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Series
D8.602

Hydro-pneumatic pump units

for single and double acting cylinders
max. operating pressure 500 bar
Hydro-pneumatic pump units
Downloads
Catalogue sheet
DEENFRESIT
Operating instructions
Information Series
Description
D 8.602 Hydro-pneumatic pump units

Application
The hydro-pneumatic pump unit is particularly suitable for smaller hydraulic clamping and assembly fixtures with single or double-acting hydraulic elements.


Description
Single-acting version
The hydro-pneumatic pump unit is manually operated. Only by operating the pedal the fixture will be clamped or unclamped. The pump delivers oil as long as the desired operating pressure is obtained. Air pressure is adjusted by a pneumatic service unit. Oil pressure is maintained by an integrated check valve. The pump does not automatically supply oil in case of leaks!

Double-acting version
By pushing the pedal, the connected double-acting hydraulic cylinders are extended or retracted according to the position of the manual 4/3 directional control valve. The pedal has to be pushed as long as the cylinders are in its final position and the desired oil pressure is obtained. After release of the pedal, the pump does not re-deliver in case of pressure drop on the oil side! The pedal can be locked by the laterally-arranged pin with the description “PUSH INTO LOCK”, thereby the pump is continuously supplied with air. In this case the cylinders are exclusively activated by the 4/3 directional manual control valve. Small leaks are compensated by the pump and the oil pressure is maintained constantly.


Important note
For permanent industrial use we recommend the hydro-pneumatic pump as per data sheet D8.600.

Products (2)
type
max. operating pressure [bar]
500 (2)
operation
manual with foot pedal (2)
max. flow rate [l/min]
0.85 (2)
oil volume of the reservoir [l]
2.5 (2)
usable oil volume [l]
2.1 (2)
Item no. CAD datatypemax. operating pressure [bar]operationmax. flow rate [l/min]
Item no.
8601211
CAD data
/
type
single acting
max. operating pressure [bar]
500
operation
manual with foot pedal
max. flow rate [l/min]
0.85
Properties
Item no.
8601221
CAD data
/
type
double acting
max. operating pressure [bar]
500
operation
manual with foot pedal
max. flow rate [l/min]
0.85
Properties
Item no.
8601211
type
single acting
max. operating pressure [bar]
500
operation
manual with foot pedal
max. flow rate [l/min]
0.85
oil volume of the reservoir [l]
2.5
usable oil volume [l]
2.1
Item no.
8601221
type
double acting
max. operating pressure [bar]
500
operation
manual with foot pedal
max. flow rate [l/min]
0.85
oil volume of the reservoir [l]
2.5
usable oil volume [l]
2.1
Accessories (3)
Item no. CAD data Description
Item no.
9208040
CAD data
Description
Pressure gauge union type A with edge sealing ring G1/4 - pipe Ø 8 mm max. 500 bar, as per data sheet F9.300
Item no.
9511005
CAD data
/
Description
Service unit - size 1/4 as per data sheet D8.602
Item no.
9846000
CAD data
Description
Pressure gauge 0 – 600 bar with glycerine filling with screw plug SW 9 ports G1/4 as per data sheet F9.300
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Please note: Our CAD data are generally simplified data and primarily reflect the outer contour and connections of the product (see also Terms of use). Please always refer to the relevant catalogue sheet for the exact dimensions with tolerances, in particular the information on mounting holes or attachments such as special clamps.