confidence in every order. For custom orders made from customer drawings, we run the same full set of inspections to ensure exact compliance. Your peace of mind starts with our testing. Choose ONA for quality you can trust.All names, marks, models, symbols and descriptions are used for reference purposes only and it is not impied that any of the parts/brands listed are the product of any company other than ONA. We are not agents or distributors for any of the above mentioned brands nor do we have any commercial relationship or association with them.      

  Hot Tags : Crusher Parts Quality Control Crusher Parts Ultrasonic Flaw Detection CMM Dimensional Inspection Hardness Testing For Wear Parts Stone Crusher Spare Parts Roughness Meters Dye Penetrant Inspection For Crusher Parts

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• Why Care About Your Crusher's Feed Cone Assembly?

  Apr 16, 2026

  Ever wonder which component takes the first hit before your mantle even touches the rock? Most people point to the mantle and bowl liner—after all, those are the parts that actually do the crushing. But look up. Sitting quietly at the very top of the crusher is a small yet vital component: the feed cone assembly. Without it, even the best crusher would struggle to perform efficiently. What Is a Feed Cone Assembly?The feed cone assembly, also known as the feed plate or distribution cone, is installed on the locking bolt at the very top of a cone crusher’s crushing chamber. There is typically one feed cone per machine, and it sits directly above the mantle and bowl liner, making it the first component that incoming material touches. Its funnel‑like shape is designed to receive falling rock, ore, or aggregate and guide it smoothly toward the center of the crushing chamber, from where the material spreads out evenly before reaching the crushing surfaces. Key Components of a Feed Cone Assembly Lock nut: Secures the entire assembly to the top of the crusher, preventing loosening under vibration. Feed cone: Manufactured from MN13Cr2 high manganese steel, it distributes incoming material evenly across the crushing chamber, controls feed speed to match crusher load, and reduces direct impact on the mantle and bowl liner for balanced wear and efficient crushing. Hex bolt: Fastens the feed cone firmly to the mounting base for stable operation. Spring washer: Maintains bolt tension and absorbs shock to avoid loosening during crushing. Sealant: Seals the mating surfaces to prevent dust, fines, and moisture from entering the joint. What are the Parts Included in the Feed Cone Assembly?Eg: HP400 ONA-N90058315   Pos. Part No. Description Qty Net wght 1 N41060200 BOLT, LOCK 1 45 2 1055981158 FEED CONE 1 33.4 3 7001530880 BOLT, HEXAGONAL 1 2 4 7001632042 WASHER, SPRING 1 0.1 5 7008010040 SILICONE SEAL 1 0.36 Why Is It So Important? The feed cone assembly performs three critical functions that directly improve crusher performance and lower operating costs:  It spreads feed evenly across the crushing chamber, balancing forces, improving product consistency, and preventing uneven liner wear. It controls feed rate to match crusher load, avoiding clogging or starvation. It absorbs impact energy from falling rocks, protecting the mantle, head, and torch ring from direct strikes and extending their service life. The Feed Cone – The Heart of Your Feed Cone AssemblyWithout the feed cone, the entire feed cone assembly loses its purpose. It is the key component that evenly distributes incoming material into the crushing chamber, protecting the mantle and bowl liner from uneven wear and impact damage.The following is a list of feed cones suitable for Metso, Sandvik, Symons, Nordberg, and Barmac crushers:  What Models of Feed Cone Do You Offer? Suit Metso HPI00, HP200, HP300, HP400, HP500, HP700, HP800, HP3, HP4, HP5, HP6, GP11F, GP100, GP200S, GP300, MP800, GP100S, OMNI1560, GP550, MP1250, HP100, MP1000 Sandvik CH420, CH430, CH440, CH550, CH660, CH870, CH840, CH880, CH890, CH895, CS420, CS430, CS440, CS660, CV228, H2800, H3800, H4800, H6800, H7800, S2800 Barmac B9100SE, B9600, B6900, B7150 Symons 7FT Why You Should Pay Attention to Your Feed Cone Many operators inspect the mantle and bowl liner regularly, but ignore the feed cone until it is worn out. A damaged feed cone leads to uneven feed, accelerating liner wear, reducing product consistency, and risking damage to the head and top shell. Replacing a feed cone is quick, easy, and far cheaper than replacing liners prematurely or repairing the crusher frame. Regular inspection pays big dividends. For quality feed cones and other crusher parts, contact ONA.All names, marks, models, symbols and descriptions are used for reference purposes only and it is not impied that any of the parts/brands listed are the product of any company other than ONA. We are not agents or distributors for any of the above mentioned brands nor do we have any commercial relationship or association with them.  

