Wheat Harvester Hydraulic Drive System PV21 MF21 Hydraulic Pump Motor
Product Summary
Highland wheat harvester hydraulic drive system good stability Quick Detail: · Cast iron housing · Hydraulic components · Model PV21+MF21 · Power components of hydraulic systems · Higher efficiency · Net weight 69kg · Simple layout · Application wheat harvester · System Solutions · Work fast · Fully ...
Product Custom Attributes
Wheat Harvester Hydraulic Drive System
,Hydraulic Drive System 69kg
,PV21 MF21 Hydraulic Pump Motor
Basic Properties
Trading Properties
Product Description
Highland wheat harvester hydraulic drive system good stability
Quick Detail:
· Cast iron housing
· Hydraulic components
· Model PV21+MF21
· Power components of hydraulic systems
· Higher efficiency
· Net weight 69kg
· Simple layout
· Application wheat harvester
· System Solutions
· Work fast
· Fully replace imported products
· Patent certificate certification
· 1 year warranty
Highland PV21+MF21 Hydraulic Pumps Motors introduce
Highland Combine harvester hydraulic drive system strong hydraulic pumps are well engineered and easy to handle, apply to mixer truck.
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.
Specifications
Highland PV and MF Hydraulic Pumps Motors Series Technical parameter
| PV hydraulic pump and MF hydraulic motor series | 20 | 21 | 22 | 23 | ||
| Displacement | Max displacement | ml/r | 33.3 | 51.6 | 69.8 | 90.5 |
| 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 drain | kg | 45 | 53 | 63 | 78 |
| PV series hydraulic motor hydraulic oil drain | kg | 30 | 34 | 40 | 47 | |
Notices
Hydraulic oil
The suitable replacement period for hydraulic oil in a sealed tank system is 2000 hours, and more often if the hydraulic oil is contaminated with water or other external materials or subjected to abnormal operating conditions.
As a general recommendation, the 10µ inlet oil filter should be replaced every spring or every 1500 hours (whichever occurs first) on a sealed tank system, or in an open tank system with an air filter fill cap. The oil filter should be replaced every 500 hours.
Heat Exchanger
The heat exchanger core and fins are kept clean at all times for maximum cooling and system efficiency, and the exterior of the heat exchanger is checked daily for blockages and cleaned as needed.
Application:
Mixer truck: concrete mixer truck, cement mixer truck;
Coal mining machinery: scraper;
Industry: pharmaceutical machinery;
Transport vehicles: road rollers, concrete pump trucks, stabilized soil mixers
Factory Production & Inspection Evidence
Production of the drive systems takes place at Shandong Highland Hydraulic Seiko Co., Ltd., where units carry identification that can be traced back to their production and inspection records.
- Manufacturer: Shandong Highland Hydraulic Seiko Co., Ltd. (brand: Highland)
- Documented motor: MF20-21 closed-loop axial piston motor
- Documented Component No.: 02603250203005
- Documented project quantity: 20 units
- Closed-loop motor tested and inspection-recorded before release
Records of this kind support the traceability of each unit through production and inspection.
Factory Performance Testing
The factory validates the closed-loop motor on a test bench, measuring speed, pressure, flow, displacement, torque, and both overall and volumetric efficiency.
The supplied Closed-Loop Hydraulic Motor Test Report documents the MF20-21 motor (Component No. 02603250203005), tested at a temperature of 36.5 °C with a power recovery ratio of 10%. Rated displacement is 33.3 mL/rev, maximum continuous speed 3500 r/min and minimum continuous speed 500 r/min, with a rated working pressure of 35 MPa and a maximum (instantaneous) pressure of 42 MPa.
The bench reproduces loaded operating conditions for the motor.
Recorded Test Data
Measured values taken from the closed-loop test bench are reproduced below for reference.
| Speed (r/min) | Pressure (MPa) | Flow (L/min) | Displacement (mL/rev) | Torque (N·m) | Input Power (kW) | Output Power (kW) | Overall Efficiency (%) | Volumetric Efficiency (%) |
|---|---|---|---|---|---|---|---|---|
| 1337 | 4.3 | 47 | 35.2 | 27 | 3.8 | 3.4 | 89.1 | 100 |
| 1337 | 14.3 | 45.7 | 35.2 | 85 | 11.9 | 10.9 | 91.5 | 97.2 |
| 1336 | 29.4 | 43.9 | 35.2 | 172 | 24.1 | 21.5 | 89.4 | 93.5 |
| 1311 | 4.3 | 47.1 | 35.9 | 25 | 3.4 | 3.4 | 98.3 | 100 |
| 1309 | 18.2 | 45.4 | 35.9 | 109 | 14.9 | 13.8 | 92.2 | 96.5 |
| 1308 | 30 | 44.2 | 35.9 | 181 | 24.8 | 22.1 | 89.1 | 94.1 |
Charge pressure: 1.5 MPa. Values are reproduced from the original test record and should be read together with the test bench's measurement and calculation method.
