Commercial / Industrial continuous duty belt drive Jackshaft complete with load sensing and emergency egress capability

Designed for use on commercial / industrial sectional doors with high or vertical lift track and small rolling grilles.



  • 24V class 2 control circuit with 40VA transformer to protect against short circuit
  • External radio control terminal strip
  • Low friction powder metal limit cam nuts with fully adjustable rotary type
    limit switch assembly
  • Three button open-close-stop control station Nema-1
  • Continuous duty industrial motor with overload protection
  • Motor removable without affecting limit settings
  • Heavy duty 5LV-belt
  • #41 roller chain and sprockets on all internal drives
  • Adjustable friction clutch
  • Mechanical brake system
  • Solenoid brake (optional PRO-EJB)
  • #50 roller chain and sprockets on final drive
  • 3/4″ permanently lubricated and sealed ball bearings on pulley shaft
  • 1″ permanently lubricated and sealed bearings on final drive shaft
  • Emergency disconnect with electrical cut-out switch for manual operation
  • Internal load sensing feature that will detect a lock or jammed door and stop unit from operation
  • Provides for egress to allow for opening of a grill by manual operation or
    spring tension(optional egress device)
  • Left or right hand mounting
  • Baked on dark grey coat finish
  • Shipping weight of 95 lbs
Circuit options



  • Heavy duty reversing contactor with mechanical and electrical interlock incorporating the UL325(2010)interface module.
  • C2 factory wiring standard (constant pressure close)
  • B2 wiring can be field set by moving 1 jumper and installing Micanan monitored fail safe photo-eyes(supplied) or (optional) Micanan compatible monitored fail safe electric edge


  • Heavy duty reversing contactor with mechanical and electrical interlock.
    (Not available in US or other areas where UL325 (2010) is mandated)
  • C2 factory wiring standard, B2 wiring can be field set by moving 1 jumper.
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