OEM 860178146 The XCMG Planetary Gear 860178146 is a genuine OEM planet gear that runs inside the planetary carrier of the swing or travel reduction gearbox on XCMG hydraulic excavators.
Stamped with part number 860178146, this factory gear is cut to the original drawing, so it meshes with the sun gear and ring gear without binding or uneven contact.
The gear is machined from carburizing alloy steel, with teeth cut on a precision hob and bores finished to accept the planet pin.
Exact module, tooth count, pressure angle and bore diameter match the XCMG specification, so the gear sets into the carrier at the correct position.
Carburizing hardens the tooth flanks to the specified range, which resists pitting under the high contact loads of swing and travel duty.
Every gear is checked for tooth profile, bore size and runout before packing, so the part received matches the factory specification exactly.
The 860178146 planetary gear is cut from carburizing alloy steel, so the tooth flanks harden to HRC 58–62 while the core stays tough.
Tooth profile and pressure angle follow the XCMG drawing, so the planet gear meshes evenly with the sun gear and ring gear.
Precise bore diameter lets the planet pin and bearing seat correctly, so the gear rotates freely without rocking on the pin.
Controlled runout keeps backlash stable across the carrier, which reduces noise and prevents uneven tooth wear.
Correct module and tooth count restore the original planetary ratio, so swing or travel speed returns to factory setting.
The gear is a direct replacement, so a technician rebuilds the carrier in the expected time without machining work.
A rust-preventive coating on exposed faces keeps the gear clean in storage and eases inspection before installation.
Production starts with certified alloy steel bar checked for grade, hardenability and internal soundness before machining.
Blanks are turned to the drawing, and teeth are cut on a precision hob that reproduces the module and pressure angle.
Carburizing and quenching follow a controlled cycle, and hardness is verified on samples so the tooth surface meets the specified range.
Tooth flanks and bores are ground after heat treatment to correct distortion, so profile and lead stay within tolerance.
Inspectors check tooth profile, bore size and runout against a gear checking fixture made for this part number.
Batch records trace every 860178146 gear to its steel heat and hobbing program, so a quality question is settled quickly.
The planet gears share the load between the sun gear and ring gear, so torque is divided across several teeth at once.
A worn planet gear causes noise, vibration and uneven rotation, and it can damage the sun gear, ring gear and carrier.
The genuine 860178146 restores the correct tooth contact pattern, so load spreads evenly and pitting is avoided.
Correct backlash from accurate cutting prevents binding and overheating, which extends bearing and pin life.
A sound planetary set keeps swing and travel smooth, which protects the hydraulic motor and reduces unplanned downtime.
The 860178146 planetary gear installs with a press, bearing heater and hand tools during gearbox service.
Drain the gearbox oil, remove the cover and take out the planetary carrier before dismantling the old gear set.
Inspect the pins, bearings, sun gear and ring gear for wear, and replace any part that shows pitting or scoring.
Fit the new gears on their pins with the correct thrust washers, and check that each one turns freely by hand.
Reassemble the carrier, check backlash and end play, and confirm the gears mesh without binding.
Refill with the specified gear oil, run the machine slowly, and listen for unusual noise during the first cycles.
At service intervals, check oil condition and inspect the gears through the cover for wear or metal debris.
Every 860178146 gear is produced in an ISO 9001 and ISO 14001 certified plant with traceability from steel to packed carton.
Incoming steel is tested for grade and hardenability, and finished gears are measured for tooth profile, bore size and runout.
Hardness is checked after heat treatment, and the results are recorded against the batch number for full traceability.
Post-production checks include visual inspection, dimensional verification and a trial mesh on the XCMG carrier fixture.
Sample gears from each batch undergo load, fatigue and salt spray tests to confirm long-term performance in service.
Cheap copies often skip proper carburizing and grinding, so the teeth wear or chip quickly under the high loads of the carrier.
A gear with the wrong module or tooth count changes the planetary ratio, which affects speed, torque and control response.
The genuine 860178146 is cut to the XCMG drawing, so module, tooth count, bore and face width match the original part.
Using genuine XCMG parts also preserves warranty coverage, protects resale value and keeps compatibility with other OEM components.
Backed by XCMG global quality standards and technical support, this planetary gear performs reliably in harsh conditions.
Choosing the genuine 860178146 gear prevents a small tooth defect from turning into a full carrier or gearbox rebuild.
A failed planet gear can seize the carrier and damage the sun gear, ring gear and motor, which stops the machine for days.
Proper hardness and accurate grinding keep the gear working across a long life, which reduces replacement frequency.
Reliable power transmission also extends bearing, pin and oil life, lowering the total cost of ownership for fleets.
Service records from construction and mining fleets show genuine XCMG drive parts cut unplanned downtime.
XCMG builds the 860178146 gear with efficient machining programs and controlled heat treatment that keep energy use low.
A long working life means fewer replacements, which lowers the raw material and energy tied to each gear.
Preventing oil leaks around the gearbox protects soil and groundwater, helping operators meet site regulations.
The steel and coating in this part comply with RoHS and REACH requirements for safe handling and responsible recycling.
The 860178146 planetary gear is stocked in XCMG depots serving North America, Europe, Asia and Australia.
Each gear is wrapped in rust-preventive material and boxed in a strong carton that guards against impact and damp.
Fleet buyers can request volume pricing and combined freight, which simplifies planning and lowers landed cost.
Live stock data and responsive supply teams help cover urgent requests fast, so machines return to work sooner.
Careful packing keeps the gear in factory condition until fitting, avoiding the tooth damage seen in loose stock.
The XCMG Planetary Gear 860178146 is a key drive component on XCMG excavators, running inside the planetary carrier of the swing or travel gearbox.
Its carburized alloy teeth, accurate bore and precise tooth profile deliver dependable torque in hot, wet and dusty conditions.
By restoring correct mesh and backlash, this gear cuts noise, lowers repair bills and protects the carrier, sun gear and motor.
Buy only genuine XCMG parts from authorised dealers to secure real quality, correct fitment and lasting performance.
Specify the 860178146 planetary gear for dependable power transmission and confident, trouble-free servicing.
Work with XCMG, a trusted supplier of engine and hydraulic components for heavy equipment that delivers real value.
OEM 860178146 – XCMG Planetary Gear – the definitive planetary gear for reliable power transmission in your excavator reduction gearbox. Cut and hardened to the drawing, ground for smooth mesh, and backed by global quality standards. Trust the original to protect your investment and maximise uptime.
