CAT 183-5863 RETAINER

CAT 183-5863 is a Caterpillar genuine shaft end retainer (cotter pin type positioning fastener), suitable for shaft end positioning in engines and transmission systems. The following is purely precise information (no additional description):

Core Parameters and Information

Item Details
Part Model: CAT 183-5863 (1835863) Shaft End Retainer

Part Type: Cotter pin type shaft end positioning fastener, used for axial positioning and anti-loosening, suitable for low-to-medium speed and light-load conditions

Material: Body: 40Cr alloy steel (quenched and tempered HRC28-32), Cotter pin: 304 stainless steel, Anti-loosening washer: 65Mn spring steel

Key Dimensions: Inner diameter of retainer: 35.00mm (H7 tolerance), Outer diameter: 58.00mm, Thickness: 12.00mm, Opening groove width: 4.00mm, Positioning hole: Φ8.00mm (m6 tolerance)

Structural Features Annular open structure with locating pin hole; pre-tightened after cotter pin insertion to prevent loosening; adaptable to shaft end step positioning; axial clearance ≤0.02mm after installation.
Matching: Clearance fit with shaft (0.015-0.025mm), interference fit with locating pin (0.008-0.012mm); Operating temperature: -30℃ to +110℃
Rated load: Axial positioning load 18.0kN, radial limiting load 8.0kN, cotter pin shear strength ≥8.0kN
Weight: 0.28kg
Compatible models and assemblies:
Excavators: CAT 320D, 323D (swing motor shaft end)
Loaders: CAT 938K, 950H (gearbox output shaft end)
Engines: CAT C7.1, C9.3 (crankshaft front end fixation)
Matching parts: 183-5863 Fixture, cotter pin (12-3456), anti-loosening washer (9X-3456), locating pin (8T-4123)
Installation and Fitting Points:
Clean the shaft end and mounting surface, ensuring no burrs or oil stains. The flatness of the shaft end step surface should be ≤0.03mm.

Place the fixation pin onto the shaft end. Press the locating pin into the cold state with a pressure ≤5kN. After pressing, the perpendicularity should be ≤0.02mm.

Place the cotter pin into the locating hole, bending the tail open ≥90°. Ensure the anti-loosening washer is tightly fitted against the end face of the fixation pin, without any looseness.

After installation, check that the axial movement is ≤0.03mm, rotation is smooth, and the coaxiality between the fixation pin and the shaft is ≤0.04mm.