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Doosan excavator parts DX420 DH420 DH480 0900046 Swing cycle bearing 140109-00007A

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Doosan excavator parts DX420 DH420 DH480 0900046 Swing cycle bearing 140109-00007A

Brand Name : Excavator Slewing Ring

Model Number : DX420 DH420 DH480

Place of Origin : China

MOQ : 1 PCS

Price : Negotiatied price

Payment Terms : T/T,paypal,trade assurance

Supply Ability : 1000 PCS/month

Delivery Time : Within 2 working days

Packaging Details : Standard shipping package

Model : DX420 DH420 DH480

part number : 0900046 140109-00007A

part name : Slewing ring bearings

Application : Crawler Excavator parts

Brand : komatsu

Quality : New

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Doosan excavator parts DX420 DH420 DH480 0900046 Swing cycle bearing 140109-00007A

Appliion
Crawler excavator
Part name
Slew ring bearing
Model
DX420 DH420 DH480
Part number
140109-00007A
Warranty
Negotiable
Payment term
T/T, paypal, trade assurance or as required
After sales service
Online

The slewing ring operates as a large-scale anti-friction bearing:

  1. Rotation Mechanism: The excavator’s hydraulic motor drives a pinion gear that meshes with the slewing ring’s gear teeth, enabling rotation.

  2. Load Distribution: Combines axial (vertical), radial (side), and moment (tilting) loads from digging forces.

  3. Lubrication: Grease reduces friction between rolling elements and raceways, preventing metal-to-metal contact.

Key Physics:

  • Static load capacity: Up to 5,000 kN (for mining excavators).

  • Rotational speed: Typically 0–10 RPM.

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Doosan excavator parts DX420 DH420 DH480 0900046 Swing cycle bearing 140109-00007A

Doosan excavator parts DX420 DH420 DH480 0900046 Swing cycle bearing 140109-00007A


Doosan excavator parts DX420 DH420 DH480 0900046 Swing cycle bearing 140109-00007A


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