CAT 081-5135 BEARING

CAT 081-5135 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 dusty, high-vibration environments, ensuring stable transmission.

Core Parameters and Information

Item Details
Part Model: CAT 081-5135 (0815135) 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 35mm, outer diameter 72mm, width 17mm, chamfer r1.5mm

Performance Parameters: Dynamic load 27.5kN, static load 15.2kN, limiting speed 9000rpm (grease lubrication), operating temperature -40℃ to +120℃

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

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

Applications and Compatibility

Compatible Equipment: 306E2/307E2 mini excavators, 226B3/236B3 Skid steer loaders use components such as hydraulic pump spindles, rotary motor end covers, and gearbox input shafts to bear radial loads, limit radial runout, and ensure transmission accuracy.

Application Scenarios: Suitable for low to medium speed, medium radial load conditions, such as hydraulic pump gear shaft support, motor housing positioning, and gearbox shifting mechanism guidance, preventing wear and leakage caused by shaft vibration. Adaptable to complex working conditions such as excavation and loading.

Compatible Equipment: Uses 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 (0.015-0.025mm) to ensure 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.