The genuine XCMG 800107086 Needle Roller Bearing (type K35×50,06×30) is a high‑precision rolling element bearing manufactured for XCMG GR series motor graders. This OEM needle roller bearing is used in transmission countershaft supports, final drive pinion mounts, and articulation pivot joints, where high radial load capacity and a compact cross‑section are essential. Manufactured from vacuum‑degassed chrome steel (SAE 52100) with precision‑ground needle rollers retained in a pressed steel cage, the 800107086 bearing delivers exceptional fatigue life and dimensional stability under heavy shock loads and continuous high‑speed oscillation.
The 800107086 bearing has nominal dimensions: 35 mm inner diameter, 50 mm outer diameter, and 30 mm width (K35×50,06×30). The “K” designation indicates a drawn‑cup needle roller bearing with a full complement of rollers (or caged version). The needle rollers are crowned to avoid edge loading, and the outer race is induction‑hardened to 60–64 HRC for exceptional wear resistance. The bearing is pre‑lubricated with high‑performance EP2 grease and features integrated lubrication grooves.
This needle roller bearing is a direct replacement for original bearings in GR135, GR165, GR180, GR215, GR260, GR300, GR350, and GR2003 graders. A worn or spalled bearing will cause increased vibration, noise, and eventual seizure of the shaft or housing. Replacing a failed bearing with genuine XCMG 800107086 restores original radial clearance, reduces friction, and protects expensive mating components. Keep this bearing in your parts inventory for rapid transmission or final drive repairs.
| Parameter | Specification |
|---|---|
| OEM Number | 800107086 |
| Brand | XCMG (Genuine Original Equipment) |
| Product Type | Drawn‑Cup Needle Roller Bearing – K series |
| Inner Diameter (d) | 35.00 mm (±0.01 mm) |
| Outer Diameter (D) | 50.00 mm (±0.01 mm) |
| Width (B) | 30.00 mm (±0.15 mm) |
| Needle Roller Diameter | 3.0 mm (±0.0015 mm) |
| Needle Roller Length | 30.0 mm (full length) |
| Number of Rollers | 24 (full complement design) |
| Material – Rollers & Shell | Vacuum degassed SAE 52100 chrome steel (GCR15) |
| Hardness (rollers & raceways) | 60–64 HRC |
| Cage Material | Pressed steel (SPCC), manganese phosphate coated |
| Dynamic Load Rating (C) | 42 kN |
| Static Load Rating (C0) | 68 kN |
| Limiting Speed (oil/grease) | 6,000 rpm / 4,500 rpm |
| Operating Temperature Range | -40°C to +140°C (-40°F to +284°F) |
| Lubrication | Pre‑greased with lithium EP2 (grease grooves integrated) |
| Standards | ISO 3030, DIN 5405, XCMG Q/XCMG 1110-2023 |
| Compatible Models | XCMG GR135, GR165, GR180, GR215, GR260, GR300, GR350, GR2003 |
| Superseded Part Numbers | 800107000, 800107055, 800107085 |
The 800107086 needle roller bearing is installed on rotating shafts inside the grader’s transmission countershaft and final drive pinion supports. It provides low‑friction, high‑radial‑capacity rolling contact, essential for handling heavy torque loads during ripping and grading.
A worn needle roller bearing will cause shaft deflection, gear misalignment, and increased noise. The full complement of rollers maximizes load capacity while maintaining a slim profile.
In articulation joints, this bearing allows the front frame to pivot smoothly while supporting high side loads. Regular greasing through the integrated lubrication groove extends bearing life.
Replacing a damaged bearing with genuine XCMG 800107086 restores original radial clearance, reduces friction, and prevents catastrophic drivetrain failure.
XCMG selects vacuum‑degassed SAE 52100 chrome steel to guarantee the absence of oxide inclusions that could initiate fatigue cracks under rolling contact stress.
The drawn outer shell is made from thick‑walled tube, then case‑carburized and hardened to 60–64 HRC. The needle rollers are cold‑headed, ground, and lapped to a surface finish Ra ≤0.05 µm. Roller ends are crowned to prevent edge loading.
