PSI Series0 pages

A L L TO R Q LT D
Industrial Clutch, Brake & Motion Control Specialists

PSI Series - Mechanical Wrap Spring Clutches:

Robust, Simple Design with High Torque Density
3 Designs for Overrunning, Start Stop & Indexing
Model O = Overrunning, SS = Start Stop, S = Indexing
Designed for Custom Actuation
Electric or Pneumatic Actuation can be Supplied
Model S - 10% Rated Torque for Braking
20% Braking Torque with Overtravel Stop Option

All dimensions in mm

A

B

C

D

E

F

G

(mm)

PSI-2
PSI-3
PSI-4
PSI-5
PSI-6
PSI-7
PSI-8

(mm)

(mm)

(mm)

(mm)

(mm)

(mm)

23.90
28.50
31.75
36.90
61.90
72.40
101.60

28.60
35.05
35.05
47.75
58.70
95.25
107.90

4.10
3.05
4.10
5.60
7.15
7.15
15.75

10.70
10.70
10.70
12.70
20.65
42.50
44.94

12.45
17.30
17.30
25.40
22.10
25.40
55.90

8.40
2.30
8.65
8.65
6.90
22.10
8.90

6.35
6.35
6.35
6.35
6.35
15.90
4.80

H

J

K

M

(Min.) (Max.) (mm)

(mm)

(mm)

#

22.26
19.04
28.62
38.16
39.60
50.75
60.26

4.17
4.17
3.17
4.77
6.35
9.52
9.52

14.50
33.30
33.30
42.95
69.90
75.50
50.80

3
4
6

22.30
19.05
28.63
38.17
39.67
50.80
60.29

25.40
33.30
33.30
42.95
69.90
75.50
91.90

Static Torque
PSI-2
PSI-3
PSI-4
PSI-5
PSI-6
PSI-7
PSI-8

Weight

Max. Speed

HI Inertia

SI Inertia

(Kg)

(RPM)

(Kgm²)

(Kgm²)

(N)

1,800
1,200
1,200
750
500
400
300

-6

-6

Thread PCD

No
No
No
No
M6 52.40 Yes
M8 63.50 Yes
M8 85.75 Yes

Radial Bear-

(Nm)

2.82
5.65
13.50
28.00
56.00
169.50
282.50

0.10
0.14
0.14
0.34
1.36
3.18
4.10

2.35
4.95
6.74
1.73
2.14
2.85
3.29

-6
-6
-5
-4
-4
-3

1.76
3.25
4.39
1.73
1.67
1.95
1.46

-6
-6
-5
-4
-4
-3

31
44
62
137
280
822
1,334

Key-

N

Bore
(Min.)
H9

6
6 H9
6 H9
6 H9
20 H9
20 H9
35 H9

(Max.)

6 H9
6 H9
10 H9
12 H9
25 H9
25 H9
40 H9

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