Hello customer

Welcome to Rock Machinery

Products

High manganese steel bowl liner mantle concave factory

Factory Capability

Bowl liner & mantle production

Fully CNC machined · Full material analysis

Large cone crusher bushing factory

Manufacturing Plant

Cone crusher bushing plant

China's largest production volume

Ultra high quality metso cone crusher bushing

Metso Series

Metso cone crusher bushings

Centrifugally cast · Mirror-finish CNC

Ultra high quality sandvik CH880 cone crusher bushing

Sandvik Series

Sandvik CH880 bushings

Centrifugally cast · Extended working life

CNC vertical lathe machine MP1250 main frame

Machining

MP1250 main frame on lathe

Cast steel · Full inspection

Ultra high quality sandvik cone crusher mainshaft

Sandvik Series

Cone crusher main shaft

Alloy steel forging · CNC lathe

High quality metso C200 jaw crusher pitman on machining

Metso Series

C200 pitman on the machine

Cast steel · Weight 19 tons

Product applications

crusher jaw plate

Jaw crusher fixed jaw, movable jaw

Mn18Cr2/Mn21Cr2Mo work-hardening manganese steel — surface hardness increases to 500+ HB in service.

Material: Mn13Cr2, Mn18Cr2, Mn21Cr2, Mn21Cr2Mo, XT510, XT520, XT610, XT710, XT720.

All compatible models (4)

Main products

Cone crushers

Our cone crushers use a conical crushing chamber: the mantle spins and crushes rock against the fixed bowl liner. The output is cubical aggregate with a tight size distribution. We build standard and short-head models for secondary, tertiary and quaternary stages, depending on your feed size and what you need to produce.

Cone crusher parts →

Jaw crushers

Jaw crushers crush with two opposing jaws: one fixed, one moving. They handle primary crushing of hard, abrasive rock and give you coarse, angular aggregate. Our single-toggle design includes hydraulic CSS adjustment on the larger models, so you can change the gap setting quickly when the feed changes.

Jaw crusher parts →

Crusher wear and spare parts

We supply wear and spare parts across the full range: manganese liners and jaw plates in Mn18Cr2 and Mn21Cr2, bronze bushings in C93800 and C93700, gears and pinions in 20CrMnTi and 18CrNiMo7, forged 42CrMo shafts, and 20Mn5 cast frames and shells. Bushings are centrifugal cast, manganese parts sand cast, shafts and gears forged.

View parts database →

Frequently asked questions

? What materials are your crusher parts made from?
Wear parts are manganese steel, usually Mn18Cr2 or Mn21Cr2. In service the surface work-hardens from about 200 HB up past 500 HB, which is what gives the wear life. Bushings are C93800 and C93700 bronze, centrifugal cast. Gears are 20CrMnTi or 18CrNiMo7, and shafts are forged 42CrMo.
? Are your parts compatible with OEM crushers?
Yes, they are built to the original specifications. We are a manufacturer, not a reseller, so the parts are cast, forged and machined in our own facilities using our own patterns.
? How long does delivery take?
Stock items leave in 3 to 7 days. Standard production runs take 14 to 21 days. Large castings or custom orders need 30 to 45 days. If you have an emergency breakdown we can arrange express shipping.
? Do you ship worldwide?
Yes. We export to mines and quarries all over the world. Regular orders go by sea freight, urgent ones by air. Full customs documentation is included.
? I don't have a part number. Can you still help?
Usually yes. Send us the crusher make and model plus a photo or a dimensioned sketch of the part. We can identify it from our pattern library, or reverse-engineer it from a sample if needed.
ROCK MACHINERY
Registered in China

Registration number: 91330782MACQ9CX477

Focus on ore processing machines

Leader of aftermarket mining parts

Over 20 years of specialized experience

Full parts support

Fast delivery and quick response

Address: Room 440, Area 2, Kuajie Park, No.106 Chunhan Road, Beiyuan Street, Yiwu, Zhejiang, China

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Complaints:admin@rock-machinery.com

©2026 ZHEJIANG ROCK MACHINERY CO., LTD

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