Precision shafts
Precision linear shafts represent an important category of linear guidance elements. In combination with shaft support blocks, housing units, linear ball bearings, and other accessories, they form a reliable and cost-effective linear motion system.
Linear systems based on precision shafts are widely used in variety of applications where, there is precise linear motion required- from automation and robotics to CNC machines and industrial positioning applications.
WRA
Precision linear shafts, designated as WRA_h6 are made of induction-hardened and ground X90CrMoV18 stainless steel.
Key specifications of WRA series shafts:
Technical drawing of WRA type precision shafts
Dimension table of WRA type precision shafts
|
Type
|
Shaft's diameter Ød [mm] |
L (max)
[mm] |
Weight
[kg/m] |
Diameter tol. ISO h6 [µm] |
T1
[µm] |
T2 1)
[µm] |
T3 2)
[mm] |
Min. hardened layer thickness [mm] |
|---|---|---|---|---|---|---|---|---|
|
WRA4
|
4
|
2000
|
0.098
|
0 /-8
|
4
|
5
|
0.3
|
0.4 3)
|
|
WRA5
|
5
|
3000
|
0.154
|
0 /-8
|
4
|
5
|
0.3
|
0.4 3)
|
|
WRA6
|
6
|
6000
|
0.222
|
0 /-8
|
4
|
6
|
0.3
|
0.4
|
|
WRA8
|
8
|
6000
|
0.394
|
0 /-9
|
4
|
6
|
0.3
|
0.4
|
|
WRA10
|
10
|
6000
|
0.616
|
0 /-9
|
4
|
6
|
0.3
|
0.4
|
|
WRA12
|
12
|
6000
|
0.888
|
0 /-11
|
5
|
8
|
0.3
|
0.6
|
|
WRA14
|
14
|
6000
|
1.208
|
0 /-11
|
5
|
8
|
0.3
|
0.6
|
|
WRA15
|
15
|
6000
|
1.387
|
0 /-11
|
5
|
8
|
0.3
|
0.6
|
|
WRA16
|
16
|
6000
|
1.578
|
0 /-11
|
5
|
8
|
0.2
|
0.6
|
|
WRA18
|
18
|
6000
|
1.997
|
0 /-11
|
5
|
8
|
0.2
|
0.6
|
|
WRA20
|
20
|
6000
|
2.466
|
0 /-13
|
6
|
9
|
0.2
|
0.9
|
|
WRA25
|
25
|
6000
|
3.853
|
0 /-13
|
6
|
9
|
0.2
|
0.9
|
|
WRA30
|
30
|
6000
|
5.549|
|
0 /-13
|
6
|
9
|
0.2
|
0.9
|
|
WRA35
|
35
|
6000
|
7.552
|
0 /-16
|
7
|
11
|
0.2
|
1.5
|
|
WRA40
|
40
|
6000
|
9.864
|
0 /-16
|
7
|
11
|
0.2
|
1.5
|
|
WRA45
|
45
|
6000
|
12.520
|
0 /-16
|
7
|
11
|
0.2
|
1.5
|
|
WRA50
|
50
|
6000
|
15.413
|
0 /-16
|
7
|
11
|
0.2
|
1.5
|
|
WRA60
|
60
|
6000
|
22.195
|
0 /-19
|
8
|
13
|
0.2
|
2.2
|
| 1) Diameter differential measurement over the length of 1000 mm 2) Measurement in accordance with DIN ISO 13012 3) Through-hardening permitted |
||||||||
Note:
Due to the lower surface hardness, the dynamic load capacity of linear bearings is reduced.
Effective load ratings: Cef = 0,74·C Coef=0,8·Co
We offer custom shaft cutting to any desired length as well as additional machining operations upon request.
Available machining options include:
Ordering Made Easy – Quick Center
To streamline your experience, we offer our Quick Center system – a fast-track service that delivers cut-to-length and machined precision shafts within 2 business days.
