Bearing cages
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.
BFW
Flat single-row bearing cages with bearing needles
Technical drawing of BFW bearing cages
Dimension table of BFW bearing cages
|
Needle
diameter Ø |
Type
/symbol |
Dimensions
|
Load capacity *
|
||||||
|---|---|---|---|---|---|---|---|---|---|
|
A
|
DW
|
LW
|
t
|
e
|
LK
max |
C
[N] |
CO
[N] |
||
|
5
|
BFW5 x 21
|
21
|
5
|
11.8
|
8
|
5.5
|
2 000
|
84 800
|
218 700
|
|
5
|
BFW5 x 29
|
29
|
5
|
19.8
|
8
|
5.5
|
2 000
|
128 900
|
375 000
|
|
7
|
BFW7 x 45
|
45
|
7
|
30
|
11
|
7.5
|
2 000
|
218 900
|
588 600
|
|
12
|
BFW12 x 60
|
60
|
12
|
36
|
16
|
10
|
2 000
|
376 500
|
829 600
|
| *) - Load capacity for the theoretical length of the cage of 100 mm with the thrust force "F" in accordance to the drawing. - 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 BFW bearing cages
|
Table for weight values of bearing cages
(for the length of Lk=1000 mm) [g] |
|
|
Type/symbol
|
Steel
|
| BFW5 x 21 | 760 |
| BFW5 x 29 | 1 070 |
| BFW7 x 45 | 2 200 |
| BFW12 x 60 | 3 950 |
FSteel
