7T-4145 sleeve bearing for CAT bulldozers spare part

7T-4145 sleeve bearing for CAT bulldozers spare part Featured Image
  • 7T-4145 sleeve bearing for CAT bulldozers spare part
  • 7T-4145 sleeve bearing for CAT bulldozers spare part

Short Description:

Sleeve bearing for Caterpillar D9 / D10 series bulldozer frame joint, fitted on blade and ripper pivot pin, reduces friction by lubrication film, absorbs impact and keeps stable pivot clearance.

Product Detail

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description

This sleeve bearing is made of high-grade hardened steel with precision bored inner surface. It is designed for heavy pivot joint of bulldozer. The pin swings inside the bushing, and lubricant film separates metal contact. Bore enlargement, scoring, end crush and clogged grease passage will lead to excessive play, blade wobble, noise and grease loss. Sand ingress causes galling and even joint binding.

Part No.:7T-4145
Type: Sleeve bearing /pivot bushing
Material: Hardened alloy steel
Process: Turning, heat treatment, bore superfinishing
Working Condition: Alternating impact and muddy environment for bulldozer pivot joint
Matching System: Frame pivot assembly

Application Scenarios

Fits Caterpillar D9R, D9T, D10N, D10R, D10T track bulldozers, for overhaul of blade and ripper pivot joint.

FAQ 

Q：Can slightly scratched bushing bore be reused after polishing?
A：Not recommended. Scratch damages wear layer, loose fit lets silt in and accelerates wear.

Q：Can old pin with minor wear be reused with new bushing?
A：Check pin roundness. If pin has step wear, mismatched pair will wear rapidly.

Q：What risk if grease hole is misaligned after pressing?
A：No lubricant reaches contact surface, dry friction causes galling and binding quickly.

Q：Does loose pivot joint mean only bushing is damaged?
A：Check pin, thrust washer and lock structure first before confirming bushing failure.

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