Cross Roller Bearing

RB Series Crossed Roller Bearing

RB series crossed roller bearings are also called crossed cylindrical roller bearings. The rolling elements are generally cylindrical rollers or tapered rollers arranged in a cross on a single raceway, and cages or spacers separate the rollers. , Because the rollers are arranged in a cross, one set of cross roller rings can bear loads in all directions. Compared with the traditional model, the rigidity is increased by 3 to 4 times. At the same time, because the outer ring of the RB series cross roller bearing has a two-part structure, the bearing clearance can be adjusted. Even if preload is applied, high-precision rotational movement can be obtained.

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RB Series Crossed Roller Bearing

RB series crossed roller bearings are the basic models of crossed roller bearings. It has a detachable outer ring and a united inner ring. The outer ring is divided into two pieces, and the inner circle is an integral structure, which is most suitable for occasions where the rotation accuracy of the inner circle is required. Therefore, it is widely used for internal ring precision rotation. RB type is the primary type of crossed roller bearing.

Open. The outer ring of this type of bearing is divided into two parts in the axial direction, and the inner circle is a whole; the cylindrical rollers are arranged on two 90° V-shaped raceways at an angle of 90° and 1:1, and a spacer separates the cylindrical rollers. This kind of bearing has a compact structure, and a set of bearings can bear radial, axial, and overturning hurdles simultaneously while ensuring structural rigidity, which significantly simplifies the design of the shafting structure; it can be pre-installed to facilitate installation and maintenance further.

At the same time, this type of bearing has the characteristics of high precision, high load, high rigidity, etc. It is suitable for robot rotating parts, manipulator joint parts, CNC indexing tables, medical equipment, measuring instruments, etc.

RB Series Crossed Roller Bearing Parameters:

 shaft diameter  Model number  Main Dimensions Shoulder
height
Basic load

rating

(radial)

Weight
 Inner ring d (mm)  Outer ring

D (mm)

 

