{"title":"PowerMaster Jackshaft Operators","description":"\u003ch3\u003ePowerMaster Jackshaft Operators\u003c\/h3\u003e\n\u003cp\u003eJackshaft operators turn the torsion shaft on sectional doors and the drive shaft on steel rolling doors and grilles to open and close the doors.\u003c\/p\u003e\n\u003cp\u003eOn sectional doors the operators are mounted at either end of the torsion shaft, or they are centered above the door. When centered above the door, the drive shaft is either coupled to the torsion shaft, or it is mounted above the torsion shaft and the operator turns the door shaft using a chain and sprockets. These operators can be used on all three types of track systems: standard horizontal lift, which go straight back like most residential garage doors, high lift, which go up and then back, and vertical lift, which goes straight up. Check out our\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.youtube.com\/user\/DDMGarageDoors\"\u003eYoutube channel\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003efor garage door tutorials.\u003c\/p\u003e\n\u003cp\u003eOn steel rolling doors one end is the winding end which anchors the spring tension. The other end is the drive end with the drive shaft that the operator turns. This drive shaft can be at either end of the door. The operator is usually mounted on the side of the door and below the drive shaft. It raises and lowers the door using a chain and sprockets. Because rolling doors have heavy end plates, brackets are often added to the end plate to allow mounting the operator to the front or on top of the coiled curtain.\u003c\/p\u003e\n\u003cp\u003eMost jackshaft operators often come with hoists. In the event of motor failure the door can be operated by hand or by pulling the chain.\u003c\/p\u003e\n\u003ch3\u003eJackshaft Operators on Standard Lift Doors\u003c\/h3\u003e\n\u003cp\u003eWe do not recommend using Jackshaft operators on lighter doors weighing less than 500 pounds and which have standard lift tracks because the operator turns the shaft and the door has to roll as the motor releases tension on the cables. Any obstruction to the free travel of the door in the tracks transforms the door into a guillotine. Obstructions include dry, worn or missing rollers, bent track, loose door or track hardware or weather seal, and anything else that is temporarily placed in the path of the door. Drawbar operators are always the safer option and they should be chosen for standard lift doors unless space limitations prohibit installation.\u003c\/p\u003e\n\u003cp\u003eIf your application requires a jackshaft operator, we recommend raising the rear ends of the horizontal tracks at least a foot. If that is not possible, we recommend installing pusher springs to help get the door start closing from the open position. We also recommend safety bottom fixtures to help keep the cables on the drums. Whenever servicing one of these doors always check to make sure the cables stay on the drums as the door starts to close.\u003c\/p\u003e\n\u003cp\u003eThe jackshaft operator is much easier to install, and there is less wire to run, but you must heed the liability issues and make whatever changes are necessary.\u003c\/p\u003e\n\u003ch3\u003eSelecting an Operator\u003c\/h3\u003e\n\u003cp\u003eThe simplest criteria for selecting an operator is to replace like with like, unless you had problems with your previous operator that you think may not have had the correct operator.\u003c\/p\u003e\n\u003cp\u003eIf you are not sure you had the correct operator, or if this is a new installation, here is what you need to consider.\u003c\/p\u003e\n\u003cp\u003eFirst, determine the type of system - jackshaft or drawbar. If it is a jackshaft type, do you need a chain for operating the door if there is a power failure? If so you would need a hoist operator.\u003c\/p\u003e\n\u003cp\u003eSecond, determine the voltage. Check to see what is in the building. If you have a choice, notice the lower voltage operators cost less, but they don’t work as efficiently, and they tend to have more problems than the higher voltage three phase operators.