72686 XCMG GR2605 motor grader bearing

Technical Parameters

• Model: 72686
• Type: Single-row deep groove ball bearing (heavy-duty)
• Material: High-carbon chromium bearing steel (GCr15)
• Structure: Inner ring, outer ring, steel balls, nylon/steel cage
• Seal Type: Double metal shields (ZZ) or rubber seals (2RS)
• Precision Rating: P0 (normal) / P6 (precision)
• Load Rating: Heavy-duty radial & axial combined load
• Operating Temperature: -40℃ ～ 130℃
• Features: Low friction torque, high-speed adaptability, vibration resistance, impact resistance, lifelong lubrication or regreasable

Application Scenarios

• Transmission input shaft, output shaft, intermediate shaft support
• Differential axle shaft, planetary gear, main reducer bearing positions
• Hydraulic pump, hydraulic motor, fan motor shaft ends
• Drive axle hub, wheel reducer, flange assembly support

  Provides high-precision support for rotating parts, ensures coaxiality, and adapts to construction site environments with dust, mud, heavy load and continuous vibration.

Common Faults & Troubleshooting

• Abnormal noise/excessive noise: Internal oil starvation, raceway pitting, ball wear. Replace 72686 bearing, clean housing and refill special grease.
• Overheating/seizure: Lubrication failure, tight assembly, foreign matter intrusion. Replace bearing, check seals and control installation preload.
• Excessive radial/axial clearance: Inner/outer ring wear, cage fracture. Directly replace bearing and check shaft journal and housing bore tolerances.
• Oil leakage/lubricant loss: Seal lip damage. Prioritize replacement with sealed 72686 bearing and improve sealing & lubrication system.