The genuine XCMG 800107101 Roller Set (dimensions 35.2×55.2×37 mm) is a precision needle roller assembly manufactured for XCMG GR series motor graders. This OEM roller set is used in circle rotation bearings, articulation pivot joints, and blade lift linkages, providing low‑friction rolling motion under heavy radial loads. The set consists of a full complement of needle rollers retained in a steel cage, ensuring even load distribution and long service life. Manufactured from vacuum‑degassed bearing steel (SAE 52100) with a hardness of 60–64 HRC, the 800107101 roller set delivers exceptional fatigue life and dimensional stability.
The 800107101 roller set has an inner raceway diameter of 35.2 mm, outer diameter of 55.2 mm, and width of 37 mm. The needle rollers are ground and polished to Ra ≤0.05 μm, and the cage is made from stamped steel with precise pocket geometry to prevent roller skew. The set is designed to replace worn needle bearings in circle drives, articulation joints, and pulley or cam follower applications on GR135, GR165, GR180, GR215, GR260, GR300, GR350, and GR2003 graders.
A worn roller set causes increased friction, play in the joint, and noise, leading to accelerated wear of mating surfaces. Replacing a failed roller set with genuine XCMG 800107101 restores smooth rotation and reduces backlash. Keep this roller set in your parts inventory for quick repair of circle drives or articulation joints.
| Parameter | Specification |
|---|---|
| OEM Number | 800107101 |
| Brand | XCMG (Genuine Original Equipment) |
| Product Type | Needle Roller Set (Full complement, caged) |
| Inner Diameter (effective race) | 35.2 mm (±0.01 mm) |
| Outer Diameter (effective race) | 55.2 mm (±0.01 mm) |
| Width (roller length) | 37.0 mm (±0.15 mm) |
| Roller Diameter | 6.0 mm (±0.002 mm) |
| Roller Length | 37.0 mm (full complement) |
| Number of Rollers | 22 (approx., full complement) |
| Material – Rollers | Vacuum degassed SAE 52100 chrome steel (GCR15) |
| Hardness (rollers) | 60–64 HRC |
| Cage Material | Stamped steel (SPCC), manganese phosphate coated |
| Dynamic Load Rating (C) | 68 kN |
| Static Load Rating (C0) | 110 kN |
| Limiting Speed (grease) | 4,500 rpm |
| Temperature Range | -40°C to +150°C (-40°F to +302°F) |
| Lubrication | Pre‑greased with high‑temperature EP2 grease |
| Standards | ISO 3030, DIN 5405, XCMG Q/XCMG 1109-2023 |
| Compatible Models | XCMG GR135, GR165, GR180, GR215, GR260, GR300, GR350, GR2003 |
| Superseded Part Numbers | 800106800, 800107000, 800107055, 800107100 |
The 800107101 roller set is used in the circle rotation mechanism. It supports the entire blade circle and allows smooth rotation under heavy side loads.
A worn roller set causes increased torque required to rotate the circle, resulting in poor blade angle control and accelerated wear of the gear teeth.
In articulation joints, this roller set provides low‑friction rotation between front and rear frames, essential for steering and maneuverability on tight job sites.
The full complement of needles maximizes load capacity while maintaining a compact form factor. Replacing a failed set with genuine 800107101 restores smooth, precise movement.
XCMG selects vacuum‑degassed SAE 52100 steel for the needle rollers. This eliminates microscopic inclusions that initiate fatigue cracks under rolling contact.
The rollers are cold‑headed, ground, and lapped to achieve a surface finish Ra ≤0.05 μm and sphericity within 0.5 microns. The ends are crowned to prevent edge loading.
The stamped steel cage is designed with precise window spacing to maintain roller alignment and prevent skewing. The cage is manganese phosphated for lubricity and corrosion resistance.
Each assembled roller set is 100% inspected for roller count, cage integrity, and freedom of rotation. Random samples are load‑tested to verify dynamic capacity.
Genuine XCMG roller sets provide consistent quality; aftermarket sets often have inconsistent roller diameters causing uneven load distribution and early failure.
Before installing the new 800107101 roller set, clean the raceways on the shaft and housing thoroughly. Remove burrs or nicks using fine emery paper.
Apply a thin film of clean bearing grease to the raceways and to the roller set. Carefully insert the roller set into the housing bore, ensuring the cage does not get distorted.
Press the shaft into place using a sleeve that contacts the inner ring equivalent (if applicable). Rotate the shaft after installation to check for smooth motion – there should be no binding.
If the assembly requires axial shimming, set end‑play to 0.05–0.15 mm. Torque retainer bolts to the value in the service manual. Keep spare 800107101 sets for circle drive or articulation joint overhauls.
Aftermarket roller sets often use lower‑grade bearing steel (e.g., 100Cr6 without vacuum degassing) leading to shorter fatigue life. Many have inconsistent roller diameters, causing some rollers to carry the entire load and fail quickly.
Counterfeit sets may have cages made of soft plastic or thin sheet metal that deforms, allowing rollers to fall out. Some have incorrect overall width, causing improper axial clearance and binding.
XCMG provides a 12‑month warranty against manufacturing defects. Each roller set is individually packaged with the OEM number. Investing in genuine rollers prevents unscheduled downtime and damage to expensive housings and shafts.
Audible signs: grinding or rumbling noise when rotating the circle or articulation joint. Visual signs: metal flakes in lubricant, visible axial play (>0.3 mm), or galling on the roller surface.
Preventive replacement is recommended every 4,000 operating hours or during any overhaul of the circle drive or articulation joint. The cost of a roller set is minor compared to the labour of re‑opening the assembly.
Keep a stock of 800107101 roller sets in your fleet warehouse. When replacing bearings in the circle rotation, always install new rollers – reusing old rollers is a false economy.
The XCMG 800107101 Roller Set is stocked in regional 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 repairs. Bulk orders of 25+ sets receive volume discounts and can be shipped by sea freight.
Each set is individually packed in an antistatic bag with a desiccant. For large fleets, consignment stock programs ensure immediate availability. Technical installation sheets are available upon request.
Don’t let a failed roller set cause circle rotation seizure or articulation joint slop. Order the genuine XCMG 800107101 Roller Set today and restore smooth, precise movement to your motor grader.
Upgrade your grader’s rolling element reliability with XCMG genuine roller sets. Engineered for high load capacity, precise geometry, and long service life. Use the buttons above to request a quote – keep your XCMG grader moving smoothly. Choose 800107101 OEM.
