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PR+ Reversing Electro-Hydraulic Power Unit
378,45 € – 730,89 €
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The ML+40 Electro Hydraulic Linear Actuator combines all the elements of an hydraulic circuit in one compact unit. Designed for ease of installation, the unit is supplied with a quick release mounting, tiller bolt and fitting kit.
An optional rudder reference/feedback unit can be mounted directly onto the actuator.
Integral relief valves protect the unit and its mountings from being overloaded.
Terms and Conditions
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Detailed Information
A permanent magnet DC motor driven precision gear pump available with a range of flows from 0.6 to 2.5 L/min. Each pump is fitted with zero-leakage pilot check valves for positive locking of steering cylinders.
The two service ports and reservoir port are positioned at the front of the pump. The threads are G1/4 (BSP) parallel. There is an optional second reservoir port on the top face accessed via a removable plug. If top mounted ports are preferred a kit is available to provide this option.
Relief valves to limit the maximum pressure generated are available as a further option.The motors are maintenance free with internal brushes giving typically a 4000+ hour life. The front and rear bearings are sealed ball races for smooth and quiet operation. They have an Ingress Protection rating of IP67. They have a nominal output of 100W with a 50W option on the 12V PR+10 pumps.
The pumps are sealed on the driven gear journal allowing the motor to be removed without air entering or oil loss from the hydraulic circuit.
Application
Designed specifically for the marine autopilot market they are used by the worlds leading autopilot manufacturers. They can be used with balanced or unbalanced cylinders and are suitable for use in pressurized reservoir systems.See page 9 for a selection guide for matching the drives to hydraulic steering cylinders.
Features
- Quiet and smooth operation
- Low power consumption.
- Zero back drive check valves.
- 6 flow options100W motors
- 50W motor on PR+08
- 12 and 24V DC motor options.
- Relief Valve option.
- Port position options.
- Compact.
- Easy installation.
- G1/4 (BSP) parallel ports
- NPTF and M10 adapter kits available
- Service kits available.
- Cylinders and hose kits supplied to suit.
- Fully compliant to the Recreational Craft Directive Supplied with EU Declaration of Conformity
Performance Graphs
Typical performance
ATF (40 cSt @40oC) @ 25ºC
Technical Data
Voltage 12 / 24 VDC
| Typical amp-hour 5 bar at 25% duty |
Max current Intermittent 55 bar |
||||
| Nominal L/min | 12v | 24v | 12v | 24v | |
| PR+05 | 0.5 | 1.5 | – | 10.0 | |
| PR+06 | 0.6 | 0.9 | – | 9.0 | – |
| PR+08 | 0.8 | 1.3 | – | 14.0 | – |
| PR+10 | 1.0 | 2.2 | 1.0 | 19.0 | 9.0 |
| PR+15 | 1.5 | 2.4 | 1.2 | 24.0 | 11.0 |
| PR+20 | 2.0 | 2.5 | 1.3 | 25.0 | 12.0 |
| PR+25 | 2.5 | 2.7 | 1.4 | 34.0 | 15.5 |
| Ingress protection: | IP67 |
| EMC Protection: | BS EN 60945:2002 (DC) |
| Ignition Protection: | BS EN 28846:1993 |
| EN ISO 10592: | 1995 (Small Craft – Hydraulic Steering Systems) |
| Ambient Operating Temperature: | -15 to +55 deg C |
| Max Pressure: | 55 bar (intermittent operation) |
| Reservoir line: | 2 bar Max |
| Ports: | G1/4 (BSPP) Parallel A = ram port B = ram port R = reservoir port |
| Rotation: | Red lead to – positive Pressure to A port Black lead to positive – Pressure to B port |
| Hoses: | Suitable for working pressure 55 bar |
| Minimum burst pressure: | 100 bar |
| Fluid: | ISO VG10 to VG40 Hydraulic mineral fluid meeting ISO 6743-4 HV |
Autopilot Reversing Drive Selection
A basic guide to aid selection of a PR+ reversing pump for your vessel. Always refer to the autopilot manufacturers documentation to ensure that the chosen pump is compatible.
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