OEM 860178143 The XCMG Spur Gear 860178143 is a genuine OEM straight-tooth gear that transmits rotary power inside the swing or travel reduction gearbox of XCMG hydraulic excavators.
Stamped with part number 860178143, this factory gear is cut to the original drawing, so it meshes with the mating shaft and gear train without filing, shimming or adjustment.
The gear is machined from high-strength carburizing alloy steel, with teeth cut on a precision hob, then carburized, quenched and ground to the specified profile.
Exact module, tooth count, pressure angle, bore and keyway match the XCMG drawing, so the gear seats on the shaft and engages its mate at the correct center distance.
A hardened surface layer reaching HRC 58–62 resists pitting and wear, while the tough core absorbs the shock loads of digging and swinging.
Every gear is measured for tooth profile, runout, bore fit and hardness before packing, so the part received matches the factory specification exactly.
The 860178143 gear is cut from carburizing alloy steel, so the tooth flanks harden to HRC 58–62 while the core stays tough against shock loads.
Tooth profile and pressure angle follow the XCMG drawing, so the gear meshes smoothly with the mating gear and shaft at the correct center distance.
Precise bore and keyway dimensions let the gear slide onto the shaft and seat against the shoulder without filing or shimming.
Controlled runout keeps backlash stable, which reduces gear noise and prevents uneven tooth wear over long service intervals.
Correct module and tooth count restore the original gear ratio, so swing or travel speed returns to factory specification.
Because the gear is a direct replacement, a technician rebuilds the gearbox in the expected time without modification work.
A rust-preventive coating on the 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 are ground after heat treatment to correct distortion, so profile and lead stay within tolerance.
Inspectors check tooth profile, runout, bore and keyway against a gear checking fixture made for this part number.
Batch records trace every 860178143 gear to its steel heat and hobbing program, so a quality question is settled quickly.
The spur gear transfers rotary motion from one shaft to another inside the reduction gearbox, setting the output speed and torque of the swing or travel function.
A worn or chipped gear causes noise, vibration and uneven motion, and it can damage the mating gear if left in service.
The genuine 860178143 restores the correct tooth contact pattern, so load spreads across the flank instead of concentrating on one edge.
Correct backlash from accurate tooth cutting prevents binding and overheating, which extends bearing and seal life.
A sound gear train keeps swing and travel functions smooth, which protects the hydraulic motor and reduces unplanned downtime.
The 860178143 spur gear installs with a press, bearing heater and hand tools during gearbox service.
Drain the gearbox oil, remove the cover and clean the housing before taking out the shaft and old gear.
Inspect the shaft, bearings and mating gear for wear, and replace any part that shows pitting or scoring.
Heat the new gear evenly if an interference fit is specified, then press it onto the shaft until it seats against the shoulder.
Check backlash with a dial indicator and confirm the tooth contact pattern before closing the housing.
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 gear through the inspection cover for wear or metal debris.
Every 860178143 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, runout and bore fit.
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 gearbox 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 shock loads of digging.
A gear with the wrong module or tooth count changes the gear ratio, which affects speed, torque and control response.
The genuine 860178143 is cut to the XCMG drawing, so module, tooth count, bore and keyway 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 spur gear performs reliably in harsh conditions.
Choosing the genuine 860178143 gear prevents a small tooth defect from turning into a full gearbox rebuild.
A failed gear can seize the shaft and damage the hydraulic motor, which takes the machine out of service for days.
Proper hardness and accurate tooth grinding keep the gear working across a long life, which reduces replacement frequency.
Reliable power transmission also extends bearing, seal 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 860178143 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 860178143 spur 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 Spur Gear 860178143 is a key drive component on XCMG excavators, transmitting power inside the swing or travel reduction 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 gearbox and hydraulic motor.
Buy only genuine XCMG parts from authorised dealers to secure real quality, correct fitment and lasting performance.
Specify the 860178143 spur 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 860178143 – XCMG Spur Gear – the definitive spur gear for reliable power transmission in your excavator reduction gearbox. Cut to the drawing, hardened for durability, and backed by global quality standards. Trust the original to protect your investment and maximise uptime.
