Cross Roller Bearing

The Ultimate Guide to Selecting Crossed Roller Bearings: THK Standard Cross Roller Bearings

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THK Standard Cross Roller Bearings
Contents Hidden
1 1. THK Standard RB Series Cross Roller Bearings
1.1 Integral inner ring, split outer ring
1.2 RB Series Cross Roller Bearing
2 2. THK Standard RA Series Cross Roller Bearings
2.1 Split outer ring type with rotating inner ring
2.2 RA Series Cross Roller Bearing
3 3. THK Standard RU Series Cross Roller Bearings
3.1 Inner and outer ring integral type
3.2 RU Series Cross Roller Bearing
3.3 LKPB With more than 10 years of production experience
3.3.1 Get a free quote fast
3.4 FAQ
3.4.1 What is LKPB?
3.4.2 Are your products reliable?
3.4.3 Do you have export experience?
3.4.4 Contact information for LKPB?
3.4.5 What types of bearings do you mainly produce?
3.4.6 Does it support OEM?
3.4.7 What are the application areas of bearings?
3.4.8 How long does the order cycle take?

There are 3 series of THK standard cross roller bearings, RA, RB and RU series, which are designed differently and have their own advantages and disadvantages, suitable for different working environments, if you have any questions, please feel free to contact our expert team.

1. THK Standard RB Series Cross Roller Bearings

Integral inner ring, split outer ring

The outer ring is divided into two pieces, the inner ring is a whole structure type, this series of cross roller bearings are suitable for applications with high rotational accuracy of the inner ring.

Bearing characteristics:
1. High precision: the precision can reach P5, P4, P2 level;
2. High rigidity: the series bearings are with preload;
3. High bearing capacity: can withstand axial load, radial load, tilting load.
4. Small volume: the bearings are small in size, which can save space for the host.

CRB/CRBC Crossed Roller Bearing

RB Series Cross Roller Bearing

LKPB Models inner ring outer ring width Greasing hole Chamfer Shoulder height Basic load rating（radial） weight
d D B B1 a-b r(min) ds Dh C C0 Kg
(mm) (mm) (mm) (mm) kN kN
RB2008 20 36 8 2-0.8 0.5 23.5 30.5 3.23 3.1 0.04
RB2508 25 41 8 2-0.8 0.5 28.5 35.5 3.63 3.83 0.05
RB3010 30 55 10 2.5-1 0.6 37 47 7.35 8.36 0.12
RB3510 35 60 10 2.5-1 0.6 41 51.5 7.64 9.12 0.13
RB4010 40 65 10 2.5-1 0.6 47.5 57.5 8.33 10.6 0.16
RB4510 45 70 10 2.5-1 0.6 51 61.5 8.62 11.3 0.17
RB5013 50 80 13 2.5-1.6 0.6 57.4 72 16.7 20.9 0.27
RB6013 60 90 13 2.5-1.6 0.6 68 82 18 24.3 0.3
RB7013 70 100 13 2.5-1.6 0.6 78 92 19.4 27.7 0.35
RB8016 80 120 16 3-1.6 0.6 91 111 30.1 42.1 0.7
RB9016 90 130 16 3-1.6 1 98 118 31.4 45.3 0.75
RB10016 100 140 16 3.5-1.6 1 109 129 31.7 48.6 0.83
RB10020 100 150 20 3.5-1.6 1 113 133 33.1 50.9 1.45
RB11012 110 135 12 2.5-1 1 117 127 12.5 24.1 0.4
RB11015 110 145 15 3.5-1.6 1.6 122 136 23.7 41.5 0.75
RB11020 110 160 20 3.5-1.6 1.6 120 143 34 54 1.56
RB12016 120 150 16 3.5-1.6 1.6 127 141 24.2 43.2 0.72
RB12025 120 180 25 3.5-2 2 133 164 66.9 100 2.62
RB13015 130 160 15 3.5-1.6 1.6 137 152 25 46.7 0.72
RB13025 130 190 25 3.5-2 2 143 174 69.5 107 2.82
RB14016 140 175 16 3.5-1.6 1.6 147 162 25.9 50.1 1
RB14025 140 200 25 3.5-2 2 154 185 74.8 121 2.96
RB15013 150 180 13 2.5-1.6 1.6 157 172 27 53.5 0.68
RB15025 150 210 25 3.5-2 2 164 194 76.8 128 3.16
RB15030 150 230 30 4.5-3 3 173 211 100 156 5.3
RB16025 160 220 25 3.5-2 2 173 204 81.7 135 3.14
RB17020 170 220 20 3.5-1.6 1.5 184 198 29 62.1 2.11
RB18025 180 240 25 3.5-2 1.5 195 225 84 143 3.44
RB19025 190 240 25 3.5-1.6 1 202 222 41.7 82.9 2.99
RB20025 200 260 25 3.5-2 2 215 245 84.2 157 4
RB20030 200 280 30 4.5-3 2 221 258 114 200 6.7
RB20035 200 295 35 5-3 2 225 270 151 252 9.6
RB22025 220 280 25 3.5-2 2 235 265 92.3 171 4.1
RB24025 240 300 25 3.5-2 2.5 256 281 68.3 145 4.5
RB25025 250 310 25 3.5-2 2.5 265 290 69.3 150 5
RB25030 250 330 30 4.5-3 2.5 269 306 126 244 8.1
RB25040 250 355 40 6-3.5 2.5 275 326 195 348 14.8
RB30025 300 360 25 3.5-2 2.5 315 340 76.3 178 5.9
RB30035 300 395 35 5-3 2.5 322 368 183 367 13.4
RB30040 300 405 40 6-3.5 2.5 326 377 212 409 17.2
RB35020 350 400 20 3.5-1.6 2.5 363 383 54.1 143 3.9
RB40035 400 480 35 5-3 2.5 422 459 156 370 14.5
RB40040 400 510 40 6-3.5 2.5 428 479 241 531 23.5
RB45025 450 500 25 3.5-1.6 1 464 484 61.7 182 6.6
RB50025 500 550 25 3.6-1.6 1 514 534 65.5 201 7.3
RB50040 500 600 40 6-3 2.5 526 572 239 607 26
RB50050 500 625 50 6-3.5 2.5 536 587 267 653 41.7
RB60040 600 700 40 6-3 3 627 673 264 721 29
RB70045 700 815 45 6-3 3 731 777 281 836 46
RB80070 800 950 70 6-4 4 836 900 468 1330 105
RB90070 900 1050 70 6-4 4 937 1001 494 1490 120
RB1000110 1000 1250 110 6-6 5 1057 1171 1220 3220 360
RB1250110 1250 1500 110 6-6 5 1308 1423 1350 3970 440

