Description
CAT 453-6508 BEARING-SLV-GD
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CAT 453-6508 YM is a Caterpillar genuine steel-backed aluminum-based sleeve bearing, suitable for shaft support in engineering machinery transmission and hydraulic systems. The following is purely accurate information (without additional description):
Core Parameters and Information
Item Details
Part Model: CAT 453-6508 YM (4536508) Straight-tube sleeve bearing, without flange
Part Type: Steel-backed aluminum-based bimetallic sleeve bearing, bearing radial loads, suitable for low-speed, heavy-load conditions
Material: Steel back: low carbon steel, inner liner: aluminum-tin alloy (AlSn20Cu), uncoated
Key Dimensions: Inner diameter 65.00mm (H7 tolerance), outer diameter 75.00mm (r6 tolerance), length 50.00mm, chamfered ends 1×45°
Structural Features: Inner bore with uniaxial lubrication groove + 3 radial oil holes (hole diameter φ3mm), end without oil groove 5mm from end face, working surface roughness… Ra≤0.4μm
Matching: Clearance fit with shaft (0.040-0.055mm), interference fit with bearing housing (0.012-0.020mm), Operating temperature -20℃ to +130℃
Lubrication requirements: Grease lubrication (CAT Moly Grease), replenish lubrication every 500 working hours, grease injection pressure ≤3.5MPa
Rated load: Allowable radial load 25.0kN, maximum sliding speed 2.5m/s, PV value ≤2.0MPa・m/s
Compatible models and assemblies:
Loaders: CAT 938M, 950M (transmission intermediate shaft)
Excavators: CAT 320GC, 323GC (slewing gearbox input shaft)
Bulldozers: CAT D6N, D7E (final drive support shaft)
Matching parts: 453-6508 Sleeve bearing, bearing housing (536-7894), locating ring (8T-4126), sealing ring (123-4568)
Installation and Fitting Points:
Clean the journal and bearing housing bore, ensuring no burrs or rust. Journal roughness Ra≤0.8μm, bearing housing bore roughness Ra≤1.6μm.
Cold press fitting, pressure ≤20kN. Apply force to the steel backing end face using specialized tooling. Do not directly strike the inner liner.
After installation, check the inner diameter: 65.040-65.055mm, radial runout ≤0.03mm, no deformation or jamming.
Align the lubrication hole with the bearing housing oil passage to ensure unobstructed lubrication. Install the locating ring to fix the bearing’s axial position.
