When equipment needs more torque than a direct-speed air motor but still requires controlled rotary speed, the Cleco A8R310M A8 Series Reversible Axial Piston Air Motor provides 2.7 HP, 765 RPM free speed, and 64 ft-lbs of stall torque for powering driven machinery from compressed air. Its axial piston design (pistons arranged parallel to the motor shaft to produce smooth rotary output) gives machine builders and maintenance teams a compact pneumatic drive option for conveyors, mixers, turntables, winches, and custom equipment.The 3.4-1 gear ratio lowers output speed while increasing usable torque compared with the 1-1 A8 model, making this motor better suited for applications where load control matters more than top-end speed. Reversible operation supports clockwise or counterclockwise rotation when installed with the proper pneumatic control setup, while rear exhaust routes spent air away from the driven component and helps simplify installation in guarded or enclosed machine layouts.Type: Air Motor | Series: A8 Series | Motor Configuration: Axial Piston | Control: Reversible | Power: 2.7 HP / 2.01 kW | RPM at Max HP: 375 RPM | Free Speed: 765 RPM | Stall Torque: 64 ft-lbs / 87 Nm | Mount: Face Mounting | Spindle Type: 1/8″ Keyed Spindle | Gear Ratio: 3.4-1 | Length: 17.5″ / 445 mm | Weight: 2.1 lb / 0.95 kg | Air Consumption: 112 SCFM | Air Inlet: 1/2″ NPTF | Exhaust: RearFeatures:Axial piston air motor configuration delivers pneumatic rotary power for machinery, fixtures, and equipment drives.Reversible control allows the motor to operate in either direction when paired with the correct air control arrangement.3.4-1 gear ratio reduces output speed and increases torque availability for slower, higher-load machine functions.Rear exhaust helps direct spent air away from the work area, driven component, or guarded equipment enclosure.Face mounting supports fixed installation on machine frames, brackets, production equipment, and custom-built assemblies.Keyed spindle provides positive mechanical engagement with compatible couplings, pulleys, sprockets, or other drive components.Air motor operation supports stall-tolerant performance in applications where pneumatic power is preferred over electric drive components.Made in USA: Applications:Machine building and automation driving rotary tables, indexing fixtures, and equipment functions requiring reversible pneumatic motion.Material handling systems powering conveyor sections, rollers, and controlled movement mechanisms where compressed air is already available.Mixing and agitation equipment supplying moderate-speed, higher-torque output for compatible mixer and agitator assemblies.Industrial MRO and repair replacing an existing A8 Series air motor or specifying a pneumatic drive during machine rebuilds.Custom pneumatic equipment integrating into winch, lift-assist, packaging, and fixture designs that require compact rotary power.FAQs:Q: What makes the A8R310M different from the A8R309M?A: The A8R310M uses a 3.4-1 gear ratio, giving it a lower 765 RPM free speed and higher 64 ft-lbs stall torque. The A8R309M is a faster 1-1 model with 2,600 RPM free speed and lower stall torque.Q: What does stall torque mean on this air motor?A: Stall torque is the torque available when the motor stops under load. For this model, 64 ft-lbs helps compare the motors load-holding and low-speed capability against the torque requirement of the driven equipment.Q: Can this motor run forward and reverse?A: Yes. The A8R310M is listed as reversible, so it can provide rotation in either direction when installed with the appropriate pneumatic controls.Q: What air supply does the A8R310M require?A: The catalog lists a 1/2″ NPTF air inlet and 112 SCFM in the model table. The air compressor, piping, valves, and FRL should be sized to maintain adequate airflow at the motor during loaded operation.Q: Is this motor a direct replacement for an electric motor?A: It may be used in place of an electric motor when the machines speed, torque, mounting, shaft connection, air supply, and control requirements match. Final fit should be confirmed against the equipment design 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;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”; 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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