Pneumatic Slip-Aire Clutch

The Pneumatic Slip-Aire clutch is an air pressure-actuated version of the mechanical Slipper clutch. It has the same long-life friction plates, ensuring constant torque or tension. With air actuation it can be used to engage/disengage, to vary the torque during operation, or to adjust the torque remotely at any time. Ideal for servo mechanisms, they transmit higher torque levels than comparably sized mechanical slip clutches. Slip-Aire slip clutches are less expensive to purchase and operate than electrically actuated versions. Sealed ball bearings are available on selected models.

  • Can be adjusted remotely while the machine is in operation to accomplish quick, repeatable, accurate setup
  • Can accommodate shaft sizes up to 0.625”
  • Torque capacities of up to 300 lb-in
  • Fixed, adjustable and custom designs
example

Specifying a Polyclutch Part Number

Part Number Example (Slip Aire)

Standard Options

  • Bore size changes – English (inches) and metric (mm)
  • High torque option, accomplished by extra springs – “H” part no. suffix
  • Will increase capacity of standard adjustable slip clutches to 50% (note: removing springs will lower capacity, increase sensitivity)
  • Keyways – English and metric – “K” part no. suffix
  • Heavy inner plates for extra cooling – “D” part no. suffix
  • 303/304 stainless steel construction – “Q” part no. prefix
  • Plastic cover

Custom Clutches: If you are looking for something outside of our standard options, our engineers will work with you to help design a clutch for your specific application. Jusk ask!

Specifications - Dimensions in inches (mm) and Torque lb-in (Nm)

*Bore Diameter (dimension B) +.002 / -.000 inches (+.05 / -00 mm). Non-standard bore diameters are available up to the maximum diameter. listed for each model. 

Model Number A inches (mm) B STD.* B MAX.* C D E EE F G H J
AAS20 1.25  (31.75) .250  (8) .375  (10) 2.50  (63.50) .760  (19.30) .25  (6.35) .50  (12.70) 2.00  (50.80) 1.062  (26.98) 0.94  (2.39) 10-32
AAO20 1.25  (31.75) .250  (8) .375  (10) 2.50  (63.50) .760  (19.30) .25  (6.35) .50  (12.70) 2.00  (50.80) 1.062  (26.98) 0.94  (2.39) 10-32
AAS24 1.50  (38.10) .375  (10) .500  (13) 3.38  (85.85) 1.010  (25.65) .38  (9.65) .75  (19.05) 2.63  (66.80) 1.312  (33.73) .125  (3.18) 10-32
AAO24 1.50  (38.10) .375  (10) .500  (13) 3.38  (85.85) 1.010  (25.65) .38  (9.65) .75  (19.05) 2.63  (66.80) 1.312  (33.73) .125  (3.18) 10-32
AAS32 2.00  (50.80) .500  (12) .625  (16) 3.63  (92.20) 1.385  (35.18) .50  (12.70) 1.00  (25.40) 2.63  (66.80) 1.672  (42.47) .188  (4.78) 10-32
AAO32 2.00  (50.80) .500  (12) .625  (16) 3.63  (92.20) 1.385  (35.18) .50  (12.70) 1.00  (25.40) 2.63  (66.80) 1.672  (42.47) .188  (4.78) 10-32
AAS44 2.75  (69.85) .500  (12) .625  (16) 3.63  (92.20) 1.635  (41.53) .50  (12.70) 1.00  (25.40) 2.63  (66.80) 2.375 (60.33) .188  (4.78) 10-32
AAO44 2.75  (69.85) .500  (12) .625  (16) 3.63  (92.20) 1.635  (41.53) .50  (12.70) 1.00  (25.40) 2.63  (66.80) 2.375 (60.33) .188  (4.78) 10-32

Capacity, See Below: **Rated torque for continuous operation at 50PM. Torque can be higher or lower depending on actual RPM and duty cycle.  ***Maximum torque attainable at 100 PSI

Model Number Capacity
CONTINUOUS
@ 50 PSI**
lb-in (Nm)
Capacity
MAXIMUM
@ 100 PSI***
lb-in (Nm)
Watts Fricton Surfaces
AAS 20 & AAO 20 12 (1.36) 20 (2.26) 6 8
AAS 24 & AAO 24 25 (2.82) 50 (5.65) 15 12
AAS 32 & AAO 32 50 (5.65) 100 (11.30) 30 12
AAS 44 & AAO 44 75 (8.47) 300 (33.90) 43 12

AAO20 shaft thru

AAS20 shaft to shaft

AAO24 shaft thru 

AAS24 shaft to shaft 

AAO32 shaft thru 

AAS32 shaft to shaft

AAO44 shaft thru

AAS44 shaft to shaft

 

Continuous Slip Clutches Solve Many Design Engineering Problems

Polyclutch® Slip Clutches can slip continuously or intermittently for over 30 million cycles.  This opens up many design engineering options including...

View field application examples

Tension Control
Maintain constant tension while winding or unwinding wire, paper, film, thread, etc. Slip clutch automatically compensates for changes in speed and diameter. Pneumatic clutch can change tension during operation.
Force Control
Push product against gate with constant force. Remove gate and move to next position. No damage to product or conveyor – clutch does all the slipping. Also used for overload protection when jammed and for indexing the conveyor.
Torque Control
Screw bottle caps, screws, controls, etc., to correct torque setting. Combine with one way clutch to slip at rated torque in one direction and freewheel or positive drive in other direction.
Position Retention and Brake
Hold lid, cover, door, screen, etc., at any position. Fingertip control. Combine with one way clutch for free movement in one direction
 
Indexing
Hold index wheel with solenoid operated pin. Motor runs continuously with clutch slipping. Pin pulls back to index to next station. Can be single or partial revolution. Can index tables, conveyors, vending machines, controls, etc.
Soft Starts/Cushioned Stops
Inertia makes clutch slip when starting and/or stopping. Results in less shock throughout the system. Ideal for slip at the end of stroke.
Overload Protection
Protect machinery and operator. Clutch will slip when mechanism is jammed. Motion will continue when impediment is removed.
   

All Polyclutch® slip clutches perform the basic function of controlling the torque between two elements. They can be supplied as a shaft-to-shaft coupling or a shaft to pulley, gear, or sprocket model. Polyclutch custom slip clutches can be provided with nonstandard bore sizes, keyways, low backlash or higher torque, minus housings and with pulley, gear or sprocket. Imagination and ingenuity have developed and created additional variations not shown here.

Mounting Application Examples

Note: Outlines in Green are Custom Additions or Customer-Supplied

Shaft-Through Mounting Applications

Shaft-to-Shaft Mounting Applications

Vertical Mounting Application

Supply or Rewind Spool Application

Machine Frame Adapted to Housing or Cartridge

Hinge Retention Application

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