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PSI Clutch Series

PSI Clutch Series

PSI Series clutches represent the most fundamental wrap spring clutch design. As a start-stop or single revolution clutch, it is actuated simply by external blocking or releasing of the stop collar. As a simple overrunning clutch it provides positive engagement of load to power source, but permits free overrunning when input power is slowed, stopped or reversed. All units can be supplied with hub input/shaft output or vice versa. Designed for applications where direct mechanical control is desired, the PSI Series clutch is a reliable, easily applied, low cost solution.

Overview

PSI Clutch Series Specifications:

PERFORMANCE PSI-2 PSI-4 PSI-5 PSI-6 PSI-8
Shaft Bores  mm (in) 6.4 (0.25) 9.53 (.375) 12.7 (0.5) 19.1
(0.75)
25.4
(1.0)
31.8
(1.25)
38.1
(1.5)
Hub Input Inertia, Rotary
kg-cm² (lb-in²)
0.023
(0.008)
0.06
(0.023)
0.202
(0.069)
2.14(0.73) 1.99(0.68) 34.90(11.91) 33.99(11.60)
Shaft Input Inertia, Rotary
kg-cm² (lb-in²)
0.02 (0.006)  0.06 (0.02) 0.18 (0.06) 1.67 (0.57) 14.62 (4.99)
Static Torque  Nm (lb-in) 2.825 (25) 13.56 (120) 28.25 (250) 56.5 (500) 282.5 (2500)
Max Radial Bearing Load
kg (lbs)
3.06 (6.75) 6.12 (13.50) 14.29 (31.50) 28.58 (63.0) 136.08 (300)
Max Operating Speed  RPM 1800 1200 750 500 300
Weight  kg (lbs) 0.06 (0.132) 0.10 (0.22) 0.28 (0.62) 1.18 (2.60) 3.74 (8.25)

PSI Series Highlights

  • Single revolution models can stop 10% of rated drive torque capacity
  • Single revolution, start-stop or overrunning clutch functions
  • Mechanically actuated clutches
  • 5 models fit ¼" to 1½" shafts 
  • Torque ranges from 25 lb.-in. to 2500 lb.-in.
  • Single stop collars for single revolution operation— multistops for less than one turn
  • Easy-to-machine hubs readily adapt to application needs
  • Self-lubricating, no maintenance
  • Simple mechanical actuation

Find a Product

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Family

Function

Motion Type

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Bore

Static Torque

NmNm

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Input

Rotation

Stops

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