The SCHAAF HDL Series is a high-capacity, compact air-hydraulic high-pressure unit, specially designed for industrial use.

• Low air pressure for extreme working pressures
• 1 bar air pressure = 425 bar hydraulic pressure
• 1 bar air pressure = 740 bar hydraulic pressure
• Rugged, compact and durable design
• Small dimensions
• Low weight
• Immediately ready for use, fully assembled and oil filled
• All components sealed leakproof
• No pressure loss even at 4000 bar
• Manufactured in high-quality materials
• Hardened, replaceable valve seats
• Pressure relief valve with internal tank return line
• Installed in rugged housing
• Low-maintenance operation
• Distributor block for up to four connections

The SCHAAF HDL Series 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)

All HDL 1000-4000 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.

HDL 1000-4000 are, of course, oil filled and ready for immediate use.

SCHAAF HDL 1000-4000 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.