Rack ‘n Pinion® Strong Arm RP4500SATR

Rack ‘n Pinion® Strong Arm systems utilize rack and pinion technology for controlled side arm movement. A hydraulic cylinder moves a rack gear forward and backwards. The rack gear is mated with a pinion gear attached to the base of the pivot arms. This arrangement creates a mechanical advantage which provides continuous control over speed and precise synchronization of the pivot arms as they cover and uncover the container.  Look for the distinctive tombstone, a symbol of Pioneer's Rack 'n Pinion tarping system's industry-leading quality for over a decade.


Applications: Cable hoist roll-off trailers
Container style/size:  Up to 32 foot containers 
Standard tarp:  Heavy duty mesh

  • Tarping system with pivot assembly for consistently precise tarp movement
  • Adjustable gantry moves vertically from 60" to 96" (SATR)
  • Roller mounted on gantry, reducing stress on framework
  • Spring loaded roller assembly
  • Fixed length unbreakable pivot arms
  • Industry leading 5-year non-prorated warranty covers the entire system (excludes tarp)
  • Features Pioneer's distinctive tombstone


  • Fixed gantry
  • Covers containers up to 24' in length


  • Telescopic gantry
  • Covers containers up to 24' in length


  • Designed for trailers
  • Telescopic gantry
  • Covers containers up to 32' in length