6 High/Low hydraulics gear pumps are the ultimate 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. In particular these models offer the advantage of requiring lower power of the motor. The 1HL, 1PHL and 2HL High/Low hydraulic gear pumps are specifically designed double stage pumps with special integrated valves as shown in the hydraulic circuit diagram. specially designed for applications such as: waste compactors 8 log splitters 8 clamp mechanisms 8 crimping machines 8 metal forming machines, etc. 8 High/Low Multiple Hydraulic Gear Pumps For system operating conditions other than indicated and further details please contact - jbj Techniques Limited technical office, telephone: or email: 01737 767493 info@jbj.co.uk Flanges and shafts 1HL, 1PHL & 2HL Series Technical Features As ALP2, ALP2A, ALP2BK models ( ) ref. ALP catalogue 1 2 3 1) First stage high pressure 2) Second stage low pressure 3) Unloading valve As 1P, K1P, 1BK models ( ) ref. 1P catalogue First stage, low displacement, high pressure 4.5 cm³/rev to 8.3 cm³/rev P1 = 250 bar 1.1 cm³/rev to 3.2 cm³/rev P1 = 230 bar 1.4 cm³/rev to 4.1 cm³/rev P1 = 250 bar Second stage, high displacement, low pressure 9.6 cm³/rev to 35.2 cm³/rev (Pressure set by unloading valve) 3.7 cm³/rev to 8.0 cm³/rev (Pressure set by unloading valve) 4.1 cm³/rev to 13.8 cm³/rev (Pressure set by unloading valve) Unloading valve Standard setting 50 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 D Common inlet. Common outlet. Side ports code FG Common inlet. Common outlet. Side ports code FG; FA As ALP1; ALP1A; ALP1AQ models ( ) ref. ALP catalogue 2HL SERIES 1PHL SERIES 1HL SERIES www.jbj.co.uk/high-low-gear-pumps.html #DriveLineHarmony
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