barmac b6150

• What's the Metso Barmac 840 STD/DTR Rotor?

  Oct 23, 2025

  Metso's Barmac 840 rotor is the most wear parts of the Barmac B7150se VSI crusher, commonly used in quarries and stone production plants. "840" refers to the rotor's outer diameter, or 840 mm.    Function The rotor's primary function is to accelerate the feed material and fling it against a fixed material bed ("rock-on-rock" anvils) or a surrounding feed bed. This high-speed impact crushes the rock along its natural fissures, producing high-quality cubic aggregate.   1. Material Acceleration: The raw material enters the crusher through the feed pipe and reaches the center of the rotating rotor.   2. Distribution and Ejection: The rotor's tip captures the material and ejects it outward at high speed through the rotor outlet.   3. Crushing Impact: The ejected material impacts the dense material layer accumulated on the surrounding feed ring and cascade rings, causing the material to break.   The "rotor" isn't a single component; it's a rotor assembly consisting of a rotor body and wear parts for Barmac B7150se vsi. Key components of the Barmac 840 rotor include:   Rotor body: The primary cast iron or steel structure that supports all other components. It serves as the backbone of the entire assembly.   Rotor tip (wear parts): These are replaceable tungsten carbide components bolted to the rotor body. They are the primary wear parts that directly contact and propel the feed material. They require periodic replacement.   Rotor outlet: The open passage between the rotor tips through which the accelerated material exits the rotor.   Shaft and bearings: The rotor assembly is mounted on a heavy shaft supported by large bearings for Metso Barmac B7150se vsi, enabling high-speed rotation (typically around 1,500-2,000 RPM).   When do wear parts need to be replaced?   Decreased output/capacity: The crusher is not processing as much material as before.   Poor product shape: An increase in flaky or elongated particles.   Excessive vibration: This may be due to uneven wear on the rotor tip tips, leading to imbalance.    Increased operating noise   The following is a list of the main components of the Barmac 840 DTR and STD:   840 DTR № Part Number  Description Qty Weight. KGUnit 1 B90334105N Bare Rotor 1 370 2 B96394049O Rotor Tip Set  3 5.2 3 B90394060A Short Backup Tip Set 1 1.6 4 B90394055B Trial Plate 1 1.5 5 B96394060B Long Backup Tip Set 1 3.2 6 B96334170C Top wear plate lipped  1 55 7 B96334180A Bottom wear plate lipped  1 58 8 B96394150O/B Bolt Set 3 0.15 9 B963940425A Bolt  1 0.2 10 B96394150N Cavity Wear Plate Outer 4 7.5 11 B96394150O  Cavity Wear Plate Middle 2 7.5 12 B96334030E  Feed Eye Ring 1 21 13 B96334135A Upper Wear Plate 1 19 14 B96334140A Lower Wear Plate 1 25.2 15 B962S7040B Feed Tube 1 14 16 B96394120E Distributor Plate 1 33 840 STD  № Part Number  Description Qty Weight. KGUnit 1 B96334105L Bare Rotor 1 253 2 B96394049O Rotor Tip Set  2 5.2 3 B96394055B Trial plate set  1 3.5 4 B96394060B Long Backup Tip Set 1 3.2 5 B96334170C Top wear plate lipped  1 55 6 B96334180A Bottom wear plate lipped  1 58 7 B96394150O/B Bolt Set 3 0.15 8 B963940425A Bolt  1 0.2 9 B96394150N Cavity Wear Plate Outer 4 2.5 10 B96334135A Upper Wear Plate 1 19 11 B96334140A Lower Wear Plate 1 25.2 12 B96334030E  Feed Eye Ring 1 21 13 B962S7040B Feed Tube 1 14 14 B96394120E Distributor Plate 1 33   If you have any needs, you can contact us at any time.   All names, marks, models, symbols and descriptions are used for reference purposes only and it is not implied 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.  

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