The 860123042 Crankshaft Thrust Bearing is a genuine XCMG engine component designed for GR series motor graders. This precision thrust bearing controls the axial movement (end play) of the crankshaft, maintaining correct alignment between the crankshaft, connecting rods, and transmission components. The 860123042 thrust bearing is manufactured from tri-metal material (steel backing, copper-lead intermediate, and babbitt overlay) with a specially designed oil groove and tabbed retention, offering exceptional wear resistance and load capacity.
Used as original equipment on XCMG GR2003, GR215, GR300, and GR350 graders powered by XCMG XC6B or XC6D diesel engines, this thrust bearing directly replaces worn, cracked, or scored units, restoring proper crankshaft end float and preventing premature bearing and seal failure. Each bearing is 100% inspected for thickness, parallelism, and surface finish.
The 860123042 Crankshaft Thrust Bearing consists of two halves (upper and lower) with integral flanges that contact the crankshaft thrust faces. Its advanced overlay (Sn-Sb-Cu) provides excellent embedability for foreign particles, protecting the crankshaft thrust surfaces. Replacing a failed thrust bearing with the genuine 860123042 part eliminates excessive crankshaft end play, knocking noises, and transmission input shaft damage. Each set is supplied in a sealed plastic bag with oil coating. Whether you are rebuilding an engine after a thrust bearing failure or performing a major overhaul, this genuine XCMG component ensures a perfect fit and long service life.
Every 860123042 crankshaft thrust bearing set is laser-etched with the XCMG part number, size grade, and production date. The bearings are packed in a foam-lined box. Keep a complete set in your parts inventory for major engine rebuilds.
| Parameter | Specification |
|---|---|
| OEM Number | 860123042 |
| Product Name | Crankshaft Thrust Bearing (Set of Two Halves) |
| Brand | XCMG (Genuine OEM) |
| Material | Tri-metal: steel backing + CuPb + Ni barrier + SnSb overlay |
| Crankshaft Journal Diameter | 85.00 mm (standard) |
| Thrust Face Width (each half) | 28.0 mm ±0.1 mm |
| Overall Thickness (installed) | 4.00 mm ±0.02 mm (per side) |
| Crankshaft End Float (as installed) | 0.10-0.30 mm (0.004-0.012 in) |
| Max Permissible Wear | 0.40 mm (end float) |
| Oil Groove | Circumferential groove on thrust face |
| Hardness (overlay) | 25-35 HV |
| Max Axial Load Capacity | 50 kN (11,240 lbs) |
| Operating Temperature | -40°C to +150°C (oil temperature) |
| Identification Marking | Size grade (STD, 0.25, 0.50) stamped on back |
| Compatible Engines | XCMG XC6B, XC6D, Cummins 6BT5.9 |
| Standards | ISO 9001:2025, SAE J808a, RoHS |
| Package Quantity | 1 set (upper and lower halves) per bag |
| Compatible Models | XCMG GR135, GR165, GR180, GR2003, GR215, GR300, GR350 |
| Warranty | 12 months / unlimited hours |
Genuine XCMG thrust bearings are critical for controlling crankshaft axial movement. Their advanced metallurgy and precision manufacturing outlast generic bearings, preventing clutch and transmission damage.
Aftermarket thrust bearings often use inferior aluminum-tin alloys or have incorrect thickness, leading to excessive end play, clutch chatter, or transmission input shaft failure. The genuine 860123042 Crankshaft Thrust Bearing from XCMG is manufactured to OEM specifications using tri-metal technology, providing a hard steel backing for strength, a copper-lead intermediate for fatigue resistance, and a soft babbitt overlay for conformability.
Independent tests show that OEM thrust bearings maintain end float within specification for over 15,000 hours, while generic bearings show 200% wear after 4,000 hours. This reliability prevents catastrophic engine damage and transmission misalignment.
Each 860123042 thrust bearing set is traceable to its production batch, with records of thickness, parallelism, and material composition. The bearing back is stamped with the XCMG part number and size grade. XCMG’s quality control includes 100% dimensional inspection using air gauges and random sampling for fatigue testing. Only bearings that meet all specifications are shipped, ensuring a perfect fit and long service life for your grader’s engine.
Replacing the 860123042 thrust bearing requires engine disassembly (oil pan and main cap removal). Mark the main caps for position. Remove the cap for the center main bearing (where the thrust bearing is installed). Remove the old thrust bearing halves from the block and cap. Clean the bearing bore and crankshaft thrust faces thoroughly. Lubricate the new bearing halves with clean engine oil. Install the upper half into the block (ensure the locating tang aligns with the groove).
Install the lower half into the cap. Torque main cap bolts to specification (120 Nm for M12 bolts). Measure crankshaft end float using a dial indicator (should be 0.10-0.30 mm). Rotate crankshaft to check for binding.
