When a reversible pneumatic drive needs a lower output speed with stronger stall force, the Cleco A2R303M A2 Series Reversible Axial Piston Air Motor delivers 0.6 HP power at 345 RPM. Its axial piston design uses piston-driven compressed air to produce smooth rotary motion, giving machine builders and maintenance teams a compact air-powered option for equipment that must start, stop, reverse, or tolerate stalled-load conditions.The A2R303M is configured with a 7/8″ keyed spindle, rear exhaust, and 28 ft-lbs stall torque, making it a slower and stronger A2 Series option than higher-speed models in the same family. The keyed spindle provides a positive drive connection for compatible couplings, sprockets, pulleys, or other driven components, while rear exhaust directs spent air away from the spindle area to help simplify installation routing.Type: Reversible Axial Piston Air Motor | Series: A2 Series | Model: A2R303M | Spindle Type: Keyed | Spindle Size: 7/8″ | Power: 0.6 HP / 0.45 kW | Free Speed: 345 RPM | Stall Torque: 28 ft-lbs | Control: Reversible | Exhaust: RearFeatures:Axial piston air motor construction provides smooth pneumatic rotary power for machinery, fixtures, and integrated drive systems.Reversible operation supports clockwise and counterclockwise output rotation when used with the proper pneumatic controls.0.6 HP / 0.45 kW output offers compact air-powered drive capability for industrial equipment and OEM machine builds.345 RPM free speed supports controlled rotary motion where higher torque is more important than fast output speed.28 ft-lbs stall torque helps the motor handle load resistance during starting, holding, or stalled-load conditions.7/8″ keyed spindle provides a positive mechanical drive interface for compatible couplings, pulleys, sprockets, and driven components.Rear exhaust directs spent air away from the front spindle area to support cleaner installation routing in equipment layouts.Pneumatic motor design can stall under load without the same burnout risk associated with many electric motors.Made in USA: Applications:Industrial automation and machinery driving reversible fixtures, indexing mechanisms, compact rotary assemblies, and pneumatic equipment drives.Material handling systems powering rollers, feed mechanisms, take-up devices, and small conveyor functions where controlled motion is required.Mixing and process equipment supplying moderate low-speed rotary power for light agitation, stirring, or process-driven machinery.Plant maintenance and MRO replacing or specifying air-powered rotary motion in systems exposed to frequent starts, stops, and load changes.OEM machine building integrating a reversible pneumatic motor where keyed output, stall tolerance, and rear exhaust routing support the machine layout.FAQs:Q: How does the A2R303M differ from faster A2 Series models?A: The A2R303M runs at 345 RPM and provides 28 ft-lbs stall torque, so it is better suited for applications that need more torque at a lower output speed. Faster A2 Series models may be a better fit when speed is more important than stall force.Q: What does reversible mean on this Cleco air motor?A: Reversible means the motor can rotate in either direction when installed with the correct pneumatic control valve arrangement. This is useful for winding, positioning, feeding, and other machinery functions that require forward and reverse motion.Q: What is stall torque used for?A: Stall torque is the torque available when the motor is stopped by load resistance. The 28 ft-lbs rating helps buyers compare this model against other A2 Series motors for starting force, holding force, and stalled-load tolerance.Q: Why choose an air motor instead of an electric motor?A: Air motors are often selected where frequent starts, stops, reversing, variable speed control, or stall tolerance are important. They are also useful in pneumatic systems where compressed air is already available at the machine.Q: What does the 7/8″ keyed spindle connect to?A: The keyed spindle connects to compatible couplings, pulleys, sprockets, or other driven components. The keyway helps transfer torque through a positive mechanical connection rather than relying only on clamping friction. .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 5px;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 5px;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)A2R306MFace Mounting7/8 in Keyed Spindle4490107 | 145221053.6-114.28 | 3630.621.2ReversibleA2R305MFace Mounting7/8 in Keyed Spindle7515063.0 | 85221031.4-114.28 | 3630.621.2ReversibleA2R304MFace Mounting7/8 in Keyed Spindle9920048.0 | 65221023.8-114.28 | 3630.621.2ReversibleA2R303MFace Mounting7/8 in Keyed Spindle16934528.0 | 38221013.9-114.28 | 3630.621.2ReversibleA2R302MFace Mounting7/8 in Keyed Spindle25552019.0 | 26146.359.25-112.12 | 3080.621.2ReversibleA2R301MFace Mounting7/8 in Keyed Spindle57511708.0 | 11146.354.1-112.12 | 3080.621.2Reversible (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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