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Home > Products > Excavator Machinery Parts >
Crawler Excavator Spare Parts Swing Gearbox DH60 Reduction Reducer Gearbox for Doosan

Crawler Excavator Spare Parts Swing Gearbox DH60 Reduction Reducer Gearbox for Doosan

swing gearbox dh60

dh60 swing drive gearbox

Place of Origin:

China

Model Number:

DH60

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Crawler Excavator Spare Parts Swing Gearbox DH60 Reduction Reducer Gearbox for Doosan Crawler Excavator Spare Parts Swing Gearbox DH60 Reduction Reducer Gearbox for Doosan
Product Details
Type:
Excavator Spare Parts
Machine Model:
DH60
Condition:
100% New
Application:
Excavator
Packing:
Carton Box
Productname:
Excavator Machinery Parts
Highlight:

swing gearbox dh60

,

dh60 swing drive gearbox

Payment & Shipping Terms
Minimum Order Quantity
1 Pc
Packaging Details
Carton
Delivery Time
7-35days
Payment Terms
T/T
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Product Description

Crawler Excavator Spare Parts Swing Gearbox DH60 Reduction Reducer Gearbox for Doosan

Known colloquially as the swing gearbox, the swing reducer of an excavator is a critical transmission component that connects the slewing motor with the large slewing gear ring. It mainly functions to slow down rotational speed and boost torque, facilitating smooth 360° rotation of the upper body assembly.
Main Components
Sun Gear: Attached to the slewing motor’s splines, it inputs high‑speed power.Planet Gears: 3‑4 gears per stage, rotating both around and on the sun gear for torque transmission.Ring Gear: Fixed inside the housing and meshes with planet gears.Planet Carrier: Provides power output to drive the bottom pinion gear.Brake: Built‑in wet‑type multi‑plate brake; engaged by springs and released hydraulically to prevent reverse rotation.Housing and Bearings: Heavy‑duty cast or forged steel housing supported by high‑load bearings, dust‑proof and leak‑resistant.
Low‑torque high‑speed power from the hydraulic motor is delivered through the sun gear, first and second planetary gear sets to the output planet carrier. The low‑speed high‑torque pinion meshes with the slewing bearing’s inner gear ring, making the upper structure slew.
Common Failures & Root Reasons
Abnormal sound / Stuttering operation: Gear abrasion and pitting corrosion, bearing breakdown, lack of lubricant or dirty oil, unsuitable meshing clearance.
Oil oozing and leaking: Damaged oil seals, housing fractures, overfilled lubricant, blocked breather hole.
Lazy or weak slewing: Worn gears/bearings, partial brake release, hydraulic motor internal bypass flow, incompatible gear ratio.
Excessive heat buildup: Low oil quantity or degraded lubrication oil, overloading, continuous brake friction, inefficient heat dissipation.
Gear jumping / Broken gear teeth: Shock loads, foreign matter entry, fatigue aging, misaligned shafts during installation.
Machinery Test Report Provided Warranty 3 Months
Video outgoing-inspection Provided Brand Name OEM
Place of Origin China Part Name Swing Reduction Assembly
Model DH60 Keyword Swing Gearbox
MOQ 1 Piece Quality Tested Great Performance
Application Excavator Delivery Time 7-35 Days
Service Professsional Service Condition Brand New




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Excavator Spare Parts

Construction Machinery Parts

Crawler Excavator Parts

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