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Multiple Disc Air Clutch Units (AHA) Specifications

Advantages

  • Highest torque in the smallest space
  • Long life floating discs for low heat and extremely low neutral drag
  • No special tools required for repair or installation of component
  • Self-adjusting for wear

Operation

  • Torque range 30 lb. ft.- 1,200 lb. ft.
  • Wet or dry application
  • Automatic wear compensation
  • Stationary cylinder assembly
  • No levers, cams, or highly stressed parts
Air Clutch Diagram

Specifications / Dimensions

Model Static Torque* (ft. lbs.) Dynamic Torque* (ft. lbs.) B10 Bearing Life**(hours)
A

B
Std. Bore
AHA-0015999 30 15 10,000 3.500 3.34375 3/4 or 7/8
AHA-0025999 70 35 5,600 4.000 3.6250 1 or 1 1/8
AHA-0050999 100 50 5,600 4.500 3.9375 1 1/4 or 1 3/8
AHA-0100999 150 75 12,000 4.875 4.21875 1 1/2 or 1 5/8
AHA-0200999 250 125 5,600 5.750 4.6250 1 3/4 or 1 7/8
AHA-0400999 600 300 8,000 7.000 5.53125 2 or 2 1/4
AHA-0800999 1,200+ 600+ 8,000+ 9.500 6.37500 2 3/4 or 3

*Torque at 60 PSIG. Model refers to air clutch number.
**Measured at 1800 RPM. B10 Bearing Life means that there is a 10% chance of bearing failure at the end of the stated period of time.

Model Keyway C D G NPT
AHA-0015999 3/16 x 3/32 3.5000 .62500 .9375 .12500
AHA-0025999 3/16 x 3/32 4.1875 .68750 .06250 .12500
AHA-0050999 1/4 x 1/8 4.6875 .68750 .06250 .12500
AHA-0100999 5/16 x 5/32 5.1875 .87500 .18750 .12500
AHA-0200999 3/8 x 3/16 6.7500 .81250 .18750 .25000
AHA-0400999 7/16 x 7/32 8.500 1.09375 .12500 .25000
AHA-0800999 9/16 x 7/32 10.0000 1.18750 .18750 .25000

*Torque at 60 PSIG. St = Static. Dyn = Dynamic. Model refers to air clutch number.
**Measured at 1800 RPM. B10 Bearing Life means that there is a 10% chance of bearing failure at the end of the stated period of time.

Air Clutch Flanges
Internal Flange
Part # Used With*
A
B.C.
B
Screw Size Holes Pilot Dia.
C

D

E

F
Slots
EMA-00325 106-300 AHA-0015999 3.562 - 3.560 2.5670 - 2.5570 1/4 3 1.877 - 1.875 3.5000 1.0625 .1875 8
AHA-0025 106-300 AHA-0025999 4.250 - 4.248 3.067 - 3.057 1/4 3 2.377 - 2.375 4.1875 1.2500 .1875 8
EMA-0425 106-300 AHA-0050999 4.750 - 4.748 3.630 - 3.620 1/4 3 2.517 - 2.515 4.6875 1.2500 .1875 8
EMA-0475 106-300 AHA-0100999 5.250 - 5.248 3.942 - 3.932 5/16 3 2.517 - 2.515 5.1875 1.3750 .2500 8
EMA-0625 106-300 AHA-0200999 6.812 - 6.810 5.317 - 5.307 3/8 4 3.767 - 3.765 6.7500 1.6562 .3125 8
AHA-0400 106-300 AHA-0400999 8.562 - 8.560 6.255 - 6.245 1/2 4 4.877 - 4.875 8.5000 1.9375 .3125 12
AHA-0800 106-300 AHA-0800999 10.062 - 10.060 8.067 - 8.057 3/8 6 5.517 - 5.515 10.0000 2.0625 .3125 12

*"Used with" refers to air clutch number.

External Flange
Part # Used With
A
B.C.
B
Screw Size Holes Pilot Dia.
C

D

E

F
Slots
EMA-00325 106-200 AHA-0015999 4.625 - 4.623 4.130 - 4.120 1/4 3 3.300 - 3.298 3.5000 1.0625 .2500 8
AHA-0025 106-200 AHA-0025999 5.625 - 5.623 4.880 - 4.870 1/4 3 3.814 - 3.812 4.1875 1.1875 .2500 8
EMA-0425 106-200 AHA-0050999 6.125 - 6.123 5.380 - 5.370 1/4 4 4.314 - 4.312 4.6875 1.2500 .2500 8
EMA-0475 106-200 AHA-0100999 6.875 - 6.873 6.005 - 5.995 5/16 4 4.814 - 4.812 5.1875 1.3750 .2500 8
EMA-0625 106-200 AHA-0200999 8.500 - 8.498 7.692 - 7.682 3/8 4 6.377 - 6.375 6.7500 1.6562 .3125 8
AHA-0400 106-200 AHA-0400999 10.625 - 10.623 9.630 - 9.620 1/2 4 8.095 - 8.093 8.5000 1.9375 .3125 12
AHA-0800 106-200 AHA-0800999 12.250 - 12.248 11.130 - 11.120 3/8 6 9.533 - 9.531 10.0000 2.0625 .3125 12

In addition to our standard Multiple Disc Air Clutch Units, our engineering department can custom design and manufacture a new component to meet your specific requirements. If you have further questions or would like to discuss your specific needs, please contact us.


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