NSK axis and axis cooperation detection

Source: China Bearing Network Time: 2014-08-22

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In the process of ordinary use of NSK bearings; the cooperation gap between the bearing and the shaft must be suitable. So how to test it is appropriate?
Radial clearance can be detected by the following methods.
1. The ruler detection method is about the bearing with larger diameter; the gap is larger; it is directly detected with a narrow feeler gauge. For the bearing with smaller diameter; the gap is smaller than that of the æ§é˜Œ åŸé¥¬æµš åŸé¥¬æµš å²¢ å²¢ ç‰Ÿå˜žå®æ§åŒ¦èƒ— ç©¸ ç©¸ é’¡ é’¡ é’¡ é’¡ é’¡ é’¡.
2, the lead detection method using the lead method to detect the bearing gap is more accurate with the feeler gauge; but more troublesome. The aluminum wire used for testing should be soft; the diameter should not be too big or too. Noisy this paragraph æ¹Ž pocket 1. 5 ~2 times; in practice, soft lead wire is usually used for testing.
When testing; first open the bearing cover; use the appropriate diameter of the lead wire; cut it into 15~40 mm long section; place it on the journal and the upper and lower bearing interface; cover the bearing cover; tighten according to the regular torque Bolt; then loosen the bolt; remove the bearing cap; use a micrometer to detect the thickness of the flattened wire; find the average value of the bearing top clearance.
If the headspace is too. Slightly thin (11) å³¦å‘“å²· å«” å«” . .. If too large; then reduce the pad, scrape the ground or cast the tile from the head.
Adjustment of bearing bushing force: In order to avoid the possible transition and axial movement of the bearing bush during operation; in addition to cooperating with interference and stop parts; the bearing bush must also be pressed with the bearing cap; the measuring method is the same as the measuring head gap method ; measure the thickness of the soft lead wire; can calculate the bearing bushing force (indicated by the amount of elastic deformation after the bushing is tightened)
Usually, the bearing force of the bearing bush is between 0. 02 and 0. 04 mm. If the pressing force does not meet the specifications, it can be adjusted by increasing or decreasing the thickness of the gasket at the joint surface of the bearing and the bearing seat; the back of the tile is not allowed to be padded.
In addition to ensuring radial clearance, the plain bearings should also ensure axial clearance. When detecting axial clearances; move the shaft to a pole orientation; then measure the axis from one pole to the other with a feeler gauge or dial indicator The amount of turbulence is the axial gap.
When the clearance of the sliding bearing does not conform to the rules; adjustment should be made. The split bearing is often used to adjust the radial clearance (top clearance).
I know enough to grasp the detection method; I trust that we are using NSK bearings; we will take a lot of detours.

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