The linear bearing cage is an essential component of a linear rolling bearing built with the use of linear guides. The main task of the bearing cage is to hold the rolling elements inside the bearing on the guide's raceways in the correct operating position.
Flat plastic single-row bearing cages with bearing balls
Made of plastic
Work with R, RD, GR, LWR and other cross roller slides.
With balls holders.
Working temperature up to 105°C
Applicable to automatics, mechatronics, optomechanics
Technical drawing of RKK bearing cages
Dimension table of RKK bearing cages
Ball
diameter
Ø
Type
/symbol
Dimensions
Load capacity *
DW
t
A
d
e
C
[N]
CO
[N]
1.5
RKK1
1.5
2.2
3.5
0.45
1.5
30
17
2
RKK2
2
3.9
5
0.75
2.1
75
30
3
RKK3
3
4.2
7
1
2.2
134
68
4
RKK4
4
5.8
6.2
1.3
140
78
6
RKK6
6
7.8
9
1.6
6
230
130
6
RKK6-D**
6
9
14
2.5
230
130
8
RKK8
8
12
12
2
430
240
9
RKK9-D**
9
14
20
3.5
9
540
300
10
RKK10
10
12.5
13.2
2.5
655
365
20
RKK20
20
25
24.2
3.5
1950
1100
*) - Load capacity for 1 ball with the thrust force "F" in accordance to the drawing.
- C - dynamic load capacity, C0 - static load capacity
- The load capacity is calculated for guides with hardness of 60 +/- 2 HRc oand surface roughness of Ra<0.4.
- Load capacity of bearing cages is calculated on the basis of number of bearing needles mounted in the cage
- Length tolerance LK +0/-t
Weight table of RKK bearing cages
Table for weight values of bearing cages
(for the length of 100 balls) [g]
Type/symbol
Plastic
RKK1
1
RKK2
4.76
RKK3
13.33
RKK4
28.9
RKK6
94.6
RKK6-D
136.7
RKK8
230
RKK9-D**
476
RKK10
428.6
RKK20
336.8
Precision
Sorting tolerance
up to 0.5 µm
Quality
Quality Management System
compliant with ISO 9001:2015
Experience
Over 20 years of expertise
in linear technology.
Customization
We manufacture components
tailored to individual requirements
