Robotic Arm Linear Guides

​The 15mm linear guide is a substitute for linear bearings.
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Product Details

The 15mm mini linear guide is a linear guide with a guide rail width of 15mm.

Linear guides compare linear bearings, have long service life, high load bearing capacity, high precision and stable performance

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




Plain bearings must be made from a material that is durable, low friction, low wear to the bearing and shaft, resistant to elevated temperatures, and corrosion resistant. Often the bearing is made up of at least two constituents, where one is soft and the other is hard. In general, the harder the surfaces in contact the lower the coefficient of friction and the greater the pressure required for the two to gall or to seize when lubrication fails.Bi-material bearings consist of two materials, a metal shell and a plastic bearing surface. Common combinations include a steel-backed PTFE-coated bronze and aluminum-backed Frelon.[16] Steel-backed PTFE-coated bronze bearings are rated for more load than most other bi-metal bearings and are used for rotary and oscillating motions. Aluminum-backed frelon are commonly used in corrosive environments because the Frelon is chemically inert.


A second source of motion is elasticity in the bearing itself. For example, the balls in a ball bearing are like stiff rubber, and under load deform from round to a slightly flattened shape. The race is also elastic and develops a slight dent where the ball presses on it.

The stiffness of a bearing is how the distance between the parts which are separated by the bearing varies with applied load. With rolling element bearings this is due to the strain of the ball and race. With fluid bearings it is due to how the pressure of the fluid varies with the gap (when correctly loaded, fluid bearings are typically stiffer than rolling element bearings).



For high speed and high power machines, a loss of lubricant can result in rapid bearing heating and damage due to friction. Also in dirty environments the oil can become contaminated with dust or debris that increases friction. In these applications, a fresh supply of lubricant can be continuously supplied to the bearing and all other contact surfaces, and the excess can be collected for filtration, cooling, and possibly reuse. Pressure oiling is commonly used in large and complex internal combustion engines in parts of the engine where directly splashed oil cannot reach, such as up into overhead valve assemblies.[21] High speed turbochargers also typically require a pressurized oil system to cool the bearings and keep them from burning up due to the heat from the turbine.

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