1. Hydraulics - Pneumatics
  2. Pump
  3. Hydraulic screw pump
  4. ANDREAS MAIER GmbH & Co. KG (AMF)

Hydraulic screw pump 6901
steel

hydraulic screw pump
hydraulic screw pump
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Characteristics

Type
screw
Material
steel
Pressure

350 bar
(5,076 psi)

Description

Housing from steel, hardened and burnished. Threaded spindle hardened and burnished. Screw pump no. 6901-20 is supplied with 2 grooved nuts. Oil supply via threaded port. The screw pump is particularily suitable to operate small clamping fixtures. For an enclosed circuit the following has to be considered: The hydraulic clamping elements connected to the screw pump have to be hermetically tight. Due to possible leakage of the clamping cylinders during stroke movement and the compressibility of oil (1% at 140 bar), the stroke volume of the screw pump shall be used up to 70% only. The compressibility is being increased considerabely by air content in the oil. Therefore the hydraulic system has to be carefully purged of air. An air bleed screw at the highest position is a necessity. After returing the spindle of the pump, oil must be refilled at this spot. No air pocket should arise in the hydraulic system, which cannot be purged. A precise pressure control is possible by a manometer only. An electric pressure switch enables a pressure monitoring too. A pressure limiting valve is not suitable. Operating the threaded spindle by a torque wrench is possible. However the pressure should also be checked by a gauge. For the built-in version the mounting torque has to be observed.

Exhibitions

Meet this supplier at the following exhibition(s):

Global Industrie 2024
Global Industrie 2024

25-28 Mar 2024 París Villepinte (France)

  • More information
    CCMT 2024
    CCMT 2024

    8-12 Apr 2024 Shanghai (China)

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    *Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.