DK-BEARING | Shenzhen Yijiubajiu Technology Co.,Ltd

RA7008-70x86x8mm-Crossed Roller Bearings

Model number RA7008 crossed roller bearing
Inner ring(mm) 70
Outer ring(mm) 86
Width(mm) 8
Weight(Kg) 0.1
Materials GCR15/GCR15SiMn
Precision P5/P4/P2
Lubrication Grease lubrication
Rotating part Inner Ring Rotation
Load direction Multi-load
Structure Outer ring split
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RA7008 Crossed Roller Bearing Specification:

Model
Number
Main dimensions Mounting dimensions Basic load rating
(radial)
weight
Inner ring
d (mm)
Outer ring
D(mm)
Roller
pitch
circle
dp(mm)
Width
B(mm)
Greasing
hole φ
Chamfer
r(min)
ds Dh C
kN
C0
kN
Kg
RA7008 crossed roller bearing 70 86 77 8 0.8 0.5 73.5 80.5 5.98 9.8 0.1

 

THK RA series crossed roller bearing:  click below links to see detailed parameters of each model. 

RA5008RA6008RA7008RA8008RA9008RA10008RA11008RA12008RA13008,

RA14008RA15008, RA16013, RA17013RA18013RA19013RA20013

THK RA series crossed roller bearing characteristics:

THK ‌‌ crossed roller bearing RA series is a thin-walled bearing, It carries heavy loads. Because of the divided inner or outer ring, are attached to the roller and spacer after the roller and spacer are installed to prevent separation from each other, so install the cross roller ring easily ,Since the rollers are arranged in a cross arrangement, only one set of crossed roller ring can withstand loads in all directions, and the rigidity is increased by 3 to 4 times compared with the conventional models. At the same time, since the inner ring or the outer ring of the crossed roller bearing has a two-divided structure, the bearing clearance can be adjusted, and even if a preload is applied, a high-precision rotational motion can be obtained.

THK RA series crossed roller bearing applications:

•Industrial robot arms, reducers

•Precision machines( turnable table)

•Rotation parts of Machine tools

•Medical equipments

• Measuring instruments


All THK RA series crossed roller bearing models:
DK bearing THK type RA7008 Crossed Roller Bearing has high rigidity, loading capacity and rotation accuracy. It has integrated inner ring and separable outer ring, share the same structure with RB crossed roller bearing except it’s ultra-thin. Suited for where light weight, compact design are required, such as the swiveling units of industrial robot or manipulators.

Model No. d (mm) D (mm) B (mm) Cr (kN) Cor (kN) Mass(kg)
RA5008 55 66 8 5.1 7.19 0.08
RA6008 60 76 8 5.68 8.68 0.09
RA7008 70 86 8 5.98 9.8 0.1
RA8008 80 96 8 6.37 11.3 0.11
RA9008 90 106 8 6.76 12.4 0.12
RA10008 100 116 8 7.15 13.9 0.14
RA11008 110 126 8 7.45 15 0.15
RA12008 120 136 8 7.84 16.5 0.17
RA13008 130 146 8 7.94 17.6 0.18
RA14008 140 156 8 8.33 19.1 0.19
RA15008 150 166 8 8.82 20.6 0.2
RA16013 160 186 13 23.3 44.9 0.59
RA17013 170 196 13 23.5 46.5 0.64
RA18013 180 206 13 24.5 49.8 0.68
RA19013 190 216 13 24.9 51.5 0.69
RA20013 200 226 13 25.8 54.7 0.71

To learn more about our company or get the Installation Instructions of RA7008 crossed roller bearing please feel free to contact us. Drawing and sample of RA7008 crossed roller bearing are available upon request.

DK provides high quality and fully replaceable bearing of THK RA7008 crossed roller bearing and other models.  Looking forward to your enquiry.

 

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