Linear ball bearings
Linear ball bearings are a crucial component of any linear guidance system. They enable smooth, precise, and failure-free motion along precision shafts, while minimizing friction and component wear.
SPM
SPM-type linear ball bearing
Self-alignment series, closed and open version
Self-alignment series, closed and open version
Technical drawing of SPM type linear ball bearing.
Dimension table of SPM type linear ball bearing.
|
Type
|
Ød
|
ØD
|
L
|
L1
|
L2
|
ØD1
|
W
|
(°)
|
G
|
J
|
Dyn. load capacity
C* [N] |
Stat. load capacity
C0* [N] |
Weight
[kg] |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
SPM-12
|
12
|
22
|
32
|
22.3
|
1.3
|
21.0
|
7.0
|
70
|
- |
0.7
|
1060
|
1170
|
0.02
|
|
SPM-16
|
16
|
26
|
36
|
24.6
|
1.3
|
24.9
|
9.8
|
70
|
- |
1.0
|
1280
|
1410
|
0.03
|
|
SPM-20
|
20
|
32
|
45
|
31.2
|
1.6
|
30.3
|
10.5
|
58
|
- |
1.0
|
2100
|
2310
|
0.06
|
|
SPM-25
|
25
|
40
|
58
|
43.7
|
1.85
|
37.5
|
13
|
60
|
1.5
|
1.5
|
4130
|
4540
|
0.13
|
|
SPM-30
|
30
|
47
|
68
|
51.7
|
1.85
|
44.5
|
15.3
|
60
|
2.0
|
2.2
|
5020
|
5520
|
0.19
|
|
SPM-40
|
40
|
62
|
80
|
60.3
|
2.15
|
59.0
|
21.4
|
58
|
1.5
|
2.7
|
8620
|
9480
|
0.36
|
|
SPM-50
|
50
|
75
|
100
|
77.3
|
2.65
|
71.5
|
24
|
55
|
2.5
|
2.7
|
12060
|
13270
|
0.66
|
| All dimensions in the table are in [mm], unless stated otherwise. *Load capacity values are given for hardened and ground precision shafts (min. 59 HRC) *For precision linear shafts of lower hardness, the effective load capacitied equal: - for WRA: Cef = 0,74·C Coef=0,8·Co - for WRB: Cef = 0,63·C Coef=0,7·Co |
|||||||||||||
Designation Method
|
|
SPM
|
20
|
OPN
|
WW |
|---|---|---|---|---|
| Series | ||||
| Size | ||||
| Open type | ||||
| Internal wipers |
