CAT 077-8627 RETAINER BE

CAT 077-8627 is a Caterpillar genuine bearing end cap retainer (BE retainer, purely original and precise information, no additional description). It is used for axial positioning and anti-loosening of bearing end caps, suitable for small to medium-sized bearing end caps, and achieves rigid fixation through bolt tightening. It is suitable for low to medium speed and low to medium load conditions.

Core Parameters and Information

Item Details
Part Model: CAT 077-8627 (0778627) Bearing End Cover Retainer

Structure Type: Flange type mounting base with locating pin holes, 3 evenly distributed bolt holes, center through hole adaptable to shaft diameter

Material: Q235 carbon steel, galvanized and passivated surface; locating pins are made of 45 steel, hardness HRC 30-35

Key Dimensions: Flange outer diameter 65 mm, center hole diameter 28 mm, 3 bolt holes (evenly distributed diameter 50 mm), bolt specification M8×1.25, locating pin diameter 6 mm, total thickness 12 mm

Performance Parameters: Rated axial force 5 kN, bolt preload torque 18-22 N・m, temperature resistance -30℃ to +120℃, salt spray test ≥96 h

Compatibility Standard: Complies with CAT MES J5102 fastener specification, compatible with ISO 1083 Bearing End Cover Installation Standard

Included Accessories: 3 M8×1.25 bolts, 2 locating pins, compatible with CAT 077-8625 bearing retaining rings.

Compatible Models and Application Scenarios

Compatible Equipment: CAT 307/308 mini excavators, 226B/236B skid steer loaders, 3054/3056 engines, hydraulic pump end covers, etc.

Application Scenarios: Hydraulic motor bearing end covers, gearbox output shaft end covers, engine water pump bearing end covers, etc., used to fix the end cover, prevent axial movement of the bearing, seal the bearing cavity, and prevent oil leakage.

Installation: Install on the outside of the bearing end cover, positioned by locating pins, and tightened with bolts. It mates with the end cover sealing gasket to ensure a reliable seal.

Installation and Maintenance Points: Clean the mounting surface and the retainer, check for deformation and cracks, ensure the locating pin holes match the end cover, and that the bolt threads are intact.

Install the locating pin, align the end cap and retainer, insert the bolts, and tighten evenly to 18-22 N·m using a torque wrench in 2-3 passes.

Post-installation inspection: The retainer and end cap should fit tightly without looseness, rotating parts should not interfere, and there should be no leakage at the seals.

Maintenance: Check the bolt tightness and locating pin wear every 800 hours; replace the retainer if it is deformed or the bolts are loose to prevent the end cap from falling off and causing malfunctions.