DP

Width B (mm) Greasing hole  r(min) ds(mm) Dh (mm) C KN Co  KN Kg
30 RB3010 30 55 41.5 10 1 0.6 37 47 7.35 8.36 0.12
35 RB3510 35 60 46.5 10 1 0.6 41 51.5 7.64 9.12 0.13
40 RB4010 40 65 51.5 10 1 0.6 47.5 57.5 8.33 10.6 0.16
45 RB4510 45 70 56.5 10 1 0.6 51 61.5 8.62 11.3 0.17
50 RB5013 50 80 64 13 1.5 0.6 57.4 72 16.7 20.9 0.27
60 RB6013 60 90 74 13 1.5 0.6 68 82 18 24.3 0.3
70 RB7013 70 100 84 13 1.5 1 78 92 19.4 27.7 0.35
80 RB8016 80 120 98 16 1.5 1 91 111 30.1 42.1 0.7
90 RB9016 90 130 108 16 1.5 1.5 98 118 31.4 45.3 0.75
100 RB10016 100 140 119.3 16 1.5 1.5 109 129 31.7 48.6 0.83
RB10020 150 123 20 1.5 1.5 113 133 33.1 50.9 1.45
110 RB11012 110 135 121.8 12 1.5 1 117 127 12.5 24.1 0.4
RB11015 145 126.5 15 1.5 1 122 136 23.7 41.5 0.75
RB11020 160 133 20 1.5 1.5 120 143 34 54 1.56
120 RB12016 120 150 134.2 16 1.5 1.5 127 141 24.2 43.2 0.72
RB12025 180 148.7 25 2 1 133 164 66.9 100 2.62
130 RB13015 130 160 144.5 15 1.5 2 137 152 25 46.7 0.72
RB13025 190 158 25 2 1 143 174 69.5 107 2.82
140 RB14016 140 175 154.8 16 1.5 2 147 162 25.9 50.1 1
RB14025 200 168 25 2 1.5 154 185 74.8 121 2.96
150 RB15013 150 180 164 13 1.5 2 157 172 27 53.5 0.68
RB15025 210 178 25 2 1 164 194 76.8 128 3.16
RB15030 230 188 30 3 2 173 211 100 156 5.3
160 RB16025 160 220 188.6 25 2 2 173 204 81.7 135 3.14
170 RB17020 170 220 191 20 1.5 2 184 198 29 62.1 2.11
180 RB18025 180 240 210 25 2 2 195 225 84 143 3.44
190 RB19025 190 240 211.9 25 1.5 2 202 222 41.7 82.9 2.99
200 RB20025 200 260 230 25 2 2.5 215 245 84.2 157 4
RB20030 280 240 30 3 2.5 221 258 114 200 6.7
RB20035 295 247.7 35 3 2.5 225 270 151 252 9.6
220 RB22025 220 280 250.1 25 2 2.5 235 265 92.3 171 4.1
240 RB24025 240 300 269 25 2 3 256 281 68.3 145 4.5
250 RB25025 250 310 277.5 25 2 3 265 290 69.3 150 5
RB25030 330 287.5 30 3 3 269 306 126 244 8.1
RB25040 355 300.7 40 3.5 3 275 326 195 348 14.8
300 RB30025 300 360 328 25 2 3 315 340 76.3 178 5.9
RB30035 395 345 35 3 3 322 368 183 367 13.4
RB30040 405 351.6 40 3.5 3 326 377 212 409 17.2
350 RB35020 350 400 373.4 20 1.5 3.5 363 383 54.1 143 3.9
400 RB40035 400 480 440.3 35 3 3.5 422 459 156 370 14.5
RB40040 510 453.4 40 3.5 1.5 428 479 241 531 23.5
450 RB45025 450 500 474 25 1.5 1.5 464 484 61.7 182 6.6
500 RB50025 500 550 524.2 25 1.5 1.5 514 534 65.5 201 7.3
RB50040 600 548.8 40 3 3.5 526 572 239 607 26
RB50050 625 561.6 50 3.5 3.5 536 587 267 653 41.7
600 RB60040 600 700 650 40 3 4 627 673 264 721 29
700 RB70045 700 815 753.5 45 3 4 731 777 281 836 46
800 RB80070 800 950 868.1 70 4 5 836 900 468 1330 105
900 RB90070 900 1050 969 70 4 5 937 1001 494 1490 120
1000 RB1000110 1000 1250 1114 110 6 6 1057 1171 1220 3220 360
1250 RB1250110 1250 1500 1365.8 110 6 6 1308 1423 1350 3970 440

RB Series Crossed Roller Bearing Features:

1. Separable outer ring, type for inner ring rotation

2. High rigidity and precision, which can reach up to P5, P4, P2

3. Easy Installation and get used to small spaces.

4. Extremely Thin inner and outer rings with high rigidity

Usage Characteristics of RB Series Crossed Roller Bearing:

The cross array of rollers allows a single cross roller bearing unit to receive loads in all directions, increasing the rigidity to three to four times greater than the conventional type

RB Series Crossed Roller Bearing Application:

Swiveling tables of machining centers, precision rotary tables, and medical equipment.

Selection of crossed roller bearing

Notes in use of crossed roller bearings:

The two-divided imner or outer ring fixed with special rivets or bolts and nuts inseparable. and should be diectly mounted into the bearing base for use. Meanwhile. if the spacer holder assembling sequenceis improper ,it will have a great impact on the rotation performance of the bearing.so,the bearing can not be disassembled freely.There is some deviation athe joint of inner or outer ring, before it is mounted into the bearing seat.the bolts to fix the imner or outer ring should be loosened to correct it with a plastic hammer. (the fixed rivets may be deformed with the bearing base deformation)Do not apply any extermal force onto the fixed rivets orbolts during the mounting or removal.

Please note the size tolerances of the mounting parts, and press securely the inner or outer ring with the flange from the side.

Lubrication for crossed roller bearing:

The crossed roller bearing has been filled with high quality 2# lithium grease, so it can be directly mounted for use. However. compared with common roller bearings it has a smaller intemal space. so the grease must be replenished periodically.

The grease should be replenished from the grease hole connected to the grease groove on the outer and inner rings. The grease replenishment interval is generally 6-12 months. The same grease must be replenished in all areas

Meantime, when the grease is filled fully,the initial rotation torque will be increased in a short ime due to the grease resistance;when the excess grease is spilled from the seal portions,it will soon be retumed to the normal torque value.