CAT 081-3476 BEARING

CAT 081-3476 is a Caterpillar genuine single-row deep groove ball bearing (with stamped steel cage), suitable for 306E2/307E2 excavators and 226B3/236B3 skid steer loaders. It is used in hydraulic pumps, swing motors, gearboxes, etc., supporting radial loads and suitable for outdoor dusty, high-vibration conditions, ensuring stable transmission. Cat®…

Core Parameters and Information

Item Details
Part Model: CAT 081-3476 (0813476) Deep Groove Ball Bearing

Type: Engineering Machinery Single Row Deep Groove Ball Bearing 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 30mm, outer diameter 62mm, width 16mm, chamfer r1.5mm

Performance Parameters: Dynamic load 20.1kN, static load 10.8kN, limiting speed 10000rpm (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 to support radial loads, limit radial runout, and ensure transmission accuracy in components such as the hydraulic pump spindle, swing motor end cover, and gearbox input shaft.

Application Scenarios: Suitable for low to medium speed and 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.

Compatible Equipment: It is compatible with bearing housings, seals, and snap rings. After installation, ensure accurate bearing positioning, reliable sealing, and no interference.

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 (0.012-0.022mm) to ensure there is no jamming.

Maintenance: Check bearing temperature and for abnormal noise every 200 hours. Regularly replenish 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 the original position, ensuring that the clearance meets the requirements, and replace the seals at the same time.