Bearing box device and precautions

Source: China Bearing Network Time: 2013-01-30

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First, the bearing box device:
1. Standard type: Several methods of using the snap ring and the fixed plate device bearing box. The bearing with the set screw device will cause the bearing shell to be deformed; it should be prevented as much as possible.
2. Flange type: When installing flange type linear bearing; the precision of the inner hole of the bearing box cooperated with it must be accurate.
3, adjustable type (small opening type): the opening on the bearing and the bearing box is straight; you can get a uniform preload in the circumferential direction.
4, large opening type: if used in cooperation with the appropriate bearing housing; large opening bearings can also be used for gap adjustment; even able to add light preload.
Second, the device should pay attention to:
1. When the linear bearing is installed in the bearing seat; auxiliary work should be used; prevent the end face or seal ring from being directly tapped; the bearing should be evenly introduced; use the buffer plate; by gently tapping and loading.
2. Pass the optical axis into the linear bearing; the center line of the shaft and the bearing must be in a straight line. If the shaft is twisted, the ball may fall; or the cage may be deformed; and the linear bearing may be damaged.
3. The applied load should be evenly distributed over the entire bearing; especially when receiving the load when éœŽ; two or more bearings should be used. The linear bearing does not accept the rotating load; otherwise it can cause accidents.

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Mini Steel Tape Measure

1. Features of tape measure

Gift rulers are used for advertising and promotion. They are divided into Steel tape (steel tape) and leather tape (PVC plastic fiber tape). They are usually cute and compact. Tape measures are also called measuring tools. Eighty-five percent of the world's tape measures are exported from China.

2, the characteristics of the tape measure

(1) The tape measure is too deformed and will not fail

Why didn't it fail? The spring in the tape measure is very long, and its range from completely relaxed to fully tightened is very large. The entire stroke of the tape measure includes it, and there is a margin at both ends, so the tape measure will not fail.

(2) Pull one meter long and pull two meters long, there is no difference in tension

The spring of the tape measure is very thin, and the amount of deformation when it is tightened is also small, so the reaction force is very small, and the force change is not felt when the rule is pulled.

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