  Hot Tags : Cone crusher feed plates for sale Metso hp crusher wear parts feed cone assy Metso cone crusher feed cone assembly Sandvik cone crusher feed plates Casting Crusher Spare Parts High Manganese Crusher Parts

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• What Is a Lower Frame Assembly and Why Can’t You Ignore It?

  Apr 09, 2026

  A cone crusher relies on several structural assemblies, and the lower frame assembly is the solid foundation that supports everything above it. Sitting at the very bottom of the crusher, it holds the eccentric bushing, the main shaft, and the hydraulic adjustment components. It also contains the main lubrication channels that keep internal parts running smoothly. Without a robust lower frame assembly, the entire crushing process would become unstable and unreliable. In simple terms, the lower frame assembly is the ankle and foot of the crusher. It takes all the load and keeps the machine standing tall. What is the Lower Frame Assembly?The lower frame assembly is the lowest major structural part of a cone crusher, typically cast from high-strength steel or ductile iron. It serves as the main base that connects the crusher to its supporting foundation, while also providing precise mounting surfaces for critical rotating components. Inside this assembly, you will find the eccentric drive mechanism, the main shaft socket, and the oil distribution system. Unlike the upper frame (which handles the feed and initial crushing), the lower frame assembly deals with transmitting crushing forces down to the foundation and housing the drive gear train. In many designs, the Lower Frame Assembly also incorporates hydraulic cylinder mounting points for adjusting the closed side setting (CSS).   Key Components of a Lower Frame AssemblySeveral key components work together inside the lower frame assembly. Here are four of the most important ones: Lower Frame: This is the main cast body that supports all other components, absorbs crushing forces, and mounts the crusher to its foundation. Countershaft Assembly: This unit transmits power from the drive motor to the eccentric bushing via the pinion and large gear, enabling the gyratory motion. Thrust Bearing: This component carries the entire axial load from the main shaft and eccentric, preventing metal-to-metal contact and ensuring smooth rotation. Eccentric Bushing: This rotating part fits within the lower frame bore and provides the main shaft with its gyratory motion. It is driven by the countershaft pinion and directly supports the main shaft socket.   What are the Parts Included in the Lower Frame Assembly?Eg: GP200 ONA-MM0309979   Pos. Part No. Description Qty Net wght 1 ONA-MM0309855 FRAME ASSEMBLY 1 3572.88 2 ONA-MM0309924 HUB ASSEMBLY 1 483.3 3 ONA-MM0315432 COUNTERSHAFT ASSEMBLY 1 166.05 4 ONA-MM0524454 BEARING 1 9.78 5 ONA-MM0531018 BEARING 1 1.6 6 ONA-941535 THRUST BEARING  1 47.5 7 ONA-932814 SLIP RING 1 160.61 8 ONA-MM0514397 COVER 1 59.65 9 ONA-923951 SHIM SHEET 3 0.07 10 ONA-949640547100 SHIM SHEET 12 0.0025 11 ONA-576159 SHIM PLATES 1 1.6 12 ONA-909657 ARROW 1 0.05 13 ONA-N02445063 PRESSURE RELIEF VALVE  1 1.48 14 ONA-951756 HOSE 1 0.25 15 ONA-706202487210 TERMINAL PLUG 1 0.01 16 ONA-706202406000 NIPPLE 1 0.2 17 ONA-932880 PIPE 2 0.08 18 ONA-909067 O-RING 1 0.09 19 ONA-909069 O-RING 1 0.03 20 ONA-N01530414 SCREW, HEXAGONAL 2 0.16 21 ONA-704103791000 SCREW, CAP, HEXAGON SOCKET HEAD 3 0.128 22 ONA-7001530420 SCREW, HEXAGONAL 4 0.2 23 ONA-MM0231168 SCREW, CAP, CYLINDER HEAD 6 0.019 24 ONA-704103720000 CAP SCREW, HXGNL SOCKET HEAD 10 0.1 25 ONA-704406010000 SCREW PLATE SCREW 2 0.01 26 ONA-7001633016 