Self-aligning precision for extreme articulation. The genuine XCMG 800515288 Spherical Bearing GEG90ES is a heavy-duty, maintenance-free spherical plain bearing designed for XCMG motor grader articulation joints, steering linkages, and hydraulic cylinder mounts. OEM number 800515288 identifies the GEG90ES type – a steel-on-steel, single-acting spherical bearing with chromium-plated inner ring and hardened outer ring. This bearing accommodates misalignment up to ±15°, reduces edge loading, and provides long service life under high radial and alternating axial loads.
Engineered for XCMG GR135, GR165, GR200, GR215, GR300, GR350, and GR2003 graders, the 800515288 spherical bearing is used in critical locations such as the articulation pivot, steering cylinder ends, circle drive linkage, and blade tilt mechanism. By choosing the authentic XCMG GEG90ES bearing, you ensure correct spherical clearance, optimized sliding surface finish, and superior wear resistance. Each bearing undergoes 100% dimensional inspection, radial play testing, and PTFE-free steel-on-steel design for high-load applications.
Ideal for heavy grading, mining, and forestry, this spherical bearing features a hard chrome-plated inner ring (hardness > 800 HV) sliding against a phosphated outer ring, providing excellent wear and corrosion resistance. The bearing is grease-lubricated via a central annular groove and lubrication holes, ensuring consistent film formation under oscillating motion. Its open design allows easy regreasing, extending maintenance intervals.
Upgrade your grader’s articulation reliability with the XCMG 800515288 Spherical Bearing GEG90ES – a component that eliminates sticking, reduces play, and withstands shock loads up to 280 kN. Global contractors trust XCMG genuine spherical bearings for unmatched self-alignment capacity and durability in dusty, muddy, and corrosive environments.
| Parameter | Value / Detail |
|---|---|
| OEM Number | 800515288 / GEG90ES |
| Part Name | Spherical Plain Bearing (Steel-on-Steel, single-acting) |
| Brand | XCMG Original Equipment |
| Bore Diameter (d) | 90.00 mm ±0.020 mm (chromium-plated) |
| Outer Diameter (D) | 130.00 mm ±0.025 mm (phosphated) |
| Width Inner (B) | 60.00 mm ±0.20 mm |
| Width Outer (C) | 50.00 mm ±0.30 mm |
| Spherical Diameter (dk) | 120.00 mm ±0.10 mm |
| Tilt Angle (approx.) | ±15° (self-aligning) |
| Dynamic Load Rating (Cr) | 610 kN |
| Static Load Rating (Cor) | 1220 kN |
| Radial Clearance (μm) | 60–120 μm (C3 group, optimized for oscillation) |
| Lubrication | Grease via annular groove + two holes (lithium EP2 recommended) |
| Operating Temperature | ‑30°C to +120°C (standard grease) / up to +200°C with high-temp grease |
| Weight | 2.75 kg ± 3% |
| Applicable Models | XCMG GR135, GR165, GR200, GR215, GR300, GR350, GR2003 |
| Packaging | VCI anti-rust film + sealed poly bag + heavy-duty export carton |
| Certification | ISO 9001:2015, ISO 12240-1 (spherical plain bearings), SGS |
The inner ring of the XCMG 800515288 GEG90ES bearing is made from case-hardened bearing steel (100Cr6) with a hard chrome layer of 15–25 µm thickness, achieving surface hardness of 750–850 HV. This provides exceptional wear resistance and a low friction coefficient (0.12–0.18 when lubricated). The outer ring is made from through-hardened steel with a phosphate conversion coating for corrosion protection and initial run-in support.
The spherical sliding surface is precision-ground and superfinished (Ra ≤0.2µm) to ensure smooth oscillation and reduce edge loading. Unlike PTFE-lined bearings, the steel-on-steel design can tolerate higher loads and shock peaks without deformation.
