CAT 5F-5363 BEARING

CAT 5F-5363 (5F5363) is a Caterpillar genuine single-row tapered roller bearing, suitable for differentials, wheel ends, or final drives of excavators/loaders. The following is core technology and compatibility information specific to genuine parts (no alternative parts available):

Core Technical Parameters (Genuine Part Exclusive)

Item Details
Part Model: CAT 5F-5363 (5F5363) Single-row Tapered Roller Bearing (Suitable for differentials/wheel ends/final drives, withstands radial + unidirectional axial combined loads, genuine design, no alternative parts available)

Core Materials: Rings/Rollers: GCr15SiMn bearing steel (HRC 58–62), raceways ultra-fine ground (Ra≤0.08 μm), Cage: Stamped steel plate + nylon guide ring, cone angle 12°30′, compatible with Caterpillar-specific lithium-based grease (NLGI 2, -30℃ to + (120℃)

Key Dimensions: Inner diameter 100 mm, outer diameter 180 mm, width 46 mm, taper of the conical bore 1:12, rolling element diameter 18 mm, quantity 22 pieces, mounting surface runout tolerance ≤0.02 mm, compatible with M16×1.5 bolts (mounting hole spacing 160 mm)

Single Weight: Approx. 4.8 kg (10.58 lb)

Compatible Machines: CAT 320D/320F excavators (differential), 950H/962H wheel loaders (wheel end), compatible with final drive models 8J-1998/8J-1999, often used with 5F-5364 outer ring and 5F-5365 seal ring

Operating Fit: Rated radial load 480 kN, rated axial load 180 kN, limiting speed 2800 rpm, operating temperature -40℃ to + 140℃, suitable for heavy-duty impact + slight interference fit of shaft system.

Core Functions and Structural Features (Original Design):

Combined Load Bearing: Single-row tapered roller structure, suitable for radial + unidirectional axial combined loads of differential/wheel end, ensuring transmission system stability. Original cone angle and contact angle match the overall machine stress characteristics.

High-Precision Guiding Design: Inner ring with single flange, combined with nylon guide ring, precisely guides roller movement, prevents skewing, reduces vibration and noise (≤72 dB), suitable for high-speed rotation conditions.

Original Tolerance Matching: The fit clearance with 5F-5364 outer ring and 5F-5365 seal ring is controlled within 0.01–0.02 mm, ensuring sealing and lubrication effects, conforming to Caterpillar’s overall machine assembly standards.

Impact Resistance Enhancement: Made of GCr15SiMn steel with quenching treatment, it withstands an impact load of 550 kN. The stamped steel cage resists deformation, making it suitable for harsh on-site conditions. Original factory life exceeds 8000 hours.

Installation and Maintenance Points (Original Factory Specifications)

Installation Specifications (Original Factory Procedures):
Clean the mounting surfaces, ensuring they are free of rust, oil, and burrs. Bearing housing tolerance: +0.01–+0.02 mm; journal tolerance: 0–-0.01 mm, ensuring precise fit.

Hot fitting (oil temperature 80–90℃, heating for 20–25 min), using a special sleeve for press fitting. Do not strike the end face to avoid damage to the raceway/rollers.

Tighten symmetrically with M16×1.5 bolts (grade 10.9), torque 180–200 N・m, controlling the preload clearance to 0.03–0.05 mm.

Maintenance Recommendations (Original Manufacturer Requirements):

Inspect the bearing condition every 1000 working hours, checking for cracks, raceway peeling, seal damage, and grease leakage. Replace according to original manufacturer standards.

Use Caterpillar-specific lithium-based grease for lubrication. Add 80–100 g each time, purging out old grease. Avoid mixing with other brands of grease.

When replacing bearings, always use genuine CAT 5F-5363 bearings, ensuring compatibility with the matching outer ring and seals to guarantee the performance of the entire machine’s transmission system.