VSI crushers use a high-speed vertical rotor to accelerate material against fixed anvils or an autogenous rock bed. Impact, splitting, abrasion and particle collisions produce fine crushing and shaping. Wear life depends on more than part hardness: feed size, abrasiveness, moisture, rotor tip speed, cascade feed ratio, rock-bed shape and uncrushable material all affect performance.
Equipment Parts
Part Identification and Technical Details
Explore part names, images, material options and technical requirements. Select a card to open the corresponding replacement part page.
Major Components and Assemblies
Major Components and Assemblies
Individual and Maintenance Parts
Individual and Maintenance Parts
01
Rotor Tip Set
- Equipment Configuration
- Barmac / Enclosed Rotor
- Installation and Function
- Outermost edge of each rotor discharge port
- Material Options
- WC-Co Cemented Carbide with a High-Strength Steel / Wear-Resistant Cast Steel Support Body
02
Back-up Tip
- Equipment Configuration
- Barmac / Enclosed Rotor
- Installation and Function
- Behind the main rotor tip
- Material Options
- Wear-Resistant Cast Steel / High-Strength Steel with WC Inserts
03
Tip / Cavity Wear Plate
- Equipment Configuration
- Barmac / Enclosed Rotor
- Installation and Function
- Leading edge of the discharge port and the area next to the rotor tip
- Material Options
- High-Chromium White Cast Iron / Martensitic Wear-Resistant Steel / OEM Wear-Resistant Castings
04
Upper Internal Wear Plate
- Equipment Configuration
- Barmac / Enclosed Rotor
- Installation and Function
- Upper level inside the rotor
- Material Options
- High-Chromium White Cast Iron / Martensitic Wear-Resistant Cast Steel
05
Lower Internal Wear Plate
- Equipment Configuration
- Barmac / Enclosed Rotor
- Installation and Function
- Lower level inside the rotor
- Material Options
- High-Chromium White Cast Iron / Martensitic Wear-Resistant Cast Steel
06
Distributor Plate
- Equipment Configuration
- Enclosed Rotor Designs
- Installation and Function
- At the rotor center, above the main shaft
- Material Options
- High-Chromium White Cast Iron / Wear-Resistant Cast Steel / WC Cap / MMC
07
Trail Plate
- Equipment Configuration
- Barmac / Enclosed Rotor
- Installation and Function
- Inner trailing edge of each rotor port
- Material Options
- Wear-Resistant Steel / Martensitic Steel / Hardfaced or WC Edge
08
Feed Tube
- Equipment Configuration
- Common to Multiple Designs
- Installation and Function
- Below the hopper, above the rotor feed eye
- Material Options
- High-Chromium Castings / Wear-Resistant Cast Steel / Ceramic or MMC
09
Feed Eye Ring
- Equipment Configuration
- Barmac / Enclosed Rotor
- Installation and Function
- Central feed opening at the top of the rotor
- Material Options
- High-Chromium White Cast Iron / Wear-Resistant Alloy Cast Steel
10
Top External Wear Plate
- Equipment Configuration
- Barmac / Enclosed Rotor
- Installation and Function
- External top surface of the rotor body
- Material Options
- Wear-Resistant Steel at 400–500 HBW / Hardened Wear Lip
11
Bottom External Wear Plate
- Equipment Configuration
- Barmac / Enclosed Rotor
- Installation and Function
- External bottom surface of the rotor body
- Material Options
- Wear-Resistant Steel at 400–500 HBW / Hardened Wear Lip
12
T/CWP Bolt
- Equipment Configuration
- Conventional Barmac Rotor
- Installation and Function
- Fixing point for the port cavity wear plate
- Material Options
- Property class 10.9/12.9 alloy steel fasteners or OEM-specific fasteners
13
Retaining Bar
- Equipment Configuration
- Orange Series RC Rotor
- Installation and Function
- Vertical locking position at each rotor port
- Material Options
- 42CrMo/4140 Quenched and Tempered Steel or OEM High-Strength Wear-Resistant Steel
14
Taper Lock / Tapered Sleeve
- Equipment Configuration
- Taper-bush shaft arrangements, including MK/8000
- Installation and Function
- Between the tapered main shaft section and the rotor hub
- Material Options
- 42CrMo/4140 Quenched and Tempered Alloy Steel
15
Rotor Boss
- Equipment Configuration
- Enclosed Rotor
- Installation and Function
- At the rotor center, below the distributor plate
- Material Options
- High-Strength Cast Steel / Forged Alloy Steel / High-Strength Welded Structure
16
Open-table Shoe / Impeller
- Equipment Configuration
- Shoe-and-Anvil / Mag’Impact Chamber
- Installation and Function
- Outer edge of the open rotor table
- Material Options
- High-Chromium White Cast Iron / Martensitic Steel / WC or Ceramic MMC
17
Anvil
- Equipment Configuration
- Rock-on-Steel Chamber
- Installation and Function
- Stationary working surface around the rotor
- Material Options
- High-Chromium White Cast Iron / Martensitic Steel / MMC
