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{"title":"706-7K-01040 207-26-00200 Swing Reducer Gearbox For Komatsu PC300\u20117 PC350\u20117","imgUrl":"https:\/\/img.chinax.com\/nimg\/bb\/f5\/a14bbffacd0aecb92c381458b901-200x200-1\/706_7k_01040_207_26_00200_swing_reducer_gearbox_for_komatsu_pc300_e2_80_917_pc350_e2_80_917_pc360_e2_80_917.jpg","attrs":{"Delivery Time":"3-8 Working Days","Packaging Details":"Wooden Case \/ Carton with Foam Protection, or as Required","Condition":"New \/ Rebuilt","Part No":"706-7K-01040 207-26-00200"}}
{"title":"Swing Motor Reducer Assembly for Komatsu PC2000-8 Excavator 21T-26-00300 21T-26","imgUrl":"https:\/\/img.chinax.com\/nimg\/81\/66\/aa2abf77efd4aa9a200a7dea2ae6-200x200-1\/swing_motor_reducer_assembly_for_komatsu_pc2000_8_excavator_21t_26_00300_21t_26_00400_706_7k_01180.jpg","attrs":{"Brand Name":"CAVOYD","Model Number":"pc2000-8","Condition":"New \/ Rebuilt","Delivery Time":"3-7 Weekdays"}}
{"title":"Swing Motor Reducer Assembly for Komatsu PC1250-7 PC1250-8 Excavator 21N-26","imgUrl":"https:\/\/img.chinax.com\/nimg\/78\/02\/edc9df9bd442d90caca20bf4ff93-200x200-1\/swing_motor_reducer_assembly_for_komatsu_pc1250_7_pc1250_8_excavator_21n_26_00120_21n_26_00070.jpg","attrs":{"Part No":"21N-26-00120 21N-26-00070","Condition":"New \/ Rebuilt","Price":"Negotiable","Model Number":"PC1250-7\u3001PC1250-8"}}
{"title":"Swing Motor Reducer Assembly for Komatsu PC1250-7 Excavator 706-77-01320","imgUrl":"https:\/\/img.chinax.com\/nimg\/d7\/60\/f3249fecba84abe21090abd3edd8-200x200-1\/swing_motor_reducer_assembly_for_komatsu_pc1250_7_excavator_706_77_01320.jpg","attrs":{"Model Number":"PC1250-7 PC1100-6","Part No":"706-77-01320","Transportation Method":"DHL, UPS, FedEx, Sea Freight","Packaging Details":"Wooden Case \/ Cartonwith Foam Protection, or as Required"}}
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
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
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Trading Company,Manufacturer
Year Established:
2017
Total Annual:
$1 Million -US$5 Million
Employee Number:
80~100
Ecer Certification：
Verified Supplier
Guangzhou Kawo Construction Machinery Co., Ltd.
Company Profile
Professional Excavator Hydraulic Products Manufacturer & Service Provider
Founded in 2017, Guangzhou Kawo Construction Machinery Co., Ltd. is a professional manufacturer and service provider specializing in excavator hydraulic produ... Guangzhou Kawo Construction Machinery Co., Ltd.
Company Profile
Professional Excavator Hydraulic Products Manufacturer & Service Provider
Founded in 2017, Guangzhou Kawo Construction Machinery Co., Ltd. is a professional manufacturer and service provider specializing in excavator hydraulic produ...
