Hydraulic Backstop Cylinders

Description

Hydraulic backstop cylinders are used on lattice boom cranes as a hydraulic means for preventing the boom from toppling backwards. In the final position of the jib (almost vertical), the cylinder is forcibly in-stroked and thereby builds up the necessary pressure to push the jib back again. They are therefore Category A safety components. A cylinder failure would result in the crane overturning. To accommodate the enormous mechanical forces, our hydro-storage cylinders are manufactured exclusively from high-strength steels.

Advantages

  • Very reliable anti-leakage features
  • Visually appealing and robust construction
  • For use under the harshest conditions
  • Low-temperature service
  • Good cost-effectiveness for the customer

Technical Data

Rod diameter
mm
Stroke length
mm
Operating pressure
bar
Gas volume, max.
Liter
120…260 400 370 28

The above details are guideline values taken from previously developed products. If your requirements do not fit into this framework, we will find the best solution for your application.

Models

  • Single-acting cylinder
  • Nitrogen storage integrated into the rod
  • With optional version for low-temperature service
  • Closed system
  • Rod double-hard-chrome-plated to size or nickel-chrome plated

Applications

  • Lattice boom cranes