When purchasing goods, cost performance is often one of the important factors for consumers to consider. How to make the best choice between mixed ceramic ball bearings, all-ceramic bearings and all-steel bearings.

Test conditions: This comparative test adopts deep groove ball bearings whose structure and parameters are completely consistent, representing three kinds of materials: mixed ceramic ball bearings, all-ceramic bearings and all-steel bearings.

Performance comparison:

Fatigue spalling form: all ceramic bearings, mixed ceramic ball bearings and all steel bearings have the same form of rolling contact fatigue spalling.

Maximum contact stress: Although the maximum contact stress generated by ceramic bearings is higher than that of all-steel bearings under the same load, their rolling contact fatigue life is comparable to or even longer than that of all-steel bearings.

Static friction moment: The average static friction moment of hybrid ceramic ball bearings is significantly lower than that of all-steel bearings of the same type.

Acceleration vibration: The average value of acceleration vibration of hybrid ceramic ball bearings is equivalent to that of all-steel bearings of the same type, but slightly higher than the latter.

Velocity vibration: All-ceramic bearings perform well in terms of overall velocity vibration, while hybrid ceramic ball bearings show the greatest vibration values.

Comprehensive analysis:

Static friction torque and friction power consumption: ceramic ball bearings perform better than steel ball bearings on these two indicators.

Acceleration vibration: The acceleration vibration value of ceramic ball bearings is similar to that of steel ball bearings.

Fatigue life: hybrid ceramic ball bearings have obvious advantages in this respect.

Conclusion:

Under the premise of considering the vibration performance to meet the requirements, from the point of view of life and economy, hybrid ceramic ball bearings are a choice worthy of priority.