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

The hydraulic actuator HA-1S1 is extremely small - only 50 mm in height. Still, using, for example, any of OK-VISE D-series clamps, it can create a 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 alsobe  used in 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 the total height is then 66 mm. This module HA-1SR1 is shown in the photo.
(The 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