72685 XCMG GR2605 motor grader bearing

Technical Parameters

• Model: 72685 (Interchange: 6208-Z / 6208ZJ)
• Type: Single-row deep groove ball bearing, single shield (Z-type)
• Material: GCr15 high-carbon chromium bearing steel
• Hardness: HRC 60–64
• Precision: P0 (ISO 492)
• Bore d: 40 mm
• Outer Diameter D: 80 mm
• Width B: 18 mm
• Basic Dynamic Load Rating Cr: 31.0 kN
• Basic Static Load Rating Cor: 18.6 kN
• Limiting Speed (grease): 5300 r/min
• Operating Temperature: -30℃～120℃
• Seal: Single non-contact metal shield
• Features: High radial capacity, shock-resistant, low noise, easy installation, cost-effective

Application Scenarios

• Transmission input/output shafts, countershaft supports
• Hydraulic pumps, motors, generators, fan housings
• Travel systems, wheel reducers, idler pulleys
• Working equipment pivots, control linkages
• Engine accessories (water pumps, A/C compressors)

  Ideal for moderate speed, heavy load, dusty, frequent start-stop environments.

Common Faults & Troubleshooting

• Abnormal noise, rough rotation: Raceway pitting, ball spalling, dry grease or contamination. Clean, replace bearing, refill EP lithium grease.
• Overheating: Excessive interference, tight clearance, improper seal or insufficient lubrication. Check fit tolerances, adjust clearance, optimize lubrication.
• Wear, loose fit: Shaft/bore wear, poor concentricity. Repair or replace shaft/housing, ensure mounting accuracy.
• Shield loss, contamination: Impact damage, vibration. Replace with fully shielded bearing, ensure secure sealing.
• Fatigue spalling, fracture: Overload, shock, material defects. Install genuine bearings, improve load distribution and damping.