2. THK Standard RA Series Cross Roller Bearings

Split outer ring type with rotating inner ring

This series of bearings is a compact type that reduces the thickness of the inner and outer rings of RB series cross roller bearings to the limit.

They are suitable for parts requiring light weight and compact design, such as robot and manipulator rotating parts.

RA Series Cross Roller Bearing

RA Series Cross Roller Bearing

Shaft diameter LKPB Models Major dimensions Shoulder dimensions Basic load rating(radial) Weight
Inner diameter Outer diameter Width Greasing hole rmin
C C0 Mass
d D B B1 a b ds Dh kN kN kg
50 RA5008 50 66 8 2 0.8 0.5 53.5 60.5 5.1 7.19 0.08
60 RA6008 60 76 8 2 0.8 0.5 63.5 70.5 5.68 8.68 0.09
70 RA7008 70 86 8 2 0.8 0.5 73.5 80.5 5.98 9.8 0.1
80 RA8008 80 96 8 2 0.8 0.5 83.5 90.5 6.37 11.3 0.11
90 RA9008 90 106 8 2 0.8 0.5 93.5 100.5 6.76 12.4 0.12
100 RA 10008 100 116 8 2 0.8 0.5 103.5 110.5 7.15 13.9 0.14
110 RA11008 110 126 8 2 0.8 0.5 113.5 120.5 7.45 15 0.15
120 RA12008 120 136 8 2 0.8 0.5 123.5 130.5 7.84 16.5 0.17
130 RA13008 130 146 8 2 0.8 0.5 133.5 140.5 7.94 17.6 0.18
140 RA14008 140 156 8 2 0.8 0.5 143.5 150.5 8.33 19.1 0.19
150 RA15008 150 166 8 2 0.8 0.5 153.5 160.5 8.82 20.6 0.2
160 RA16013 160 186 13 2.5 1.6 0.8 165 179 23.3 44.9 0.59
170 RA17013 170 196 13 2.5 1.6 0.8 175 189 23.5 46.5 0.64
180 RA18013 180 206 13 2.5 1.6 0.8 185 199 24.5 49.8 0.68
190 RA19013 190 216 13 2.5 1.6 0.8 195 209 24.9 51.5 0.69
200 RA20013 200 226 13 2.5 1.6 0.8 205 219 25.8 54.7 0.71

3. THK Standard RU Series Cross Roller Bearings

Inner and outer ring integral type

This series of cross roller bearings eliminates the need for flanges and support seats because the mounting holes are already machined.

