SKF has developed a unique CNC process and equipment for high precision rolled screws. The combination of Hightech machines and the control of the cold forming and metallurgical processes result in a screw that has virtually the same accuracy and performance of a ground unit at a lower cost.

Drawing (click to enlarge)

 

Nominal screw diameter

d0 [mm]

40

 
 

Lead

Ph [mm]

10

 
 

Preload

Backlash elimination by oversize balls

 
 

Dynamic load category

[kN]

50-100

 
 

Max length

[mm]

6 000

 
 

Dynamic Load

Ca [kN]

63,6

 
 

Static Load

Coa [kN]

127,1

 
 

Number of ball circuits

5

 
 

Preload torque

Tpr [Nm]

0,64

 
 

Max. axial play

[mm]

0,12

 
 

Reduced max. axial play

[mm]

0,08

 
 

Nut mass

mn [kg]

1,35

 
 

Screw mass

ms [kg/m]

8,4

 
 

Screw inertia

Is [kgmm2/m]

1 437

 
 

d2

[mm]

34

 
 

d1

[mm]

39,4

 
 

D

[mm]

65

 
 

M

M 60 x 2

 
 

A

[mm]

105

 
 

A2

[mm]

24

 
 

A3

[mm]

15

 
 

A1

[mm]

15

 
 

Q

[mm]

M8 x 1

 
 

Tightening spanner

HN9

 
 

N

[mm]

8