CNC machining of mechanical parts – bearing technical requirements

In the CNC machining process of mechanical parts, the machining of bearings is essential. Here we will introduce the technical requirements for machining of bearings:

1.The outer ring of the bearing, the semi-circular hole of the open bearing seat and the bearing cover must not be stuck.

2.After the bearing outer ring is assembled, it should be in even contact with the end face of the bearing cap at the positioning end.

3.The outer ring of the bearing should be in good contact with the semi-circular hole of the open bearing seat and the bearing cover. When checking with coloring, it should be 120° symmetrical to the center line with the bearing seat and 90° symmetrical to the center line with the bearing cover. even contact. When checking with a feeler gauge within the above range, a 0.03mm feeler gauge shall not be inserted into 1/3 of the width of the outer ring.

4.After the rolling bearing is installed, it should be flexible and stable to rotate by hand.


5.The assembly of rolling bearings is allowed to use oil heating for hot charging, and the temperature of the oil should not exceed 100 °C.

6.The joint surfaces of the upper and lower bearing shells should be closely attached, and the 0.05mm feeler gauge should not be used for inspection.

7.The bearing body and the bearing seat of the spherical bearing should be in even contact, and the contact should not be less than 70%.

8.When fixing the bearing bush with the locating pin, drill the hinge and distribute the pin under the condition that the mouth surface and end surface of the bush are flush with the opening and closing surface and end surface of the relevant bearing hole. The pins must not be loosened after being driven in.

9.When the surface of the alloy bearing lining is yellow, it is not allowed to use, and there is no nucleation phenomenon within the specified contact angle. The nucleation area outside the contact angle shall not be greater than 10% of the total area of ​​the non-contact area.

If you want to know more about CNC machining of precision machinery, you can contact us, the precision machining factory in Shenzhen

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