Mineral sizers use low-speed toothed rolls to shear, split and size material, with the breaking action depending on tooth and machine design. Related MMD series include 500/625/750/1000/1300/1500. Applications include coal, limestone, gypsum, phosphate, bauxite and oil sands; confirm capacity and product size for the material and installed configuration.
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
Crusher Tooth / Segment
- Material Options
- ZGMn18Cr2 manganese steel / high-chromium cast iron / bimetal composites
- Installation and Function
- Removable, replaceable toothed part that directly breaks the mineral feed
- Maintenance Category
- Very High
02
Tooth Segment Bolt
- Material Options
- 42CrMo Alloy Steel
- Installation and Function
- Secures the tooth segments to the toothed roll
- Maintenance Category
- ZH
03
Roll Shell / Drum
- Material Options
- 42CrMo alloy steel / hardfaced carbon steel
- Installation and Function
- Cylindrical body that supports the tooth segments
- Maintenance Category
- ZH
04
Roll Shaft
- Material Options
- 42CrMo / 40CrNiMo
- Installation and Function
- Drives the toothed rolls
- Maintenance Category
- Low
05
Side Liner / End Plate
- Material Options
- High-Manganese Steel / Hardox 500
- Installation and Function
- Protects the side walls of the crushing chamber
- Maintenance Category
- ZH
06
Bottom Liner / Base Plate
- Material Options
- Hardox 500 / Manganese Steel
- Installation and Function
- Protects the bottom of the crushing chamber
- Maintenance Category
- ZH

07
Gear / Drive Gearbox
- Material Options
- Case-carburized and hardened alloy steel
- Installation and Function
- Synchronizes the rotation of the two toothed rolls
- Maintenance Category
- Low
08
Bearing / Bearing Housing
- Material Options
- Bearing steel / cast steel
- Installation and Function
- Supports the toothed roll shaft
- Maintenance Category
- Low
09
Scraper / Cleaner
- Material Options
- Wear-Resistant Steel Plate
- Installation and Function
- Removes material adhering between the toothed rolls
- Maintenance Category
- ZH
10
Hydraulic Coupling
- Material Options
- Aluminium alloy / steel
- Installation and Function
- Overload protection and power transmission
- Maintenance Category
- Low
11
Adjustment Shim
- Material Options
- Stainless Steel
- Installation and Function
- Adjusts the gap between the toothed rolls
- 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 manganese steel: a work-hardening candidate for sizer teeth. Suitability depends on impact energy, abrasiveness and tooth construction.
- Cr26 high-chromium cast iron: a tooth material candidate for low-impact, highly abrasive service, with a candidate hardness of HRC 60-65 subject to the part specification.
- Bimetallic construction: a high-chromium cast iron tooth crown on a forged steel base, combining abrasion resistance with base toughness.
- Hardox 500/600: candidate wear-resistant plate grades for side and bottom liners. Confirm the hardness range for the specific product, thickness and material certificate.
Brand Applicability
Related equipment brands include MMD Group, FLS ABON, TAKRAF, McLanahan, Gundlach, CITIC and EXCT. Check parts separately for the actual toothed-roll, sizer or multi-roll configuration.
Industry Applications
Run-of-mine coal, limestone and gypsum crushing, bauxite and phosphate crushing, oil sands sizing, railway ballast processing and coke 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.