Precision Roller Bearings-144-916-7950

Core Features

Load Bearing: Withstands radial loads from heavy machine loads and axial loads from operational impacts, preventing shaft deformation or jamming.

Drag Reduction and Energy Consumption Reduction: Rolling friction replaces sliding friction, reducing transmission energy consumption, minimizing component wear, and improving transmission efficiency.

Positioning and Guiding: Precisely positions the radial and axial positions of the shaft system, ensuring gear meshing accuracy and preventing transmission component misalignment, abnormal noise, or meshing failure.

Impact Buffering: Roller and cage structure buffers operational impacts, protecting shafts, housings, and other related components, extending transmission system life.

Sealing and Protection: Models with sealing structures prevent dust, mud, and oil intrusion, prevent grease leakage, and are suitable for harsh working conditions.

Product Superiority

Original Factory Precision Fit: Manufactured according to Komatsu original drawings, the inner diameter, outer diameter, width, clearance, and mounting hole are perfectly matched, requiring no repairs. After installation, it is seamlessly compatible with the shaft system and housing, ensuring transmission accuracy.

High Load Capacity and Fatigue Resistance: Utilizing SCM420 chromium-molybdenum alloy steel inner and outer rings + high-carbon chromium bearing steel rollers, quenched and tempered, with a rated dynamic load ≥85kN and a rated static load ≥120kN. It is impact-resistant, fatigue-resistant, and has a service life exceeding 3000 hours.

Low Friction and High Temperature Resistance: Employing a low-friction cage and high-temperature grease, the operating temperature is ≤120℃, and the coefficient of friction at high-speed rotation is ≤0.002, with no significant temperature rise or thermal decay, suitable for continuous heavy-duty operation.

Sealed, Dustproof, and Durable: Double-sided contact seals with an IP54 protection rating effectively prevent dust and mud intrusion, ensuring long-term grease retention and reducing maintenance frequency and downtime.

High adaptability to working conditions: It is suitable for heavy-duty, dusty, and humid working environments such as mines, infrastructure, and water conservancy. It is resistant to vibration and temperature differences, and its performance is stable over long-term use. It is not prone to increased gaps or jamming.

Applicable Scene

This component is designed for Komatsu D65/D85 bulldozers in heavy-duty continuous operations such as mine stripping, large-scale infrastructure projects, and land leveling. It is particularly suitable for critical transmission parts like the final drive and steering mechanism, serving as the core component that ensures stable movement and steering. For enhanced transmission system reliability, it is recommended to inspect and replace it simultaneously with the bushing and sealing ring.