RA Crossed Roller Bearings (outer ring division type with inner rotating, thin section) This model is a compact type of model  with extremely thin outer and inner rings. It is optimal for areas where the swiveling unit needs to be light and small. For example, the rotational part of industrial robots or manipulator.

RA Crossed Roller Bearings Features:

Our cross-roller bearings, because the divided inner ring or outer ring, after the rollers and spacers are installed, is fixed with the cross-roller ring to prevent separation from each other, so install the cross-roller shaft It is easy to operate when ringing. Since the rollers are arranged in a cross, only one set of cross roller rings can bear loads in all directions. Compared with the conventional model, the rigidity is increased by 3 to 4 times. At the same time, because the inner ring or outer ring of the cross roller bearing has a two-part structure, the bearing gap can be adjusted, and even if preload is applied, high-precision rotational movement can be obtained.

The classification and model series of the crossed roller bearings we produce:

  • RA type (outer ring split, ultra-thin type)
  • The RA series model is a compact type that reduces the thickness of the RB inner and outer rings to the limit. It is suitable for parts that require light weight and compact design, such as rotating parts of robots and manipulators.

1. RA Crossed Roller Bearings Structure

With the Cross-Roller Ring, 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 Cross-Roller Ring achieves high rigidity despite the minimum possible dimensions of the inner and outer rings.

RA20013

2.RA Crossed Roller Bearings Features

Compact, Highly Rigid Swivel Bearings, Achieving a Superb Rotation Accuracy
  • High speed capability
  • Reduce shaft length and processing costs, thermal expansion causes limited changes in geometric dimensions
  • Adopt nylon divider, low moment of inertia, low starting torque, easy to control angle indexing
  • Optimized pre-tightening force, high rigidity, high precision of guiding roller operation
  • Carburized steel provides excellent impact resistance and surface abrasion resistance
  • Simple but well lubricated
RA Series Cross Roller Bearing

3. RA Crossed Roller Bearings Applications

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

RA Series Cross Roller Bearing

4. RA Crossed Roller Bearings Video Introduction

5. If You Need Custom Made, Pls Contact Us

6.RA Crossed Roller Bearings Escription

RA Series Cross Roller Bearing
Shaft diameterLKPB ModelsMajor dimensions Shoulder dimensionsBasic load rating(radial)Weight
Inner diameter Outer diameterWidth Greasing holermin
CC0Mass
dDB B1 ab dsDhkN kNkg
50RA50085066 820.80.5 53.560.55.17.19 0.08
60RA600860 76820.8 0.563.570.55.68 8.680.09
70RA70087086 820.80.5 73.580.55.989.8 0.1
80RA800880 96820.8 0.583.590.56.37 11.30.11
90RA900890106 820.80.5 93.5100.56.7612.4 0.12
100RA10008100 116820.8 0.5103.5110.57.15 13.90.14
110RA11008110126 820.80.5 113.5120.57.4515 0.15
120RA12008120 136820.8 0.5123.5130.57.84 16.50.17
130RA13008130146 820.80.5 133.5140.57.9417.6 0.18
140RA14008140 156820.8 0.5143.5150.58.33 19.10.19
150RA15008150166 820.80.5 153.5160.58.8220.6 0.2
160RA16013160 186132.51.6 0.816517923.3 44.90.59
170RA17013170196 132.51.60.8 17518923.546.5 0.64
180RA18013180 206132.51.6 0.818519924.5 49.80.68
190RA19013190216 132.51.60.8 19520924.951.5 0.69
200RA20013200 226132.51.6 0.820521925.8 54.70.71

7.RA Series Cross Roller Bearing Number

RA10008 Crossed Roller Bearings

RA10008 Crossed Roller Bearings(outer ring division type with inner rotating, thin section) This model is a compact type of model 

RA11008 Crossed Roller Bearings

RA11008 Crossed Roller Bearings(outer ring division type with inner rotating, thin section) This model is a compact type of model 

RA12008 Crossed Roller Bearings

RA12008 Crossed Roller Bearings(outer ring division type with inner rotating, thin section) This model is a compact type of model 

RA13008 Crossed Roller Bearings

RA13008 Crossed Roller Bearings(outer ring division type with inner rotating, thin section) This model is a compact type of model 

RA14008 Crossed Roller Bearings

RA14008 Crossed Roller Bearings(outer ring division type with inner rotating, thin section) This model is a compact type of model 

RA15008 Crossed Roller Bearings

RA15008 Crossed Roller Bearings(outer ring division type with inner rotating, thin section) This model is a compact type of model 

RA16013 Crossed Roller Bearings

RA16013 Crossed Roller Bearings(outer ring division type with inner rotating, thin section) This model is a compact type of model 

RA17013 Crossed Roller Bearings

RA17013 Crossed Roller Bearings(outer ring division type with inner rotating, thin section) This model is a compact type of model 

RA18013 Crossed Roller Bearings

RA18013 Crossed Roller Bearings(outer ring division type with inner rotating, thin section) This model is a compact type of model 

RA19013 Crossed Roller Bearings

RA19013 Crossed Roller Bearings(outer ring division type with inner rotating, thin section) This model is a compact type of model 

RA20013 Crossed Roller Bearings

RA20013 Crossed Roller Bearings(outer ring division type with inner rotating, thin section) This model is a compact type of model 

RA5008 Crossed Roller Bearings

RA Series Cross Roller Bearing(outer ring division type with inner rotating, thin section) This model is a compact type of

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

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

    Contact Us

    FAQ

    Luoyang LIKE Precision Machinery Co., Ltd – LKPB®, Product precision can be P5, P4, P2 and VSP, Inside diameter size range φ20mm – φ2000mm. Maximum product quality warranty of 24 months, OEM acceptable.

    LKPB With more than 10 years of production experience, The most professional suppliers of precision bearings in China. 

    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.

    Top quality:

    1. Precision Rotary Table Bearings ( YRTYRTCYRTSYRTMZKLDF Series) 

    2. Precision Cross Roller Bearings ( RA/RA-C, RAURBRURWRESXXUXVXSUXR/JXR, CRB/CRBC, CRBF/CRBFV, CRBH/CRBHV,  CRBS/CRBSV, CRBT/CRBTF Series); 

    3. Precision Thin Section Bearings ( KAA, KA, KB, KC, KD, KF, KG, JHA, JA, JB, JG, JU Series);  

    4. Robot Harmonic Reducer Bearings (CSF/CSGSHF/SHGCSD Series, RV Reducer Bearings and Flexible Bearings F, 3E Series); 

    5. Angular Contact Ball Bearings ( 718, 719, 70, 722344/2347 Series);  

    6. Ball Screw Support Bearings ( ZKLF/ZKLNZARFZARN Series);

    7. Precise Slewing Ring ( Cross RollerFour-Point ContactEight-Point Contact Same PathEight-Point Contact Different PathThree-row roller and Flanged Series);

    8. Hollow Rotary Platform Bearings ( ZK 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