Ultimate positioning accuracy can be obtained using the fine lead of SV/BV/PV recirculating roller screws. Their great mechanical advantage minimizes input torque and increases resolution. They can simplify a complete transmission and improve its rigidity. They are often used in applications of advancing tech- nology where reliable optimum performance is vital.

Drawing (click to enlarge)

 

Range

Standard range

 
 

Recirculation type

Recirculating roller screw

 
 

Nut type

Flanged nut

 
 

Lead

Ph [mm]

1

 
 

Preload

Optimum rigidity

 
 

Number of thread

[N ]

1

 
 

Helix angle

Ø [°]

1,82

 
 

Dynamic Load

Ca [kN]

5,1

 
 

Static Load

Coa [kN]

5,7

 
 

Minimum nut rigidity

Rng [N/µm]

185

 
 

Reference nut rigidity

Rnr [N/µm]

250

 
 

Preload torque

Tpr [Nm]

0,03-0,10

 
 

Preload force

Fpr [N]

820

 
 

Nut mass

mn [kg]

0,2

 
 

Screw mass

ms [kg/m]

0,57

 
 

Screw inertia

Is [kgmm2/m]

6,7

 
 

Nut inertia

Inn [kgmm2]

47

 
 

Rollers inertia

Ins [kgmm2]

0,1

 
 

Grease quantity for nut

Zn [cm3]

0,95

 
 

d0

[mm]

9,7

 
 

d2

[mm]

9,1

 
 

D

[mm]

22

 
 

A

[mm]

40

 
 

A1

[mm]

12

 
 

A2

[mm]

16

 
 

D1

[mm]

43

 
 

J

[mm]

33

 
 

G

[mm]

M4

 
 

r

[mm]

0,4

 
 

Q

[mm]

M6

 
 

u

[°]

30

 
 

D2

[mm]

18,5

 
 

d1

[mm]

10