Vertical Mill

Core grinding equipment. Roller tyres and table liners face particle-bed compression and abrasion. High-chromium cast iron and hardfaced composites are common material options.

Equipment Section View

Vertical Mill cutaway part location diagram

Vertical roller mills use several rollers to compress and shear a material bed on a horizontally rotating grinding table. Hot gas enters through the nozzle ring around the table and carries fine particles to the dynamic classifier. Coarse particles return to the table, while tramp material and difficult-to-grind coarse particles leave through the reject system. Principal wear parts are located in the rollers, table, nozzle ring, classifier and dust-laden gas passages.

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

Grinding Roller / Roller Tyre Assembly

Grinding Roller / Roller Tyre

Material Options: High-chromium white iron, Ni-Hard 4 or a steel-backed multilayer hardfacing composite
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.

Grinding Table / Table Liner Assembly

Grinding Table / Table Liner

Material Options: High-chromium white iron, Ni-Hard 4 or a steel-backed hardfacing composite
Technical Requirements: Control radial wear uniformity and joints between segments. Confirm hardness, tensile strength and other numerical properties against a material specification, manufacturer data or approved project record before publishing.

Grinding Roller Sleeve

Roller Liner / Roller Sleeve

Material Options: Replaceable high-chromium cast iron roller tyres or hardfaced composite tyres
Technical Requirements: Balance abrasion resistance, spalling resistance and secure fit on the roller core.

Segmented Grinding Table Liner

Table Segments / Grinding Plates

Material Options: High-chromium white iron, Ni-Hard 4 or steel-backed hardfaced composite plate
Technical Requirements: Control segment hardness, thickness and weight variation to prevent table vibration and local high spots.

Nozzle Ring / Louver Ring

Material Options: Heat- and wear-resistant alloy steel, wear-resistant steel or hardfaced composites
Technical Requirements: Requires erosion and thermal cycling resistance. Confirm hardness, tensile strength and other numerical properties against a material specification, manufacturer data or approved project record before publishing.

Air Classifier Blade

Classifier Blade / Vane

Material Options: NM400/NM450, hardfaced wear plate or ceramic composites
Technical Requirements: Wear-resistant steel; Control blade weight balance. Confirm hardness, tensile strength and other numerical properties against a material specification, manufacturer data or approved project record before publishing.

Dam Ring

Dam Ring / Retention Ring

Material Options: Wear-resistant steel, low-alloy cast steel or hardfaced composites
Technical Requirements: Requires erosion and deformation resistance. Height and clearance directly affect material bed thickness.

Mill Shell Liner

Mill Body Liner / Housing Liner

Material Options: NM400—NM500, bimetallic composite plate or wear-resistant ceramics
Technical Requirements: Steel plate. 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 or ceramic-rubber composites
Technical Requirements: Account for falling-material impact, erosion and buildup, using replaceable sections.

Reject Chute Liner

Material Options: NM400—NM500 or bimetallic composite plate
Technical Requirements: Resists impacts from tramp iron, coarse particles and hot material, with additional protection at changes in flow direction.

Grinding Roller Bearing / Seal

Roller 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: PU primary seals with NBR/FKM secondary seals and backup rings
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.

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.

Equipment Manufacturers and Series

LOESCHEClaudius Peters