YRT Rotary bearing

YRT Rotary Bearing

YRT bearing consists of thrust/radial housing washer,a thrust/radial shaft,two Axial needle roller and cage assemblies and a group of radial cylindrical roller.Housing washer and shaft washer have equally sspaced fitting bolt.This kind of bearings have high axial load and radial load,and high tilting rigidity and high precision.This bearing can be used to the machine tool and other high precision machinery of the rotary table or sub-set,and also can be used for chuck,measuring instruments and test equipment and rotary table configuration.This bearing requires higher quality or the parts to match it.You must control screw tightening torque when install it.

Bearing features:
1.   High precision: precision at P4, P2.
2.   High rigidity: YRT series bearings are with preload.
3.   High load capacity: bearings can support axial load, radial load and tilting  load.
4.   High speed: YRTS series bearings can be applied in the high speed working condition.

Application:
YRT series bearings are widely used high precision rotary table, vertical grinding machine, dividing head, hobbing machine, gear generator axis etc.

The parameter as follows:

Bearing Type

Boundary Dimensions

Fixing Holes

d

D

H

H1

C

D1

J

J1

Inner Ring

Outer Ring

unit :m

d1

d2

a

Quantity

d3

Quantity

mm

mm

YRT50

50

126

30

20

10

105

63

116

5.6

9

4.2

10

5.6

12

YRT80

80

146

35

23.35

12

130

92

138

5.6

10

4.2

10

4.6

12

YRT100

100

185

38

25

12

160

112

170

5.6

10

5.4

16

5.6

15

YRT120

120

210

40

26

12

184

135

195

7

11

6.2

22

7

21

YRT150

150

240

40

26

12

214

165

225

7

11

6.2

34

7

33

YRT180

180

280

43

29

15

244

194

260

7

11

6.2

46

7

45

YRT200

200

300

45

30

15

274

215

285

7

11

6.2

46

7

45

YRT260

260

385

55

36.5

18

345

280

365

9.3

15

8.2

34

9.3

33

YRT325

325

450

60

40

20

415

342

430

9.3

15

8.2

34

9.3

33

YRT395

395

525

65

42.5

20

486

415

505

9.3

15

8.2

46

9.3

45

YRT460

460

600

70

46

22

560

482

580

10

15

8.2

46

10

45

YRT580

580

750

90

60

30

700

610

720

11.4

18

11

46

11.4

42

YRT650

650

870

122

78

34

800

680

830

14

20

13

46

14

42

YRT850

850

1095

124

80.5

37

1018

890

1055

18.5

26

17

57

18.5

54

YRT950

950

1200

132

86

40

1130

990

1160

18.5

26

17

57

18.5

54

YRT1030

1030

1300

145

92.5

40

1215

1075

1255

18.5

26

17

66

18.5

66

YRT1200

1200

1490

164

108

52

1410

1240

1445

18.5

26

17

66

18.5

66



 

Bearing Type

Boundary Dimensions

Radial Runout And Axial Runout(µm)

d

D

H

H1

Nominal Dimension

High

Low

Nominal Dimension

High

Low

Nominal Dimension

Nominal Dimension

Deviation

Unit:mm

YRT50

50

0

-0.008

126

0

-0.011

30

20

±0.125

2

YRT80

80

0

-0.009

146

0

-0.011

35

23.35

±0.15

3

YRT100

100

0

-0.01

185

0

-0.015

38

25

±0.175

3

YRT120

120

0

-0.01

210

0

-0.015

40

26

±0.175

3

YRT150

150

0

-0.013

240

0

-0.015

40

26

±0.175

3

YRT180

180

0

-0.013

280

0

-0.018

43

29

±0.175

4

YRT200

200

0

-0.015

300

0

-0.018

45

30

±0.175

4

YRT260

260

0

-0.018

385

0

-0.02

55

36.5

±0.2

6

YRT325

325

0

-0.023

450

0

-0.023

60

40

±0.2

6

YRT395

395

0

-0.023

525

0

-0.028

65

42.5

±0.2

6

YRT460

460

0

-0.023

600

0

-0.028

70

46

±0.225

6

YRT580

580

0

-0.025

750

0

-0.035

90

60

±0.25

10

YRT650

650

0

-0.038

870

0

-0.05

122

78

±0.25

10

YRT850

850

0

-0.05

1095

0

-0.063

124

80.5

±0.3

12

YRT950

950

0

-0.05

1200

0

-0.063

132

86

±0.3

12

YRT1030

1030

0

-0.072

1300

0

-0.08

145

92.5

±0.4

15

YRT1200

1200

0

-0.075

1490

0

-0.085

164

108

±0.3

15


 

Bearing Type

Number of Retaining Screws

Extraction

Thread Hole

Number of pitches X angle of pitches

1)

Screw

Tightening Torque

Basic Load Rating

Limiting Speed

Bearing Frictional Torque3)

Axial

Radial

Dynamic Load

Static Load

Dynamic Load

Static Load

MA2)

Ca

Coa

Cr

Cor

Grease

G

Quantity

Quantity×t

Nm

KN

r/min

Nm

YRT50

2

12×30°

8.5

38

158

28.5

49.5

440

2.5

YRT80

2

12×30°

8.5

56

255

42.5

100

530

3

YRT100

2

M5

3

18×20°

8.5

76.5

415

47.5

120

430

3

YRT120

2

M8

3

24×15°

14

102

540

52

143

340

7

YRT150

2

M8

3

36×10°

14

112

630

56

170

320

10

YRT180

2

M8

3

48×7.5°

14

118

710

69.5

200

280

12

YRT200

2

M8

3

48×7.5°

14

120

765

81.5

220

260

14

YRT260

2

M12

3

36×10°

34

160

1060

93

290

200

20

YRT325

2

M12

3

36×10°

34

275

1930

120

345

170

40

YRT395

2

M12

3

48×7.5°

34

300

2280

186

655

140

55

YRT460

2

M12

3

48×7.5°

34

355

2800

200

765

120

70

YRT580

2

M12

6

48×7.5°

68

490

4250

228

965

80

140

YRT650

2

M12

6

48×7.5°

116

1040

8000

490

1800

65

200

YRT850

3

M16

6

60×6°

284

1000

8650

455

1730

50

300

YRT950

3

M16

6

60×6°

284

1290

11400

530

2040

40

600

YRT1030

6

M16

6

72×5°

284

1380

12000

620

2650

35

800

YRT1200

6

M16

6

72×5°

300

1435

12850

745

2800

25

1000

                                       

YRT Bearing Fit Shaft Tolerance

Bearing Type

Fixing Journal

(mm)

Circular Degree

( °)

Verticality

 (⊥)

Parallelism

(?)

Surface Roughness

( R )

Nominal Dimension

t1(µm)

t3(µm)

t4(µm)

Ra(µm)

t4(µm)

Ra(µm)

YRT50

50

0

-0.011

3

3

3

0.4

YRT80

80

0

-0.013

3

3

3

0.4

YRT100

100

0

-0.015

4

4

4

0.4

YRT120

120

0

-0.015

4

4

4

0.4

YRT150

150

0

-0.018

5

5

5

0.8

YRT180

180

0

-0.018

5

5

5

0.8

YRT200

200

0

-0.02

7

7

7

0.8

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