\u003c\/p\u003e\n\u003cp\u003eThird is horsepower, which you can determine by checking the\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/ddmgaragedoors.com\/parts\/horsepower-selection-guide.pdf\" target=\"_blank\"\u003ehorsepower chart.\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003eFourth is the door height. If you need a drawbar system, you’ll need to choose an operator with a rail long enough to accommodate the door height. On hoist systems the door height is needed to determine the correct chain length.\u003c\/p\u003e\n\u003cp\u003eFifth, for jackshaft operators, you need to provide the door shaft diameter and key size for the drive sprocket. Most sectional doors have one inch outside diameter shafts with quarter inch key way grooves in the shaft. On steel rolling doors the outside diameters of the drive shafts are as much as 1 ½,” and the keyway may be as much as 3\/8” wide.\u003c\/p\u003e\n\u003cp\u003eSixth, also for jackshaft operators, determine the side on which you will be installing the operator. If you are installing the operator on a steel rolling door, let us know which mounting configuration you will be using and whether you need a mounting bracket.\u003c\/p\u003e\n\u003cp\u003eLast, let us know of any special situations.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSpace Limitations. For trolley operators the drawbar needs at least 3” between the ceiling and the top of the door when it is at its highest point of travel. Most jackshaft operators need at least 12” of side room.\u003c\/li\u003e\n\u003cli\u003eEyes. Eyes come standard with openers now. For safety, these are to be mounted within six inches of the floor. If vehicles are parking under the door, you may want a second set of eyes crossing the opening at a 45 degree angle.\u003c\/li\u003e\n\u003cli\u003eCenter-Mount Operators. If you are centering an operator above the door, check to make sure there is enough space above the door to mount the operator. Also, if you are modifying a torsion assembly to couple an operator to the shaft instead of using a sprocket, you’ll need one or two couplers.\u003c\/li\u003e\n\u003cli\u003eInternational Sales. If you are ordering operators for use in countries outside the United States you may need 50 cycle motors. Let us know, as the 60 cycle motors used in the states will not work.\u003c\/li\u003e\n\u003cli\u003eExplosion Proof. Some volatile environments require sealed motors and electrical components.\u003c\/li\u003e\n\u003cli\u003eWater Proof. Some operators need to be mounted outside and many operate car wash doors. These are subject to extreme environmental conditions. Options for water resistant operators are available on many of the PowerMaster operators.\u003c\/li\u003e\n\u003cli\u003eSpecial Accessories. Let us know if you need radio controls, keyed outside switches, treadle hoses and switches, card entry systems, pull switches, or Miller Edge sensors.\u003c\/li\u003e\n\u003c\/ul\u003e","products":[{"product_id":"ocom-j71-pm","title":"PowerMaster J-71 Jackshaft Operator, 3\/4 HP, 115\/230V 1PH","description":"PowerMaster J-71 Jackshaft Operator, 3\/4 HP, 115\/230V 1PH\u003cbr\u003e\u003cbr\u003ePowerMaster Model J operators are designed for use on Sectional Doors with Standard Lift, High Lift or Vertical Lift, as well as Rolling Service Doors and Grilles.\u003cul\u003e\n\u003cli\u003eStarting Torque Motor with Full Overload Protection.\u003c\/li\u003e\n\u003cli\u003e Solid State Circuitry with Power and Program Feedback LEDs.\u003c\/li\u003e\n\u003cli\u003e Onboard Open\/Close\/Stop buttons for service and adjustments.\u003c\/li\u003e\n\u003cli\u003e Terminals labeled and grouped by function.\u003c\/li\u003e\n\u003cli\u003e Auto-Detect monitored photo beam for simplified installation.\u003c\/li\u003e\n\u003cli\u003e Selectable Operating modes B2, C2, D1, E2, T, TS.\u003c\/li\u003e\n\u003cli\u003e Field adjustable built in functions including: timer to close, mid-stop, delay on reverse, lock bar sensing, maximum run time, etc.