304-9651: Bearing – Ball(Debris Resistant)

CAT 304-9651 is a Caterpillar single-row deep groove ball bearing, suitable for light-load, high-speed applications, bearing radial and bidirectional axial loads. Key information is as follows:

Key Parameters
Item Details
Type: Single-row deep groove ball bearing, outer ring with dust cover, non-contact seal, allows shaft-to-bore misalignment angle ≤0.5°, suitable for light-load, high-speed applications, bearing radial + bidirectional axial loads

Dimensions (Metric/Imperial): Inner diameter approx. 38.10 mm (1.5 inches), outer diameter approx. 72.00 mm (2.8346 inches), width approx. 14.29 mm (0.5625 inches), suitable for corresponding journals and mounting space

Materials: Inner/outer rings are made of high-carbon chromium bearing steel (SUJ2), quenched and tempered, hardness HRC60-64; balls are made of bearing steel, surface ultra-fine ground, roughness… Ra≤0.1μm; Cage is made of Nylon 66, improving operational stability and lubrication.

Accuracy: Inner diameter tolerance ±0.008mm, outer diameter tolerance ±0.012mm, radial clearance C0 grade (0.005-0.015mm), suitable for smooth operation under light load and high speed conditions.

Load Capacity: Dynamic load rating approximately 15.2kN, static load rating approximately 7.8kN, suitable for medium-low speed, light load, and non-impact conditions, and compatible with auxiliary transmission parts of equipment.

Suitable Scenarios: Suitable for hydraulic pump shaft ends, fan pulleys, steering knuckles, etc., of equipment such as Cat 304/305 CR mini excavators, 420F2 loaders, and 259D skid steer loaders, to reduce friction of rotating parts and ensure smooth operation.

Suitable for routine maintenance or fault replacement of equipment, preventing problems such as vibration, abnormal noise, and reduced transmission efficiency caused by bearing wear, suitable for light-duty scenarios such as municipal and landscaping applications.

Performance Characteristics: Single-row deep groove ball bearing design, simple structure, easy installation, suitable for light-load, high-speed applications, with an upper speed limit approximately 30% higher than self-aligning bearings of the same size.

Nylon cage paired with bearing steel balls, low coefficient of friction, operating noise ≤55dB, suitable for noise-sensitive areas such as the area around the equipment cab.

Non-contact dust cover design, IP54 protection rating, prevents dust and moisture from entering the bearing, extending grease life, suitable for outdoor operating environments.

Alternative Models: Direct replacements: 1F-0651, 2D-9454, interchangeable, suitable for the same equipment and installation conditions.