Built for powering mixers, conveyors, winches, turntables, and custom machinery, the Cleco A8R309M A8 Series Reversible Axial Piston Air Motor delivers 2.7 HP with a fast 2,600 RPM free speed for applications that need continuous rotary output without relying on an electric motor. Its axial piston design (pistons arranged in line with the motor axis to generate smooth rotary power) provides a compact, high-output pneumatic drive for equipment where air power, reversibility, and stall tolerance are important.With 19 ft-lbs of stall torque, 1,300 RPM at maximum horsepower, reversible rotation, and rear exhaust, the A8R309M is suited for machine builders and maintenance teams replacing or specifying an air-powered motor in production equipment. The 1-1/8″ keyed spindle supports positive mechanical power transfer to compatible couplings, pulleys, or driven components, while the 1/2″ NPTF air inlet and 112 SCFM air consumption help buyers plan the required compressed air supply.Type: Air Motor | Series: A8 Series | Motor Configuration: Axial Piston | Control: Reversible | Power: 2.7 HP / 2.01 kW | Free Speed: 2,600 RPM | RPM at Max HP: 1,300 RPM | Stall Torque: 19 ft-lbs / 26 Nm | Starting Torque: 14 ft-lbs / 19 Nm | Spindle Type: 1-1/8″ Diameter Keyed Spindle | Gear Ratio: 1-1 | Length: 17.5″ | Weight: 38 lbs / 17.2 kg | Air Consumption: 112 SCFM | Air Inlet: 1/2″ NPTF | Exhaust: Rear | Mounting: Face Mounting | Max Overhung Load at Stall: 1,000 lbs / 454 kgFeatures:Axial piston air motor configuration provides high pneumatic output in a compact mountable package.Reversible rotation allows the motor to drive equipment in either direction when paired with the correct pneumatic control setup.Rear exhaust directs spent air away from the driven component and helps simplify integration into guarded or enclosed machinery.1-1 gear ratio delivers direct-speed output for applications requiring the full 2,600 RPM free speed of the A8R309M.1-1/8″ diameter keyed spindle supports positive engagement with compatible mechanical couplings and drive components.Face mounting configuration supports fixed installation on production machinery, test fixtures, and custom equipment frames.Air-powered design can stall under load without the same overheating risk associated with many electric motors, provided the system is properly specified and lubricated.Made in USA: Applications:Production machinery integration powering conveyors, indexing tables, rotary fixtures, and other equipment requiring continuous pneumatic rotation.Mixing and agitation systems driving compatible mixers where air power is preferred over electric drive components.Winches and hoist-related equipment supplying reversible rotary motion in properly guarded, application-specific mechanical assemblies.Packaging and material handling supporting machine functions that benefit from variable air control and fast directional response.Industrial MRO and machine rebuilding replacing worn air motors or specifying a pneumatic drive for custom maintenance projects.FAQs:Q: What does stall torque mean on this Cleco air motor?A: Stall torque is the torque available when the motor is stopped under load. For the A8R309M, the stall torque is 19 ft-lbs, which helps buyers compare the motors low-speed load capability against the torque required by the driven equipment.Q: Can the A8R309M run in both directions?A: Yes. This A8 Series motor is reversible, meaning it can provide clockwise or counterclockwise rotation when installed with the proper pneumatic control arrangement.Q: What air supply is required for this air motor?A: The A8R309M has a 1/2″ NPTF air inlet and listed air consumption of 112 SCFM. The compressed air system should be sized to maintain the required flow and pressure at the motor during operation.Q: What is the difference between free speed and RPM at max horsepower?A: Free speed is the no-load speed of the motor, listed here as 2,600 RPM. RPM at max horsepower is the operating speed where the motor produces its rated power output, listed as 1,300 RPM for this model.Q: Is this a good replacement for an electric motor?A: It can be, when the required speed, torque, mounting, spindle, air consumption, and duty cycle match the machine. Air motors are often selected where reversibility, stall tolerance, or compressed-air operation is preferred, but the final fit should be confirmed against the equipments mechanical requirements. .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;overflow-wrap:anywhere;word-break:normal} .spec-table td{padding:6px;border:1px solid #eee;text-align:center;line-height:1.15;white-space:normal;overflow-wrap:anywhere;word-break:normal} .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)A8R336MFace Mounting1 3/8 in Keyed Spindle3875638.0 | 8655123.133.6-120.63 | 5242.7112ReversibleA8R338MFace Mounting1 3/8 in Keyed Spindle65125385.0 | 5225123.120.3-120.63 | 5242.7112ReversibleA8R337MFace Mounting1 3/8 in Keyed Spindle109215226.0 | 3065123.111.9-120.63 | 5242.7112ReversibleA8R311MFace Mounting1 1/8 in Keyed Spindle225450110.0 | 1493817.25.8-117.5 | 4452.7112ReversibleA8R310MFace Mounting1 1/8 in Keyed Spindle37576564.0 | 873817.23.4-117.5 | 4452.7112ReversibleA8R309MFace Mounting1 1/8 in Keyed Spindle1300260019.0 | 263817.21-117.5 | 4452.7112Reversible (function(){ function initSpecAccordions(){ document.querySelectorAll(“.spec-accordion”).forEach(function(a){ if(a.dataset.specAccordionInit===”true”)return;a.dataset.specAccordionInit=”true”; 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