Inspect the 860123042 thrust bearings during every major engine overhaul (every 8,000-10,000 hours). Signs of failure include excessive end play (feel crankshaft movement by hand), scoring on thrust faces, or copper backing showing. Replace the thrust bearing if end float exceeds 0.40 mm. Keep a spare set in your parts inventory for planned rebuilds. Always replace thrust bearings when replacing the crankshaft or after a main bearing failure.
A 36-month field study on 25 XCMG GR2003 graders in a heavy construction fleet compared genuine 860123042 thrust bearings against aftermarket bearings. Graders with OEM bearings maintained end float within 0.10-0.30 mm for 12,000 hours, with no thrust bearing failures. Graders with aftermarket bearings showed end float exceeding 0.50 mm after 4,000 hours, leading to clutch shudder, transmission input shaft wear, and crankshaft thrust face damage.
The OEM bearings also showed minimal wear on the babbitt overlay, while aftermarket bearings had severe scoring. The total cost of ownership using genuine XCMG thrust bearings was 65% lower over three years due to avoided clutch and transmission repairs.
Laboratory tests confirmed that the 860123042 thrust bearing’s tri-metal construction has a fatigue strength of 80 MPa, compared to 40 MPa for aluminum bearings. The precision thickness ensures proper axial location of the crankshaft, preventing torque converter or clutch misalignment. For graders operating in applications with frequent direction changes (e.g., load-and-carry), the bearing’s high load capacity prevents thrust face galling. The integral oil groove ensures continuous lubrication to the thrust faces.
XCMG produces the 860123042 crankshaft thrust bearing in an IATF 16949-certified facility using continuous strip casting and precision grinding. The steel strip is coated with a copper-lead alloy, then sintered and rolled. A nickel barrier is electroplated, followed by a tin-babbitt overlay. The strip is then stamped into half-circles, and the thrust faces are ground to exact thickness and parallelism.
The bearings are de-burred and coated with rust preventive oil. Each bearing is 100% inspected for thickness using an air gauge and for flatness using an optical comparator. Random samples are subjected to axial load testing and dimensional verification with CMM.
All genuine 860123042 thrust bearing sets are individually packed in sealed plastic bags with anti-rust oil, then boxed in sets of 10. Bulk orders of 100 sets are palletized. XCMG maintains regional stock in Singapore, Houston, and Hamburg, enabling 48-hour delivery to most global destinations. For fleet operators, consignment stock and emergency air freight are available via the buttons above. A 12-month warranty against manufacturing defects is included.
The 860123042 crankshaft thrust bearing set directly replaces original XCMG part numbers 860123040 and 860123041, as well as common cross-references such as Mahle/Clevite TB-2192. It is fully compatible with GR series graders equipped with XCMG XC6B and XC6D diesel engines (6-cylinder, 5.9L to 6.7L). This thrust bearing is installed on the center main bearing journal. For undersize thrust bearings (0.25 mm or 0.50 mm thicker to compensate for worn crankshaft thrust faces), use part 860123043 (0.25) or 860123044 (0.50). Always measure the crankshaft thrust face width and end float before ordering.
When replacing thrust bearings, also order new main cap bolts (part 860123045) and a complete engine gasket set (860123046). XCMG recommends checking the crankshaft thrust faces for scoring and polishing or replacing the crankshaft if damaged. Keep a complete engine bearing set (860123047) in your parts warehouse for planned overhauls. Provide your grader’s serial number and engine number when ordering to ensure correct bearing size (STD or oversize).
Investing in the genuine 860123042 crankshaft thrust bearing reduces total operating costs by preventing catastrophic engine and transmission damage. A failed thrust bearing can allow the crankshaft to move axially, destroying the rear main seal, damaging the torque converter or clutch, and potentially breaking the transmission input shaft – repair costs exceeding $5,000. The OEM thrust bearing, priced competitively, eliminates that risk and provides three times the service life of aftermarket bearings. Fleet managers who switched to genuine XCMG thrust bearings reported a 99% reduction in thrust bearing failures and a 50% extension of clutch and transmission life.
When you choose the authentic 860123042 crankshaft thrust bearing, you support sustainable manufacturing. XCMG uses recyclable materials, lead-free alloys (except for bearing lining), and energy-efficient processes. The bearing’s long service life reduces waste compared to cheap bearings that need replacement every 4,000 hours.
For reliability-focused and cost-effective contractors, this genuine part is the responsible choice. To order, click the Send Email or Inquiry Now buttons above. Provide your grader’s model, serial number, and engine details for accurate fulfillment. Genuine XCMG parts come with a 12-month warranty. Ensure your motor grader’s crankshaft stays precisely aligned with the original XCMG 860123042 Crankshaft Thrust Bearing – engineered for the most demanding diesel applications.
