| Part Number | RA15008 Bearing |
| Bearing Type | Crossed Roller Bearings |
| Interchange | CRBS 1508 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 | 150 |
| Mass(kg) | 0.19 |
| Bore Dia (d) | 150 |
| Outer Dia (D) | 166 |
| Width (B) | 8 |
The outer ring of the Standard Type Crossed Roller Bearings is made of two split pieces, which are bolted together to prevent separation during transportation or mounting, enabling easy handling. These bearings are widely used in the rotating parts of industrial robots, machine tools, medical equipment, etc., which require compactness, high rigidity and high rotational accuracy. In addition, bearings made of stainless steel and those with inner and outer rings provided with mounting holes are also available on request.
● High Rotation Accuracy of RA 15008 Cross Roller Bearing/ CRBS 1508 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.
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| Major dimensions | Shoulder dimensions | Basic load rating | Mass |
| Shaft diameter |
| (radial) |
| TKW | Model No. | Inner diameter | Outer diameter | Roller pitch circle diameter |
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| d | D | dp | Width | Greasing hole |
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| C | C0 |
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| 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 |
RA 15008 Crossed Roller Bearings are compact bearings with their rollers alternately crossed at right angles to each other between inner and outer rings. The orthogonal array of rollers allows the bearing to handle complex loads simultaneously from any direction, which makes assembly possible without needing to worry about load direction.
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)
Suffix of Crossed Roller Bearings
P6: Grade 6 rotation accuracy
PE6: Grade 6 rotation accuracy+Grade 6 dimensional accuracy
P5: Grade 5 rotation accuracy
PE5: Grade 5 rotation accuracy+Grade 5 dimensional accuracy
P4: Grade 4 rotation accuracy
PE4: Grade 4 rotation accuracy+Grade 4 dimensional accuracy
P2: Grade 2 rotation accuracy
PE2: Grade 2 rotation accuracy+Grade 2 dimensional accuracy
USP: USP Grade rotation accuracy
Radial clearance symbol
CC0: Negative clearance(preload)
C0: Positive clearance
C1: Positive clearance (greater than C0)
Seal symbol
No symbol: without a seal
UU: With seal attached on both sides
U: With seal attached on one side
Symbol
No symbol: Models RB,RE And RA
C: Model RA-C
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