CAT 298-5169 BEARING BALL

CAT 298-5169 is a Caterpillar genuine single-row deep groove ball bearing, suitable for light-to-medium load, high-speed rotating parts in small to medium-sized machinery. It is primarily used to bear radial loads, but can also withstand small amounts of bidirectional axial loads. It is suitable for hydraulic pumps, gearboxes, and other applications in excavators, loaders, and other equipment, ensuring smooth operation of components. The following are key information.

Core Technical Parameters

Item Details
Part Model CAT 298-5169 (Including inner ring/outer ring/balls/cage/seal, some specifications include dust cover)

Material High carbon chromium bearing steel (GCr15), inner and outer rings and balls are quenched and tempered, with a rust-proof coating; cage is engineering plastic (PA66) or stamped steel plate, seal is nitrile rubber (NBR)

Key Dimensions Inner diameter 60mm (2.362in), outer diameter 110mm (4.331in), width 22mm (0.866in), compatible with standard journal and seat hole tolerances

Compatible Models Excavators 305.5E2, 306E2; Loaders 906H, 907H; Mini road rollers CB24B, used for hydraulic pump spindles, gearbox countershafts, fan pulleys, etc.

Performance Characteristics Primarily designed to withstand radial loads, with the ability to withstand small amounts of bidirectional axial loads; low coefficient of friction and high limiting speed; sealed design prevents leakage of impurities and grease, suitable for medium-to-high speed and light-to-medium load conditions.

Structure and Core Functions

Radial Load Bearing: The deep groove balls and inner and outer raceways form an arc contact, efficiently transmitting radial loads, suitable for components such as hydraulic pumps and gearboxes where radial forces are predominant, while also withstanding small amounts of bidirectional axial loads, preventing slight axial movement of components.

Low Friction and High-Speed ​​Adaptability: High-carbon chromium bearing steel material and precision machining, combined with an engineering plastic cage, reduce operating friction, suitable for medium-to-high speed rotation conditions, improving component operating efficiency and reducing energy consumption.

Sealing Protection: Nitrile rubber seals effectively prevent the intrusion of dust, moisture, and other impurities, preventing grease leakage, extending bearing life, and suitable for the dusty and humid operating environments of construction machinery.

Suitable Scenarios and Installation/Maintenance Points

Suitable Scenarios: Primarily used in small and medium-sized excavators and loaders for hydraulic pump spindles, gearbox countershafts, fan drive shafts, steering system gearboxes, etc., suitable for light to medium loads and medium to high-speed rotation, ensuring smooth component operation.

Installation Specifications: Before installation, clean the journal and bearing housing bore to ensure no burrs or rust. Journal tolerance should be controlled within f6, and housing bore tolerance within H7. The fit clearance should conform to the machine model specifications.

Use a dedicated press to smoothly press in (prioritize the inner ring). Do not strike the inner or outer rings to prevent damage to the balls and raceways. Pay attention to the orientation of the seal ring to ensure protective effectiveness.

No additional preload adjustment is required. Fill with the corresponding type of grease according to the machine model requirements, avoiding excessive or insufficient grease to prevent overheating and wear.

Maintenance Recommendations: Check the bearing’s operating condition every 2000-2500 working hours. Monitor temperature and noise to determine if there is wear, seal failure, or other problems. Replace the seal ring or replenish grease promptly.

Replace the ball bearings immediately if pitting, raceway wear, or excessive clearance is found to prevent equipment failure due to component failure; spare parts should be stored in a sealed container to prevent moisture or impurities from entering.