WASHER, LOCK 10 0.1 27 ONA-406300555090 WASHER, LOCK 6 0.01 28 ONA-406300555200 WASHER 4 0.01 29 ONA-N02101082 PLUG, PLASTIC 1 0.015 30 ONA-932975 SPLASH GUARD 1 1.0019 31 ONA-704404205100 CLAMP 2 0.02 32 ONA-704104480020 Set Bolt 3 0.045 Common Signs of Wear and FailureOver time, the lower frame assembly can suffer from wear and fatigue. The most common issues include cracks in the casting (often due to tramp iron or overloading), worn eccentric bushing (causing abnormal gyration and power spikes), and gear tooth pitting or breakage (leading to noisy operation and inaccurate CSS adjustment). Oil leaks around the lower frame assembly seals are another red flag, as they indicate seal degradation or a distorted mating surface. Regular visual and dimensional inspections are essential – especially after any tramp iron event.    Maintenance Tips for the Lower Frame AssemblyTo extend the life of your lower frame assembly, always follow the manufacturer’s lubrication schedule. Use the correct oil viscosity and keep the oil clean, because dirt is the number one killer of eccentric bushings and gears. During maintenance, check the mounting bolts between the lower frame assembly and the foundation – loose bolts can cause frame fatigue cracks. Also, inspect the sealing surfaces when replacing the lower frame assembly liner or dust seal. If you notice any cracks in the casting, do not weld it without professional advice; some cracks can be repaired, but many require full replacement for safety.   When Should You Replace the Lower Frame Assembly? Unlike wear parts (such as mantle and bowl liner or concave mantle for cone crusher), the lower frame assembly itself is not a consumable component. However, replacement becomes necessary when: The main bore for the eccentric is worn beyond spec. The casting has developed a critical crack that affects structural integrity. The mounting surfaces for hydraulic cylinders are damaged beyond repair. In many cases, a worn lower frame assembly can be rebuilt by line-boring and installing new bushings, but severe damage means replacement is more cost-effective and safer. The following is a list of the lower frame assemblies suitable for Metso and Sandvik cone crushers:   Brand Cone Crusher Models Part No. Suit Metso GP11F, GP300S, GP200, GP550 ONA-285374, ONA-MM0303333, ONA-MM0300550, ONA-MM0309855, ONA-MM0309979, ONA-MM0301555, ONA-586529 Sandvik H3800, CH430, S3800, H4800, CH440, H6800, CH660, H2800, CH420, S2800, S4800, H8800, NH200, NH300, NH400, NH400-9406, NH400-9642, NH400-9643, NH600, NH700, NH800, NS200, NS300, NS400-8067, NS600 ONA-442.7908-00, ONA-452.0231-01, ONA-442.7908-02, ONA-442.8735-00, ONA-452.3765-01, ONA-442.9871-00, ONA-452.9241-00, ONA-442.8735-01, ONA-442.9871-01, ONA-452.0231-02, ONA-452.0231-02M, ONA-452.0231-02C   Conclusion – Why It Matters The lower frame assembly might not be the most glamorous part of a cone crusher, but it is undeniably the most critical for stability and precision. Understanding its role, key components, and failure signs helps you plan proactive maintenance and avoid unexpected downtime. Whether you are an operator, a maintenance engineer, or a spare parts purchaser, treating the lower frame assembly with respect will pay off in longer crusher life and more consistent product quality.All names, marks, models, symbols and descriptions are used for reference purposes only and it is not impied that any of the parts/brands listed are the product of any company other than ONA. We are not agents or distributors for any of the above mentioned brands nor do we have any commercial relationship or association with them.  

