High/Low Multiple Gear Pumps

ideal pump for applications which require a fast approach and/or return of the actuator at low loads and slow motion of the actuator at high loads.

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In particular these models offer the advantage of requiring lower power of the motor.

The Marzocchi 1HL, 1PHL and 2HL High/Low hydraulic gear pumps are special double stage pumps with special integrated valves as shown in the hydraulic circuit diagram.

specially designed for applications such as:

          >> waste compactors
          >> log splitters
          >> clamp mechanisms
          >> crimping machines
          >> metal forming machines, etc.

1) First stage high pressure
2) Second stage low pressure
3) Unloading valve

Technical
Features

1HL SERIES

1PHL SERIES

2HL SERIES

First stage, low
displacement, high pressure

1.4 cm³/rev to 4.1 cm³/rev
P1 = 250 bar

1.1 cm³/rev to 3.2 cm³/rev
P1 = 230 bar

4.5 cm³/rev to 8.3 cm³/rev
P1 = 250 bar

Second stage, high displacement,
low pressure

 4.1 cm³/rev to 13.8 cm³/rev
(Pressure set by unloading valve)		 3.7 cm³/rev to 8.0 cm³/rev
(Pressure set by unloading valve)		 9.6 cm³/rev to 35.2 cm³/rev
(Pressure set by unloading valve)

Unloading valve

Standard setting 30 bar

Standard setting 30 bar

Standard setting 30 bar

RPM pump range

1000 rpm to 3500 rpm

1000 rpm to 3500 rpm

1000 rpm to 3500 rpm

Ports

Common inlet.
Common outlet.
Side ports code FG; FA

Common inlet.
Common outlet.
Side ports code FG

Common inlet.
Common outlet.
Side ports code D

Flanges and shafts

As ALP1; ALP1A;
ALP1AQ models
(ref. ALP catalogue)

As 1P, K1P,
1BK models
(ref. 1P catalogue)

As ALP2, ALP2A,
ALP2BK models
(ref. ALP catalogue)

For further details contact the
jbj Techniques Ltd technical office    telephone: 01737 767493 or email: info@jbj.co.uk

Detail for Marzocchi range in general


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E. & O. E., Disclaimer: Information throughout this web-site relevant to design, materials and/or specifications are subject to change without notice and liability therefore.