CAT 085-6723 BEARING

CAT 085-6723 (0856723) is a Caterpillar genuine double-row angular contact ball bearing for construction machinery. It is compatible with 259D3/279D3 skid steer loaders and 906H/907H mini excavators, used in the boom joint and connecting rod hinge points of the working device. It withstands radial and bidirectional axial loads, is suitable for medium-speed, medium-load conditions, and ensures precise positioning and smooth operation.

Core Parameters and Information

Item Details
Part Model: CAT 085-6723 (0856723) Double Row Angular Contact Ball Bearing

Type: Double Row Angular Contact Ball Bearing (Engineering Machinery Dedicated, with Seal)

Material: Chrome bearing steel, surface rust-proof treatment, seal is nitrile rubber (NBR)

Key Dimensions: Inner diameter 45mm, Outer diameter 85mm, Width 20mm, Axial clearance 0.02-0.05mm

Performance Parameters: Basic rated dynamic load 42.3kN, static load 28.5kN, grease-lubricated limiting speed 4800rpm, applicable temperature -40℃ to +120℃

Compatible Models: CAT 259D3/279D3 skid steer loaders, 906H/907H mini excavators

Accessories: 085-3552 bushing, 085-4792 retainer, 083-5020 Adjusting Ring

Suitable Parts: Boom joints and connecting rod hinges of the working device in 259D3/279D3 skid steer loaders and 906H/907H mini excavators. Bears radial and bidirectional axial loads, suitable for medium-speed, medium-load conditions, ensuring precise positioning and smooth operation, preventing vibration wear, and improving operational reliability.

Application Scenarios: Suitable for frequent load-changing operations such as excavation and loading, ensuring smooth operation of the boom joints and connecting rod hinges of the working device, preventing component loosening and wear, reducing the risk of failure, and improving operational safety and reliability.

Compatibility: Commonly used with 085-3552 bushings, 085-4792 retainers, and 083-5020 adjusting rings. The bushings reduce friction and wear, the retainers provide axial positioning, and the adjusting rings control bearing clearance, suitable for long-term high-frequency vibration operations, preventing component fatigue damage.

Installation and Maintenance Points

Installation: Clean the journal, bearing housing bore, and components; check dimensional tolerances; use a special tool for press-fitting, avoid hammering; after installation, ensure a good fit, no jamming or looseness, smooth rotation without abnormal noise, and axial clearance of 0.02-0.05mm.

Maintenance: Check lubrication status and for abnormal noise/vibration every 200 hours; regularly replenish lithium-based grease (NLGI 2 grade); prevent water and dust intrusion to prevent rust and wear.

Replacement: Use a special puller for disassembly to avoid damaging the journal/bearing housing bore; before installing a new bearing, verify its dimensions and accuracy; after installation, test for smooth operation without abnormal noise.