\u003c\/li\u003e\n\u003cli\u003e Heavy Duty V-Belt and Chain Reduction, Mechanically Self Locking.\u003c\/li\u003e\n\u003cli\u003e Heavy Duty #50 Roller Chain and driven sprocket Included.\u003c\/li\u003e\n\u003cli\u003e Adjustable Torque Limiting Clutch.\u003c\/li\u003e\n\u003cli\u003e Floor Level Disconnect for Manual Operation.\u003c\/li\u003e\n\u003c\/ul\u003eNote:  Over the Road freight charges apply.\u003cbr\u003e\u003cbr\u003e IMPORTANT: Due to supply chain shortages we currently do not offer quantity discounts, and for some of our products we are limiting the quantities that may be purchased.","brand":"V.E. Power Door Co (PowerMaster)","offers":[{"title":"Default Title","offer_id":51161676185920,"sku":"OCOM-J71-PM","price":2948.4,"currency_code":"USD","in_stock":true}]},{"product_id":"ocom-rj71-pm","title":"PowerMaster RJ-71 Jackshaft Release Operator, 3\/4 HP, 115\/230V 1PH","description":"PowerMaster RJ-71 Jackshaft Release Operator, 3\/4 HP, 115\/230V 1PH\u003cbr\u003e\u003cbr\u003ePowerMaster Model RJ operators are designed to allow emergency egress capability and lock bar sensing on rolling service doors and grilles.\u003cul\u003e\n\u003cli\u003eHigh Starting Torque Motor with Full Overload Protection (Removable without affecting limit switch settings).\u003c\/li\u003e\n\u003cli\u003e Solid State Circuitry with Power and Program Feedback LEDs.\u003c\/li\u003e\n\u003cli\u003e Onboard Open\/Close\/Stop buttons for service and adjustments.\u003c\/li\u003e\n\u003cli\u003e Includes Panic Release Handle.\u003c\/li\u003e\n\u003cli\u003e Terminals labeled and grouped by function.\u003c\/li\u003e\n\u003cli\u003e Auto-Detect monitored photo beam for simplified installation.\u003c\/li\u003e\n\u003cli\u003e Selectable Operating modes B2, C2, D1, E2, T, TS.\u003c\/li\u003e\n\u003cli\u003e Field adjustable built in functions including: timer to close, mid-stop, delay on reverse, lock bar sensing, maximum run time, etc.\u003c\/li\u003e\n\u003cli\u003e Heavy Duty V-Belt and Chain Reduction, Mechanically Self Locking.\u003c\/li\u003e\n\u003cli\u003e Heavy Duty #50 Roller Chain and driven sprocket Included.\u003c\/li\u003e\n\u003cli\u003e Adjustable Torque Limiting Clutch.\u003c\/li\u003e\n\u003cli\u003e Floor Level Disconnect for manual operation.\u003c\/li\u003e\n\u003c\/ul\u003eNote:  Over the Road freight charges apply.\u003cbr\u003e\u003cbr\u003e IMPORTANT: Due to supply chain shortages we currently do not offer quantity discounts, and for some of our products we are limiting the quantities that may be purchased.","brand":"V.E. Power Door Co (PowerMaster)","offers":[{"title":"Default Title","offer_id":51161676251456,"sku":"OCOM-RJ71-PM","price":3175.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/0013\/1904\/files\/PM-RJ.jpg?v=1782855451"},{"product_id":"ocom-gj54-pm","title":"PowerMaster GJ-54 Gear Reduced Jackshaft Operator, 1\/2 HP, 230\/460V 3PH","description":"PowerMaster GJ-54 Gear Reduced Jackshaft Operator, 1\/2 HP, 230\/460V 3PH\u003cbr\u003e\u003cbr\u003ePowerMaster Model GJ operators are designed for use on rolling service doors, rolling grilles, and counter shutters.\u003cul\u003e\n\u003cli\u003e High Starting Torque Motor w\/full overload protection.\u003c\/li\u003e\n\u003cli\u003e Solid State Circuitry with Power and Program Feedback LEDs.\u003c\/li\u003e\n\u003cli\u003e Onboard Open\/Close\/Stop buttons for service and adjustments.\u003c\/li\u003e\n\u003cli\u003e Terminals labeled and grouped by function.\u003c\/li\u003e\n\u003cli\u003e Auto-Detect monitored photo beam for simplified installation.\u003c\/li\u003e\n\u003cli\u003e Selectable Operating modes B2, C2, D1, E2, T, TS.\u003c\/li\u003e\n\u003cli\u003e Field adjustable built in functions including: timer to close, mid-stop, delay on reverse, lock bar sensing, maximum run time, etc.\u003c\/li\u003e\n\u003cli\u003e Floor level disconnect.\u003c\/li\u003e\n\u003cli\u003e Heavy Duty Worm Gear Reduction.\u003c\/li\u003e\n\u003cli\u003e Heavy Duty #41 Roller Chain \u0026amp; Driven Sprocket for Final Drive Included.