  Hot Tags : metso gp series cone crusher wear parts sandvik ch660 cone crusher lower frame assembly ch430 cone crusher spare parts sandvik cone crusher ch440 lower frame assembly metso gp 220 lower frame assembly metso gp cone crusher

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• What is the counterweight assembly?

  Mar 31, 2026

  In the high-stakes world of aggregate and mining processing, the efficiency of your cone crusher relies on the seamless integration of its components. Among these, the counterweight assembly plays a critical role in ensuring smooth operation by balancing the dynamic forces generated during crushing. For operators using HP series equipment, sourcing high-quality hp crusher wear parts is essential, and the counterweight assembly is a key part of that system, directly impacting machine stability and longevity. What is the Counterweight Assembly? The counterweight assembly is a crucial mechanical component designed to offset the centrifugal force created by the eccentric bushing and the crushing head during rotation. By providing this dynamic balance, it significantly reduces harmful vibrations that would otherwise stress the main frame and other structural elements. For professionals seeking reliability, partnering with a trusted supplier of china metso crusher wear parts ensures that this assembly maintains the precise weight and dimensional tolerances required for optimal machine performance.   Key Components of a Counterweight Assembly A high-quality counterweight assembly is composed of several precisely engineered parts working in unison: Counterweight: This is the main cast iron or steel body, precision-machined to a specific weight that dynamically balances the crusher’s gyrations. Counterweight Liner: A sacrificial wear plate, often made of high-strength steel or rubber, that protects the main counterweight body from material buildup and abrasion. Hexagonal Screw: These high-strength fasteners are used to securely mount the counterweight liner to the main body, ensuring no loosening under extreme vibrational forces. Silicone Seal: A flexible sealing element that prevents fine dust, moisture, and debris from infiltrating the counterweight area, which could lead to premature wear or imbalance. Hard Thread Locker: A chemical adhesive applied to the threads of the screws to create a vibration-proof bond, preventing critical fasteners from backing out during operation.   What are the Parts Included in the Counterweight Assembly? Eg: HP400 ONA-7090228112 Pos. Part No. Description Qty Net wght 1 7016200114 COUNTERWEIGHT 1 739 2 1038018156 COUNTERWEIGHT LINER 1 143 3 7001530410 HEXAGONAL SCREW 8 0.13 4 MM0361376 THREAD LOCKER 1 0.2 5 7001530432 HEXAGONAL SCREW 6 0.4 6 7008010040 SILICONE SEAL 1 0.36   Why Precision in Balancing MattersThe primary function of the counterweight assembly is to manage the machine’s inertia. In a cone crusher, the rotating eccentric creates a powerful unbalanced force. Without a properly weighted and assembled counterweight, this force manifests as excessive radial runout and “hammering” on the main frame. A precision-engineered counterweight assembly ensures the crusher’s rotational forces are neutralized, allowing the machine to run smoothly at its rated speed. This directly translates to higher throughput and prevents premature fatigue failures in the main shaft and bushings.   Signs of Counterweight Assembly Failure Given that the counterweight operates in a high-stress, rotating environment, regular inspection is vital. Common indicators of a failing counterweight assembly include unusual vibrations that can be felt in the crusher’s base frame, excessive noise from the lower section of the crusher, and premature wear on the main shaft bushings. Additionally, if the silicone seal is compromised, operators may notice an accumulation of dust or “fines” packed tightly around the counterweight area, which can lead to an imbalance condition and catastrophic wear if left unaddressed.   Our Full Range of Counterweight Assemblies We offer a comprehensive range of aftermarket counterweight assemblies engineered to meet or exceed OEM specifications for durability and balance.  The following is a list of the main counterweight assemblies suitable for Metso cone crushers: Brand Cone Crusher Models Part No. Suit Metso HP4, HP6, HP200, HP300, HP400, HP500 N98000229, N98000228, N98000263, N98001181, MM1375731, N90228114, N90228115, 7090228201, N90228304, 7090228112, N90228127, 1093055003, N90228024   Ensure Your Crusher’s Balance and Longevity The counterweight assembly may not be the most visible part of your cone crusher, but its role in maintaining dynamic stability is non-negotiable. By investing in high-quality, precisely balanced assemblies and genuine components like silicone seals and hard thread locker, you protect your entire crushing circuit from destructive vibrations. Browse our gallery below to see our range of counterweight assemblies, and contact us today to find the perfect suit for your Metso or Sandvik crusher to ensure peak performance and uptime. All names, marks, models, symbols and descriptions are used for reference purposes only and itis not impied that any of the parts/brands istedare the product of any company other than ONA We are not agents or distributors for any of the above mentioned brands nor do we have anycommercial relationship or association with them.  

  Hot Tags : Quarrying Equipment Counterweight Assembly metso hp cone crusher hp300 metso hp200 cone crusher nordberg hp series Cone Crusher Spare Parts

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• What is the main shaft assy?

