CAT 617-1385 BEARING

CAT 617-1385 is a Caterpillar genuine single-row deep groove ball bearing, suitable for hydraulic pumps, gearboxes, or travel mechanisms in equipment such as mini excavators and loaders. It is used to withstand radial loads and slight bidirectional axial loads, ensuring smooth operation of rotating parts. The following is precise original part information:

Core Technical Parameters Cat® …

Item Details
Part Model: CAT 617-1385 (6171385) Single-row deep groove ball bearing, weight approximately 0.12 kg (0.26 lb), open structure, with stamped steel cage, suitable for oil or grease lubrication

Core Material: High carbon chromium bearing steel (52100/SUJ2), rings and balls integrally hardened, hardness HRC 60-64, ball surface ultra-precision ground, raceway roughness Ra≤0.2 μm, excellent fatigue resistance and wear resistance

Key Dimensions: Inner diameter 25 mm (0.984 in), outer diameter… 52 mm (2.047 in), width 15 mm (0.591 in), steel ball diameter 7 mm, quantity 10, inner ring to shaft fit tolerance k6, outer ring to mounting hole fit tolerance J7

Structural Features: Single-row deep groove ball design, capable of withstanding radial loads and slight bidirectional axial loads, suitable for medium and low speed rotation (maximum speed 8000 rpm), stamped steel cage ensures uniform distribution of steel balls, reducing operating noise

Compatible Models: CAT 305.5E2/306E2 mini excavators (hydraulic pump drive shaft), 906H/907H loaders (gearbox input shaft), 249D compact tracked loaders (travel motor reduction gearbox), and other small construction machinery

Accessories: Compatible seals 436-7781, spacers 8T-4127, lock nuts 6V-7853, grease fittings 1U-8878 Core Functions and Structural Features

Universal Load Compatibility: The deep groove ball bearing structure can simultaneously withstand radial loads and slight bidirectional axial loads, making it suitable for rotating parts in various operating conditions, such as hydraulic pumps and gearboxes, offering strong versatility.

Low Noise and Smooth Operation: The stamped steel cage guides the steel balls to roll smoothly, with radial clearance controlled at 0.005-0.015 mm, resulting in low operating noise (≤65 dB), suitable for noise-sensitive hydraulic systems and components around the cab.

High Wear Resistance and Fatigue Resistance: High-carbon chromium bearing steel with hardening treatment, suitable for medium-low speed (≤8000 rpm) and medium-load conditions, with a fatigue life of over 5000 hours, suitable for the intermittent operation requirements of construction machinery.

Compact Installation Compatibility: With a width of only 15 mm, it adapts to compact equipment installation spaces, and the axial position can be adjusted via spacers, adapting to the layout requirements of multi-axis drive systems.