HOME

 BEARINGS ROLLER & WHEELS

AMOL FACTORIES

QUALITY CONTROL

CUSTOMER SERVICE

AMOL MACHINES

CONTACT US

　

Manufacturing process quality control

How do we control quality ?

Every single shipment of WBW bearings are checked in the following procedures:

1. Check of material ::: material metallurgical certificate ::: Optical metallurgical analysis report

　

2. Hardness testing ::: hardness range verification and hardness uniformity check

3. Basic dimensional tolerance check, clearance check

4. Noise check if ball bearing / trb, when necessary / Vibration testing ::: Noise (db) testing / 100% sorting

5. Life testing, when ordered by customer

7. Check of marking, packing details

8. Shipping documents and container loading condition check

9. Other inspection requested by our customers

　

　
Review of bearing design
Review of manufacturing plan
Raw material quality control
Spare part incoming quality control
Heat treatment quality control
Turning and grinding tolerance control
Assembly quality control
Washing and pre-packing quality control
Bearing spare part sorting and grouping
Finish bearing inspections and sorting
Bearing life span verification
Non-manufacturing quality control
Pre-load quality inspection and control
After sales quality feedback
Close loop quality control
　
　
　
　
　
　
　
　
　
　
　
　
　
　
　
　
　
　
　
　
　
　
　
　
　
　
　
　
　
　
　
　
　
　
　
　
　
　
　
　
　
　
　
　
　
　
　
　
　
　
　
　
　
　
　
　
　
　
　
　
　
　
　
　
　
　
　
　
　
　
　
　
　
　
　
　
　
　
　
　
　
　
　
　
　
　
　
　
　 　

Copyright reserved from 2020.1.1 to 2022.1.1