Type 0.5 Autopilot hydraulic pump for 12 volt systems

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Raymarine

E12139

Reversible Pump T0.5 - 12V

The Raymarine T0.5 - 12V reversible pump (E12139) is the most compact option in the Raymarine hydraulic pump range, ideal for autopilot systems and actuators from 50 to 110 cc. Designed for reliable integration with SPX course computers or ACU Evolution units, it features IP67 protection for engine environments. The product includes the hydraulic pump, three 1/4 in BSP rubber/metal seals, and three 1/4 in BSP to 1/4 in NPT adapters (if required).

Retail priceBenefit from the professional rate

£648.88 GBP

£648.88 GBP ~~£720.45 GBP~~

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In stock

Free pickup point from €150 in France
Pickup at Skysat possible

Custom installation

Trust Skysat to install the equipment on board

Request a quote

Installers near you

thanks to our network of approved installers

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Support service

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Technical specifications

Max power consumption	108 W
Typical power consumption	108 W
Operating voltage	12 V
Operating temperature	-25°C to +55°C
Recommended fuse rating	15 A
Product width	103 mm
Product height	89 mm
Product depth	203 mm
IP rating	IP67
Mounting type	Bolted mount
Certifications	CE, EN60945, IEC 60529 IP67
Displacement	50-110 cc
Drive unit type	Reversible hydraulic pump
Mounting hardware included	No
Mounting orientation	All orientations, provided the engine is not under the pump body
Max pressure	55 bar (800 psi)
Integrated rudder angle sensor	No
Disengageable	No

Detailed description

Designed for Raymarine autopilot systems, the Raymarine reversible pump T0.5 - 12V (E12139) is a hydraulic unit suitable for vessels equipped with an existing hydraulic steering system or a mechanical system with a secondary ram. Positioned as the most compact in Raymarine’s hydraulic pump range, it is ideal for rams with a capacity of 50 to 110 cc (3.1 to 6.7 in³).

Performance and integration

This type 0.5 pump delivers a peak flow rate of 600 cc/min (36.6 in³/min) unloaded, with a maximum intermittent pressure of 55 bar (800 psi) at 12 V. Typical current draw is 9 A at 12 V under 55 bar. The pump’s 12 V DC motor is IP67-rated and can be removed without compromising the hydraulic system’s watertight integrity. It includes pilot-operated check valves to prevent backflow through the manual steering system and is compatible with balanced or unbalanced rams, as well as systems with pressurized reservoirs.

Comparison and physical specifications

The T0.5 pump (E12139) differs from higher-capacity models in Raymarine’s range, such as type 1 (M81120/M81119), type 2 (M81121/M81123), and type 3 (M81122/M81124), in both ram capacity and flow rate, making it suitable for small to medium installations. While the T0.5 handles up to 110 cc, type 1 supports up to 230 cc, type 2 up to 350 cc, and type 3 up to 500 cc. Its compact dimensions (A: 58.4 mm, B: 203 mm) and 1/4-inch BSPP ports facilitate installation below deck, away from heat and vibration sources. It meets CE standards, including the EMC directive 2004/108/EC and EN60945:2002.

Documentation

Type	Nom
	EN - Installation Manual - Reversible Hydraulic Pump T0.5 - 12V
	EN - Declaration of Conformity
	EN - Declaration of Conformity
	EN - Declaration of Conformity
	EN - Declaration of Conformity
	EN - Declaration of Conformity
	EN - Declaration of Conformity

Expert opinion

Pol CONIN

Digital Manager

« Technical analysis of the Raymarine T0.5 hydraulic pump for autopilot »

The reversible hydraulic pump T0.5 - 12V Raymarine (E12139) is a key component for autopilot systems on medium-sized vessels. Its specification for cylinders ranging from 50 to 110 cc positions it as Raymarine's entry-level solution for hydraulic steering, targeting sailboats or small motor yachts where the cylinder volume falls within this range. It is particularly suitable when installation space is limited due to its compact dimensions.

Integrating this pump into an existing system requires careful attention to hydraulic circuit cleanliness to ensure proper operation of the integrated check valves. Installation must be done below deck, away from excessive heat sources or vibrations, to ensure system longevity. Its 12V design and 9A consumption at 55 bar make it compatible with the standard electrical architectures of most recreational boaters, without excessively draining service batteries, unlike larger-capacity pumps such as the Type 2 or Type 3 models, which can draw 24A or 34A at 12V.

While the manual recommends installation by a Raymarine authorized service representative, for an experienced marine electronics and hydraulics installer, this pump is straightforward to implement provided the electrical connection directives to an Evolution ACU or SPX course computer are strictly followed. It is crucial to note that this pump is not suitable for large-capacity hydraulic cylinders, for which the T1, T2, or T3 models would be more appropriate.

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Reversible Pump T0.5 - 12V

£648.88 GBP

£648.88 GBP ~~£720.45 GBP~~

Frequently Asked Questions

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For which type of steering system is this pump designed?

The Raymarine T0.5 reversible pump is primarily designed for vessels equipped with an existing hydraulic steering system. It can also be used on vessels with a mechanical steering system, provided it is paired with a secondary steering cylinder.

What is the maximum hydraulic cylinder capacity this pump can handle?

This T0.5 hydraulic pump is suitable for cylinders with a capacity between 50 and 110 cc (3.1 to 6.7 in³).

What are the key performance specs of the T0.5 reversible pump in terms of flow rate and pressure?

The T0.5 reversible pump delivers the following performance at 12 V:

Peak flow rate (no load): 600 cc/min (36.6 in³/min)Maximum intermittent pressure: 55 bar (800 psi)Typical current draw: 9 A at 55 bar

Where should I install the Raymarine T0.5 pump on my boat?

The T0.5 pump is designed for installation below deck only. For optimal performance and to prevent damage, it is recommended to install it:

On a solid structure to minimize vibrations.Away from heat sources, excessive vibrations, and fumes.Clear of confined areas containing flammable materials.Preferably above the waterline.Absolute cleanliness is essential during installation of hydraulic systems to prevent dirt particles from affecting the operation of the check valves.

Is this pump compatible with balanced or unbalanced hydraulic rams?

Yes, the Raymarine T0.5 reversible pump is compatible with both balanced and unbalanced hydraulic rams. It can also be used with pressurized reservoir systems.

Is the pump motor waterproof and can it be easily removed?

Yes, the pump motor is rated IP67, providing protection against temporary immersion in water. It can be removed from the pump without compromising the hydraulic system's watertight integrity or causing fluid leaks.

What are the hydraulic connections for the T0.5 pump?

All hydraulic ports on the Raymarine T0.5 reversible pump are 1/4 inch BSPP (parallel thread) type.

With which Raymarine autopilot systems is this pump compatible?

The Raymarine T0.5 reversible pump is designed to be integrated with Raymarine autopilot systems. It is compatible with the SPX course computer or the Evolution actuator control unit (ACU).