SKF SRC 21x6 丝杠

Range

Standard range

Recirculation type

Planetary roller screw

Nut type

Cylindrical nut

Nominal screw diameter

d0 [mm]

21

Lead

Ph [mm]

6

Preload

Axial play

Number of thread

[N ]

5

Helix angle

? [°]

5,2

Dynamic load category

[kN]

30-50

Standard number of rollers

[Nr ]

9

Max. number of rollers

[Nmax ]

11

Dynamic Load

Ca [kN]

52,77

Static Load

Coa [kN]

82,18

Max. axial play

[mm]

0,02

Nut mass

mn [kg]

0,4

Screw mass

ms [kg/m]

2,7

Screw inertia

Is [kgmm2/m]

149,9

Nut inertia

Inn [kgmm2]

141,2

Rollers inertia

Ins [kgmm2]

6,5

Grease quantity for nut

Zn [cm3]

5,03

d1

[mm]

21,4

d2

[mm]

20,3

D

[mm]

45

A

[mm]

64

w

[mm]

0,5

a

[mm]

5

b

[mm]

20

H

[mm]

47

Q

[mm]

5

B

[mm]

4

D2

[mm]

40,5

D3

[mm]

26

Option :
Backlash elimination with oversize rollers