1B-3980 1B-3978 tapered roller bearing set O-ring for CAT bulldozer spare part

1B-3980 1B-3978 tapered roller bearing set O-ring for CAT bulldozer spare part Featured Image
  • 1B-3980 1B-3978 tapered roller bearing set O-ring for CAT bulldozer spare part
  • 1B-3980 1B-3978 tapered roller bearing set O-ring for CAT bulldozer spare part

Short Description:

Tapered roller bearing set for Caterpillar D6K bulldozer, 518/528 skidder and IT toolcarrier, cone 1B-3980 + cup 1B-3978, bears radial and one-way thrust load for wheel reduction and differential assembly.

Product Detail

Product Tags

description

This matched tapered roller set consists of cone assembly 1B-3980 and cup 1B-3978. It is separable precision lapped bearing for medium shock heavy load, widely used in wheel end and differential reduction drive. Damaged rollers, broken cage, race spalling and incorrect clearance will cause abnormal noise, overheating and axial play, and roller seizure may damage gears and seals.

Part No.:1B-3980 (cone & roller assembly), 1B-3978 (cup)
Type: Tapered roller bearing set
Material: Alloy bearing steel
Seal Type: Open, no seal
Load Type: Combined radial and single-direction thrust load
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 skidder, IT12B, IT18, IT24F, IT28G integrated toolcarrier and 589 pipelayer, for overhaul of wheel reduction and differential assembly.

FAQ 

Q：Can bearing with tiny cage crack be used temporarily?
A：Not recommended. Crack will propagate and cage breakage leads to scattered rollers and gear damage.

Q：Can this single set be reversed to take thrust from two directions?
A：No. Single tapered roller bearing only handles one-way thrust. Two sets are required for bidirectional load.

Q：What problems will insufficient preload bring?
A：Large backlash and impact during start-stop, accelerating fatigue of gear teeth and bearing race.

Q：Will new bearing set eliminate shaft play if journal is scored?
A：No. Scored journal causes cone creep on shaft, repair or replace the shaft first.

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