CAT 153-6850 COLLAR

CAT 153-6850 is a Caterpillar genuine Shaft Locating Collar, primarily used to fix the axial position of rotating components such as bearings and gears. It is compatible with the transmission and travel systems of heavy equipment such as excavators and loaders, featuring precise positioning, anti-loosening, and wear-resistant characteristics to ensure stable component operation. The following are key information.

Core Technical Parameters

Item Details
Part Model: CAT 153-6850 (Shaft Locating Cuff, Single Piece, Keyway Locating Type)

Material: 42CrMo alloy steel, tempered and oxidized, hardness HRC 32-38, tensile strength ≥1000MPa, wear-resistant and deformation-resistant

Key Dimensions: Inner diameter approx. 65mm, outer diameter approx. 85mm, width approx. 20mm, keyway width 8mm, depth 3mm, installation interference 0.01-0.02mm, compatible with 65mm diameter shafts

Single Weight: Approx. 0.38kg (0.84 lbs)

Core Compatibility: Compatible with drive shafts, gearbox input shafts, wheel end shafts, etc. of CAT 320D2, 336D2 excavators, 950M loaders, etc.

Performance Characteristics The keyway and shaft key precisely mesh to prevent circumferential rotation; axial positioning accuracy ≤0.02mm, suitable for heavy-load and vibration conditions, with excellent anti-loosening effect.

Structure and Core Functions

Dual Positioning Structure: The inner keyway meshes with the shaft key to achieve circumferential fixation, while the end face fits against the component to achieve axial positioning, preventing displacement of the component during rotation and vibration, ensuring transmission accuracy.

Heavy-Load Capacity: 42CrMo alloy steel, after quenching and tempering, can withstand the axial load and vibration impact of heavy equipment, preventing deformation or breakage of the collar, suitable for long-term heavy-load operation.

Anti-Loosening and Wear-Resistant Design: Surface oxidation treatment improves wear resistance and rust prevention. After installation, it has an interference fit with the shaft and is used with a lock nut, providing a significant anti-loosening effect, suitable for high-frequency start-stop conditions.

Assembly Compatibility: Standardized dimensions and keyway design allow for quick assembly to corresponding shaft diameters, compatible with original equipment manufacturer (OEM) parts replacement, ensuring maintenance efficiency and assembly accuracy.

Compatible Models and Application Scenarios

Compatible Equipment: CAT 320D2, 323D2, 336D2 excavators, 950M, 966K loaders, 140M graders, and other heavy equipment.

Installation Locations: Parts requiring axial fixation, such as drive shaft bearing positioning, gearbox gear positioning, wheel hub bearing positioning, and steering knuckle shaft component positioning.

Core Purpose: To fix the axial position of bearings, gears, wheel hubs, and other components, preventing component movement and ensuring stable operation of the transmission and travel systems. Suitable for heavy-duty, vibration, and high-frequency rotation conditions.