12 Mm Linear Guides

The TRN12C/TRN12H is miniature linear guide. It is include linear guide blocks and rails.
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Product Details

The TRN12C/TRN12H is a linear motion component with a wide range of applications and high precision.

The TRN12C/TRN12H has a small appearance, stable structure, simple installation and high positioning accuracy.

The TRN12C/TRN12H mini linear guideways are mainly used in medical equipment, electronic equipment and linear motors.


Model

H

H1

N

W1

W2

W3

L1

L2

L3

L4

Mxd

H3

Weight

TRN7C

8

1.5

5

17

12

2.5

23.5

8

14.3

-

M2x2.5

1.5

10g

TRN7H

8

1.5

5

17

12

2.5

31

12

21.6

-

M2x2.5

1.5

14g

TRN9C

10

2

5.5

20

15

2.5

30

10

20.8

-

M3x3

2.2

19g

TRN9H

10

2

5.5

20

15

2.5

40.5

15

30.9

-

M3x3

2.2

28g

TRN12C

13

3

7.5

27

20

3.5

34

15

21.6

-

M3x3.5

2.7

35g

TRN12H

13

3

7.5

27

20

3.5

44

20

32

-

M3x3.5

2.7

52g

TRN15C

16

4

8.5

32

25

3.5

42

20

27.8

-

M3x4

3.1

64g

TRN15H

16

4

8.5

32

25

3.5

57

25

42.7

62

M3x4

3.1

95g



Data unit is mm

工厂图





Integral plain bearings are built into the object of use as a hole prepared in the bearing surface. Industrial integral bearings are usually made from cast iron or babbittand a hardened steel shaft is used in the bearing.

Integral bearings are not as common because bushings are easier to accommodate and can be replaced if necessary. Depending on the material, an integral bearing may be less expensive but it cannot be replaced. If an integral bearing wears out, the item may be replaced or reworked to accept a bushing. Integral bearings were very common in 19th-century machinery, but became progressively less common as interchangeable manufacture became popular.

For example, a common integral plain bearing is the hinge, which is both a thrust bearing and a journal bearing.



Some applications apply bearing loads from varying directions and accept only limited play or "slop" as the applied load changes. One source of motion is gaps or "play" in the bearing. For example, a 10 mm shaft in a 12 mm hole has 2 mm play.

Allowable play varies greatly depending on the use. As example, a wheelbarrow wheel supports radial and axial loads. Axial loads may be hundreds of newtons force left or right, and it is typically acceptable for the wheel to wobble by as much as 10 mm under the varying load. In contrast, a lathe may position a cutting tool to ±0.002 mm using a ball lead screw held by rotating bearings. The bearings support axial loads of thousands of newtons in either direction, and must hold the ball lead screw to ±0.002 mm across that range of loads


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