Product Description
| Material | ZG40Mn,40mn2 |
| Part No. | 21N-27-31191,21N-27-31120,21N-27-31210,21N-27-31221,21N-27-31231,21N-27-31130,21N-27-31161|KM2420,CR4820,A9520000M00,VKM2420V |
| Finish | Smooth |
| Colors | Black, yellow, or customized |
| Technology | Forging/Casting |
| Surface Hardness | HRC55-60,depth: 8mm-12mm |
| Warranty time | 12 Months |
| Delivery Time | 25-30 days |
PC1250 SPROCKET PART NO.:21N-27-31191
Product Overview
Part Number: 21N-27-31191
Fit Machine: Komatsu PC1250 Heavy Mining Excavator
This drive sprocket is a heavy-duty aftermarket replacement undercarriage wear part exclusively designed for Komatsu PC1250 large open-pit mining excavators. It is manufactured from high-strength alloy steel with full-tooth carburizing deep quenching heat treatment, meshing seamlessly with matched track chains to output stable driving power under severe full-load working environments of stone quarries and large-scale mines.
Core Advantages
Precision Machined Replacement Installation Dimensions
The tooth profile, inner bore and mounting hole dimensions are precisely machined to fit Komatsu PC1250 excavators perfectly. Direct bolt-on installation is available without cutting or secondary modification.
Ultra Deep Hardened Gear Teeth
High-hardness tooth surface delivers superior wear resistance, significantly prolonging service life on rocky mining operation sites.
High Toughness Thick Steel Body
Resists cracking and permanent deformation under continuous heavy-load mining excavation cycles.
Precision CNC Machining Teeth
Enables smooth meshing with track links to lower track abrasion and effectively avoid track jumping and derailment.
Strict Pre-Shipment Full Inspection
Each sprocket undergoes hardness testing and dimensional calibration before packaging to ensure consistent uniform quality.
Compatible Machine
This aftermarket replacement sprocket fits Komatsu PC1250 crawler mining excavator perfectly.
If you cannot confirm compatibility, send your machine model and photos of your old sprocket to our sales team for quick professional verification.
Application
Replacement drive sprocket for Komatsu PC1250 heavy mining excavators, widely applied to open-pit mining, stone quarries and large earthmoving heavy machinery chassis drive systems.
Packing & Delivery
Adopt shockproof export wooden cases and fumigated wooden pallets for outer packaging.
We support bulk wholesale orders, mixed full-set undercarriage spare parts orders, fast mass production lead time and global door-to-door logistics delivery service.
Why Choose MUYE Aftermarket Undercarriage Parts
MUYE Machinery has specialized in aftermarket heavy mining & mini excavator chassis spare parts for over 10 years:
- Complete product lineup covering sprockets, track rollers, top rollers, idlers and track shoes compatible with Komatsu, Hitachi, Kobelco, CAT, Sumitomo and other mainstream construction machinery brands
- Direct factory supply with competitive wholesale prices, no extra markup from middle distributors
- All aftermarket undercarriage wear parts are covered by a 12-month quality warranty
- Professional technical team provides accurate model matching and installation guidance
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