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1. Reliable Track Chain Support and Guidance
The track roller supports the track chain weight along the undercarriage frame, reducing friction between chain links and frame surfaces. Ensures smooth machine travel and prevents premature chain wear. Essential for highway milling, pavement recycling, and large-scale excavation projects requiring stable machine mobility.
2. Compatible with CAT Milling Machine Models
Direct bolt-on replacement for OEM track roller on CAT PM620, PM622, PM625, PM630, PM820, PM822, PM825, PM200, and PM201 series cold milling machines. Often replaced alongside track chain, drive sprocket, idler wheel, side guide roller (386-4195) , track tension cylinder, and track pads during complete undercarriage service.
3. Heavy-Duty Sealed Construction
Manufactured from forged alloy steel with induction-hardened wear surface. Features double-sealed bearings pre-greased for long service life, resisting dust, debris, and moisture ingress. For maximum undercarriage reliability, replace track rollers in sets and inspect track chain and sprockets for wear.
Item | Details |
|---|---|
Part Number | 497-8871 |
Product Name | Track Roller / Track Carrier Roller / Track Support Roller |
Brand Compatibility | CAT |
Fit Models | PM620 / PM622 / PM625 / PM630 / PM820 / PM822 / PM825 / PM200 / PM201 |
Weight | 9.2 kg |
Dimensions | 230 × 115 × 115 mm |
Roller Diameter | 115 mm |
Material | Forged alloy steel, induction-hardened surface |
Bearing Type | Double-sealed, pre-greased |
Function | Track chain support and guidance |
Related Parts | Track Chain, Drive Sprocket, Idler Wheel, Side Guide Roller (386-4195), Track Tension Cylinder, Track Pads |
Warranty | 1 year |
Installation | Bolt-on replacement |
