Description
CAT 6L-7752 15.9mm Inner Diameter Self Aligning Bearing
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The CAT 6L-7752 is a Caterpillar genuine single-row tapered roller bearing, suitable for transmission systems such as gearboxes and drive axles. It is used to withstand combined loads (radial + bidirectional axial), and is suitable for medium-to-high speed, heavy-duty conditions, ensuring stable operation of transmission components. The following are key information.
Core Technical Parameters
Item Details
Part Model: CAT 6L-7752 (includes inner ring/outer ring/roller/cage; some applications require matching bearing housing rings)
Material: High-carbon chromium bearing steel; inner and outer rings and rollers are quenched and tempered; surface is coated with an anti-rust coating; cage is made of stamped steel plate or engineering plastic.
Key Dimensions: Inner diameter 63.5mm (2.5in), outer diameter 120.65mm (4.75in), width 30.16mm (1.1875in); cone angle adapted for combined load transfer.
Compatible Models: Loaders 906, 908; Excavators 3024, 3034, 3044C; Engine 3054, used in gearbox output shaft, drive axle differential, etc.
Performance Characteristics Capable of simultaneously withstanding large radial loads and bidirectional axial loads; roller line contact design ensures uniform load distribution, suitable for medium- and high-speed operating conditions; high precision and smooth operation, suitable for power transmission scenarios in drive systems.
Structure and Core Functions
Combined Load Bearing: The tapered rollers and inner and outer raceways form a tapered contact, efficiently transmitting radial and bidirectional axial loads, suitable for gearboxes, drive axles, and other components that need to withstand multi-directional loads simultaneously, preventing axial movement of parts.
Stable Transmission and Precision: High-carbon chromium bearing steel material and precision machining ensure bearing rotational accuracy, reduce vibration and noise during transmission, improve power transmission efficiency, and are suitable for medium- and high-speed operating conditions.
Wear Resistance and Long Service Life: Quenching and tempering treatment increases surface hardness (HRC 60-64), enhancing wear resistance and fatigue resistance, suitable for frequent start-stop and heavy-load operation conditions in engineering machinery, extending service life.
Suitable Scenarios and Installation/Maintenance Points
Suitable Scenarios: Primarily used in the output shaft of the gearbox, drive axle differential, and engine accessory transmission of loaders and excavators. It bears combined loads and ensures smooth operation of transmission components, adapting to medium-to-high speed and heavy-load power transmission requirements.
Installation Specifications: Before installation, clean the journal and bearing housing bore to ensure no burrs or rust. The journal tolerance should be controlled within f6, and the housing bore tolerance within H7. The fit clearance should conform to the machine model specifications.
Use a dedicated press to smoothly press in the bearing. Do not strike the inner or outer rings to prevent damage to the rollers and raceways. During installation, pay attention to the bearing orientation, ensuring the large end of the tapered roller faces the load direction to guarantee load-bearing capacity.
Adjust the preload according to the machine model requirements. Avoid overtightening, which can cause overheating, or undertightening, which can cause vibration, affecting bearing life and transmission accuracy.
Maintenance Recommendations: Check the bearing’s operating condition every 1500-2000 working hours. Monitor temperature and noise to determine if there are any problems such as wear or poor lubrication. Replenish or replace grease/lubricating oil as needed.
Replace the parts immediately if you find that the rollers are peeling off, the raceways are pitted, or the clearance is too large, to prevent the failure of the parts from causing transmission failure; spare parts should be stored in a sealed container to avoid moisture or impurities.