\u003c\/li\u003e\n\u003cli\u003e Adjustable Torque Limiting Clutch.\u003c\/li\u003e\n\u003cli\u003e Positive Chain Driven Rotary Limit Switches.\u003c\/li\u003e\n\u003c\/ul\u003eNote:  Over the Road freight charges apply.\u003cbr\u003e\u003cbr\u003e IMPORTANT: Due to supply chain shortages we currently do not offer quantity discounts, and for some of our products we are limiting the quantities that may be purchased.","brand":"V.E. Power Door Co (PowerMaster)","offers":[{"title":"Default Title","offer_id":51161676546368,"sku":"OCOM-GJ54-PM","price":3044.16,"currency_code":"USD","in_stock":true}]},{"product_id":"ocom-j54-pm","title":"PowerMaster J-54 Jackshaft Operator, 1\/2 HP, 230\/460V 3PH","description":"PowerMaster J-54 Jackshaft Operator, 1\/2 HP, 230\/460V 3PH\u003cbr\u003e\u003cbr\u003ePowerMaster Model J operators are designed for use on Sectional Doors with Standard Lift, High Lift or Vertical Lift, as well as Rolling Service Doors and Grilles.\u003cul\u003e\n\u003cli\u003eStarting Torque Motor with Full Overload Protection.\u003c\/li\u003e\n\u003cli\u003e Solid State Circuitry with Power and Program Feedback LEDs.\u003c\/li\u003e\n\u003cli\u003e Onboard Open\/Close\/Stop buttons for service and adjustments.\u003c\/li\u003e\n\u003cli\u003e Terminals labeled and grouped by function.\u003c\/li\u003e\n\u003cli\u003e Auto-Detect monitored photo beam for simplified installation.\u003c\/li\u003e\n\u003cli\u003e Selectable Operating modes B2, C2, D1, E2, T, TS.\u003c\/li\u003e\n\u003cli\u003e Field adjustable built in functions including: timer to close, mid-stop, delay on reverse, lock bar sensing, maximum run time, etc.\u003c\/li\u003e\n\u003cli\u003e Heavy Duty V-Belt and Chain Reduction, Mechanically Self Locking.\u003c\/li\u003e\n\u003cli\u003e Heavy Duty #50 Roller Chain and driven sprocket Included.\u003c\/li\u003e\n\u003cli\u003e Adjustable Torque Limiting Clutch.\u003c\/li\u003e\n\u003cli\u003e Floor Level Disconnect for Manual Operation.\u003c\/li\u003e\n\u003c\/ul\u003eNote:  Over the Road freight charges apply.\u003cbr\u003e\u003cbr\u003e IMPORTANT: Due to supply chain shortages we currently do not offer quantity discounts, and for some of our products we are limiting the quantities that may be purchased.","brand":"V.E. Power Door Co (PowerMaster)","offers":[{"title":"Default Title","offer_id":51161676644672,"sku":"OCOM-J54-PM","price":2595.6,"currency_code":"USD","in_stock":true}]},{"product_id":"ocom-dgj-pm","title":"PowerMaster D-GJ Gear Reduced Jackshaft w\/DC Motor \u0026 Battery Backup, 1\/2 HP, 115V 1PH","description":"PowerMaster D-GJ Gear Reduced Jackshaft w\/DC Motor \u0026amp; Battery Backup, 1\/2 HP, 115V 1PH\u003cul\u003e\n\u003cli\u003eBattery Back-up.\u003c\/li\u003e\n\u003cli\u003e576 watts (1\/2HP equivalent), 24 VDC motor.\u003c\/li\u003e\n\u003cli\u003e Continuous duty operation.\u003c\/li\u003e\n\u003cli\u003e Heavy Duty Worm Gear Reduction.\u003c\/li\u003e\n\u003cli\u003e Solid State Circuitry with Power and Program Feedback LEDs.\u003c\/li\u003e\n\u003cli\u003e Onboard Open\/Close\/Stop buttons for service and adjustments.\u003c\/li\u003e\n\u003cli\u003e Auto-Detect monitored photo beam for simplified installation.\u003c\/li\u003e\n\u003cli\u003e Selectable Operating modes B2, C2, D1, E2, T, TS.\u003c\/li\u003e\n\u003cli\u003e Field adjustable built-in functions.\u003c\/li\u003e\n\u003cli\u003e Floor level disconnect.\u003c\/li\u003e\n\u003cli\u003e Heavy Duty #41 Roller Chain \u0026amp; Driven Sprocket included.\u003c\/li\u003e\n\u003cli\u003e Built-in 3-button Control Station.\u003c\/li\u003e\n\u003cli\u003e Positive Chain Driven Rotary Limit Switches.\u003c\/li\u003e\n\u003c\/ul\u003eNote:  Over the Road freight charges apply.