The HHR double acting hollow piston cylinder range incorporates all of the design features of the HHS range with the added benefit of double acting design, which greatly enhances speed of operation and performance particularly in the longer length stroke options. Additionally a substantial hydraulic pulling force is available in the piston retraction mode of operation. Standard range models are featured here, however other stroke and tonnage options are available on request.

Hollow piston design for tooling, maintenance and tensioning applications
Nitrocarburised piston rod
Annular area overload protection valve
Low friction bearing surfaces
Anti-extrusion seals
Optional piston rod saddles
Collar thread protector supplied as standard
Customised and special design cylinders are available on request

Parameter Name	Parameter Value
Type	hydraulic
Technology	piston
Configuration	double-acting
Other characteristics	low-friction
Stroke (mm)	51 - 305
Force (N)	247 - 247
Pressure	700 bar (10,152.6 psi)