The GEG90ES design allows a static misalignment of up to 15° in any direction, accommodating frame flex and assembly tolerances. Dynamic oscillation tests (5 million cycles at ±10°, 200 kN radial load) show no measurable wear or increase in radial clearance beyond the initial C3 range. The bearing’s fatigue life, calculated per ISO 12240-1, exceeds 20,000 hours under typical grader articulation duty cycles.
The optimized internal geometry ensures that the contact ellipse remains within the raceway limits even at maximum tilt, preventing stress concentration and premature spalling.
The spherical bearing 800515288 is a direct replacement for the articulation joint pivot, steering cylinder rod ends, circle drive linkages, and blade tilt mechanism of XCMG GR series graders. Its self-aligning property compensates for misalignment caused by frame twist, reducing binding and uneven wear. Compatible models include GR135, GR165, GR200, GR215, GR300, GR350, and GR2003.
Fleet owners report that using genuine XCMG GEG90ES bearings eliminates premature failure due to corrosion or inadequate hardness, especially in salt-spray environments (coastal and winter road maintenance). The bearing’s regreasable design allows field maintenance without disassembly.
Press the spherical bearing into the housing using a sleeve that contacts only the outer ring. Never apply force through the inner ring or the ball. For press-fit housings, the recommended interference is 0.02–0.05 mm. Lubricate the bearing immediately after installation with a lithium-based EP2 grease until fresh grease appears at the seals. For articulation applications, regrease every 250 operating hours.
Inspect the bearing for radial play by rocking the joint: replace if play exceeds 0.4 mm or if the bearing feels rough. Always replace both bearing and housing if wear is detected. Store bearings in a dry, covered area; do not remove the protective coating until ready to install.
Every XCMG 800515288 spherical bearing is produced in an ISO 9001:2015 certified facility with full material traceability. Each bearing undergoes 100% dimensional inspection (bore, OD, width, spherical diameter) and 100% radial clearance measurement. A random sample from each lot is subjected to dynamic life testing and salt spray corrosion testing (minimum 144 hours, no red rust). XCMG provides a 12-month warranty against manufacturing defects.
Counterfeit spherical bearings often use unhardened inner rings, shallow chrome plating, or incorrect clearance, leading to rapid wear and seizure. Protect your grader’s articulation joints by sourcing only verified 800515288 bearings from authorized XCMG distributors.
The XCMG 800515288 spherical bearing is stocked in regional distribution centers across Asia, Europe, the Middle East, Africa, and the Americas. Each bearing is individually wrapped in VCI-coated film, sealed in a poly bag, and packed in a heavy-duty carton. Bulk orders (20+ pieces) qualify for volume discounts and reduced freight rates. Standard lead time is 3–7 business days for stocked locations.
For emergency repairs, express air freight is available. Always reference OEM number 800515288 when ordering. For fleet articulation rebuilds, XCMG offers bearing and pin kits.
Comparative oscillation tests (1 million cycles at 200 kN radial load, ±12°) show that the genuine XCMG 800515288 bearing exhibits a radial clearance increase of only 0.05 mm, while generic steel-on-steel bearings increase by 0.28 mm and PTFE-lined bearings fail due to liner extrusion. The hard chrome layer on the genuine bearing remains intact, while generic chrome peels after 300,000 cycles.
Salt spray testing (ASTM B117) shows that the genuine bearing withstands 200 hours without red rust, while generic bearings corrode heavily within 72 hours. Total cost of ownership using genuine XCMG bearings is 60% lower over a 10,000-hour grader life due to reduced downtime and extended pin life.
Each shipment of XCMG 800515288 includes a material certificate (EN 10204 3.1), dimensional inspection report, and lubrication guidelines. Digital CAD models, installation torque specs, and housing bore tolerance recommendations are available via the XCMG partner portal. For complex articulation rebuilds, XCMG field support can be arranged through the inquiry button.
Maintain your grader’s steering precision and articulation smoothness with genuine XCMG 800515288 spherical bearings – engineered for the harshest grading conditions worldwide.
XCMG genuine 800515288 Spherical Bearing GEG90ES – OEM quality, self-aligning reliability. For technical datasheets or volume pricing, use the Inquiry Now or Send Email button.
