High Efficiency Closed-Loop Circuit Hydraulic Pumps for Concrete
Mixer
Closed hydraulic pumps product introduction:
The hydraulic piston pump of the mixer truck consist of closed
hydraulic transmission system. The engine power in mixer is
transferred to the hydraulic pump by the transmission shaft, and
the hydraulic pump transmits the hydraulic energy to the hydraulic
motor, which drives the reducer to drive the mixing tank, so as to
realize the function of loading, mixing and unloading.
Our hydraulic piston pumps are axial flow variable displacement.
High efficiency hydraulic piston pumps main features:
1. High efficiency, durable, robust design meets the demands of
harsh work conditions for applications in mixer truck.
2. Mixer truck hydraulic pumps has swash plate structure.
3. Be Suitable for closed-loop circuit system of mixer hydraulic
pump.
4. Hydraulic piston pumps have manual servo and hydraulic variable
control mode.
5. Hydraulic pumps are variable displacement pumps with a charging
oil pump.
Hydraulic piston pumps technical specifications:
| 20 series PV hydraulic pump and MF hydraulic motor | 20 | 21 | 22 | 23 |
| Displacement | Max displacement | ml/r | 33.3 | 51.6 | 69.8 | 89.0 |
| Speed | Max continuous working speed
(Full load condition) | r/min | 3500 | 3500 | 3200 | 3200 |
| Rated speed | r/min | 2500 |
| Min continuous working speed | r/min | 500 |
| Pressure | Rated working pressure | Mpa | 35 |
| Max working pressure (transient) | Mpa | 42 |
| Continuous working pressure | Mpa | 30 |
| Allowable shell pressure (Absolute) | Mpa | Constant0.25, Peak value0.5 |
| Torque | Continuous output torque
(Under continuous working pressure) | Nm | 162.3 | 252.3 | 342.6 | 432.9 |
| Max output torque | Nm | 227 | 353 | 480 | 606 |
| Power | Continuous output power | KW | 45 | 79 | 107 | 139 |
| Max power | KW | 62 | 95 | 114 | 150 |
| Temperature | Allowable shell temperature | ℃ | 80 |
| Max working temperature of oil tank | ℃ | 70 |
| Weight | PV series hydraulic pump hydraulic oil emptying | kg | 45 | 53 | 63 | 78 |
PV series hydraulic motor hydraulic oil emptying | kg | 30 | 34 | 40 | 47 |
Company service of variable piston pumps:
Quick response within 24 hours.
Provide technical guidance.
Help customer solve hydraulic confusion.
Excellent after-sale service.
100% factory testing before shipment.
Preferential factory price, short delivery time.
Hydraulic oil notice of hydraulic piston pumps:
Hydraulic system pollution will affect the normal operation of
concrete mixer truck at any time, and affect the service life of
hydraulic piston pumps, serious damage to hydraulic pump motor, so
it is very important for the hydraulic system.
Oil change and oil filter replacement:
1. 500 working hours for first run.
2. Replace every 1500 working hours from now on, but at least once
a year.
3. Note: When changing oil, replace hydraulic filter element at the
same time.
Tags: closed hydraulic pump, high efficiency hydraulic pump,
hydraulic pump for concrete mixer
