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]

2

 
 

Preload

Optimum rigidity

 
 

Number of thread

[N ]

2

 
 

Helix angle

Ø [°]

1,14

 
 

Dynamic Load

Ca [kN]

36,9

 
 

Static Load

Coa [kN]

79,6

 
 

Minimum nut rigidity

Rng [N/µm]

975

 
 

Reference nut rigidity

Rnr [N/µm]

1 315

 
 

Preload torque

Tpr [Nm]

0,50-0,95

 
 

Preload force

Fpr [N]

2 320

 
 

Nut mass

mn [kg]

1,2

 
 

Screw mass

ms [kg/m]

6,18

 
 

Screw inertia

Is [kgmm2/m]

773,3

 
 

Nut inertia

Inn [kgmm2]

1 110

 
 

Rollers inertia

Ins [kgmm2]

9,1

 
 

Grease quantity for nut

Zn [cm3]

6,92

 
 

d0

[mm]

31,7

 
 

d2

[mm]

31,1

 
 

D

[mm]

56

 
 

A

[mm]

67

 
 

A1

[mm]

23,5

 
 

A2

[mm]

20

 
 

D1

[mm]

84

 
 

J

[mm]

70

 
 

G

[mm]

M6

 
 

r

[mm]

0,8

 
 

Q

[mm]

M6

 
 

u

[°]

30

 
 

D2

[mm]

45

 
 

d1

[mm]

32