Center Sizer

A CenterSizer uses inward-rotating toothed rolls to crush material between the rolls. Identify RollSizer DRS units by their centre- or side-sizing configuration. Tooth geometry, roll gap and sidewall clearance affect product size. Use the FLS equipment links to identify legacy thyssenkrupp Mining installations.

Center Sizer

A CenterSizer uses inward-rotating toothed rolls to crush material between the rolls. Identify RollSizer DRS units by their centre- or side-sizing configuration. Tooth geometry, roll gap and sidewall clearance affect product size. Use the FLS equipment links to identify legacy thyssenkrupp Mining installations.

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

Tooth Segment / Tooth Cap

Tooth Segment / Tooth Cap

Material Options
ZGMn18Cr2 manganese steel / high-chromium cast iron / bimetal composites
Installation and Function
Toothed part that directly breaks the material
Maintenance Category
Very High
02

Tooth Segment Bolt

Tooth Segment Bolt

Material Options
42CrMo Alloy Steel
Installation and Function
Secures the tooth segments
Maintenance Category
ZH
03

Roll Bodies

Roll Shell / Drum

Material Options
Alloy Steel 42CrMo
Installation and Function
Roll body that supports the tooth segments
Maintenance Category
ZH
04

Toothed Roll Shaft

Roll Shaft

Material Options
42CrMo / 40CrNiMo
Installation and Function
Drives the toothed rolls
Maintenance Category
Low
05

Side Liner / End Plate

Side Liner / End Plate

Material Options
Hardox 500 / Manganese Steel
Installation and Function
Protects the side walls of the crushing chamber
Maintenance Category
ZH
06

Base Liners

Bottom Liner / Base Plate

Material Options
Hardox 500
Installation and Function
Protects the bottom of the crushing chamber
Maintenance Category
ZH
07

Scraper / Cleaner

Scraper / Cleaner

Material Options
Wear-Resistant Steel Plate
Installation and Function
Removes material adhering between the toothed rolls
Maintenance Category
ZH
08

Gearbox

Gearbox / Drive

Material Options
Case-carburized and hardened alloy steel
Installation and Function
Synchronizes the two toothed rolls
Maintenance Category
Low
09

Bearing / Bearing Housing

Bearing / Bearing Housing

Material Options
Bearing steel / cast steel
Installation and Function
Supports the toothed roll shaft
Maintenance Category
Low
10

Fluid Couplings

Hydraulic Coupling

Material Options
Aluminium alloy / steel
Installation and Function
Overload Protection
Maintenance Category
Low

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.

Material Information

  • ZGMn18Cr2 is a candidate manganese steel grade for sizing teeth. Confirm the actual material, heat treatment and in-service hardness against the drawing and impact/abrasion conditions.
  • Cr26 high-chromium cast iron: a candidate tooth material for low-impact, highly abrasive duties.
  • Bimetal composite: high-chromium cast iron tooth crown with a forged-steel backing.
  • Hardox 500: side and bottom liners.

Brand Applicability

FLS / legacy thyssenkrupp Mining CenterSizer / RollSizer DRS

Industry Applications

Crushing coal, limestone, clay and shale; aggregate production; primary and secondary ore crushing.

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.

Equipment Manufacturers and Series

Request centre sizer wear parts

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01

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02

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03

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04

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