Description
CAT 077-3553 BEARING RETA
| CAT 077-3553 BEARING RETA |
| CAT 077-3600 BEARING |
| CAT 077-3655 RING-RTNG |
| CAT 077-3738 SEAT |
| CAT 077-3765 RETAINER BAR |
| CAT 077-3814 RING LOCK |
| CAT 077-3986 RETAINER |
| CAT 077-4090 RETAINER |
CAT 077-3553 is a Caterpillar genuine bearing retainer ring (pure original factory information, no additional description), compatible with the high-pressure fuel pump bearings of C13/C15/C18 engines. It is used for axial positioning and anti-loosening, preventing bearing displacement and ensuring stable fuel pump operation (Cat®…).
Core Parameters and Information
Item Details
Part Model: CAT 077-3553 (0773553) Bearing Retaining Ring
Structure Type: External snap-fit elastic retaining ring, annular with opening, used for axial positioning and anti-loosening of bearings
Material: 65Mn spring steel, blackened surface oxidation, hardness HRC45-50, tensile strength ≥1200 MPa
Key Dimensions: Outer diameter 62 mm, inner diameter 55 mm, thickness 2 mm, opening width 8 mm, radial wall thickness 3.5 mm
Performance Parameters: Operating temperature -40℃ to 180℃, elastic recovery rate ≥95%, shear strength ≥800 MPa, anti-loosening torque ≥50 N・m
Compatibility Standard: Complies with CAT retaining ring technical specifications, dimensional accuracy IT8 grade, surface roughness Ra≤1.6 μm
Compatible Models and Assemblies
Compatible Parts: 077-3080 bearing, 077-3545 Fixture, High-Pressure Fuel Pump Rotor Assembly
Compatible Equipment: CAT 336D2L/349D2L excavators, 980M/982M loaders, D8T/D9R bulldozers (C13/C15/C18 engines), used for axial positioning and anti-loosening of high-pressure fuel pump bearings.
Installation: One piece per fuel pump, installed in the outer groove of the bearing to prevent axial movement of the bearing. Works with the fixation to ensure stable axial clearance of the rotor.
Installation and Maintenance Points:
Clean the mounting groove and check that the retaining ring is free from deformation and cracks, has normal opening elasticity, and that the mounting groove size matches.
Use retaining ring pliers to pry open the retaining ring and insert it into the outer mounting groove of the bearing, ensuring it is fully engaged without looseness or misalignment.
After installation, check that the bearing rotates freely without jamming or abnormal noise, and that axial movement is ≤0.03 mm.
Maintenance: Check the elasticity and installation condition of the retaining ring every 2000 hours. Replace it promptly if deformation or weakened elasticity is found to prevent bearing displacement.
