The Yale PY-04 range comprises portable two-stage electric hydraulic motor pumps at 700 bar with 5 litre useable reservoir. Three variants cover single-acting (2/2-way) and double-acting (4/3-way) cylinder applications, plus a solenoid-valve variant for remote control. All variants run on 230 V single-phase supply.
Designed for maintenance and repair jobs
Yale describes the PY-04 as particularly designed for maintenance and repair jobs. The combination of manually-operated valve and remote pendant control provides operator freedom of motion and ensures safe holding of the load. The 1.5 m remote pendant control is used to start the motor even under full load. Yale specifies manual valve function: advance / stop / return.
Suitable Applications
Per Yale: maintenance and repair work. PY-04/2/5/2 M (2/2-way manual) for single-acting cylinders; PY-04/2/5/4 M (4/3-way manual) for double-acting; PY-04/2/5/2 E (2/2-way solenoid) for remote-controlled single-acting.
Match the pump to the cylinder volume and check the coupler type against your hoses and fittings; a pump that will not connect is the commonest problem on site.
Key Features
- Light-Weight Portable Design: convenient carrying handle.
- Two-Stage Powerful Pump: rapid no-load travel; high-force loaded operation.
- 0.37 kW 230 V Single-Phase Motor: standard mains supply.
- Remote Pendant Control 1.5 m: starts motor even under full load.
- Manual or Solenoid Valve Options: matched to application.
- Thermal Overload Protection: built into motor.
- Supplied with Hydraulic Oil: ready to use.
- IP 50 Motor Protection: Yale-specified ingress protection.
Technical Specifications
| Operating Pressure |
700 bar maximum |
| Reservoir Volume |
5 L useable |
| No-Load Stroke (up to 30 bar) |
4.0 l/min |
| Under-Load Stroke (up to 700 bar) |
0.23 l/min |
| Motor Power |
0.37 kW |
| Voltage |
230 V single-phase |
| Motor Speed |
2800 rpm |
| Remote Cable |
1.5 m |
| Protection Standard |
IP 50 |
| Weight without Oil |
24 - 28 kg |
| Standard Models |
3 |
Frequently Asked Questions
Q: How does the PY-04/2/5/2 M differ from the PY-04/2/5/4 M?
Yale specifies the 2/2-way manual valve (PY-04/2/5/2 M) for single-acting cylinders. After motor stop, the valve gives two options: cylinder holds pressure, OR cylinder automatically retracts. The 4/3-way (PY-04/2/5/4 M) controls double-acting cylinders with explicit advance/stop/retract positions.
Q: How does the solenoid variant work?
Yale documents: push button 1 starts the motor and cylinder advances; in neutral the pressure is held; push button 2 activates the solenoid valve, releasing pressure and retracting the cylinder.
Q: Is the pump supplied with oil?
Yes. Yale specifies the pump is supplied with hydraulic oil.
