High Pressure Grinding Rolls

High-pressure particle-bed comminution. Roll surface studs and tyres carry extreme compressive loads; cemented carbide studs are a key wear-life consideration.

Equipment Section View

High Pressure Grinding Rolls cutaway part location diagram

High-pressure grinding rolls comprise a fixed roll, floating roll, main bearings, hydraulic loading system, supporting frame and feed and discharge arrangements. Material is compressed in a particle bed between counter-rotating rolls. Confirm roll diameter, width, capacity and operating pressure for the model, ore properties and feed conditions.

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.

Individual parts

Individual and Maintenance Parts

Roll Surface / Tyre

Roll Surface / Roller Tyre

Material Options: Alloy steel roll body with tungsten carbide studs, or a wear-resistant hardfacing layer
Technical Requirements: Retain material family and verification items; Confirm hardness, tensile strength and other numerical properties against a material specification, manufacturer data or approved project record before publishing.

Studs / Roll Studs

Stud / Roller Stud

Material Options: WC-Co Cemented Carbide
Technical Requirements: Consider transverse rupture strength. Confirm hardness, tensile strength and other numerical properties against a material specification, manufacturer data or approved project record before publishing.

Edge Guard

Edge Protection / Edge Liner

Material Options: High-chromium white iron, cemented carbide composites or hardfaced steel
Technical Requirements: High-chromium cast iron: commonly app; Control edge chipping and wear from material bypass. Confirm hardness, tensile strength and other numerical properties against a material specification, manufacturer data or approved project record before publishing.

Side Guard

Cheek Plate / Side Liner

Material Options: High-chromium white iron, bimetallic composite plate or NM450/NM500
Technical Requirements: Wear-resistant steel; Consider impact resistance and ease of replacement. Confirm hardness, tensile strength and other numerical properties against a material specification, manufacturer data or approved project record before publishing.

Feed Chute Liner

Material Options: NM450/NM500, bimetallic composite liners or high-chromium cast iron
Technical Requirements: Consider tough wear-resistant steel for heavy feed impact and high-chromium composite liners where erosion predominates.

Discharge Chute Liners

Discharge Chute Liner

Material Options: NM400—NM500, ceramic-rubber composite panels or bimetallic liners
Technical Requirements: Address erosion by compacted material and buildup, and provide for sectional replacement.

Bearing / Bearing Seal

Material Options: GCr15/100Cr6 bearing steel; NBR, HNBR or FKM seals
Technical Requirements: Retain material family and verification items; Confirm hardness, tensile strength and other numerical properties against a material specification, manufacturer data or approved project record before publishing.

Hydraulic Cylinder Seal

Material Options: Polyurethane primary seals with NBR/FKM secondary seals
Technical Requirements: Retain material family and verification items; Confirm hardness, tensile strength and other numerical properties against a material specification, manufacturer data or approved project record before publishing.

Scraper / Cleaner

Material Options: Wear-resistant polyurethane, wear-resistant rubber or hardfaced steel scrapers
Technical Requirements: Retain material family and verification items; Confirm hardness, tensile strength and other numerical properties against a material specification, manufacturer data or approved project record before publishing.

Frame Liners

Press Frame Liner

Material Options: NM400/NM450/NM500 or bimetallic wear plate
Technical Requirements: Use removable sections to protect the underlying frame. Confirm hardness, tensile strength and other numerical properties against a material specification, manufacturer data or approved project record before publishing.

Materials for similarly named parts may differ by OEM, machine model and operating conditions. Confirm the machine model, drawing and measured dimensions before ordering or manufacture.