XSU Series Cross Roller Bearings XSU080218 Slewing Bearing XSU080218P4

 With the Crossed roller bearing, cylindrical rollers are arranged crosswise, with each roller perpendicular to the adjacent roller, in a 90°V groove, separated from each other by a spacer retainer.  This design allows just one bearing to receive loads in all directions including, radial, axial and moment loads. Since the Crossed Roller bearingachieves high rigidity and the precision can reach up to P4.P2,despite the minimum possible dimensions of the inner and outer rings,it is optimal for applications such as joints and swiveling units of industrial robots, swiveling tables of machining centers, rotary units of manipulators, precision rotary tables, medical equipment, measuring instruments and IC manufacturing machines

Rotation accuracy

The spacer retainer fitting among cross-arrayed rollers prevents rollers from skewing and the rotation torque from increasing due to friction between rollers. Unlike conventional types using steel sheet retainers, the crossed roller bearingdoes not cause displacement or locking of rollers and provides a stable rotation torque. Since the inner and outer rings are designed to be separable, the bearing clearance can be adjusted. In addition, highly accurate rotary motion is ensured through adjusting the bearing clearance to provide a preload.

Identification number

Main dimensious

Basic load rating(axial)

Basic load rating(radial)

Limiting speed

weight

Inner diameter

d

(mm)

outer diameter

D

(mm)

Width

B

(mm)

mounting holes

nB

Chamfer

R(min)

La

Li

Ca

Kn

Coa

Kn

Cr

Kn

Cor

Kn

r/min

Kg

XSU080168

130

205

25.4

12

1.1

190

145

66

240

42

96

227

3.3

XSU080188

150

225

25.4

16

1.1

210

164

71

275

46

110

203

3.7

XSU080218

180

255

25.4

20

1.1

240

195

77

315

49

127

175

4.3

XSU080258

220

295

25.4

24

1.5

280

235

84

375

54

151

148

5.1

XSU080318

280

355

25.4

28

1.5

340

295

93

465

59

185

120

6.3

XSU080398

360

435

25.4

36

2

420

375

106

590

68

236

96

7.8

XSU140414

344

484

56

24

2

460

368

229

520

146

250

28

XSU140544

474

614

56

32

2.5

590

498

270

680

170

330

38

XSU140644

574

714

56

36

2.5

690

598

290

800

185

395

44

XSU140744

674

814

56

40

3

790

698

315

930

200

455

52

XSU140844

744

914

56

40

3

890

798

340

1050

215

510

60

XSU140944

874

1014

56

44

3

990

898

360

1170

227

580

67

XSU141094

1024

1164

56

48

4

1140

1048

390

1360

246

670

77