Linear Guide Blocks

​The Ball type linear guide rail divides into High assembly and Low assembly. It has low manufacturing cost, interchangeable and wide application.
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Product Details

CHTR linear guides strictly control the manufacturing precision, keep the lubricated smoothness 、high rigidity and load, and interchange with other brand ,the same way to suit and installation.

CHTR linear guide with optimized lubrication circuit design, DF (45°-45°) combination of circular groove, four-row ball circulation design.

Linear guides are mainly used in mechanical structures with high precision requirements, such as grinding machines, lathes, woodworking machines, handling machines, transport devices, industrial automation machines, semiconductor machinery, packaging machines, etc.

TRH-A型TRH-AL型


Model

M

W

L

B

C

S

W1

W2

M1

F

TRH15A

24

47

61.8

38

30

M5

15

16

15

60

TRH20A

30

63

77.4

53

40

M6

20

21.5

18

60

TRH20AL

30

63

93.4

53

40

M6

20

21.5

18

60

TRH25A

36

70

83.5

57

45

M8

23

23.5

22

60

TRH25AL

36

70

102.6

57

45

M8

23

23.5

22

60

TRH30A

42

90

100.5

72

52

M10

28

31

26

80

TRH30AL

42

90

123

72

52

M10

28

31

26

80

TRH35A

48

100

113.9

82

62

M10

34

33

29

80

TRH35AL

48

100

139.2

82

62

M10

34

33

29

80

TRH45A

60

120

138.5

100

80

M12

45

37.5

38

105

TRH45AL

60

120

169.5

100

80

M12

45

37.5

38

105



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.

Main article: Babbitt (metal)

Babbitt is usually used in integral bearings. It is coated over the bore, usually to a thickness of 1 to 100 thou (0.025 to 2.540 mm), depending on the diameter. Babbitt bearings are designed to not damage the journal during direct contact and to collect any contaminants in the lubrication.[11]

Split bi-material bushings: a metal exterior with an inner plastic coating

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.

By far, the most common bearing is the plain bearing, a bearing which uses surfaces in rubbing contact, often with a lubricant such as oil or graphite. A plain bearing may or may not be a discrete device. It may be nothing more than the bearing surface of a hole with a shaft passing through it, or of a planar surface that bearsanother (in these cases, not a discrete device); or it may be a layer of bearing metal either fused to the substrate (semi-discrete) or in the form of a separable sleeve (discrete). With suitable lubrication, plain bearings often give entirely acceptable accuracy, life, and friction at minimal cost. Therefore, they are very widely used.

However, there are many applications where a more suitable bearing can improve efficiency, accuracy, service intervals, reliability, speed of operation, size, weight, and costs of purchasing and operating machinery.

Thus, there are many types of bearings, with varying shape, material, lubrication, principle of operation, and so on.


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