When a machine needs high starting force from compressed air instead of an electric motor, the Cleco MMS396M MM Series radial piston air motor delivers 15 HP of maximum power with 2,100 RPM free speed for driving mixers, conveyors, winches, hoists, valve actuators, and other powered equipment. Its radial piston design (pistons arranged around a crankshaft to create overlapping power strokes) provides smooth torque delivery under load, while the 138 ft-lbs stall torque rating indicates the torque available at stall when the motor is brought to a stop under load.The MMS396M is a direct-drive, foot-mounted motor with single-direction valving, rear exhaust, and a 1-1/4″ threaded spindle for integration into fixed machinery. It reaches 1,070 RPM at maximum horsepower, uses 348 SCFM of air, and is performance rated at 90 PSI, making air supply sizing a key part of installation planning.Type: Radial Piston Air Motor | Series: MM Series | Model: MMS396M | Maximum Power: 15 HP / 11.19 kW | Free Speed: 2,100 RPM | RPM at Max HP: 1,070 RPM | Stall Torque: 138 ft-lbs / 187 Nm | Starting Torque: 82 ft-lbs / 111 Nm | Air Consumption: 348 SCFM / 9.86 m/min | Control: Single-Direction Valving | Exhaust: Rear Exhaust | Spindle Type: 1-1/4″ Threaded Spindle | Mount: Foot Mounting | Gear Ratio: Direct Drive | Air Inlet: 1-1/4″ NPTF | Rated Air Pressure: 90 PSI / 620 kPa | Length: 20.42″ | Weight: 210 lbs / 95.3 kg | Max Overhung Load at Stall: 2,500 lbs / 1,134 kgFeatures:Radial piston construction provides smooth output torque for powered machinery where consistent force is required under load.15 HP maximum power supports larger mechanical drive applications that require more output than compact vane-style air motors.Direct-drive configuration keeps output speed high without a gear reduction stage.Single-direction valving is suited to applications where the motor runs in one operating direction.1-1/4″ threaded spindle provides a defined mechanical connection point for compatible driven components.Foot mounting allows the motor to be secured to machinery frames, bases, and fixed equipment layouts.Rear exhaust helps route spent air away from the spindle side of the motor during operation.Rated at 90 PSI with 348 SCFM air consumption, giving installers clear air supply requirements for system planning.Made in USA: Applications:Industrial machinery drives powering mixers, turntables, conveyors, and rotary equipment where compressed air is preferred over electric drive power.Hoists and winches supplying air-powered rotation for lifting, pulling, and controlled motion systems when properly integrated into the machine design.Valve actuation and mechanical positioning driving large valves, actuators, or indexing mechanisms that require strong starting torque.Foundry and fabrication equipment rotating or lifting fixtures, molds, and production components in air-powered work cells.Hazard-sensitive work areas replacing electric motors in wet, dusty, or spark-sensitive environments where pneumatic power is selected by the equipment designer.FAQs:Q: What does stall torque mean on the Cleco MMS396M?A: Stall torque is the torque available when the motor is slowed to a stop under load. For this model, the stall torque is 138 ft-lbs, which helps buyers compare starting and overload capability across air motor options.Q: Is the MMS396M a geared air motor?A: No. The MMS396M is a direct-drive MM Series radial piston air motor. Direct drive maintains the 2,100 RPM free speed without a gear reduction stage.Q: What air supply is required for this motor?A: The motor is performance rated at 90 PSI and consumes 348 SCFM. A properly sized compressed air system, regulator, and lubricator should be selected before installation.Q: Can this motor run continuously at full free speed?A: Cleco notes that these motors must be operated with sufficient load and should not be allowed to exceed the maximum allowable speed shown on the performance curve. For sustained operation, confirm the duty cycle and operating point against the catalog performance data.Q: What does single-direction valving mean?A: Single-direction valving means the motor is configured to run in one direction. For applications requiring reverse operation, verify the correct Cleco model or reverse valve kit before ordering. .spec-accordion{width:100%;max-width:1200px;margin:1em auto;font-family:”Montserrat”,Arial,sans-serif;box-sizing:border-box} .spec-accordion *{box-sizing:border-box} .spec-accordion-toggle{width:100%;display:flex;justify-content:center;align-items:center;position:relative;background:#444;color:#fff;border:0;padding:14px 