CAT 081-2743 BEARING

CAT 081-2743 is a Caterpillar genuine single-row deep groove ball bearing (with cage), suitable for hydraulic pumps, swing motors, or gearboxes of 306E2/307E2 excavators and 226B3/236B3 skid steer loaders. It is used for radial load support and low-speed precision positioning, and is suitable for outdoor dusty and vibrating conditions.

Core Parameters and Information

Item Details
Part Model: CAT 081-2743 (0812743) Deep Groove Ball Bearing

Type: Single-row deep groove ball bearing for engineering machinery, with stamped steel cage

Material: GCr15 bearing steel for inner and outer rings and balls, surface heat treatment + anti-rust coating

Key Dimensions: Inner diameter 25mm, outer diameter 52mm, width 15mm, chamfer r1.5mm

Performance Parameters: Dynamic load 14.0kN, static load 7.88kN, limiting speed 12000rpm (grease lubrication), operating temperature -40℃ to +120℃

Compatible Models: 306E2/307E2 excavators, 226B3/236B3 skid steer loaders

Matching Relationships: Used with matching bearing housings, seals, and snap rings

Applications and Compatibility

Compatible Equipment: 306E2/307E2 This product is used in mini excavators and 226B3/236B3 skid steer loaders. It is used in hydraulic pump spindles, swing motor end covers, gearbox input shafts, etc., to bear radial loads, limit radial runout of the shaft, and ensure transmission accuracy (Cat®…).

Application Scenarios: Suitable for low-speed, medium-radial load conditions, such as hydraulic pump gear shaft support, motor housing positioning, and gearbox shift mechanism guidance, preventing wear and leakage caused by shaft vibration. It is suitable for complex working conditions such as excavation and loading (Cat®…).

Compatible Equipment: It is compatible with bearing housings, seals, and snap rings. After installation, it ensures accurate bearing positioning, reliable sealing, and no interference (Cat®…).

Installation and Maintenance Points:

Installation: Clean the mounting surface and journal. Heat the bearing to 80-100℃ for hot installation or cold press installation using special tools. After installation, check the radial clearance (0.01-0.02mm) to ensure there is no jamming.

Maintenance: Check bearing temperature and for abnormal noise every 200 hours. Regularly replenish lubricating grease (lithium-based grease) and prevent dust and moisture from entering the bearing.

Replacement: Use a puller tool during disassembly to avoid striking the bearing; install the new part in its original position, ensuring the clearance meets requirements, and replace the seals simultaneously.