CAT 7Y-0846 Bearing – Needle(Debris Resistant)

CAT 7Y-0846 is a Caterpillar genuine double-row tapered roller bearing assembly, suitable for drive axle/steering axle differentials or wheel hubs of wheel loaders, bulldozers, and other equipment, used to withstand heavy radial loads and bidirectional axial thrust. The following is precise original part information:

Core Technical Parameters
Item Details
Part Model: CAT 7Y-0846 (7Y0846) Double-row tapered roller bearing assembly, weighing approximately 3.2 kg (7.05 lb), suitable for heavy-duty drive axle/steering axle differentials and wheel hub support applications.

Core Material: Inner and outer rings and rollers are made of GCr15SiMn high-carbon chromium bearing steel, integrally quenched and tempered, hardness HRC 60-64; the cage is made of stamped steel plate, riveted; the outer ring has an integrated sealing lip, suitable for dusty and vibrating conditions in construction machinery.

Key Dimensions: Inner diameter 88.9 mm (3.50 in), outer diameter 165.1 mm. 57.15 mm (6.50 in), width 57.15 mm (2.25 in), cone angle 10°30′, outer ring with mounting groove, double-row tapered roller integrated seal structure.

Structural Features: Double-row symmetrical tapered roller design, capable of simultaneously withstanding large radial loads and bidirectional axial thrust; integrated seal protects against mud, sand, and oil intrusion, suitable for low-speed heavy-load and frequent start-stop conditions, ensuring stable operation of the axle assembly.

Compatible Models: Compatible with CAT 966G/972G wheel loaders (drive axle differential bearing), D6R/D6T bulldozers (steering axle hub bearing), 773E mining trucks (front axle differential support bearing), 3406C engine transmission system.

Accessories: Compatible with 88.9 mm diameter drive axle/steering axle half-shafts, differential housings, and matching installation tools: CAT 1U-7360 bearing puller, CAT 9J-3204. Bearing Mounting Sleeve
Core Functions and Installation Points
Heavy-duty Support: Used in drive axle/steering axle differentials or wheel hubs to withstand large radial loads and bidirectional axial thrust. Suitable for heavy-duty and bumpy working conditions in construction machinery, preventing axial movement and abnormal wear of components.
Installation Specifications
Clean the journal, bearing housing bore, and component surfaces to remove oil and burrs. Check the compatibility of the journal tolerance (k6) and bearing housing bore tolerance (J7).

Use 80-100°C hot oil to heat-install the inner ring. Gently press the outer ring into the bearing housing bore; do not hammer. Ensure the bearing is not deformed. Pay attention to the direction of the tapered rollers during installation to ensure symmetrical force distribution.

After installation, adjust the preload (controlled by adjusting the nut). Check the radial clearance (0.012-0.025 mm) to ensure smooth operation and zero axial clearance.

Maintenance Recommendations: Check bearing temperature and for unusual noises every 1500 working hours. If the temperature exceeds 85°C or abnormal noise is heard, disassemble and repair the bearing. If peeling or cracks are found on the rollers or raceways, replace with genuine parts immediately.

When replacing bearings, always use genuine CAT 7Y-0846 parts of the same model to avoid premature bearing failure or bridge assembly damage due to incompatible dimensions or materials.