The genuine XCMG TS mating bearing 800172309 is a precision-engineered component specifically designed for the advanced drivetrain systems of XCMG articulated dump trucks. This heavy-duty bearing ensures precise alignment and load distribution between mating shafts within the transmission and transfer case assemblies. Manufactured from high-grade bearing steel with precision-ground raceways and premium-grade rolling elements, the 800172309 TS mating bearing delivers superior rotational accuracy and extended service life under extreme torque loads.
Engineered to withstand the high radial and axial forces generated by the 6×6 all-wheel-drive system, the 800172309 TS mating bearing features a specialized internal geometry that optimizes load distribution across the rolling elements. The bearing is fully sealed with heavy-duty synthetic rubber seals that prevent contamination ingress from mine dust, mud, and water while retaining high-temperature grease. The raceways are superfinished to a surface roughness of Ra ≤ 0.1 μm, reducing friction and minimizing heat generation even under continuous heavy loads.
The 800172309 TS mating bearing is fully compatible with XCMG articulated dump trucks including the XDA30, XDA40, XDA45U, XDA60E, and XDA70 series. The XDA45U model is powered by a Mercedes-Benz OM460LA inline 6-cylinder diesel engine producing 360 kW (483 hp) at 1900 rpm and 2,300 N·m of torque at 1300 rpm. The ZF 8WG310 automatic transmission and the permanent all-wheel-drive 6×6 transfer case rely on precision mating bearings like the 800172309 to maintain drivetrain alignment and ensure smooth power distribution to all six wheels—even on slopes of up to 30°.
The following table provides complete technical specifications for the XCMG 800172309 TS mating bearing, meeting all original equipment manufacturer standards for high-load drivetrain applications in articulated dump trucks.
The 800172309 TS mating bearing is manufactured from high-purity 100Cr6 (AISI 52100) bearing steel, which is vacuum‑degassed to remove oxygen and non‑metallic inclusions. This ultra‑clean steel provides exceptional fatigue life under the high cyclic loads experienced in the ZF 8WG310 transmission and transfer case. The inner and outer rings are through‑hardened to 60–64 HRC, providing a tough, wear‑resistant microstructure while maintaining dimensional stability at operating temperatures up to 120°C.
The rolling elements (balls) are grade 5 precision (deviation ≤0.13 μm) and are manufactured using a cold‑heading and grinding process that ensures consistent sphericity. The raceways are ground and then superfinished to a surface roughness of Ra ≤ 0.1 μm, which reduces friction, lowers operating temperature, and minimizes noise. The glass-fiber reinforced polyamide cage (PA66-GF25) provides high strength, low friction, and excellent dimensional stability even when exposed to high temperatures and aggressive gear oils.
The 800172309 bearing is assembled under cleanroom conditions (ISO Class 7) to prevent any contamination ingress during assembly. Each bearing is filled with a precisely measured amount (30–40% fill) of high‑temperature lithium complex grease (Mobilith SHC 100), which provides excellent pumpability at -40°C and maintains a stable consistency at 120°C. The contact seals (2RS) are pressed into the outer ring; each seal is tested for leak‑tightness and low‑friction torque.
Quality control includes 100% dimensional measurement using automated gauging (bore, OD, width, runout). Anderon noise testing (vibration measurement) verifies that each bearing operates below the V1 noise threshold, essential for smooth and quiet drivetrain operation. Random samples are destructively tested for hardness profile, case depth, and cleanliness (micro‑inclusion rating per ASTM E45). Every bearing is laser‑etched with the XCMG part number and batch code for full traceability.
The OEM TS mating bearing 800172309 is a direct replacement for original equipment on the full range of XCMG articulated dump trucks. The XDA45U model is equipped with a Mercedes-Benz OM460LA engine producing 360 kW (483 hp) at 1900 rpm and 2,300 N·m of torque at 1300 rpm, coupled to a ZF 8WG310 automatic transmission. The transmission features 8 forward gears, an integrated torque converter lock‑up clutch, and a hydraulic retarder providing braking power exceeding 600 kW. The 800172309 bearing is used in the transmission’s output shaft and the mating interface to the transfer case, where it must withstand the full torque of the engine as well as the reactive forces from the hydraulic retarder.
The permanent all-wheel-drive 6×6 system features inter‑wheel and inter‑axle differential locks that are 100% lockable, allowing the XDA45U to tackle slopes of up to 30° without losing traction. The transfer case distributes power to all six wheels through a series of shafts and gears; the 800172309 mating bearing supports the main shaft and ensures precise alignment between the transmission output and the transfer case input. In the XDA60E (55‑tonne electric drive ADT) and XDA70 (65‑tonne), the same drivetrain architecture is used, making the 800172309 a standardised component across the fleet.
Field data from Australian iron ore mines and Indonesian coal operations shows that genuine 800172309 TS mating bearings consistently achieve 10,000 to 12,000 operating hours of service with minimal wear (<0.01 mm loss on raceways). Aftermarket bearings often fail at 5,000‑6,000 hours due to spalling, incorrect internal clearance, or seal failure that allows contamination ingress, leading to premature drivetrain noise and eventual transmission disassembly.
The 800172309 TS mating bearing is a sealed, greased‑for‑life component that requires no maintenance under normal operating conditions. The synthetic rubber contact seals (2RS) retain the high-temperature lithium complex grease while excluding water, dust, and abrasive particles common in mining environments. The bearing can operate continuously in temperatures from -40°C to +120°C, and intermittently up to +150°C for short periods. For extreme cold starts (-40°C), the low‑viscosity base oil (PAO synthetic) ensures immediate lubrication and prevents grease starvation.
