Polyclutch®

Slip-Aire Pneumatic Slip Clutches

The 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.

Can be adjusted remotely while the machine is in operation to accomplish quick, repeatable, accurate setup
Can accommodate shaft sizes up to 0,625″ (16 mm)
Torque capacities of up to 300 lb-in (Nm) (136,1 kg)
Fixed, adjustable, and custom designs

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Specs

Torque Settings & Capacity

Fixed torque settings are denoted ‘F’ and adjustable torque settings are denoted ‘A’ in the configured part number
The torque capacities provided in the specification tables are based on continuous operation at 50 RPM and are only a guideline
- Torque, RPM, duty cycle and life are interdependent – a reduction of any of these will allow an increase in any other variable
- For example: running at 25 RPM will allow twice the torque, or running for only 10% of the cycle will allow higher RPM, etc.)
- The limit is based on heat build-up measured in watts per:
  Watts = Torque (inch pounds) x RPM x Duty Cycle* x 0,011.
  *(% of the time the clutch is slipping, expressed as a decimal. For example, 0,5 = 50% of the time the clutch is slipping)
- Please contact us to discuss high torque, high RPM, and rapid cycling applications

Note: Torque control in one direction can be achieved by combining with our overrunning (one-way) clutch.

Part Number Configuration

1. Type of Clutch

A = Slip-Aire Series

2. Torque Setting

A = Adjustable torque

3. Installation Type

S = Shaft to shaft
O = Shaft-through (for mounting to pulley, gear, sprocket, etc.)

4. Outer Diameter

Generally represented in sixteenths of an inch (size 32 = 32/16 inch = 2,00″ =50,8 mm)

5. Cartridge Bore Size

Represented in sixteenths of an inch (4/16″ = 1/4″) (6.35 mm = 6.35 mm). For metric, add MM after bore size (e.g. SAS24-4MM)

6. Housing Bore Size

Represented in sixteenths of an inch (6/16″ = 3/8″) (9.53 mm = 9.53 mm). For metric, add MM after bore size (e.g. SAS24-4MM-6MM)

Example

(1)	(2)	(3)	( 4)	–	(5)	–	(6)
(A)	(A)	(S)	(32)	–	(12MM)	–	(16MM)

Written as: AAS32-12MM-16MM

Part Number Configuration Guide

Slip Aire Part Number Examples

V-Series Clutches Sizes & Torque (Metric)

Clutch Sizes

Model No.	B (std)*	B (max)	A	C	D	E	EE	F	G	H	J
AAS 20 & AAO 20	8	9	31.75	63.50	19.30	6.35	12.70	50.80	26.98	2.39	10-32
AAS 24 & AAO 24	10	13	38.10	85.85	25.65	9.65	19.05	66.80	33.73	3.18	10-32
AAS 32 & AAO 32	12	16	50.80	92.20	35.18	12.70	25.40	66.80	42.47	4.78	10-32
AAS 44 & AAO 44	12	16	69.85	92.20	41.53	12.70	25.40	66.80	60.33	4.78	10-32

*Bore diameters (Dimension B): other than standards shown are available up to the maximum diameter.

Torque Capacity

Model No.	Capacity, 50 PSI*	Capacity, 100 PSI**	Watts	Friction Surfaces
AAS 20 & AAO 20	1.36	2.26	6	8
AAS 24 & AAO 24	2.82	5.65	15	12
AAS 32 & AAO 32	5.65	11.30	30	12
AAS 44 & AAO 44	8.47	33.90	43.000	12

*Rated torque for continuous operation at 50 RPM. Torque can be higher or lower depending on actual RPM & duty cycle.

