Locking Collar Failsafe Low Height and Standard Height Single Acting Cylinders

55 TON – 573 TON Cylinders | Catalog Pages 14, 15

The HFG and HFL single acting failsafe lock ring cylinder ranges combines all the versatility and efficiency of hydraulic power with the safety of mechanical load support. Ideally suited for applications requiring sustained load holding for extended periods, such as bridge support work, the HFG and HFL ranges features a single acting, load return piston, threaded throughout its stroke length to suit the threaded mechanical load holding lock ring. Simply jack up the load, wind down the mechanical lock ring until it comes into contact with the cylinder body, release the hydraulic pressure and sustain the load mechanically. All models are suitable for vertical lifting only and are supplied with tilting saddles as standard to reduce the risk of side loading the cylinder.

• Anti-extrusion seals for improved performance at high pressures
• Mechanical Locking Ring Allows Full Load Support after Removing All Hydraulic Pressure
• Load Return
• Working Pressure of 10,000 PSI
• HFL Low Height Models
• HFG Standard Height Models
• Customized and special design cylinders are available on request
• Nitrocarburized Piston For Excellent Corrosion Resistance
• Overstroke Restrictor Port to Over Extension of Cylinder
• Aluminum Lightweight Options Available