A4vtg collection  CZPT piston Pump 

 
Brueninghaus Hydromatik CZPT A4VTG pump
 
Concrete mixer hydraulic piston pump A4VTG71, A4VGT90

Closed circuit
Series 32
Sizes seventy one, 90
Nominal stress 5800 psi (400 bar)
Optimum force 6500 psi (450 bar)
Handle unit: (HW) Proportional control hydraulic, mechanical servo, hexagon shaft with lever to the rear.
(EP) Proportional handle electric powered, with emergency actuation and spring return.
 
For the drum generate in cellular concrete mixers A4VTG071, A4VGT090 sequence.
-Variable axial piston pump of swash plate design and style for hydrostatic drives in shut circuit
-The circulation is proportional to the travel speed and displacement.
-The circulation raises as the angle of the swash plate is altered from zero to its greatest value.
-Flow path modifications efficiently when the swash plate is moved via the neutral situation.
-Two force-reduction valves are provided on the substantial force ports to shield the hydrostatic transmission (pump and motor) from overload.
-The high-pressure reduction valves also purpose as increase valves.
-The integrated enhance pump acts as a feed pump and manage force source.
-The greatest increase stress is constrained by a built-in increase force-aid valve.
-Tapered shaft choice for immediate push shaft yoke set up. 

Complex Data 
Table of values (theoretical values, with out effectiveness and tolerances values rounded)