  Mar 24, 2026

  It is the single component that holds your cone crusher together—literally. The Main Shaft Assembly is the structural core of your crusher. It supports the mantle, drives the crushing motion, and absorbs the immense forces generated when breaking rock. Without it, your crusher is nothing more than a steel shell. While mantle and bowl liner handle the daily wear, the main shaft assembly determines whether your machine runs reliably for years or becomes a recurring source of unplanned downtime. It is the difference between a crusher that delivers consistent production and one that keeps your maintenance team busy. In this article, we’ll walk you through what the main shaft assembly is, its key components, and the manufacturing standards that ensure it performs as reliably as—or better than—any original equipment. What Is the Main Shaft Assy? The main shaft assembly is the central load-bearing and motion-transmitting component in a cone crusher. It serves two critical functions: Structural support: Carries the mantle and transmits crushing forces into the crusher frame Motion generation: Delivers the gyratory movement that creates the crushing action Designed for a service life measured in years—not hours—the main shaft operates under extreme conditions: high cyclic loads exceeding several hundred tons, shock loading from tramp material, and continuous exposure to dust, vibration, and temperature fluctuations.A main shaft assembly is not a single piece. It is a precision assembly of multiple components that must work together with exacting tolerances. Any deviation in geometry, material integrity, or assembly procedure directly affects crushing efficiency and operational uptime. Key Components of a Main Shaft Assembly HEAD: The main body that supports the mantle. Mounts to the main shaft via precision taper fit, providing the foundation for the crushing surface. MAIN SHAFT: The central structural member. Transmits eccentric motion to the head and supports all crushing loads. Forged from high-strength alloy steel with precision-ground bearing surfaces. PROTECTION BUSHING: Fits over the main shaft to provide the bearing interface between the shaft and eccentric bushing. Prevents direct metal-to-metal contact and maintains proper oil film clearance. SEAL: Prevents dust, water, and contaminants from entering the bearing surfaces and lubrication system. Essential for maintaining oil cleanliness and component life. LOCK WASHER: Prevents loosening of threaded connections under vibration. Provides a consistent clamping force and must be replaced after each disassembly. HEXAGON SOCKET HEAD CAP SCREW: Secures critical components such as the protection bushing and locking mechanisms. Requires precise torque application to withstand cyclic loading.   What are the parts included in the main shaft assy? Eg: GP200 ONA-MM0310111 Pos. Part No. Description Qty Net wght 1 932561 HEAD 1 781 2 932485 MAIN SHAFT 1 820.05 3 MM0539993 PROTECTION BUSHING 1 29.51 4 932953 SEAL 1 2.53 5 932952 SLIDE RING 1 25.2 6 704003080000 PIN, PARALLEL 1 0.02 7 N01530333 BOLT, HEXAGONAL 1 0.23 8 704103710000 SCREW, CAP, HEXAGON SOCKET HEAD 6 0.09 9 704005590000 WASHER, LOCK 1 0.01 10 7001633016 WASHER, LOCK 6   11 704602303400 PLUG, PLASTIC 4 0.01   Materials and Manufacturing Process We supply main shaft assemblies forged from high-strength alloy steel—the same material grade used in original equipment. Each unit is 100% dynamically balanced, ensuring smooth operation and minimizing vibration-related wear. Every assembly is shipped complete with main shaft, protection sleeve, key, seals, and mounting bolts, accompanied by full material and dimensional inspection reports. Backed by a 1-year warranty, our main shaft assemblies are built for reliable performance in the harshest operating conditions. Why Choose Our Main Shaft Assemblies? As a factory-based manufacturer, we deliver high-quality components at competitive prices by eliminating unnecessary markups. Our fast global delivery ensures you get the parts you need when you need them—minimizing costly downtime. With stocked inventory for popular models and custom orders available on short lead times, we offer flexibility that larger suppliers often cannot match. Every order is supported by direct communication with our engineering team, ensuring you get the right component for your specific application. Our Available Main Shaft Assemblies We manufacture main shaft assemblies to match original equipment specifications, ensuring seamless interchangeability with Metso and Sandvik cone crushers.  The following is a list of the main shaft assemblies suitable for Metso and Sandvik cone crushers: Brand Cone Crusher Models Part No. suit Metso GP200S, GP550, GP100S, GP11F, GP100, GP550, GP200, GP300 MM0310133, MM0301237, 936406,916187, 916231, 916186,MM0262456, 916173, MM0310111, MM0260020, MM0262457, 932956 Sandvik H8800, CH430 442.9732-AD, 442.9998-901, 442.8313-901, 452.6149-901 Symons 4.25FT, 4FT 9445-8317, 9005-0107 Trio TC66,TC36 TC6821100, TC6871001, 17000172   Reliability You Can Count On The main shaft assembly is the foundation of your cone crusher—a precision assembly that must withstand millions of load cycles over its service life. As a factory-based manufacturer, we combine traceable materials, rigorous quality control, and precision machining to deliver components that perform reliably in the harshest operating conditions. All names, marks, models, symbols and descriptions are used for reference purposes only and it is not impied that any of the parts/brands listed are the product of any company other than ONA. We are not agents or distributors for any of the above mentioned brands nor do we have any commercial relationship or association with them.  

