The genuine XCMG 860119633 Angle Steel Ring is a precision‑fabricated structural component manufactured for XCMG GR series motor graders. This OEM angle steel ring is used in circle rotation support assemblies, frame reinforcement joints, and blade linkage pivot housings, providing high radial and axial strength to withstand the extreme forces generated during grading, ripping, and snow removal operations. Manufactured from hot‑rolled high‑strength low‑alloy steel (Q345B / S355JR) with a corrosion‑resistant zinc‑rich primer finish, the 860119633 angle steel ring is designed to maintain shape under heavy loads, resist fatigue cracking, and provide a stable mounting surface for bearings and bushings.
The 860119633 angle steel ring has an L‑shaped cross‑section with precision‑ground inner and outer diameters, and accurately positioned bolt holes. The ring is laser‑cut from heavy‑gauge plate, then roll‑formed to the exact curvature and heat‑treated to relieve residual stresses. All mounting holes are drilled using a CNC machining centre, ensuring perfect alignment with the mating circle gear or frame bracket. This component directly replaces bent, cracked, or corroded rings on GR135, GR165, GR180, GR215, GR260, GR300, GR350, and GR2003 motor graders.
A deformed or cracked angle steel ring will cause misalignment of the circle rotation mechanism, leading to uneven gear wear, blade drift, and accelerated failure of the slewing bearing. Replacing a damaged ring with genuine XCMG 860119633 restores structural integrity, eliminates play, and ensures smooth, accurate circle rotation. Keep this angle steel ring in your parts inventory for circle drive or frame reinforcement repairs.
| Parameter | Specification |
|---|---|
| OEM Number | 860119633 |
| Brand | XCMG (Genuine Original Equipment) |
| Product Type | Angle Steel Ring / L‑Section Structural Ring |
| Outer Diameter (OD) | 560.0 mm (±1.0 mm) |
| Inner Diameter (ID) | 480.0 mm (±1.0 mm) |
| Ring Thickness (web) | 12.0 mm (±0.5 mm) |
| Flange Height (vertical leg) | 45.0 mm (±0.8 mm) |
| Material | Hot‑rolled high‑strength low‑alloy steel (Q345B / S355JR) |
| Yield Strength | ≥345 MPa (50 ksi) |
| Tensile Strength | 470–630 MPa |
| Surface Finish | Zinc‑rich primer + epoxy topcoat (720h salt spray) |
| Bolt Hole Pattern (Number of holes) | 16 holes, Ø18 mm on 520 mm PCD (±0.2 mm) |
| Flatness (overall) | ≤0.8 mm |
| Concentricity (ID to OD) | ≤0.5 mm |
| Operating Temperature Range | -40°C to +80°C (-40°F to +176°F) |
| Standards Compliance | ISO 9001, XCMG Q/XCMG 1148-2023 |
| Compatible Models | XCMG GR135, GR165, GR180, GR215, GR260, GR300, GR350, GR2003 |
| Superseded Part Numbers | 860119500, 860119600, 860119632 |
The 860119633 angle steel ring is used as the upper or lower mounting ring inside the circle rotation gearbox. It provides a rigid L‑shaped seat for the slewing bearing or needle roller ring, maintaining the geometry of the circle drive under heavy side loads.
In the front frame, similar rings reinforce the articulation joint housing, preventing distortion of the pin bosses under oscillating loads during steering. A deformed ring will cause the articulation pin to bind, leading to erratic steering effort and premature bushing wear.
The L‑section design combines a horizontal flange (for bolt‑down mounting) with a vertical leg that serves as a wear surface or bearing race carrier. This reduces the number of separate components, simplifying assembly and reducing weight.
Replacing a cracked ring with genuine XCMG 860119633 restores factory geometry, eliminates movement between mating parts, and increases the service life of the entire circle or articulation assembly.
XCMG selects Q345B low‑alloy high‑strength steel for its excellent weldability, toughness, and fatigue resistance. The material has a yield strength 50% higher than standard structural steel, allowing a thinner, lighter ring without sacrificing load capacity.
The ring is laser‑cut from 12 mm thick plate to achieve the rough L‑shape, then roll‑formed on a 4‑roll bending machine to the exact radius. The seam is welded using a submerged‑arc process, then ground flush and stress‑relieved in a furnace at 620°C for 2 hours.
After heat treatment, the ring is finish‑machined on a vertical boring mill, facing the top and bottom surfaces and turning the inner and outer diameters to final tolerance. The 16 bolt holes are drilled using a CNC gundrill, with countersinking for M16 socket head cap screws.
Each ring is 100% checked for flatness, concentricity, and hole pattern accuracy using a CMM. The zinc‑rich primer and epoxy topcoat provide superior corrosion protection for salty and wet environments.
To replace a damaged angle steel ring, disassemble the circle rotation gearbox or articulation joint. Clean the mounting surfaces of old gasket material and corrosion.
Position the new 860119633 ring onto the mating flange, aligning the bolt holes. Insert new grade 10.9 bolts with thread locker and tighten in a crossing pattern to the torque specified (typically 180 Nm for M16 bolts).
Using a dial gauge, check the ring face runout against the housing reference surface. Maximum allowable runout is 0.3 mm. If exceeded, adjust by shimming the low points or re‑machining the housing.
After assembly, rotate the circle or articulation joint through full travel to verify smooth operation without binding. Keep spare 860119633 rings in your workshop for circle drive or frame repairs.
Aftermarket angle steel rings are often made from common low‑carbon steel (A36) with insufficient yield strength, causing them to deform under the grader’s working loads. Many are cut with a gas torch, leaving heat‑affected zones that crack in service.
Counterfeit rings may have inaccurate bolt hole positions, requiring re‑drilling – this weakens the ring and creates stress risers. Some are not stress‑relieved after welding, causing them to warp during the first few work cycles.
Genuine XCMG rings are heat‑treated, CNC‑machined, and 100% inspected for flatness and hole pattern accuracy. XCMG provides a 12‑month warranty against manufacturing defects. Using OEM rings ensures proper alignment of the circle drive and extends the life of the slewing bearing and drive pinion.
Symptoms: uneven gap between the circle gear and housing, difficulty rotating the circle (binding), visible cracks near bolt holes, and excessive play detected when prying the ring with a crowbar.
Preventive replacement is recommended every 5,000 operating hours or during any major circle drive overhaul. The cost of a ring is negligible compared to the damage caused by a failed slewing bearing or gearbox housing.
Keep a stock of 860119633 rings in your fleet warehouse. When rebuilding a circle drive, always replace the angle steel ring – old rings may have micro‑cracks from fatigue that are invisible to the naked eye. Proactive replacement ensures smooth, backlash‑free circle rotation.
The XCMG 860119633 Angle Steel Ring 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 circle drive repairs.
Bulk orders of 5+ rings receive volume discounts and can be shipped by sea freight. Each ring is wrapped in VCI paper and foam‑lined crated to prevent damage.
For large fleets, consignment stock programs ensure immediate availability. Installation drawings and torque specifications are available upon request.
Don’t let a cracked angle steel ring ruin your grader’s circle rotation accuracy. Order the genuine XCMG 860119633 Angle Steel Ring today and restore rigid, stable support for your circle drive and frame connections.
Upgrade your grader’s structural integrity with XCMG genuine angle steel rings. Engineered for high strength, dimensional precision, and long life. Use the buttons above to request a quote or email our parts specialists. Keep your XCMG grader rotating smoothly – choose 860119633 OEM ring.
