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Multiple Disc Mechanical Clutches (MMS/MMD) Specifications
Advantages
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Operation
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Specifications / Dimensions
Clutch # | HP at 100 RPM | Dyn. Torque (ft/lbs) | St. Torque (ft/lbs) | Axial Sleeve Pressure(lbs) | I Body Bores(+.001) | I Body Bores(-.000) | Keyway |
20** | .100 | 5 | 10 | 15 | 1/2 | 5/8 | ** |
21 | .250 | 13 | 26 | 20 | 3/4 | 7/8 | 3/16 x 3/32 |
22 | .500 | 27 | 54 | 30 | 1 | 1 1/8 | 3/16 x 3/32 |
23 | 1.000 | 53 | 106 | 30 | 1 1/4 | 1 3/8 | 1/4 x 1/8 |
24 | 1.750 | 92 | 184 | 40 | 1 1/2 | 1 5/8 | 5/16 x 5/32 |
25 | 3.000 | 158 | 316 | 60 | 1 3/4 | 1 7/8 | 3/8 x 3/16 |
26 | 5.000 | 263 | 526 | 80 | 2 | 2 1/4 | 7/16 x 7/32 |
27 | 10.000 | 525 | 1050 | 105 | 2 1/2 | 2 3/4 | 9/16 x 9/32 |
28 | 15.000 | 788 | 1576 | 150 | 2 3/4 | 3 | 9/16 x 9/32 |
** Single clutch only.
**No. 20 clutch uses 3/16" roll pin in place of set screw and keyway. No. 20 clutch is not a stock item.
Clutch # | Disc Lugs | Sngl A |
Sngl B |
Dbl B |
Sngl/Dbl D |
Sngl/Dbl J |
Sngl/Dbl K |
Sngl/Dbl L |
20** | 3 | 2.594 | 2.375 | - | .375 | .375 | .855 | 2.125 |
21 | 3 | 2.594 | 3.000 | 4.750 | .375 | .500 | 1.125 | 2.125 |
22 | 3 | 3.188 | 3.469 | 5.531 | .438 | .500 | 1.281 | 2.625 |
23 | 3 | 3.938 | 4.031 | 6.469 | .531 | .625 | 1.469 | 3.125 |
24 | 3 | 4.250 | 4.031 | 6.469 | .531 | .625 | 1.469 | 3.563 |
25 | 8 | 4.938 | 4.813 | 7.719 | .609 | .750 | 1.719 | 4.063 |
26 | 12 | 5.469 | 5.000 | 8.094 | .609 | .750 | 1.719 | 4.625 |
27 | 12 | 7.469 | 6.344 | 10.438 | .875 | .812 | 2.063 | 6.500 |
28 | 12 | 8.625 | 6.563 | 10.875 | .875 | .812 | 2.063 | 7.500 |
** Single clutch only.
Clutch # | Sngl N |
Sngl/Dbl OM |
Sngl P |
Sngl/Dbl Q |
Sngl/Dbl SM |
Sngl/Dbl VM |
Sngl/Dbl X* |
20** | .063 | 1.313 | .563 | .125 | 1.984 | 2.188 | *** |
21 | .063 | 1.641 | .625 | .024 | 1.984 | 2.188 | 5/16 -18 |
22 | .063 | 1.938 | .703 | .016 | 2.484 | 2.750 | 5/16-18 |
23 | .063 | 2.266 | .797 | .016 | 3.234 | 3.563 | 7/16-16 |
24 | .063 | 2.266 | .797 | .016 | 3.266 | 4.063 | 7/16-16 |
25 | .094 | 2.719 | .953 | .031 | 4.484 | 4.875 | 7/16-16 |
26 | .094 | 2.906 | .953 | .031 | 5.484 | 5.875 | 7/16-16 |
27 | .094 | 3.750 | 1.125 | .031 | 6.984 | 7.500 | 7/16-16 |
28 | .094 | 3.989 | 1.125 | .031 | 7.984 | 8.500 | 7/16-16 |
* Dardelet self-locking full dog point set screw must bottom in spotted hole in shaft.
** Single clutch only.
**No. 20 clutch uses 3/16" roll pin in place of set screw and keyway. No. 20 mechanical clutches are not a stock item.
Internal Flange Driving Cups | ||||||||
Cup # | A | B | D | E | H | J* | Mtg. Holes | Slots |
MMS-0021-106-300 | 2.188 | 1.033 - 1.031 | 1.031 | .188 | 1.500 | 8 | 3 | 3 |
MMS-0022-106-300 | 2.750 | 1.4395 - 1.4375 | 1.250 | .188 | 1.938 | 10 | 3 | 3 |
MMS-0023-106-300 | 3.563 | 1.9395 - 1.9375 | 1.406 | .250 | 2.563 | 1/4 | 3 | 3 |
MMS-0024-106-300 | 4.063 | 2.0645 - 2.0625 | 1.438 | .281 | 2.875 | 5/16 | 3 | 3 |
MMS-0025-106-300 | 4.875 | 2.5645 -2.5625 | 1.719 | .313 | 3.500 | 5/16 | 5 | 8 |
MMS-0026-106-300 | 5.875 | 3.627 - 3.625 | 1.906 | .313 | 4.500 | 5/16 | 5 | 12 |
MMS-0027-106-300 | 7.500 | 4.753 - 4.750 | 2.313 | .313 | 5.813 | 7/16 | 5 | 12 |
MMS-0028-106-300 | 8.500 | 5.753 - 5.750 | 2.500 | .313 | 6.813 | 7/16 | 6 | 12 |
*FL
Ring Driving Cups | ||||||||
Cup # | A | B | D | H | I | J* | Mtg. Holes | Slots |
MMS-0020-106-400 | 3.123 - 3.125 | 2.015 - 2.017 | .688 | 2.563 | .343 | 1/4 | 3 | 3 |
MMS-0021-106-400 | 3.123 - 3.125 | 2.015 - 2.017 | 1.031 | 2.563 | .343 | 1/4 | 3 | 3 |
MMS-0022-106-400 | 3.623 -3.625 | 2.515 - 2.517 | 1.156 | 0.188 | .343 | 1/4 | 3 | 3 |
MMS-0023-106-400 | 4.623 - 4.625 | 3.265 - 3.267 | 1.313 | 3.938 | .406 | 5/16 | 3 | 3 |
MMS-0024-106-400 | 5.123 - 5.125 | 3.765 - 3.767 | 1.313 | 4.438 | .410 | 5/16 | 3 | 3 |
MMS-0025-106-400 | 6.123 - 6.125 | 4.515 - 4.517 | 1.594 | 5.313 | .531 | 3/8 | 4 | 8 |
MMS-0026-106-400 | 7.120 - 7.125 | 5.515 - 5.517 | 1.781 | 6.250 | .531 | 3/8 | 6 | 12 |
MMS-0027-106-400 | 9.120 - 9.125 | 7.015 - 7.017 | 2.188 | 8.063 | .690 | 1/2 | 6 | 12 |
MMS-0028-106-400 | 10.120 - 10.125 | 8.015 - 8.017 | 2.438 | 9.063 | .680 | 1/2 | 6 | 12 |
*Cap screw size
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.