**Maximum torque attainable (at 100 PSI).

V-Series Clutches Sizes & Torque (Imperial)

Clutch Sizes

Model No.	B (std)*	B (max)	A	C	D	E	EE	F	G	H	J
AAS 20 & AAO 20	0.250	0.375	1.25	2.50	0.760	0.25	0.50	2.00	1.062	0.94	10-32
AAS 24 & AAO 24	0.375	0.500	1.50	3.38	1.010	0.38	0.75	2.63	1.312	0.125	10-32
AAS 32 & AAO 32	0.500	0.625	2.00	3.63	1.385	0.50	1.00	2.63	1.672	0.188	10-32
AAS 44 & AAO 44	0.500	0.625	2.75	3.63	1.635	0.50	1.00	2.63	2.375	0.188	10-32

*Bore diameters (Dimension B): other than standards shown are available up to the maximum diameter.

Torque Capacity

Model No.	Capacity, 50 PSI*	Capacity, 100 PSI**	Watts	Friction Surfaces
AAS 20 & AAO 20	12	20	6	8
AAS 24 & AAO 24	25	50	15	12
AAS 32 & AAO 32	50	100	30	12
AAS 44 & AAO 44	75	300	43	12

*Rated torque for continuous operation at 50 RPM. Torque can be higher or lower depending on actual RPM & duty cycle.

**Maximum torque attainable (at 100 PSI).

Customization Options

If you are looking for something outside of our standard options, just ask!

In addition to standard output bores, we can provide hex, square, or threaded output bores in the housing end
To reduce overall cost or space concerns, an adjacent component of your mechanism can often be used as the clutch housing
Slip clutches are bi-directional by default; any clutch can be customized to operate in one direction by integration of a one-way bearing. (Addition of one-way bearing limits bore size)
“Y” for cartridge only – option for accommodating limited space (consult Dynatect engineering to discuss requirements)
- To reduce overall cost or space concerns, an adjacent component of your mechanism can often be used as the clutch housing
Bore size changes: Imperial (inches) and Metric (mm)
High torque option, accomplished by extra springs – “H” part no. suffix, HH= 100%
- 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
- Note: Plate modification is subject to the space limitations (dimension C) of standard clutches.
- Further customization (model dependent) may be needed to accommodate thicker plates.
300 stainless steel construction: “Q” part no. prefix (for corrosion resistance)
Two-plate slip clutch: “R” version (part no. begins with “R”)

customized slip clutches

Installation

Installation Tips

Shaft-through versions: Insert input shaft into cartridge and tighten set screws. Insert housing around input shaft, with torque pins engaging holes in outer plates. Input shaft will keep the cartridge and housing aligned.

Shaft to Shaft versions: Insert input shaft into cartridge and tighten set screws. Insert output shaft into housing and tighten set screws. Input and output shafts must be properly journaled with centerlines within +/- .010 T.I.R.

Do not lubricate the clutch! Friction materials are designed to run without additional lubrication. Lubrication will cause a change in torque and erratic behavior. The inherent axial loaded design will keep dirt and dust out of the friction surfaces.

Slip-Aire Polyclutch® Operation

Adjust torque setting by adjusting air pressure.
Adjusting air pressure controls pressure to the plates and friction pads of the clutch pack. Dynatect does not supply air fittings, air pressure regulator, and air lines.

Clutch pack consists of:

Inner plates keyed to flats on the hub
Outer plates keyed to internal slots in the housing
Floating friction pads between the inner and outer plates

The Slip-Aire Polyclutch® is designed for horizontal installation. For vertical applications (capping, driving, etc.) contact Dynatect directly for additional information.

AAS Shaft-to-Shaft Design Installation

AAO Shaft Through Design Installation

Slip Clutch Mounting Options

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 non-standard bore sizes, keyways, low backlash or higher torque, minus housings and with pulley, gear, or sprocket.

Mounting Options (PDF)

View more how Polyclutch® Slip Clutches operate

Sizes	Shaft-Through	Shaft-to-Shaft
Size 20	AAO20-4	AAS20-4
Size 24	AAO24-6	AAS24-6
Size 32	AAO32-8	AAS32-8
Size 44	AAO44-8	AAS44-8

RFQ

RFQ

Slip-Aire Pneumatic Slip Clutches