HDE 4000
Electrohydraulic high-pressure pump unit for
high flow rates and outputs up to 4000 bar



The SCHAAF HDE 4000 Power Pack is a high-capacity, compact electrohydraulic high-pressure pump unit, specially designed for industrial use. Consequently, it is a reliable high-pressure generator:

  • Rugged, compact and durable design
  • Long service life
  • Crane hitch system
  • Immediately ready for use, fully assembled and oil filled
  • All components sealed leakproof
  • Adjustable pressure limitation valve
  • Large oil-filler neck with filter
  • Oil return filter
  • No pressure loss even at 4000 bar
  • Hardened, replaceable valve seats
  • Pressure relief valve with internal tank return line
  • Up to 8 connections possible for 4000 bar
  • Different supply voltages possible


Areas of Application

The SCHAAF HDE 4000 is ideally suited for:

  • The use of bolt tensioners, hydraulic nuts, ExpaTen Bolts and EcoRolls
  • Tightening and loosening of oil press fits (e.g., gearwheels, flywheels, coupling hubs, roller bearings, hydraulic couplings and overload protection devices)


Quality Assurance

All HDE 4000 are checked for material quality, dimensional accuracy, correct functioning and load-resistance. During order execution, they are subject to continuous quality assurance measures and are supplied together with detailed technical documentation.


HDE 4000 are, of course, oil filled and ready for immediate use.

SCHAAF HDE 4000 are user-friendly, reliable, and manufactured in accordance with the highest level of technical know-how. Our highly-motivated staff would be pleased to train your personnel, in situ or at our works, in the general handling and operation of high-pressure equipment.