The steel cage is stamped and heat‑treated, then manganese phosphated to retain lubricant and resist corrosion. Each bearing is pre‑greased with high‑temperature EP2 grease and 100% inspected for inner/outer diameter, radial clearance, and roller torque.
Random samples are tested on a tribometer under simulated articulation cycles. Genuine XCMG bearings outlast aftermarket parts by a factor of 3–5 times, ensuring long‑term reliability in harsh environments.
Before installing the 800107086 bearing, clean the housing bore thoroughly and inspect for burrs or scoring. The bore diameter should be within M7 tolerance for a proper interference fit.
Apply a thin film of anti‑seize grease to the outer diameter of the bearing. Using a hydraulic press or a sleeve, drive the bearing squarely into the bore until it seats against the shoulder. Never hammer directly on the bearing.
After installation, use a plug gauge to verify the inner diameter. The mating shaft should have a running clearance of 0.02–0.06 mm. If the fit is too tight, the bearing may require light honing – but genuine XCMG bearings are supplied at final dimension.
Lubricate the bearing with EP2 grease before inserting the shaft. Install dust seals if required. Keep spare 800107086 bearings in your shop for transmission or articulation joint overhauls.
Aftermarket needle roller bearings frequently use low‑grade steel with insufficient hardness, causing rapid indentation of the raceway and roller flattening within months of service.
Many counterfeit bearings have inconsistent roller diameters, leading to uneven load distribution, spalling, and eventual seizure in the pivot joint. Some lack proper caging, allowing rollers to skew and lock up.
The outer diameter of aftermarket bearings is often oversized or undersized, causing either a loose fit (housing damage) or an interference fit that cracks the housing. Genuine XCMG bearings are precision‑ground to exact DIN/ISO tolerances.
XCMG provides a 12‑month warranty against manufacturing defects. Each genuine bearing is laser‑etched with the OEM number and batch code. Using OEM bearings prevents sloppy articulation, reduces maintenance costs, and extends the life of expensive pins and housings.
Audible indicators: knocking or clunking when articulating the grader or during transmission gear shifts. Visual signs: a visible gap between the shaft and bearing inner ring (more than 0.3 mm radial play), rust‑coloured grease indicating fine metal debris, or scoring on the shaft.
Preventive replacement is recommended every 3,500 operating hours or during any major overhaul of the transmission, final drive, or articulation joint. The bearing is a sacrificial component – it is designed to wear instead of the shaft or housing.
If radial play can be felt by hand when prying the joint, the bearing has exceeded its service limit. Waiting too long will result in an oval‑shaped housing, requiring expensive re‑boring or replacement.
Keep a stock of 800107086 bearings in your fleet inventory. When replacing a shaft or pin, always inspect the bearing and replace it if any play is detected. Proactive bearing replacement eliminates loose joints and extends the life of the entire drivetrain assembly.
The XCMG 800107086 Needle Roller Bearing is stocked in regional distribution centers: Houston (USA), Rotterdam (Netherlands), Dubai (UAE), and Shanghai (China).
Standard air freight delivers within 2–5 business days worldwide. Expedited courier (DHL/FedEx) provides 1–2 day shipping for urgent transmission repairs. Bulk orders of 20+ bearings receive volume discounts and can be shipped by sea freight.
Each bearing is individually packed in a corrosion‑inhibiting bag and foam‑lined box to prevent damage. For large fleets, consignment stock programs ensure immediate availability. Technical installation datasheets and clearance charts are available upon request.
Don’t let a worn needle roller bearing compromise your grader’s drivetrain performance. Order the genuine XCMG 800107086 Needle Roller Bearing K35×50,06×30 today and restore tight, smooth operation in your transmission, final drive, or articulation joint.
Upgrade your grader’s rolling element reliability with XCMG genuine needle roller bearings. Engineered for high load capacity, low friction, and long service life. Use the buttons above to request a quote or email our parts specialists. Keep your XCMG grader transmitting power with confidence – choose 800107086 OEM bearing.
