Assist Home Appliance Motor Factory in Overcoming Bearing Abnormal Noise Issues

  The secret to a motor's high-efficiency operation often lies in the details. Small bearings, seemingly insignificant, 

directly impact the operation of washing machines. How can we reduce the motor defect rate from 8% to 0.3% and 

lower vibration levels by 40% for customers?                                                                                                                            

  As a bearing manufacturer with over 20 years of specialization in motor bearings, Kent Bearings assisted a home appliance 

motor producer in resolving a persistent bearing noise issue in washing machine motors. During mass production, approximately 

8% of the client’s motors exhibited bearing noise, with vibration tests revealing 200Hz frequency vibrations at the bearing location. 

  Disassembly identified cage fractures and uneven ball wear. Through collaborative analysis, we traced the root cause to improper 

radial clearance selection in the original bearings, which failed to absorb axial shocks during motor start-stop cycles. Additionally, 

the rotor’s dynamic balance fell short of the G2.5 grade standard, exacerbating vibration transmission.

  Leveraging technical expertise, Kenda Bearings delivered a tailored solution: replacing metal cages with nylon counterparts to 

utilize their superior elasticity and self-lubricating properties for shock absorption and friction reduction. We optimized radial clearance 

specifications and refined rotor dynamic balancing processes. 

  These improvements reduced the motor defect rate from 8% to 0.3%, decreased vibration by 40%, and eliminated noise entirely.

This collaboration not only enhanced the client’s product quality and market competitiveness but also demonstrated Kenda Bearings’ 

proficiency in bearing selection and technical support. Moving forward, we remain committed to solving complex bearing challenges with 

professional, efficient solutions.

  For similar bearing issues, contact us at +86-19957451956 to address your requirements.