RU42 Cross Roller Bearing (d)20x(D)70x(B)12mm -RU42UUCCO P4 Precision Cross Roller Bearings CRBF 2012 With Mounting Holes

RU42UUCCO   Cross Roller Bearing (d)20x(D)70x(B)12mm -Precision Cross Roller Bearings With Mounting Holes  BOBI Bearing.Com

RU Crossed Roller Bearing
RU type (The outer ring and inner ring are high rigidity and integrated), Due to the outer ring and the inner ring have mounting holes, RU Series Cross Roller Bearings do not need to fix the flange and support seat during installation., and because the outer ring and the inner ring are in  integral structures, the installation will not have  any impact on performance, so it can obtain stable rotation accuracy and torque, and can be used in situations where the outer ring and inner ring rotate.
This type of bearing is widely used in industrial robots,  machinery and medical facilities, etc., where high rigidity, tightness and high speed can still ensure accuracy.
CRBF2012ATUU  can be used as an  alternative .

Parameters of RU42UUCCO

Inner ring (d): 20mm
Outer ring (D): 70mm
Width (B): 12mm
Weight: 0.29kg
Structure: crossed roller bearing, with mounting holes on inner and outer ring

Mounting hole of inner ring:
PCD1: 28mm (6--M3 through)
Mounting hole of outer ring:
PCD2: 57mm (6-φ3.4 drilled through,
φ6.5 counter bore depth 3.3)
Materials: Bearing steel (GCr15/52100/SUJ2)
Precision grade: P5 (P4 available upon request)
Lubrication type: Grease lubrication
Lubrication hole: Yes
Load direction: axial, radial and tilting moment.
Cylindrical rollers of crossed roller bearings are arranged at 90 ° intervals on the raceway. The rollers are equipped with spacers or spacers to prevent friction between the rollers caused by the inclination of the rollers. Lock-up occurs; Crossed roller bearings can withstand loads from all directions (such as axial, radial, or overturning loads) at the same time. The roller is in line contact with the raceway surface, so the bearing is less likely to deform elastically under load.
Structure of crossed cylindrical bearings
The structure of the crossed cylindrical roller bearing is divided into three types of outer ring split type, inner ring split type and inner and outer ring integrated type. The rolling elements are short cylindrical rollers arranged at 90 ° to each other in a V-shaped raceway. The rollers are separated by a spacer. This structural design allows a single bearing to withstand axial loads, radial loads, and overturning moments. At the same time, bearings have high rigidity, high rotation accuracy and high bearing capacity, so they are suitable for rotary joints of industrial robots, rotary tables of machining centers, precision rotary tables, medical machines, measuring instruments, etc.
Because the rollers are arranged in a cross, only one set of crossed roller collars can bear the load in all directions. Compared with the traditional model, the rigidity is increased by 3 to 4 times. Due to its special structure, it is usually used as an articulated bearing in industrial robots.

Our Stock

For those items are available in the warehouse, we shall deliver them within 7 days upon receiving payment, and those are not available , we shall arrange to produce them however a minimum order is required, and the lead time shall be around 10-30 days.

Applications:

Our BOBI cross roller bearings are widely used in the following fields:
Medical Equipment, Rotary polishing equipment, X-ray – MRI, Rotary pipe cutting equipment, Rotary welding equipment, Semi-conductor equipment Rotary actuators, Rotary work holding tables, Aerospace - auxiliary equipment, Turrets, Gun turrets, Turntables, Indexing tables, Missile launchers, Machine tools, Lathe accessories, Radar equipment, Robotics, Radar drives, Antenna pedestals, Packaging equipment, Satellite antennas, Pedestals Labeling machines, Truck mounted communication equipment, Food processing equipment, Bottling equipment.

NERT New Customer Bearings

Thanks to our experienced designer and manufacturing engineer, we accept customized design, some samples are shown below,if you are interested  in the customized design, please feel free to leave a message or contact us directly. These bearings include: Customized bearing for UAV , driving ring, integral thin section rack and hybird rolling media phosphating thin section bearing.