CAT 382-8630 Stainless steel U groove roller

CAT 382-8630 is a Caterpillar genuine 304 stainless steel U-groove roller, compatible with scraper lift guides and linkage guide mechanisms of Cat 120M/140M/160M graders, 950GC/966GC loaders, etc., used for reciprocating motion guidance and load bearing. It weighs approximately 0.35 kg. The following is professional structured information:

Core Technical Parameters (Professional Version)

Item Details
Basic Attributes
Model: 304 stainless steel U-groove roller, integral solid wheel body, outer diameter φ60 mm, groove width 12 mm, groove depth 8 mm, shaft hole φ16 mm, wheel body thickness 20 mm, single weight 0.35 kg, material: 304 stainless steel (Cr≥18%, Ni≥8%), built-in 6203-ZZ deep groove ball bearing (sealed and dustproof), rated static load 8 kN, dynamic load 4 kN. kN, coefficient of friction ≤0.05, operating temperature -30℃ to +150℃, corrosion resistance IP66

Key Dimensions: Shaft hole and shaft clearance fit (0.01-0.02 mm), groove surface roughness Ra≤1.6 μm, wheel rim chamfer 1×45°, wheel radial runout ≤0.03 mm, end face runout ≤0.02 mm, bearing clearance C3 grade (0.012-0.025 mm)

Material and Process: 304 stainless steel forging, wheel groove quenching (HRC 45-50, hardened layer 0.8-1.2 mm), bearing pre-lubrication (lithium-based grease NLGI 2), sealing structure is double-sided metal dust cover, waterproof, dustproof and mudproof, suitable for outdoor humid conditions

Compatible Models: Cat 120M/140M/160M grader scraper lifting guide rail, 950GC/966GC This product is compatible with the loader bucket linkage guide wheel, the AP655F asphalt paver screed guide mechanism, and also some Shantui SEM 921 graders.

Assembly Fit: The clearance between the shaft hole and the φ16 mm pin should be 0.01-0.02 mm. The installation torque is 18-22 N·m. A φ16 mm flat key is required for positioning to prevent circumferential rotation. The contact pressure between the roller and the guide rail should be ≤2 MPa to avoid overload deformation.

Installation and Maintenance Points: Before installation, check that the wheel body is free of cracks and the groove surface is free of wear. Clean the shaft and mounting seat. The bearings do not require additional grease (pre-lubricated at the factory). During installation, tighten the nut with a torque wrench to ensure that the roller rotates freely without jamming.

After installation, check that the radial runout of the wheel body is ≤0.03 mm and the parallelism between the end face and the guide rail is ≤0.05 mm to avoid uneven wear that leads to premature wear of the groove surface.

Maintenance cycle: Check roller wear every 1000 hours (replace if groove depth < 5 mm or radial runout > 0.1 mm), clean the wheel body and guide rail every 2000 hours to avoid mud and sand accumulation, and check bearing seals every 3000 hours under humid conditions to prevent water ingress and corrosion.