Ingersoll Rand 7811-1B Reversible Air Power Motor | 0.70 HP | 250 RPM | 54 (ft-lbs) Stall Torque | Double Gear Reduction

Description

Ingersoll Rand 7811-1B Reversible Air Power Motor is engineered to provide dependable pneumatic rotary power for industrial applications requiring maximum output torque with controlled low-speed operation and bidirectional capability. Delivering 0.70 HP with a free speed of 250 RPM, this air motor incorporates a double gear reduction that efficiently multiplies torque while reducing output speed. Its reversible configuration enables clockwise and counterclockwise operation, making it an excellent choice for OEM machinery, industrial processing systems, automated production equipment, material handling applications, and other compressed-air powered equipment requiring reliable directional control.The 7811-1B develops a stall torque of 54.00 lb-ft, representing the maximum torque produced when the output shaft is prevented from rotating. The double-stage gear reduction delivers substantial rotary force while maintaining controlled low-speed performance, making this motor suitable for demanding industrial applications where both reversing capability and high torque are essential.Type: Air Power Motor | Model: 7811-1B | Rotation: Reversible | Gear Reduction: Double Gear Reduction | Power: 0.70 HP | Free Speed: 250 RPM | Stall Torque: 54.00 lb-ftFeatures:Reversible air motor provides dependable clockwise and counterclockwise pneumatic rotary operation.Double gear reduction significantly increases output torque while reducing operating speed.0.70 HP output supports demanding pneumatic drive applications.250 RPM free speed is ideal for applications requiring slow, controlled rotary motion with high torque.54.00 lb-ft stall torque provides a manufacturer-published reference for evaluating maximum torque capability.Compact pneumatic motor design integrates easily into OEM machinery and industrial equipment.Compressed-air operation eliminates the need for electrical power at the motor, making it suitable for facilities utilizing centralized pneumatic systems.Made in USA: Applications:OEM machinery requiring reversible pneumatic rotary power.Automated manufacturing and production equipment.Industrial processing and assembly systems.Material handling, conveyor, indexing, and drive applications requiring high output torque.Replacement applications where the published motor specifications match the original equipment.FAQs:Q: Is the Ingersoll Rand 7811-1B reversible?A: Yes. This model is designed to operate in both clockwise and counterclockwise directions for applications requiring bidirectional shaft rotation.Q: What is the advantage of double gear reduction?A: Double gear reduction uses two reduction stages to substantially lower output speed while increasing available output torque, making it ideal for demanding industrial applications requiring slow, controlled, high-torque performance.Q: What is the rated free speed?A: The manufacturer specifies a free speed of 250 RPM.Q: What does the stall torque rating represent?A: Stall torque is the maximum torque the motor develops when the output shaft is prevented from rotating under load.Q: What should be verified before installation?A: Confirm horsepower, free speed, rotation direction, gear reduction, shaft dimensions, mounting arrangement, and compressed-air requirements using the Ingersoll Rand Air Motor Catalog before installation. .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:100%;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 4px;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 4px;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:900px){ .spec-table{font-size:11px} .spec-table th{font-size:10px;padding:7px 3px} .spec-table td{padding:6px 3px} } @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 SpecificationsSKUSpindleR.P.M.TorqueAir Consumption at Free SpeedSound Level at Free SpeedWeightGear ReductionFree SpeedLoad Speed at Max. HpStallOutputSCFML/slbskg(ft-lbs)Nm(ft-lbs)NmdB(A)Non-Reversible – 0.85 HP7800-1B1/2″ Keyed18,0009,0001.001.40.500.6841.719.7784.241.91Single7801-1B1/2″ Keyed4,6002,4004.005.51.862.541.719.7784.241.91Single7802-1B1/2″ Keyed2,5001,3007.5010.33.434.741.719.7784.241.91Single7803-1B1/2″ Keyed1,20060016.0021.97.4410.241.719.7785.172.33Double7804-1B1/2″ Keyed65032030.0041.213.9519.141.719.7785.172.33Double7805-1B1/2″ Keyed35017055.0075.526.2536.041.719.7785.172.33Double7812-1B1/2″-20 Thd.35017055.0075.526.2536.041.719.7785.172.33Double7813-1B1/2″-20 Thd.65032030.0041.213.9519.141.719.7785.172.33Double7814-1B1/2″-20 Thd.18,0009,0001.001.40.500.6841.719.7784.241.91Single7815-1B1/2″-20 Thd.1,20060016.0021.97.4410.241.719.7785.172.33Double7816-1B1/2″-20 Thd.4,6002,4004.005.51.862.541.719.7784.241.91Single7817-1B1/2″-20 Thd.2,5001,3007.5010.33.434.741.719.7784.241.91SingleReversible – 0.70 HP7806-1B1/2″ Keyed13,5007,0001.001.40.520.7137.317.685*4.361.96Single7807-1B1/2″ Keyed3,4001,8004.005.52.042.837.317.685*4.361.96Single7808-1B1/2″ Keyed1,8001,0007.4010.23.675.037.317.685*4.361.96Single7809-1B1/2″ Keyed85045015.5021.38.1611.237.317.685*5.672.55Double7810-1B1/2″ Keyed45024029.0039.815.3021.037.317.685*5.672.55Double7811-1B1/2″ Keyed25013054.0074.028.2038.737.317.685*5.672.55Double (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)