In addition, because of the integrated inner ring structure with a seat, there is almost no effect on performance during mounting, so stable rotational accuracy and torque can be obtained. They can be used in applications where both the outer and inner rings rotate.

RU Crossed Roller Bearing

RU Series Cross Roller Bearing

Diameter (mm) LKPB Models Main dimensions Shoulder height Basic load rating（radial） Weight
ID OD PCD B Oil hole rmin
d D dp β d1 ds Dh C/kN Co/kN kg
10 RU28 10 52 28 8 0.3 24 29.5 2.9 24 0.12
20 RU42 20 70 41.5 12 3.1 0.6 37 47 7.35 8.35 0.29
35 RU66 35 95 66 15 3.1 0.6 59 74 17.5 22.3 0.62
55 RU85 55 120 85 15 3.1 0.6 79 93 20.3 29.5 1
80 RU124(G) 80 165 124 22 3.1 1 114 134 33.1 50.9 2.6
RU124X
90 RU148(G) 90 210 147.5 25 3.1 1.5 133 162 49.1 76.8 4.9
RU148X
115 RU178(G) 115 240 178 28 3.1 1.5 161 195 80.3 135 6.8
RU178X
160 RU228(G) 160 295 227.5 35 6 2 208 246 104 172 11.4
RU228X
210 RU297(G) 210 380 297.3 40 6 2.5 272 320 156 281 21.3
RU297X
350 RU445(G) 350 540 445.4 45 6 2.5 417 473 222 473 35.4
RU445X

For other precision crossed roller bearings, please check our product center.

For expert guidance in meeting your specific requirements, reach out to our knowledgeable team. Experience firsthand how our precision solutions can elevate your machinery’s efficiency and durability. Contact us today!

LKPB With more than 10 years of production experience

Supporting OEM service; 50 days return service; 7*24 hours technical support; Accept non-standard customization; Maximum 24 months product warranty

GET A QUOTE
LKPB®

Get a free quote fast

Please let us know the product model and quantity you need and we will provide the most competitive quote! Alternatively, you can contact our knowledgeable customer service team

Email: [email protected]  WhatsApp/Wechat: +86 13613886217

    FAQ

    Luoyang LIKE Precision Machinery Co., Ltd – LKPB，Located in Luoyang, which is a bearing manufacturing base in China, we are an enterprise focusing on the research, development and manufacture of precision bearings, mainly producing precision crossed roller bearings and rotary table bearings and various non-standard bearings with precision class of P5, P4 , P2 and VSP.

    LKPB® strictly follows the ISO9001 quality system requirements for product quality control, relying on the professional technology of the bearing production base, the product quality is stable and cost-effective,

    LKPB®, turning the world, carrying unlimited! We have served thousands of customers all over the world during the ten years of our establishment.

    Our future goal is to become the most professional manufacturer of rotary table bearings and crossed roller bearings in China, and make LKPB® a world-class bearing brand.

    This is our vision and direction！

    LKPB® has accumulated rich production experience in the past 10 years,  supporting OEM service. Our products are exported to Germany, Italy, Korea, Japan, the United States, Belgium, Turkey and so on.

     Tel: 0086-379 63123369
    WhatsApp/Wechat: 86 15670310586
     Email: [email protected]

    Top quality:  Rotary Table Bearing ( YRT, YRTS, YRTM, ZKLDF series) ; Crossed Roller Bearing ( RA/RAU, RB, RU, RE, SX, XU, XSU, XR/JXR, CRB/CRBC, CRBH, CRBF, CRBS, CRBT series); Thin Section Bearings ( KAA, KA, KB, KC, KD, KF, KG, JHA, JA, JB, JG, JU series);  Harmonic Reducer Bearings ( CSF, SHF series); Angular Contact Ball Bearing ( 718, 719, 70, 72 series); Hollow Rotary Platform Bearings ( ZK series); and Flexible Bearings ( F series, 3E series).

    Yes, We have experience working in this area

    The main application areas of our products are precision rotary tables, machining center rotary tables, industrial robot joints and rotating, robotic rotating parts, CNC machine tools, automation industry, direct drive motors, precision instruments, radar, medical equipment and other industries.

    Regular models are in stock, reasonable prices, ready for delivery, non-standard precision bearings according to the requirements of the drawings and the number of 1-3 weeks delivery time

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