70533 XCMG GR2605 motor grader bearing

Technical Parameters

• Model：70533
• Type：Tapered Roller Bearing (Assembly/Set)
• Brand：DANA-GRAZIANO
• Material：High-carbon Chromium Bearing Steel (GCr15)
• Outer Diameter：Approx. 150 mm
• Precision Class：P0 (Normal) / P6 (High), compliant with construction machinery standards
• Load Rating：Heavy-duty, designed for combined axial & radial loads in heavy machinery
• Operating Temperature：-40℃ ～ +120℃
• Cage：Steel sheet stamped or brass cage
• Seal Type：Open type (used with housing oil seal)
• Features：Impact-resistant, wear-resistant, stable clearance, high rotational precision

Application Scenarios

• Supporting input, output, and intermediate shafts to withstand heavy loads and shocks
• Controlling axial shaft movement to ensure gear meshing accuracy
• Adapting to harsh conditions: continuous vibration, dust contamination, oil immersion
• Matching mainstream transmission assemblies from DANA, ZF, etc.

Common Faults & Troubleshooting

• Abnormal Noise：Caused by pitting, spalling, roller damage, lack of lubrication, or contamination. Replace the 70533 bearing assembly, thoroughly clean the housing, and renew the oil.
• Excessive Axial Clearance：Due to inner/outer ring wear or roller fatigue collapse. Install a new bearing, torque the lock nut to specification, and readjust the axial clearance.
• Overheating：Resulting from insufficient lubrication, excessive preload, misalignment, or seal failure. Check lubrication, reinstall for proper alignment, and replace damaged oil seals.
• Seizure：Caused by cage fracture, roller jamming, or foreign object intrusion. Disassemble immediately, replace 70533 bearing, clean housing, and inspect journal wear.