Description
177-4147: Bearing – Cone(Debris Resistant)
| 177-4147: Bearing – Cone(Debris Resistant) |
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CAT 177-4147 is Caterpillar’s chip-resistant bearing inner ring, suitable for heavy-duty construction machinery tapered roller bearings. Its core function is to prevent dust, sand, and other debris from entering the bearing raceway, protecting the rollers and raceway, and extending the bearing assembly’s life. Key information is as follows:
Core Parameters
Item Details
Type: Inner ring of a bearing with integrated chip-resistant flange, suitable for single/double row tapered roller bearings, used in drive axles/gearboxes of loaders, bulldozers, and other equipment operating in dusty conditions.
Dimensions (Metric/Imperial): Inner diameter 120.65mm (4.750 inches), Outer diameter 150.00mm (5.906 inches), Width 35.00mm (1.378 inches), Flange height 5.00mm (0.197 inches), Weight approx. 1.85kg (4.08 lbs)
Material: High carbon chromium bearing steel (SAE 52100), integrally quenched + low-temperature tempered, hardness… HRC60-64, hard chrome plated on the flange surface (thickness 0.05-0.10mm, hardness HRC70+), improving wear resistance and anti-chip adhesion ability.
Anti-chip structure: Integrated anti-chip flanges on both sides of the inner ring, forming a double barrier with the bearing seal ring/dust cover. The inner side of the flange has a spiral chip guide groove to guide intruding chips and prevent them from entering the raceway.
Precision: Inner diameter roundness ≤0.002mm, surface roughness Ra≤0.4μm, flange perpendicularity ≤0.01mm, suitable for high-precision bearing operation requirements.
Suitable scenarios: Suitable for Cat 980H loader drive axle main reducer bearings, D8T bulldozer gearbox output shaft bearings, 777G mining truck differential bearings, etc., for dusty and sandy working conditions, preventing bearing raceway wear and roller jamming caused by chips.
Suitable for replacement during equipment overhauls/main repairs when the inner ring raceway is worn, the flange is deformed, the chrome plating is peeling off, or the chip guide groove is clogged, ensuring bearing cleanliness and stable operation.
Performance Features: Integrated flange + spiral chip guide groove design provides significant chip prevention, reducing chip intrusion by over 90% compared to ordinary inner rings, lowering the risk of premature bearing failure.
Made of high-carbon chromium bearing steel, offering excellent strength and wear resistance. The overall quenching process ensures uniform hardness throughout the inner ring, suitable for heavy-load and impact conditions.
Hard chrome plating on the flange enhances surface hardness and scratch resistance, reducing chip wear on the flange and extending the inner ring’s service life.
