• Double acting
  • Single air drive head
  • Pressures to 1,000 bar (14,500 psi)
  • They are suitable for use in zone 1, category 2G/2D IIB TX explosion-proof areas (Temperature class depending on medium temperature).


Examples of application for the S...D Series hydraulic pumps include:


  • Lifting & Clamping: Hydraulic systems for lifting and shifting loads, lifting tables, aircraft jacking
  • Hydraulic applications: Clamping devices, punching & pin presses, chucks, actuation of cylinders
  • Presses: Cold isostatic presses, filter presses, hydraulic presses, pressure generation for presses and press overload protection
  • Tooling and Tightening: actuating cropping, crimping, cable shears and pipe bending tools, roller tensioning and torque wrenches
  • Lubrication systems


We specialise in custom System Design and manufacture to suit your requirements. You can see some of our range of systems in the below links:


Contact us for more information or let us size and design a system to suit your requirements.

Oil operation - S...D Series
General Information
Technical Data

S...D Pumps


S...D pumps are double acting, single air drive head type. They are characterized by the same features as the S series, but


  • Pumps come standard with side inlet, bottom inlet not available
  • They have less pulsations and deliver approx. 50% more flow than the single acting S pumps.
  • Maximum air drive pressure 10 bar (145 psi)
  • The unregulated pilot port on all S...D pumps not only provides better pressure control but is also the ideal place to install control instrumentation because of its small size, BSP 1/8".

Options for S Series


  • Special inlet and outlet ports (i. e. NPT): Order code: S35(D) – NPT
  • Special seal material to handle special fluids: Order code: See fluid compatibility guide
  • Air control unit for S series with filter pressure regulator, control pressure gauge and shut-off valve: Order code: S35(D) with C1.5
  • Other options available on request.