\u003cbr\u003e\u003cbr\u003e IMPORTANT: Due to supply chain shortages we currently do not offer quantity discounts, and for some of our products we are limiting the quantities that may be purchased.","brand":"V.E. Power Door Co (PowerMaster)","offers":[{"title":"Default Title","offer_id":51161676906816,"sku":"OCOM-DGJ-PM","price":4284.0,"currency_code":"USD","in_stock":true}]},{"product_id":"ocom-mj51-pm","title":"PowerMaster MJ-51 Medium Duty Jackshaft Operator, 1\/2 HP, 115V 1PH","description":"PowerMaster MJ-51 Medium Duty Jackshaft Operator, 1\/2 HP, 115V 1PH\u003cbr\u003e\u003cbr\u003ePowerMaster Model MJ operators are designed for use on standard lift sectional doors, rolling service doors and grilles.\u003cul\u003e\n\u003cli\u003eLimit 10 cycles per hour.\u003c\/li\u003e\n\u003cli\u003e PSC Motor with Full Overload Protection.\u003c\/li\u003e\n\u003cli\u003e Solid State Circuitry with Power and Program Feedback LEDs.\u003c\/li\u003e\n\u003cli\u003e Onboard Open\/Close\/Stop buttons for service and adjustments.\u003c\/li\u003e\n\u003cli\u003e Terminals labeled and grouped by function.\u003c\/li\u003e\n\u003cli\u003e Auto-Detect monitored photo beam for simplified installation.\u003c\/li\u003e\n\u003cli\u003e Selectable Operating modes B2, C2, D1, E2, T, TS.\u003c\/li\u003e\n\u003cli\u003e Field adjustable built in functions including: timer to close, mid-stop, delay on reverse, lock bar sensing, maximum run time, etc.\u003c\/li\u003e\n\u003cli\u003e Heavy Duty V-Belt and Chain Reduction, Mechanically Self Locking.\u003c\/li\u003e\n\u003cli\u003e #41 Roller Chain and drive sprocket Included.\u003c\/li\u003e\n\u003cli\u003e Adjustable Torque Limiting Clutch.\u003c\/li\u003e\n\u003c\/ul\u003eNote:  Over the Road freight charges apply.\u003cbr\u003e\u003cbr\u003e IMPORTANT: Due to supply chain shortages we currently do not offer quantity discounts, and for some of our products we are limiting the quantities that may be purchased.","brand":"V.E. Power Door Co (PowerMaster)","offers":[{"title":"Default Title","offer_id":51161677857088,"sku":"OCOM-MJ51-PM","price":2106.72,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/0013\/1904\/files\/PM-MJ.jpg?v=1782855253"},{"product_id":"ocom-j74-pm","title":"PowerMaster J-74 Jackshaft Operator, 3\/4 HP, 230\/460V 3PH","description":"PowerMaster J-74 Jackshaft Operator, 3\/4 HP, 230\/460V 3PH\u003cbr\u003e\u003cbr\u003ePowerMaster Model J operators are designed for use on Sectional Doors with Standard Lift, High Lift or Vertical Lift, as well as Rolling Service Doors and Grilles.\u003cul\u003e\n\u003cli\u003eStarting Torque Motor with Full Overload Protection.\u003c\/li\u003e\n\u003cli\u003e Solid State Circuitry with Power and Program Feedback LEDs.\u003c\/li\u003e\n\u003cli\u003e Onboard Open\/Close\/Stop buttons for service and adjustments.\u003c\/li\u003e\n\u003cli\u003e Terminals labeled and grouped by function.\u003c\/li\u003e\n\u003cli\u003e Auto-Detect monitored photo beam for simplified installation.\u003c\/li\u003e\n\u003cli\u003e Selectable Operating modes B2, C2, D1, E2, T, TS.\u003c\/li\u003e\n\u003cli\u003e Field adjustable built in functions including: timer to close, mid-stop, delay on reverse, lock bar sensing, maximum run time, etc.\u003c\/li\u003e\n\u003cli\u003e Heavy Duty V-Belt and Chain Reduction, Mechanically Self Locking.\u003c\/li\u003e\n\u003cli\u003e Heavy Duty #50 Roller Chain and driven sprocket Included.\u003c\/li\u003e\n\u003cli\u003e Adjustable Torque Limiting Clutch.\u003c\/li\u003e\n\u003cli\u003e Floor Level Disconnect for Manual Operation.\u003c\/li\u003e\n\u003c\/ul\u003eNote:  Over the Road freight charges apply.\u003cbr\u003e\u003cbr\u003e IMPORTANT: Due to supply chain shortages we currently do not offer quantity discounts, and for some of our products we are limiting the quantities that may be purchased.","brand":"V.E. Power Door Co (PowerMaster)","offers":[{"title":"Default Title","offer_id":51161681559872,"sku":"OCOM-J74-PM","price":2998.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/0013\/1904\/files\/PM-J.jpg?v=1782855322"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/0013\/1904\/collections\/POWERMASTER-OPERATOR-H-51_3bfcc8d2-7bfe-47a0-a8f1-bd2c9e7e0857.jpg?v=1768249175","url":"https:\/\/shop.ddmgaragedoors.com\/collections\/powermaster-jackshaft-operators.oembed","provider":"DDM Garage Doors","version":"1.0","type":"link"}