18
Anvil Ring Assembly
- Equipment Configuration
- Rock-on-Steel Chamber
- Installation and Function
- Around the rotor, inside the housing
- Material Options
- High-Strength Steel Ring Frame with Replaceable Anvils and High-Strength Fasteners
19
Rock Box / Rock Shelf
- Equipment Configuration
- Rock-on-Rock Chamber
- Installation and Function
- Rock bed area around the rotor
- Material Options
- High-Strength Steel Frame with Localized Wear Parts and an Autogenous Rock Bed
20
Mainframe Liner
- Equipment Configuration
- Common to Multiple Designs
- Installation and Function
- Inner wall of the crushing chamber
- Material Options
- High-Chromium Castings / Martensitic Steel / Wear-Resistant Steel at 400–500 HBW
21
Lid Liner
- Equipment Configuration
- Models with an Opening Top Cover
- Installation and Function
- Inner surface of the top cover
- Material Options
- High-Chromium / Martensitic Castings / Wear-Resistant Steel at 400–500 HBW
22
Ramp Liner
- Equipment Configuration
- Common to Multiple Designs
- Installation and Function
- Slope below the rotor leading to the discharge opening
- Material Options
- High-Chromium Castings / Wear-Resistant Steel / Hardfaced or Ceramic Composite
23
Pedestal Protection Liner
- Equipment Configuration
- Designs with external protection, including Canica
- Installation and Function
- Around the main shaft, above the bearing housing
- Material Options
- Cast Chrome / High-Chromium Wear-Resistant Castings
24
Rotor Assembly / Rotor Body
- Equipment Configuration
- Common to Multiple Designs
- Installation and Function
- Center of the crushing chamber
- Material Options
- High-Strength Welded Structural Steel / Cast Steel with a Complete Set of Wear Parts
25
Main Shaft
- Equipment Configuration
- Common to Multiple Designs
- Installation and Function
- Passes vertically through the bearing housing
- Material Options
- Canica Astralloy / 42CrMo / 4140 / 34CrNiMo6 Forged Steel
26
Rotor Bearing
- Equipment Configuration
- Common to Multiple Designs
- Installation and Function
- Inside the vertical main shaft bearing housing
- Material Options
- 100Cr6/SAE 52100 Bearing Steel
27
Bearing Pedestal / Housing
- Equipment Configuration
- Common to Multiple Designs
- Installation and Function
- Central support position below the rotor
- Material Options
- Ductile Iron / Cast Steel / High-Strength Welded Structural Steel
28
Rotor Bearing Seal
- Equipment Configuration
- Common to Multiple Designs
- Installation and Function
- Contamination barrier where the main shaft exits the bearing housing
- Material Options
- Labyrinth/Taconite + NBR/HNBR/FKM/V-ring
29
Drive V-Belt
- Equipment Configuration
- Belt-Driven Models
- Installation and Function
- Between the motor and main shaft pulleys
- Material Options
- EPDM / Chloroprene Rubber with Polyester / Aramid Tensile Cords
30
Drive Sheave / Pulley
- Equipment Configuration
- Belt-Driven Models
- Installation and Function
- Lower end of the main shaft and the motor shaft end
- Material Options
- Gray Iron / Ductile Iron / Cast Steel or Fabricated Steel Pulley
Materials for similarly named parts may differ by OEM, machine model and operating conditions. Confirm the machine model, OEM drawing number and measured dimensions before ordering or manufacture.
7. Procurement and Acceptance Checks
1. Confirm the manufacturer, model, serial number, rotor diameter and depth, port count, and ROR, ROS, shoe-and-anvil or Mag’Impact chamber configuration. 2. Conventional Barmac and Orange Series RC rotors use different retainers, bolts, cavity plates and upper and lower plate fastenings; do not order simply by the label “Barmac parts.” 3. Assemble rotor tips, backup tips, cavity plates, internal upper and lower plates and distributor plates in OEM-specified mass-matched sets, distributed evenly across the ports. 4. Recheck runout and dynamic balance after rotor weld repairs, material changes, hub or taper-bush replacement, or complete wear-set replacement. 5. For WC-Co, high-chromium or MMC upgrades, check maximum feed size, speed, tramp material and impact loading to avoid chipping failures. 6. Inspect mainshafts, hubs and taper bushes for material, heat treatment, UT/MT, taper contact, circular runout and connection torque. 7. Record the complete bearing designation, clearance, fits, mounting temperature, lubricant, seals, baseline vibration and temperature rise. 8. Check liner material, segment profile, seating, hole positions, height alignment, fastening and safe rotor clearance.
Materials for similarly named parts may differ by OEM, machine model and operating conditions. Confirm the machine model, OEM drawing number and measured dimensions before ordering or manufacture.
