L90 Series (Linear Spring) Loading Arm Counterbalance

OPW Engineered Systems L90 Series Counterbalance has been designed for loading arms that require higher spring loads to accommodate longer reaches and additional equipment. The innovative linear spring design does not require the pneumatic system that is typical for loading arms that have a longer reach or additional weight from attachments. Because all of the calibrations done on the L90 are completed at the back of the spring, the operator is never placed in harms way, and a simple turn of the adjusting bolt provides finite adjustments to tune the loading arm to the desired balance point.


  • Safe Adjustment – All adjustments are made from back of the spring. Operator is never in harms way
  • Easy, Precise Adjustment – A simple turn of adjusting bolt provides finite adjustment to tune your loading arm to desired balance point
  • No Special Tools Required – Standard Socket Wrench
  • Wide Range of Motion – Up to 110° of motion (70° up and 40° down)
  • Stable Balancing – Through the entire range of motion
  • Safe, Robust Design – Tested under full-load conditions for over 100,000 cycles with no degradation in performance


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