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THK Standard RA 13008 Crossed Roller Bearings

RA13008 Bearing
With the Cross-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.

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Availability:
  • RA 13008
  • EASIER / TKW
  • CRBS 1308,CRBS 1308V
  • Best Factory Price

RA Type THK Cross roller bearings

With the Cross-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.
Part Number RA13008 Bearing
Bearing Type Crossed Roller Bearings
Interchange CRBS 1308 Bearings
Construction Single Row,Combined Radial; Thrust; and Moment
Seal Type Open
ABEC Rating ABEC-5, ABEC-7, ABEC-9
Ring Material Steel
Roller Material Steel
Shaft dia. mm 130
Mass(kg) 0.18
Bore Dia (d) 130
Outer Dia (D) 146
Width (B) 8


Since the Cross-Roller Ring achieves high rigidity 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.


● High Rotation Accuracy of RA 13008 Cross Roller Bearing/ CRBS 1308 Bearings


● Easy Handling

The inner and outer rings, which are separable, are secured to the Cross-Roller Ring body after the rollers and spacer retainers are installed. This procedure prevents the rings from separating from each other. Thus, it is easy to handle the rings when installing the Cross-Roller Ring.





Major dimensions Shoulder dimensions Basic load rating Mass
Shaft diameter
(radial)
TKW Model No. Inner diameter Outer diameter Roller pitch circle diameter









d D dp Width Greasing hole


C C0





B B1 a b rmin ds Dh kN kN kg
50 RA 5008 50 66 57 8 2 0.8 0.5 53.5 60.5 5.1 7.19 0.08
60 RA 6008 60 76 67 8 2 0.8 0.5 63.5 70.5 5.68 8.68 0.09
70 RA 7008 70 86 77 8 2 0.8 0.5 73.5 80.5 5.98 9.8 0.1
80 RA 8008 80 96 87 8 2 0.8 0.5 83.5 90.5 6.37 11.3 0.11
90 RA 9008 90 106 97 8 2 0.8 0.5 93.5 100.5 6.76 12.4 0.12
100 RA 10008 100 116 107 8 2 0.8 0.5 103.5 110.5 7.15 13.9 0.14
110 RA 11008 110 126 117 8 2 0.8 0.5 113.5 120.5 7.45 15 0.15
120 RA 12008 120 136 127 8 2 0.8 0.5 123.5 130.5 7.84 16.5 0.17
130 RA 13008 130 146 137 8 2 0.8 0.5 133.5 140.5 7.94 17.6 0.18
140 RA 14008 140 156 147 8 2 0.8 0.5 143.5 150.5 8.33 19.1 0.19
150 RA 15008 150 166 157 8 2 0.8 0.5 153.5 160.5 8.82 20.6 0.2
160 RA 16013 160 186 172 13 2.5 1.6 0.8 165 179 23.3 44.9 0.59
170 RA 17013 170 196 182 13 2.5 1.6 0.8 175 189 23.5 46.5 0.64
180 RA 18013 180 206 192 13 2.5 1.6 0.8 185 199 24.5 49.8 0.68
190 RA 19013 190 216 202 13 2.5 1.6 0.8 195 209 24.9 51.5 0.69
200 RA 20013 200 226 212 13 2.5 1.6 0.8 205 219 25.8 54.7 0.71


Type of Crossed Roller Bearings

1.Split outer ring type

2.Split inner ring type

3.High rigidity type

4.Split outer ring with mounting holes

5.High rigidity with mounting holes


When you purchase the crossed roller bearings, please confirm the designation first.

1.  Model RU (Integrated Inner/Outer Ring Type) 

2. Model RB (Separable Outer Ring Type for Inner Ring Rotation)

3. Model RE (Separable Inner Ring Type for Outer Ring Rotation)

4. USP-Grade Series of Models RB/RE

5. Model RA (Separable Outer Ring Type for Inner Ring Rotation)

6. Model RA-C (Single-Split Type)


cross roller bearings


Features of Crossed Roller Bearings RA 13008/CRBS 1308

1. Excellent rotation accuracy

2. Simplified operation and installation

3. Withstand large axial and radial loads

4. Significantly save installation space

5. High speed capability

6. Reduce shaft length and processing costs, thermal expansion causes limited changes in geometric dimensions

7. Adopt nylon divider, low moment of inertia, low starting torque, easy to control angle indexing

8. Optimize the pre-tightening force, the rigidity is large, and the guiding roller has high precision

9. Carburized steel provides excellent impact resistance and surface abrasion resistance

10. Simple but well lubricated



E-mail: sales@xrbearing.com, brandbearings@gmail.com

Skype:brandbearings

Whatsapp: 0086-13280450757

www.electricallyinsulatedbearings.com