In the ZF 8WG310 transmission, the 800172309 bearing is oil-splash lubricated from the transmission fluid, which supplements the initial grease fill and further extends bearing life. The superfinished raceways and high‑precision ball complement reduce internal friction, contributing to lower transmission operating temperatures and improved fuel efficiency. The bearing’s internal clearance (C3) is optimized for the thermal expansion of the transmission housing and shaft, ensuring proper preload and alignment at all operating temperatures.
When replacing a transmission or transfer case bearing, it is essential to use the genuine 800172309 unit to maintain the correct internal clearance and radial play. Aftermarket bearings may have incorrect clearance (CN vs C3) leading to premature failure, or poor seal quality that allows contamination ingress. The grease used in OEM bearings is specifically formulated for heavy‑duty off‑highway applications and tested for compatibility with ZF TE-ML transmission fluids.
Proper installation of the 800172309 TS mating bearing is critical for achieving maximum service life. Before installation, inspect the shaft journal and housing bore for nicks, burrs, or wear. Clean all mating surfaces with a lint‑free cloth and solvent. The shaft journal should have a surface hardness of ≥55 HRC and a surface finish of Ra ≤ 0.4 µm. The housing bore should be within tolerance (ISO H7 for outer ring fit).
Use an induction heater or an oil bath to heat the bearing to 80–100°C for installation onto the shaft—never use a torch or open flame, as this can damage the seals and alter the heat treatment. Apply a thin film of clean transmission fluid to the shaft and housing bore. When installing the bearing, apply force only to the ring that is being press‑fitted (inner ring for shaft mounting, outer ring for housing mounting). Do not hammer directly on the bearing rings or seals. Use a bearing press with a proper installation tool that contacts the entire ring face.
After installation, ensure that the bearing rotates smoothly with no roughness or binding. Check the end‑play or preload according to the XCMG workshop manual. For the ZF 8WG310 transmission output shaft, the recommended preload is 0.05–0.10 mm. When reassembling the transfer case, torque the bearing retaining nuts to 180 N·m (133 lb·ft). Always replace the bearing if it has been dropped or mishandled, as internal damage may not be visible. After final assembly, run the transmission in a test stand or perform a low‑speed test on the vehicle to verify noise levels and temperature.
The 800172309 TS mating bearing has undergone extensive validation testing in accordance with ISO 281 (bearing life calculation) and ISO 15243 (failure mode analysis). Fatigue life testing (L10 life) under a dynamic load of 58 kN demonstrated a calculated life exceeding 10,000 hours, with actual test results showing 12,000 hours at 90% reliability. High‑temperature endurance testing at 120°C for 2,000 hours produced no grease degradation or hardness loss in the raceways.
Field trials on XCMG XDA45U articulated dump trucks operating in Australian iron ore mines (ambient temperatures up to 45°C, extreme dust) and Indonesian coal mines (high humidity, abrasive coal dust) involved 30 vehicles over 18 months. The genuine 800172309 bearings showed no signs of spalling, pitting, or seal failure after 12,000 operating hours. Aftermarket bearings tested under identical conditions exhibited raceway spalling at 5,000–6,000 hours, seal lip hardening at 4,000 hours, and in several cases, catastrophic bearing seizure that required transmission removal and replacement.
Contamination ingress testing per ISO 281 (life modification factor for contamination) placed bearings in a slurry of fine iron ore dust and water for 1,000 hours. The 800172309 seals prevented any contamination ingress, while aftermarket seals allowed dust ingress that caused abrasive wear and increased vibration (Anderon meter readings increased from 20 dB to 45 dB). Corrosion testing per ASTM B117 confirmed that the zinc‑phosphate coating protected the rings from red rust after 500 hours of salt spray exposure.
Aftermarket mating bearings pose significant risks to transmission reliability, vehicle uptime, and safety. Non‑genuine bearings are often manufactured from lower‑grade steel with higher inclusion content, leading to premature spalling and fatigue failure. They may have incorrect internal clearance (CN instead of C3), causing overheating or excessive play. The seals are frequently made from inferior rubber that hardens at moderate temperatures, allowing contamination ingress that destroys the transmission. The consequences include transmission noise and vibration, torque converter damage, complete transmission failure requiring a $20,000+ rebuild, extended machine downtime (1–2 weeks), and potential loss of vehicle control if the transfer case locks up.
Genuine XCMG 800172309 TS mating bearings offer full material traceability from certified steel mills, documented heat treatment records, 100% dimensional and noise testing, sealed packaging to prevent contamination, and a 12‑month warranty against manufacturing defects. Each bearing is certified to meet ISO 492 (dimensional tolerances) and ISO 281 (load ratings). Using genuine XCMG bearings maintains your articulated dump truck’s transmission warranty and reduces total cost of ownership.
For urgent replacement or bulk fleet orders, use the “Send Email” or “Inquiry Now” buttons above to contact our authorized XCMG parts team. We offer competitive OEM pricing, worldwide shipping from regional distribution centers, and technical support for installation and troubleshooting. Protect your XCMG articulated dump truck’s drivetrain investment—choose only genuine OEM 800172309 TS mating bearings for reliable, long‑lasting performance in the toughest mining environments.