Quality Control & Inspection
The quality-control process links each unit to its test record and engineering specification.
- Product model and unit identification
- Closed-loop hydraulic performance testing
- Pressure and speed verification
- Flow and displacement recording
- Torque and power measurement
- Overall and volumetric efficiency recording
- Engineering interface verification
In the supplied test record the run is signed by an operator and an auditor (Operator 003, Auditor 002). The product documentation also states that units are produced under a strict quality-control system, and that any defective pump or motor is inspected before a response is issued.
Engineering Drawing
An engineering drawing for the MF20-21 defines the hydraulic interfaces and shaft details of the motor.
- High pressure ports A and B: 7/8-14 UNF-2B
- Leakage ports L1 / L2: 3/8-16 UNC-2B, 25 mm depth
- Measuring port M: 7/16-20 UNF-2B
- High pressure relief valves A and B: 35 MPa / 42 MPa
- Output shaft: 21-tooth involute spline, 16/32 radial pitch, 30° pressure angle, 33.34 mm dividing circle diameter
- Conical shaft lock nut: 1-20 UNEF-2B
- Rotation direction: CW / CCW
- Displacement marked on drawing: 33.4 mL/rev
Drawing technical requirement: minimum speed 500 r/min, maximum speed 3500 r/min, rated working pressure 30 MPa. Interface dimensions should be confirmed against the engineering drawing before installation.
Application / Project Evidence
A documented project from the manufacturer's records is summarised below.
- Project: Variable Piston Pump for Saudi Arabia
- Model: MF20-21
- Quantity: 20 units
- Client: Saudi Arabia
- Application: Concrete mixer trucks
- Manufacturer: Shandong Highland Hydraulic Seiko Co., Ltd.
- Drive configuration: closed-circuit hydraulic system
The project is listed as evidence of the manufacturer's delivering experience; suitability for a specific machine should be confirmed before selection.
Technical Documents
The following technical documents are available on request.
| Document | Availability |
|---|---|
| Technical Data Sheet | Available |
| Closed-Loop Motor Test Report | Available |
| Engineering Drawing | Available |
| Model Selection Table | Available |
Key rated values of the documented closed axial piston motor:
| Parameter | Value |
|---|---|
| Rated displacement | 33.3 mL/rev (max) |
| Max continuous speed | 3500 r/min |
| Rated speed | 2500 r/min |
| Min continuous speed | 500 r/min |
| Rated working pressure | 35 MPa |
| Max working pressure (instantaneous) | 42 MPa |
| Continuous working pressure (ΔP) | 30 MPa |
| Continuous output torque | 143 N·m |
| Maximum output torque | 167 N·m |
| Maximum power | 56 kW |
| Allowable shell temperature | -40 to 50 °C |
| Max oil tank temperature | 80 °C |
| Weight (MF series motor) | 34 kg |
| Circuit | Closed-loop |
These documents cover displacement, speed, pressure, torque, power, temperature and weight, and confirm the motor as a closed axial piston type.
FAQ
Q1. Can I have a sample order for wheat harvester hydraulic drive system?
A: Yes, we welcome sample order to test and check quality.
Q2. What about the lead time?
10 to 15 days for samples, mass production according to MOQ
Q3. Do you have any MOQ limit for wheat harvester hydraulic drive system?
A: Low MOQ, 1pc for sample checking is available.
Q4. How do you ship the goods and how long does it take to arrive?
Ship by sea, it generally takes 15-20 days to arrive, and air is also optional.
Q5. How to proceed an order for wheat harvester hydraulic drive system?
A: Firstly let us know your requirements or application.
Secondly We quote according to your requirements or our suggestions.
Thirdly customer confirms the samples and places deposit for formal order.
Fourthly We arrange the production.
Q6: Do you offer guarantee for the products?
A: Yes, we offer 1 years warranty to our products.
Q7: How to deal with the faulty?
Firstly, our products are produced in strict quality control system.Secondly, we will inspect the defective pump and motor, and then respond according to the actual situation.
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