The capacity to carry heavy loads for thousands of hours in the most arduous conditions makes SR/BR/TR/PR planetary roller screws suitable for the most demanding applications. The robust nut can withstand shock loads and the timing mechanism ensures reliability even in harsh environments and at high accelerations; the long lead and the symmetrical design of the nut permit high linear speeds.

Drawing (click to enlarge)

 

Range

Standard range

 
 

Recirculation type

Planetary roller screw

 
 

Nut type

Flanged nut

 
 

Nominal screw diameter

d0 [mm]

64

 
 

Lead

Ph [mm]

12

 
 

Preload

Optimum rigidity

 
 

Number of thread

[N ]

6

 
 

Helix angle

Ø [°]

3,42

 
 

Dynamic load category

[kN]

100-150

 
 

Standard number of rollers

[Nr ]

14

 
 

Max. number of rollers

[Nmax ]

14

 
 

Dynamic Load

Ca [kN]

165,57

 
 

Static Load

Coa [kN]

381,65

 
 

Minimum nut rigidity

Rng [N/µm]

930

 
 

Reference nut rigidity

Rnr [N/µm]

1 200

 
 

Preload torque

Tpr [Nm]

1,99-3,98

 
 

Preload force

Fpr [N]

3 328

 
 

Nut mass

mn [kg]

11,3

 
 

Screw mass

ms [kg/m]

25,3

 
 

Screw inertia

Is [kgmm2/m]

12 900

 
 

Nut inertia

Inn [kgmm2]

50 200

 
 

Rollers inertia

Ins [kgmm2]

984,3

 
 

Grease quantity for nut

Zn [cm3]

46,24

 
 

d1

[mm]

64,8

 
 

d2

[mm]

62,7

 
 

D

[mm]

120

 
 

A

[mm]

129

 
 

A1

[mm]

42

 
 

A2

[mm]

45

 
 

D1

[mm]

180

 
 

J

[mm]

150

 
 

G

[mm]

M16

 
 

r

[mm]

1,6

 
 

Q

[mm]

M8

 
 

u

[°]

30

 
 

B

[mm]

11

 
 

D2

[mm]

106

 
 

D3

[mm]

75