The 800106837 Gear is a genuine XCMG power transmission component manufactured for heavy‑duty motor grader drivetrains. This precision‑engineered gear is used in the transmission, final drive hub, and differential assemblies of XCMG GR series graders. Designed from high‑alloy steel with case‑carburizing and tooth grinding, the 800106837 gear delivers reliable torque transfer, high shock load resistance, and extended service life under the most severe grading and ripping applications.
The 800106837 gear features optimized involute tooth geometry with tip relief and root fillet enhancement, reducing noise and bending stress. It directly replaces worn, cracked, or broken gears in the output shaft assembly or wheel drive system of XCMG GR135, GR165, GR180, GR215, GR260, GR300, and GR350 motor graders. A failed gear leads to power loss, irregular motion, contamination debris, and possible drivetrain seizure.
Every genuine 800106837 gear is 100% magnetic particle inspected and hardness profiled. Shot peening and phosphate coating add fatigue strength and corrosion resistance. Replacing a damaged gear with the original XCMG 800106837 restores original equipment reliability, ensures proper backlash, and protects mating components from premature failure.
| Parameter | Specification |
|---|---|
| OEM Number | 800106837 |
| Brand | XCMG (Genuine Original Equipment) |
| Product Type | Spur / Helical Gear – Transmission & Final Drive |
| Module (Metric) | 4.5 mm (ISO 54 / DIN 780) |
| Number of Teeth | 30 (driven gear – output shaft) |
| Pressure Angle | 20° (full‑depth involute) |
| Face Width | 42 mm (±0.06 mm) |
| Material | Alloy Steel 20CrMnTiH (EN 10084 / SAE 5120 equivalent) |
| Heat Treatment | Carburizing + Quenching + Tempering + Shot Peening |
| Surface Hardness | 58–62 HRC (case depth 0.9–1.3 mm) |
| Core Hardness | 33–39 HRC |
| Accuracy Grade | DIN 6 / AGMA 12 (ground and superfinished) |
| Tooth Profile Modification | Tip relief + root radius optimization + crowning |
| Weight | 3.95 kg (approx. 8.7 lbs) |
| Max. Transmissible Torque | 1800 N·m (service factor 1.5 for grader duty) |
| Lubrication Type | Splash / forced oil – SAE 80W‑90 or 85W‑140 |
| Compatible Models | XCMG GR135, GR165, GR180, GR215, GR260, GR300, GR350 motor graders |
| Superseded Part Numbers | 800106801, 800106815, 800106828, 800106834 |
The XCMG 800106837 gear is a core element of the motor grader’s power transmission chain. It transfers rotational torque from the gearbox to the final drive hubs, converting engine power into tractive effort for blade positioning and heavy drawbar loads.
This gear is typically located in the output section of the transmission or inside the tandem drive housing. Its precise tooth geometry ensures uniform load distribution, reducing vibration and noise during high‑torque, low‑speed grading operations.
A worn or damaged 800106837 gear will cause slipping, whining noises, erratic wheel motion, metal particles in the oil, and eventual driveline lock‑up. Replacement with the genuine XCMG part restores original drivetrain efficiency and prevents collateral damage to bearings, shafts, and mating gears.
Each 800106837 gear begins as a closed‑die forging from 20CrMnTiH alloy steel. The forging process aligns the metal grain flow along the tooth root and flank, dramatically increasing bending fatigue strength compared to cut‑from‑bar gears.
After rough turning, the gear undergoes carburizing in a sealed quench furnace, creating a high‑carbon case (58–62 HRC) while maintaining a tough, ductile core (33–39 HRC). This combination resists pitting and tooth breakage under shock loads.
The teeth are profile‑ground using CNC gear grinders with integrated inspection. Tip relief and root fillet optimization are applied to reduce stress risers. 100% of production is verified with coordinate measuring machines (CMM) and magnetic particle crack detection.
Replacing the 800106837 gear requires draining the lubricant and removing the transmission or final drive cover. Always refer to the XCMG service manual for your specific GR model. Clean all components meticulously before disassembly.
Inspect the mating gear, bearings, shaft journals, and thrust washers for wear. Replace any worn parts simultaneously. Heat the new gear to 100–120°C (212–248°F) in an oil bath or induction heater for easier installation; never use an open flame.
Torque the retaining nut or bolt to factory specification (typically 300–340 N·m). Verify backlash (0.15–0.25 mm) and tooth contact pattern using engineer’s blue. Fill with approved grade of gear oil and run the grader at idle to check for noise or vibration.
Common indicators that the 800106837 gear requires replacement: visible pitting or spalling on tooth flanks, chipped or broken teeth, metallic glitter in the oil, excessive backlash, and a howling or clunking noise that changes with speed or load.
If a tooth fractures, stop operation immediately to avoid complete drivetrain destruction. Broken fragments can lodge between other gears, cracking the housing or damaging bearings. The cost of a genuine 800106837 gear is a fraction of a full transmission overhaul.
Aftermarket gears often use cheaper steel grades (e.g., 45# carbon steel) without proper carburizing. Their teeth wear rapidly, causing increased backlash and early pitting. They may skip shot peening, resulting in poor fatigue life under shock loads.
Counterfeit gears frequently have inaccurate tooth profiles, leading to incorrect pressure angles, uneven load distribution, and accelerated wear of mating gears. The genuine 800106837 gear is manufactured to XCMG prints, ensuring correct geometry, hardness, and surface finish.
XCMG provides a 12‑month warranty against manufacturing defects. Each genuine gear is laser‑marked with the XCMG logo and part number for full traceability. Using genuine XCMG parts protects your motor grader’s resale value and operational reliability.
Inspect the 800106837 gear during every transmission oil change (every 1,500–2,000 operating hours). Use a borescope or remove the inspection cover. Check for abnormal wear patterns, pitting, or cracks. Also analyze oil samples for iron and chromium content.
Replace the gear proactively if any tooth shows initial pitting beyond 15% of the flank or if the surface hardness has degraded (field hardness test). Preventive replacement avoids unplanned downtime and secondary damage. Keep a spare 800106837 gear in your critical parts inventory.
Always use the correct lubricant (API GL‑5, SAE 85W‑140 for hot climates) and maintain proper oil levels. Contaminated oil accelerates gear wear; change filters and oil at the recommended intervals. A well‑maintained drivetrain delivers consistent grading performance.
The 800106837 Gear is stocked in XCMG regional distribution centers: Houston (North America), Rotterdam (Europe), Dubai (Middle East), and Shanghai (Asia). Standard air freight delivers within 3‑7 business days worldwide; expedited 1‑2 day shipping is available for emergency breakdowns.
Bulk orders (10+ gears) qualify for volume discounts and can be shipped via sea freight. Each gear is individually packed in a foam‑lined carton with anti‑rust VCI paper. For large fleets, consignment stock programs ensure immediate availability and reduce service delays.
Order the genuine XCMG 800106837 Gear today and secure your motor grader’s shift quality and final drive integrity. Whether you need single‑unit replacement or a full drivetrain rebuild kit, the 800106837 guarantees correct fitment, optimal tooth contact, and long‑term durability. Don’t let a worn gear risk expensive component failures.
Upgrade your preventive maintenance strategy with OEM‑grade XCMG components. The 800106837 gear reflects the highest standards in alloy selection, heat treatment, and precision grinding. Trust XCMG genuine parts to keep your GR series motor graders efficiently moving material and maintaining road grades year after year.
