Description
CAT 5P-3243 Thrust Needle Roller Bearing
| CAT 5P-3243 Thrust Needle Roller Bearing |
| CAT 5S-0994 RETAINER |
| CAT 327-4053 CENTERING BU |
| CAT 165-8318 RETAINER |
| CAT 270-6175 BEARING |
| CAT 574-1013 BEARING-NEED |
| CAT 496-2239 BUSHING |
| CAT 5V-5845 103.9mm Length Trunnion |
The CAT 5P-3243 is a Caterpillar genuine single-row tapered roller bearing, suitable for heavy-duty equipment gearboxes, drive axles, and other transmission components. It is used to withstand combined radial and unidirectional axial loads, suitable for medium-to-low speed, heavy-duty applications, ensuring rotational accuracy and transmission efficiency. The following are key information.
Core Technical Parameters
Item Details
Part Model: CAT 5P-3243 (Single Row Tapered Roller Bearing, Single Piece)
Material: GCr15 chromium bearing steel, hardened to HRC 60-64, raceway precision ground, surface roughness Ra≤0.4μm, wear-resistant and fatigue-resistant
Key Dimensions: Inner diameter approx. 45mm, outer diameter approx. 85mm, width approx. 20mm, cone angle approx. 12°, compatible with 45mm shaft diameter, paired installation
Single Weight: Approx. 0.42kg (0.93 lbs)
Compatible Models: CAT 950F/966F loaders, D6R bulldozers, 777D mining dump trucks, etc., gearbox axle 2, drive axle differential, wheel end support
Performance Characteristics: Suitable for -40℃ to + Operating at 120℃, rated dynamic load ≥48kN, rated static load ≥55kN, impact and vibration resistant, suitable for heavy-duty continuous operation.
Structure and Core Functions
Composite Load Bearing: Single-row tapered roller structure, capable of simultaneously bearing radial and unidirectional axial loads during equipment operation, suitable for complex stress conditions in transmission systems.
Positioning and Guiding: Tapered raceways guide the rollers to roll in an orderly manner, ensuring rotational accuracy, reducing friction loss, improving transmission efficiency, and preventing axial movement of components.
Wear-Resistant and Durable: Made of quenched chromium steel and precision-ground raceways, possessing high hardness and low roughness, extending bearing life, suitable for harsh operating conditions.
Assembly Adaptability: Standardized tapered design, adjustable bearing preload ensures operational stability, adapting to different load requirements.
Suitable Scenarios and Installation & Maintenance Points
Suitable Scenarios: Used in gear shafts, drive axle differentials, wheel end supports, etc., of heavy-duty equipment gearboxes, suitable for medium-to-low speed, heavy-load, and vibration/impact conditions, ensuring stable equipment movement and operation.
Installation Specifications:
Clean the shaft diameter and bearing mounting surfaces, ensuring they are free of burrs and rust. Use hot mounting (temperature ≤120℃) or cold pressing. For cold pressing, apply pressure to the inner ring end face using a special press tool; do not strike the raceway or tapered surface.
Match the bearing with the corresponding outer ring, adjust the preload to ensure smooth bearing operation, and control the axial clearance to 0.005-0.012mm. Fit tolerances should be designed according to H7/h6.
Maintenance Recommendations:
Check bearing operating temperature and noise every 1000 hours. If the temperature exceeds 80℃ or abnormal noise is detected, stop the machine and investigate, checking lubrication and preload.
During assembly overhaul, replace bearings and seals simultaneously, adding CAT-specific grease. Avoid mixing old and new parts, as this will affect accuracy and lifespan.
Avoid overloading, reduce impact loads, and prevent premature raceway wear.
