1B-3978 tapered roller bearing cup for CAT bulldozer spare part

1B-3978 tapered roller bearing cup for CAT bulldozer spare part Featured Image
  • 1B-3978 tapered roller bearing cup for CAT bulldozer spare part

Short Description:

Tapered roller bearing cup for Caterpillar D6K bulldozer, 518/528 skidder, bears radial and one-way thrust load, reduces friction and stabilizes wheel and gear drive.

Product Detail

Product Tags

description

This tapered roller bearing cup serves as the outer race. It must be matched with the corresponding cone assembly. It is designed for combined shock loads, widely used in wheel ends, differential and reduction drives. Pitting, indentation and spalling on raceway cause vibration, noise and overheating, and may lead to roller seizure and damage of gears and seals.

Part No.:1B-3978
Type: Tapered roller bearing cup
Material: Alloy bearing steel
Seal Type: Open, no seal
Load Type: Combined radial and single-direction thrust load
Outer Diameter:93.26 mm
Width:23.80 mm
Working Condition: Medium load, low speed and impact for wheel end and differential drive
Matching System: Wheel reduction, differential assembly

Application Scenarios

Fits Caterpillar D6K track-type tractor, 518, 528 wheel skidder and integrated toolcarrier, for overhaul of wheel reduction and differential assembly.

FAQ 

Q：Can I polish off light rust spots on the race and install it?
A：Not recommended. Polishing changes hardness and profile and accelerates fatigue spalling.

Q：Can off-brand cup with same dimension replace the original Cat part?
A：Not recommended. Taper angle and heat treatment differ, which causes mismatched preload and uneven wear.

Q：What risk will tilted pressing bring?
A：Uneven load on raceway, local stress concentration and early spalling.

Q：Will new bearing cup fix noise if differential housing is deformed?
A：No. Deformed housing keeps misaligning the bearing, noise returns quickly, repair housing first.

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