How to use the radial ball bearing?

Source: China Bearing Network Time: 2014-06-29

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The concept of radial ball bearings is a universal depiction; it can accept different loads in high-speed motion. This type of rolling bearing consists of a complete set of fine balls and cages as well as inner and outer rings. There is a standard radial ball bearing in the middle. The deep groove layout is capable of accepting radial loads from a free direction and a small axial load. The radial ball bearing with the highest load capacity is mainly subjected to radial load. This type of tumbling bearing has various sizes to choose from. Different sealing equipment can protect the internal components of the rolling bearing; and can retain lubricating grease.
The use of large-scale radial ball bearings is widely used in general industry; automotive occupation; agriculture; chemical industry and household appliances occupation.
How to determine the normal spherical ball bearing; the inner and outer ring raceways should have no shedding and severe wear scars; and a circular arc with bright light, all the balls should be round; the surface is free of mottle, crack and Shedding, insisting that the frame is not slack, not broken, not worn. When using one hand inner ring; the other hand agilely pushes the outer ring to rotate; the demand rotates smoothly; only the ball is heard on the raceway.
The radial ball bearing with normal skill condition; the inner and outer ring raceways should have no falling off and severe wear marks; and a circular arc groove with bright light, all the balls should adhere to the round shape; the surface is free from mottle, crack and fall off, Adhere to the frame is not slack, not broken, not worn. When using a hand-held inner ring; the other hand agilely pushes the outer ring to rotate; the demand rotates smoothly; only the fine movement of the ball rolling on the raceway is heard; no oscillation , should be gradually slowed down when it stops; there is no backward appearance after stopping.
Normal centripetal ball bearing; the gap between the inner and outer rings and the roll body is 0. 005-0. 010mm; when the inner and outer rings are swayed in the radial direction; the gap should be felt. The used bearing; Hold the inner ring and shake it a few times in the axial direction; when the outer ring and the ball have significant movement; clarify that the cooperation gap exceeds 0.03mm; it should not be used continuously.
The NSK bearing with normal skill condition; the inner and outer ring raceways should have no shedding and severe wear scars; and a circular arc with bright light, all the balls should adhere to the circle; the surface is free from mottle, crack and shedding. Adhere to the frame is not slack, not broken, not worn. When using a hand-held inner ring; the other hand agilely pushes the outer ring to rotate; the demand rotates smoothly; only the fine movement of the ball rolling on the raceway is heard; Oscillation, it should be gradually decelerated when it stops; there is no backward appearance after stopping; normal centripetal ball bearing; the gap between the inner and outer rings and the rolling body is 0. 005-0. 010mm; when the inner and outer rings are swayed in the radial direction Should feel the gapless. NSK bearing used; can hold the inner ring by hand to shake a few times in the axial direction; when the outer ring and the ball have obvious movement; clarify that the cooperation gap exceeds 0. 03mm; should not continue use.
How to install a device method is that two outer rings are opposite with their wide end faces; called "outer ring wide end face relative device"; or "back to back device"; or "DB device"; or O-shaped device.
Another device method is that the two outer rings are opposite with their narrow end faces; they are called "outer ring narrow end face opposing device"; or "face-to-face device"; or "DF device"; or "X-shaped device".
The back-to-back method is different; here are three different situations.
The first condition; if the cone tips R of the two outer races coincide; the axial and radial thermal expansion is balanced; this allows the pre-adjusted play to remain unchanged.
The second situation is the opposite; at this moment, such as the bearing distance. è›Ÿè°•å¤¤é¾…é›·éƒ½é¥¨ é¥¨ æ·¼ æ¦é±¿ ç—ª ç—ª ç—ª èšºè›˜æ…æˆŽåµ¯èšºè›˜ èšºè›˜æ…æˆŽåµ¯èšºè›˜ èšºè›˜æ…æˆŽåµ¯èšºè›˜ èšºè›˜æ…æˆŽåµ¯èšºè›˜ èšºè›˜æ…æˆŽåµ¯èšºè›˜ èšºè›˜æ…æˆŽåµ¯èšºè›˜ èœ— èœ— èœ— èœ— èœ— èœ— èœ— èœ— èœ— èœ—The third condition of the ã•é‡ ( (14) ç¾ åº– ; ;; when the bearing distance is large; the outer race cone tip can not intersect; then the radial expansion is less than the axial expansion on the bearing clearance. It will increase; therefore, there is no clearance for the bearing during installation; in some cases, even a small amount of pre-interference can be selected.

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