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Linear MD 5011 Medium Duty 1/2 HP Drawbar Commercial Door Operator

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This item is discontinued.
Please view this replacement item:
PowerMaster Model T Door Operator for Standard Lift Sectional Doors
This item is discontinued. Please view this replacement item:
Product Description

The MD5011 medium-duty 1/2 HP drawbar commercial door operator by Linear Pro Access is one of the best products you’ll find for operating your standard lift sectional doors. This product, which is not to exceed 10 cycles per hour and 75 cycles per day, is one of the finest products you can find for commercial and industrial applications. The door opener’s linear belt drive gives it exceptional power. For more information about the 115-volt Linear MD5011, see our "Questions" app below.


  • Item Number: MD5011
  • Drawbar Commercial Vehicular Door Operator with Solid State Controls by Linear Pro Access
  • 1/2 HP, 115-volt Medium duty drawbar commercial door operator (for standard lift sectional doors) with a 12-foot rail
  • Not to exceed 10 cycles per hour, 75 cycles per day
  • Single phase, rigid base permanent split capacitor motor
  • Motor overload protection
  • High Amp, inductive load rated relays
  • Solid state motor control circuitry with advance operational features standard
  • Class 2 (24-Volt) control circuit with OPEN, CLOSE, and STOP 3-button station
  • Accepts and monitors access alliance photoelectric devices
  • Accepts reversing edge input
  • Heavy gauge, powder-coated steel frame rails, and control box
  • V-belt primary reduction, full roller chain secondary reduction
  • All sprockets and pulleys pinned or keyed, solid steel drive shafts
  • Fully adjustable friction clutch
  • Manual door disconnect
  • Fully adjustable, internal, shaft driven limits
  • Optional solenoid brake
  • All steel frame
  • Full #65 roller chain drive
  • Quick-release door arm for manual door operation
  • Standard speed of about 11 inches per second
  • External terminals for single button (residential type) radio control
  • OPEN button (and single button) will automatically override down travel and reverse door to the fully open position
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Ask a Question
QUESTION: I have a 12 by 12 metal section door. What unit should I buy? by Tom N 9/20/2014
STAFF ANSWER: Give us a call and we will help you pick out the best operator for your needs. 800-783-6112 call between 8 am and 4 pm eastern time by Matthew O a
QUESTION: Is 3 button remote available? by Allan E 1/1/2014
STAFF ANSWER: Yes. Please call us at 440-366-6112 with a current remote in hand. by Matthew O a
QUESTION: Dear Sirs<br />I need 8 lifmaster draw bar opener for industrial medium application the doors are 14 foot tall wich medium duty door you recomend<br />thanks<br />Dan? by None N 12/7/2013
STAFF ANSWER: Please call us at 800-783-6112 so that we can assist you with choosing the best model for your application. by Matthew O a
Product Manual