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Swing Motor Reducer Assembly for Komatsu PC400-7 PC450-7 PC400-8 PC450-8 Excavator 706-7K-01040 706-7K-01070 208-26-00211

Swing Motor Reducer Assembly for Komatsu PC400-7 PC450-7 PC400-8 PC450-8 Excavator 706-7K-01040 706-7K-01070 208-26-00211

706-7K-01070 swing motor reducer assembly

706-7K-01070

Komatsu PC400-7 Swing Motor Reducer Assembly

Place of Origin:

China

Brand Name:

CAVOYD

Certification:

ISO90001

Model Number:

PC400-7 PC400-8 PC450-7 PC450-8

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Swing Motor Reducer Assembly for Komatsu PC400-7 PC450-7 PC400-8 PC450-8 Excavator 706-7K-01040 706-7K-01070 208-26-00211 Swing Motor Reducer Assembly for Komatsu PC400-7 PC450-7 PC400-8 PC450-8 Excavator 706-7K-01040 706-7K-01070 208-26-00211 Swing Motor Reducer Assembly for Komatsu PC400-7 PC450-7 PC400-8 PC450-8 Excavator 706-7K-01040 706-7K-01070 208-26-00211 Swing Motor Reducer Assembly for Komatsu PC400-7 PC450-7 PC400-8 PC450-8 Excavator 706-7K-01040 706-7K-01070 208-26-00211 Swing Motor Reducer Assembly for Komatsu PC400-7 PC450-7 PC400-8 PC450-8 Excavator 706-7K-01040 706-7K-01070 208-26-00211
Product Details
Part No:
706-7K-01040 706-7K-01070 208-26-00211
Packaging Details:
Wooden Case / Cartonwith Foam Protection, Or As Required
Warranty:
6 Months
Transportation Method:
DHL, UPS, FedEx, Sea Freight
Payment Terms:
Western Union, T/T, Assurance
Condition:
New / Rebuilt
Product Name:
Excavator Swing Assembly
Highlight:

706-7K-01070 swing motor reducer assembly

,

706-7K-01070

,

Komatsu PC400-7 Swing Motor Reducer Assembly

Payment & Shipping Terms
Minimum Order Quantity
1 set
Price
Negotiable
Packaging Details
Wooden Case / Carton with Foam Protection, or as Required
Delivery Time
3-7 Weekdays
Payment Terms
T/T
Supply Ability
100pcs/day
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CONTACT US
86--18127821703
280835749@qq.com
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Product Description
Swing Motor Reducer Assembly for Komatsu PC400-7 PC450-7 PC400-8 PC450-8 Excavator
Procurement Guidelines
  • Verify OEM part numbers: 706-7K-01040, 706-7K-01070, 208-26-00211
  • Confirm assembly compatibility with PC400-7 models, including swing motor, reducer, and parking brake components
  • Request bench test reports for pressure, rotating torque, and internal leakage for both new and remanufactured units
  • For remanufactured assemblies, verify replacement of pistons, valve plates, planetary gears, bearings, and oil seals
  • Inspect housing for cracks and check oil seal integrity upon arrival
  • Protect ports during handling to prevent contamination
  • Secure assembly during transportation to prevent impact damage to shafts and gear components
  • Clean connecting pipelines before installation, replace hydraulic filters, and properly bleed air from system
  • Test swing speed, swing torque, parking brake function, and check for oil leakage after installation
Common Fault Analysis
  • Piston & Valve Plate Wear, High Internal Leakage
    Symptoms: Weak swing power; swing slows under load; temperature rises when hot
    Cause: Dirty hydraulic oil causes wear of friction pairs
  • Planetary Gear / Bearing Damage, Abnormal Noise
    Symptoms: Grinding or knocking noise during rotation; swing jitter
    Cause: Lack of gear oil, gear tooth wear or damaged bearing
  • Parking Brake Failure
    Symptoms: Swing slips on slope; brake cannot release, unable to rotate
    Cause: Damaged brake disc, weak spring, blocked brake oil passage
  • Oil Seal Leakage
    Symptoms: Oil leaks from motor shaft or reducer joint surface
    Cause: Aged seals, high internal pressure, shaft surface scratch
  • Stuck Counterbalance Valve
    Symptoms: Swing jerky, slow start or stop, impact during rotation
    Cause: Dirt stuck in valve spool, spring fatigue
  • Output Shaft Spline Wear
    Symptoms: Power transmission unstable; swing no response under heavy load
    Cause: Spline abrasion due to long-time impact load
Swing motor reducer assembly technical diagram showing internal components Close-up view of swing motor reducer assembly mounting and connection points
Tags：

swing reducer gearbox

excavator swing motor

hydraulic swing motor

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Guangzhou Kawo Construction Machinery Co.,Ltd.
With 20 years of professional experience in construction machinery hydraulics, CAVOYD focuses on hydraulic spare parts supply and remanufacturing for excavators, bulldozers and loaders. We mainly supply hydraulic pumps, control valves, swing assemblies, travel assemblies, fan pumps and fan motors. Our parts fit Caterpillar, Komatsu, Volvo, Hitachi, Kobelco, Sany, Doosan and other mainstream brands. We provide high-quality new parts and precision remanufactured parts, serving global clients wit
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