Linear Line EN

Easyslide

Fixing screws

The rails of the SN series in sizes 22 to 43 mm are fixed with countersunk head screws according to DIN 7991. The SNK43 series rails are fastened with countersunk head screws accor ding to DIN 7991 or with Torx ® head screws (special design, see fig. 25). The Torx ® screws for the rails variant TSC are included.

L

K

S

d

D

Fig. 25

Size

Screw type

d

D [mm]

L [mm]

K [mm]

S Tightening torque

63

M8 x 20

M8 x 1.25

13

20

5

T40

34,7

SNK43

M8 x 16

M8 x 1,25

16

16

3

T40

22

E S

Tab. 20

Recommended Standard fixing screw tightening torques

Rail Bracket

Property class

Size

Tightening torque [Nm]

22

3

28

6

35

10

10.9

43

25

63

30

Tab. 21

Fig. 26

A support of the rail sides is not strictly necessary, but it helps reduce stress on the screws and increases rigidity.

A support is advisable if the safety coefficient of the application is equal to or lower than 1.5.

Installation instructions ■ The internal stops on the SN series are used to stop the unloaded slider and the ball cage. Please use external stops as end stops for a loaded system.

■ To achieve optimum running properties, high service life and rigidity, it is necessary to fix the linear bearings with all accessible holes on a rigid and level surface.

■ Prepare a sufficient bevel on the threaded fixing holes, according to the following table:

Size

Bevel (mm)

22

0,5 x 45°

28

1 x 45°

35

1 x 45°

43

1 x 45°

Bevel

63

1 x 45°

Fig. 27

Tab. 22

ES-17