  Hot Tags : gp200 crusher metso gp100 cone crusher metso gp11f cone crusher sandvik h8800 nordberg cone crusher Main Shaft Assembly metso gp cone crusher

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• What is the pitman assembly?

  Mar 19, 2026

  If you work with jaw crushers, you have likely heard the term Pitman Assembly (or moving jaw assembly). But what exactly is it, and why does it matter? In this short guide, we will break down the basics and show you the full range of pitman assemblies we offer. What is a Pitman Assembly? The pitman assembly is the moving part of a jaw crusher. It houses the pitman (the main body), the jaw dies, jaw crusher toggle plate, and bearings. As the eccentric shaft rotates, the pitman moves back and forth, crushing material against the fixed jaw. It is the heart of the crushing action – without a robust pitman, your crusher can not perform.   Key Components of a Pitman Assembly Pitman body : The main structure that transfers crushing force. Eccentric shaft: Drives the pitman’s reciprocating motion. Bearings: Ensure smooth rotation of the eccentric shaft. Bearing housings: Support and protect the bearings. Labyrinth seals: Prevent dust and dirt from entering the bearings. What are the parts included in the pitman assembly?Eg：C125 ONA-910869   Pos. Part No. Description Qty Net wght 1 118836 PITMAN 1 6300 2 949626150900 ECCENTRIC SHAFT 1 2150 3 118838 DISTANCE SLEEVE 1 52 4 949630786700 BEARING HOUSING 1 435 5 949630786800 BEARING HOUSING 1 435 6 949630786900 COVER 4 38.5 7 418621 LOCK PLATE 2 0.08 8 949647133900 LABYRINTH 2 16.5 9 949648703500 PLUG 2 0.6 10 949648703600 LABYRINTH 4 15 11 949648768300 TIGHTENING BUSHING 2 53 20 704102175500 EYE BOLT 2 8.8 21 705302735000 ROLLER BEARING 4 265 22 704104480000 RETAINING SCREW 6 0.01 23 7001530309 HEXAGONAL SCREW 20 0.1 24 7001530312 HEXAGONAL SCREW 40 0.1 25 704404215000 GREASE NIPPLE 4 0.04 30 704007370000 WASHER 60 0.42 31 706302339200 MEASURE ADAPTER 4 0.02 32 706303277000 PROTECTION CAP 4 0.001 33 70310025611 BAND 1 0.5 34 7002101030 PLASTIC PLUG 4   35 7008010002 HARD THREAD LOCKER 1   36 708801226500 UNIVERSAL GREASE 1 1 Why It is Critical ? The pitman assembly directly affects: Crushing efficiency: A worn pitman reduces output and increases energy consumption. Maintenance costs : Regular inspection and timely replacement prevent breakdowns. Product quality : Proper pitman movement ensures consistent particle size. How to Choose the Right Pitman Assembly Match the assembly to your crusher model. Consider: Material: High manganese steel for durability, or alloy steel for extra strength. Manufacturing process: Casting vs. forging. Precision: OEM spec dimensions guarantee perfect fit. Our Full Range of Pitman Assemblies We stock pitman assemblies for most popular jaw crusher models. All are manufactured to strict standards, ensuring long life and reliable performance.  The following is a list of the main pitman assemblies suitable for Metso and Sandvik jaw crushers: Brand Jaw Crusher Models Part No. Suit Metso C100, C106, C110, C120, C125,C140,C145, C150, C160, C200, C80, C96, C116 910557, MM0204726, MM1084690, 901599, MM0530850, 910869, 928380, MM0208687, MM0566817, MM0266492, 918577, 908619, 578138, MM1384088 Sandvik CJ612 400.3394-901 Why Choose Us? Quality assured: Each assembly is tested before shipping. Fast delivery: Large inventory means quick turnaround. Competitive pricing: Factory‑direct savings. Technical support: Our experts help you select the right part.   All names, marks, models, symbols and descriptions are used for reference purposes only and it is not impied that any of the parts/brands listed are the product of any company other than ONA. We are not agents or distributors for any of the above mentioned brands nor do we have any commercial relationship or association with them.  

