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DX300 Excavator Travel Gearbox Grey Excavator Construction Machinery Parts

Name: DX300 Excavator Travel Gearbox Grey Excavator Construction Machinery Parts
Brand: Lanzhou Fudong Guangqi Trading Co., Ltd
SKU: DX300
Price: Negotiable USD
Availability: InStock

Model Number:	DX300
MOQ:	1 Pc
Payment Terms:	T/T

Detail Information

Product Description

Detail Information

Place of Origin:

China

Part Name:

Travel Reduction

Productname:

Excavator Machinery Parts

Warranty:

3 Months

Application:

Excavator

Condition:

100% New

Color:

Grey

Origin:

Made In China

Packaging Details:

Carton

Highlight:

DX300 Excavator Travel Gearbox

Excavator Travel Gearbox Grey

Excavator Construction Machinery Parts

Product Description

DX300 Excavator Travel Gearbox Travel Reduction Gearbox Excavator Construction Machinery Parts

In construction machinery applications, the swing reducer of an excavator, commonly called the swing gearbox, acts as an essential transmission unit connecting the slewing motor and large slewing gear ring. It mainly provides speed reduction and torque increase to ensure steady 360° rotation of the upper assembly.

Core Component Structure

Sun Gear: Connected to the spline section of the slewing motor for high‑speed power intake.
Planet Gears: Three to four gears per stage revolve around and rotate on the sun gear to transmit torque.
Ring Gear: Permanently mounted on the housing and engages with planetary gear groups.
Planet Carrier: Delivers output power to drive the bottom small driving gear.
Brake: Built‑in wet multi‑plate braking system, locked by springs and released hydraulically to prevent backward rotation.
Housing and Bearings: High‑strength cast/forged steel housing equipped with heavy‑load bearings, featuring dust and oil leakage resistance.

Power with high rotational speed and low torque from the hydraulic motor flows through the sun gear, two‑stage planetary sets to the planet carrier. The low‑speed high‑torque pinion meshes with the slewing bearing’s inner gear ring, driving the upper body to slew.

Common Malfunctions and Underlying Causes

Abnormal sound and jerky movement: Gear abrasion and pitting corrosion, bearing failure, lack of or contaminated lubricant, unsuitable meshing backlash.
Oil permeation and leakage issues: Deteriorated oil seals, housing fissures, excessive lubricant filling, clogged air vents.
Slow or weak slewing performance: Worn gear and bearing assemblies, partial brake disengagement, internal hydraulic motor leakage, incompatible transmission ratio.
Severe heat buildup: Inadequate oil level, degraded lubrication fluid, overload working conditions, persistent brake friction, inefficient heat radiation.
Gear slipping and broken teeth: Shock loading, foreign debris entry, fatigue aging, shaft alignment errors in assembly.

Machinery Test Report	Provided	Warranty	3 Months
Video outgoing-inspection	Provided	Brand Name	OEM
Place of Origin	China	Part Name	Travel Reduction Assembly
Model	DX300	Keyword	Excavator Machinery Part
MOQ	1 Piece	Quality	Tested Great Performance
Application	Excavator	Delivery Time	7-35 Days
Service	Professsional Service	Condition	Brand New

Company Profile

Tags:

Excavator Machinery Parts

Hydraulic Main Control Valve

Diesel Engine Parts

Hydraulic Main Pump

Excavator Swing Motor

Excavator Travel Motor

Swing Motor Gearbox

Excavator Hydraulic Cylinder

Swing Motor Case

Excavator Joystick Handles

Excavator Foot Pedal Valve

Travel Motor Gearbox

Excavator Turbocharger

products details

DX300 Excavator Travel Gearbox Grey Excavator Construction Machinery Parts

DX300 Excavator Travel Gearbox Grey Excavator Construction Machinery Parts

DX300 Excavator Travel Gearbox

Excavator Travel Gearbox Grey

Excavator Construction Machinery Parts

Core Component Structure

Common Malfunctions and Underlying Causes

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