CAT 077-6361 RETAINER BEA

CAT 077-6361 is a Caterpillar genuine axial positioning bearing retainer ring (pure original factory information, no additional description), used to fix the outer ring of drivetrain bearings, suitable for heavy-duty impact conditions, and used in conjunction with 077-6194 bearings and 077-6071 bushings (Cat®…).

Core Parameters and Information

Item Details
Part Model: CAT 077-6361 (0776361) Bearing Retaining Ring

Structure Type: Integral axial retaining ring with locating flange and 3 evenly distributed bolt holes, outer ring without opening, inner ring stepped locating, surface galvanized and passivated for corrosion protection (Cat®)…

Material: 65Mn spring steel, quenching hardness HRC 42-48, surface galvanized and passivated, salt spray test ≥96 h, thickness tolerance ±0.02 mm (Cat®)…

Key Dimensions: Inner diameter 180 mm, outer diameter 200 mm, thickness 8 mm, locating flange height 5 mm, bolt hole diameter 10 mm, hole spacing 190 mm (circumferentially distributed), step height 2 mm

Performance Parameters: Axial load ≥50 kN, radial runout ≤0.05 mm, flatness ≤0.03 mm, axial movement after assembly ≤0.05 mm

Compatibility Standard: Complies with CAT The retaining ring conforms to GB/T 894.1-7 dimensional tolerances, with a surface roughness Ra≤1.6 μm and hardness conforming to SAE J403.

Matching Relationship: It fits snugly against the end face of the outer ring of the 077-6194 bearing. The retaining ring is fixed to the housing by bolts, positioning the outer ring of the bearing and preventing axial movement. Bolt preload is 80-100 N・m.

Compatible Models and Applications:

Compatible Parts: Matches with 077-6194 tapered roller bearings, 077-6071 bushings, and 077-5974 drive plates. Used in gearbox output shaft bearing housings, drive axle differential housings, hydraulic pump housings, etc., to position the outer ring of the bearing and limit axial displacement (Cat®…).

Compatible Equipment: CAT 349D2/352 excavators, 988K loaders, D8T bulldozers, 777 mining trucks, etc., for axial positioning of bearings under heavy-load conditions in the transmission system. Matching Installation: One retaining ring is provided with each bearing. During installation, the retaining ring should fit against the outer ring end face of the bearing. Tighten the bolts evenly to ensure the axial positioning accuracy of the bearing and reduce vibration wear.

Installation and Maintenance Points: Clean the retaining ring and mounting surface. Check the retaining ring for deformation, cracks, and corrosion. Measure the inner diameter and thickness to match the housing mounting dimensions, ensuring tolerance matching.

Embed the retaining ring positioning flange into the housing groove, fitting it against the outer ring end face of the bearing. Insert the bolts and pre-tighten them evenly and crosswise to 80-100 N·m. Check that there is no gap between the retaining ring and the bearing outer ring.

After installation, rotate the bearing. It should rotate freely without jamming. Axial runout ≤ 0.05 mm, radial runout ≤ 0.08 mm, and no abnormal noise.

Maintenance: Check the retaining ring bolt torque every 1000 hours. If loose, retighten. Replace the retaining ring if it is deformed, corroded, or worn > 0.1 mm. Do not strike during disassembly to avoid deforming the retaining ring.