  Hot Tags : jaw crusher spare parts jaw crusher wear plates sandvik jaw crusher metso c120 jaw crusher c120 jaw crusher metso c160 jaw crusher

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• What is the crusher hammer head?

  Mar 17, 2026

  When we talk about hammer crusher spare parts, the most critical component that comes to mind is the hammer head. It is the heart of any crushing operation—the part that actually does the breaking. Whether you are running a stone crusher in a quarry or recycling materials, understanding this simple yet vital piece can save you thousands in operating costs.   What Exactly Is a Crusher Hammer Head? A crusher hammer head is a wear-resistant component mounted on the rotor of a hammer crusher. As the rotor spins at high speed, the hammer head swings out and strikes the fed material—limestone, coal, gypsum, or demolition debris—breaking it into smaller pieces. Think of it as the “teeth” of the crusher; without it, no crushing happens.How Does It Work?The working principle is simple but powerful: Impact: The hammer head hits the incoming material with tremendous force. Crushing: The material is shattered against the breaker plates or other rocks inside the crushing chamber. Discharge: Once the pieces are small enough, they pass through the grate bars at the bottom. Because the hammer head takes the brunt of the impact, it is classified as a wear part—it will eventually wear out and need replacement. That’s why choosing the right crusher parts is essential for maintaining production efficiency. Common Materials for Hammer Heads Not all hammer heads are created equal. Depending on what you are crushing, the metallurgy should change. Here are the three most common types used in stone crusher applications: High Manganese Steel: Excellent toughness; work-hardens under impact. Common grades include Mn13Cr2, Mn18Cr2, and Mn22Cr2 – with higher manganese content providing greater work-hardening capacity for severe impact conditions. Ideal for large, hard rocks like granite. High Chrome Iron: Extremely hard and wear-resistant; lasts 3–4 times longer in abrasive conditions (e.g., silica-rich materials). However, it is more brittle. Bi-Metal Composite: Combines a tough steel shank with a wear-resistant alloy head—offering both safety for the rotor and long wear life. When Should You Replace Them? Even the best hammer heads wear down over time. Running a worn hammer too long leads to: Reduced crushing efficiency Higher energy consumption Risk of damaging the rotor (which is 10x more expensive to repair) This is where having a new vs. worn comparison becomes valuable. Look at the image below: the hammer on the left is new, with a full profile. The one on the right is heavily worn and must be replaced immediately.Simple Maintenance Tips to Extend Life Rotate Regularly: Wear is uneven. By flipping or swapping positions, you can use the full mass of the hammer and increase service life by up to 50%. Check for Cracks: A cracked hammer can break apart and damage the crusher. Inspect them weekly. Remove Tramp Metal: Install a magnetic separator. One stray piece of steel can destroy an entire set of hammers.   Why the Right Hammer Head Matters As a hammer crusher spare part, the hammer head directly affects your bottom line. The initial purchase price is only part of the equation—what really counts is cost per ton crushed. A hammer that lasts twice as long, even if it costs a bit more, almost always delivers better ROI.Whether you are a purchasing manager looking for the best value or a maintenance engineer trying to keep the plant running, understanding the basics of hammer heads helps you make smarter decisions.   Need Help Choosing? Every stone crusher and material is unique. If you’re unsure which hammer head suits your operation, send us your details (rock type, crusher model, current wear life). We’ll help you find the perfect match—and keep your crusher running at its best.All names, marks, models, symbols and descriptions are used for reference purposes only and it is not impied that any of the parts/brands listed are the product of any company other than ONA. We are not agents or distributors for any of the above mentioned brands nor do we have any commercial relationship or association with them.

  Hot Tags : hammer head crusher hammer head hammer crusher hammer crusher spare parts hammer crusher parts crusher spare parts

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