Following hydraulic modules are available :

Hydraulic actuator HA-1S1

Files to download
Dimensions icon pdf
Installation icon pdf
STEP (3D)  

The hydraulic actuator HA-1S1 is extremely low - only 50 mm in height. Still, using, for example, any of OK-VISE D-series clamps, it can create 4.4 mm (2 x 2.2 mm) clamping stroke. Single acting hydraulic function ( with powerful return spring ) is simpliest to operate , but the actuator can also used in a double acting mode. If so, the return spring can also be removed.

  • Max pressure 350 bar, max force 1.7 metric tons
  • Two G 1/4 ports for clamping and two for unclamping

    ha 1s1

  • Metal plug to close extra ports
  • Push spring (for single acting operation)

Another model is equipped with rotation stop pins so that the piston can not rotate. This requires some extra height so total height is then 66 mm. This module HA-1SR1 is shown in the photo.
( Dotted line shows the standard model height 50 mm )


Piston area / pull (cm2) 6.7
Piston force (kN) at 250 bar / pull 17
  at 350 bar / pull 23
Clamp force (kN) using DK2-VT clamp in standard conditions
  at 250 bar / pull 12
  at 350 bar / pull 17

Hydraulic actuator HA-2S1

Files to download
STEP (3D)  
  • Test pressure 400 bar
  • Metal plug
  • Plastic plug
  • Rotation stop pins (high version only)HA 2S1 300x200
  • Push spring (for single acting operation)
Piston area/ pull (cm2)   3.8
Piston force (kN)    
  at 250 bar / pull  9.5
  at 350 bar / pull   13
Clamp force (kN) using BK2-VT clamp in standard conditions
   at 250 bar / pull  7.0
   at 350 bar / pull 


Download the brochure

core 2017 fixturing16