48px;font-family:”Bai Jamjuree”,Arial,sans-serif;font-size:16px;font-weight:700;text-transform:uppercase;cursor:pointer;text-align:center} .spec-accordion-toggle::after{content:”+”;font-size:22px;position:absolute;right:18px} .spec-accordion.open .spec-accordion-toggle::after{content:””} .spec-accordion-panel{display:none!important;width:100%;padding:16px 0 0} .spec-accordion.open .spec-accordion-panel{display:block!important} .spec-accordion-panel[hidden],.spec-accordion:not(.open) .spec-accordion-panel{display:none!important} .spec-table-wrapper{width:100%;max-width:1200px;margin:0 auto;overflow-x:visible!important;overflow-y:visible} .spec-table{width:100%!important;max-width:1200px;min-width:0!important;margin:0 auto;border-collapse:collapse;table-layout:fixed;font-family:”Montserrat”,Arial,sans-serif;font-size:12px;color:#000} .spec-table th{background:#444;color:#fff;text-transform:uppercase;font-family:”Bai Jamjuree”,Arial,sans-serif;font-weight:700;font-size:11px;padding:8px 6px;border:1px solid #ddd;text-align:center;line-height:1.15;white-space:normal;word-break:normal;overflow-wrap:anywhere} .spec-table td{padding:6px;border:1px solid #eee;text-align:center;line-height:1.15;white-space:normal;word-break:normal;overflow-wrap:anywhere} .spec-table .long-text{white-space:normal} .spec-table tbody tr:nth-child(even){background:#f7f7f7} .spec-table tbody tr:hover{background:#e5e5e5} .spec-table a{color:#0066cc;text-decoration:none;font-weight:600;background:transparent;padding:0;border-radius:0;box-shadow:none} .spec-table a:hover{text-decoration:underline} .group-row td{background:#444;color:#fff;font-family:”Bai Jamjuree”,Arial,sans-serif;font-weight:700;text-transform:uppercase;text-align:left} @media(max-width:640px){.spec-accordion,.spec-table-wrapper,.spec-table{width:100%;max-width:100%}.spec-accordion-toggle{font-size:14px;padding:13px 48px}} .spec-accordion.is-mobile-table .spec-table-wrapper{overflow-x:visible!important;overflow-y:visible} .spec-accordion.is-mobile-table .spec-table{width:100%;max-width:100%;min-width:0!important;border:0} .spec-accordion.is-mobile-table .spec-table thead{display:none!important} .spec-accordion.is-mobile-table .spec-table,.spec-accordion.is-mobile-table .spec-table tbody,.spec-accordion.is-mobile-table .spec-table tr,.spec-accordion.is-mobile-table .spec-table td{display:block;width:100%} .spec-accordion.is-mobile-table .spec-table tr{margin-bottom:14px;border:1px solid #ddd;background:#fff} .spec-accordion.is-mobile-table .spec-table tbody tr:nth-child(even),.spec-accordion.is-mobile-table .spec-table tbody tr:hover{background:#fff} .spec-accordion.is-mobile-table .spec-table th,.spec-accordion.is-mobile-table .spec-table td{white-space:normal!important} .spec-accordion.is-mobile-table .spec-table td{display:flex;justify-content:space-between;gap:14px;text-align:right;border:0;border-bottom:1px solid #eee;padding:10px 12px;font-size:13px;word-break:break-word} .spec-accordion.is-mobile-table .spec-table td::before{content:attr(data-label);font-weight:700;text-transform:uppercase;color:#444;text-align:left;flex:0 0 46%} .spec-accordion.is-mobile-table .spec-table td>a{word-break:break-word;background:transparent} .spec-accordion.is-mobile-table .group-row td{text-align:center;background:#444;color:#fff} .spec-accordion.is-mobile-table .group-row td::before{content:none} Available Variations and SpecificationsSKUMountSpindle TypeRPM at Max HPFree SpeedTorque StallWeightGear RatioLengthHorsepowerAir ConsumptionControl(RPM)(RPM)Ft-Lb | NmLbkgin | mmHp | kW(SCFM)MMW422MFoot Mounting1 1/4 in Threaded Spindle711501952.0 | 2647231104.814.2-120.88 | 53015345No ValvingMMW423MFoot Mounting1 1/4 in Threaded Spindle194400715.0 | 970231104.85.2-120.88 | 53015332No ValvingMMS400MFoot Mounting1 1/4 in Threaded Spindle206400715.0 | 970226102.55.2-120.88 | 53015336Single Direction ValvingMMW421MFoot Mounting1 1/4 in Threaded Spindle10102100138.0 | 18721497.11-120.42 | 51915352No ValvingMMS396MFoot Mounting1 1/4 in Threaded Spindle10702100138.0 | 18721095.31-120.42 | 51915348Single Direction Valving (function(){ function initSpecAccordions(){ document.querySelectorAll(“.spec-accordion”).forEach(function(a){ if(a.dataset.specAccordionInit===”true”)return;a.dataset.specAccordionInit=”true”; var b=a.querySelector(“.spec-accordion-toggle”),p=a.querySelector(“.spec-accordion-panel”);if(!b||!p)return; var u=false; function m(){return(a.getBoundingClientRect().width||window.innerWidth)
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