12-Volt, Type 2 pump for hydraulic steering systems

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Raymarine

M81121

T2 12V reversible pump

Designed for Raymarine autopilot systems, the reversible T2 12V pump (M81121) is suitable for hydraulic rams from 230 to 350 cc. It delivers a peak flow rate of 2300 cc/min and has an IP67 rating, ideal for mid-sized vessels. This model sits between the Type 1 and Type 3 in Raymarine’s lineup, offering a balanced solution for most installations.

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£985.08 GBP

£985.08 GBP ~~£1,038.68 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	288 W
Typical power consumption	288 W
Operating voltage	12 V
Recommended fuse rating	30 A
Product width	89 mm
Product height	59.5 mm
Product depth	204 mm
IP rating	IP67
Compass safe distance	100 cm
Mounting type	Below deck, on a flat and solid surface
Certifications	CE 2004/108/EC (EMC), EN60945:2002, 94/25/EC (RCD), EN28846:1993, EN ISO 10592:1995, IEC 60529 IP67
Displacement	230-350 cc
Drive unit type	Reversible hydraulic pump
Hard-over time	10 seconds
Mounting hardware included	BSP/NPT joints and adapters (if required), fasteners not included
Mounting orientation	All orientations possible (engine facing up for vertical mounting)
Max pressure	55 bars
Integrated rudder angle sensor	No
Disengageable	No

Detailed description

The Raymarine T2 12V reversible pump (reference M81121) is designed to operate the steering mechanism of vessels within a Raymarine autopilot system. Primarily intended for boats equipped with an existing hydraulic steering system, it can also be used on mechanically steered vessels in conjunction with a secondary steering cylinder. Compared to the Type 0.5 (50-110 cc) and Type 1 (80-230 cc) pumps, the Type 2 offers a cylinder capacity range of 230 to 350 cc, positioning it for medium to large steering systems, while the Type 3 (350-500 cc) targets the largest cylinders.

Technical specifications and integration

This pump is powered by a 12 V DC permanent magnet motor and includes pilot-operated check valves that prevent backflow from the manual steering system or rudder load. With an IP67 rating, the motor is water-resistant and can be removed from the pump without introducing air into the hydraulic system or causing fluid leaks. It is compatible with balanced or unbalanced cylinders and can be used with pressurized reservoir systems.

Performance and compliance

The Raymarine T2 reversible pump delivers a peak flow rate of 2300 cc/min (no load) and supports a maximum intermittent pressure of 55 bar (at 12 V). The typical current draw at 12 V and 55 bar is 24 A. All ports are 1/4 inch BSPP type. Designed for below-deck installation, it is protected for use in engine compartments. This product complies with CE 2004/108/EC (EMC), EN60945:2002, 94/25/EC (RCD), EN28846:1993, and EN ISO 10592:1995.

Documentation

Type	Nom
	EN - Installation Manual - Reversible Hydraulic Pump T2 - 12V
	EN - Technical Drawing - Reversible Pump T2 - 12V
	EN - Declaration of conformity - Reversible pump T2 - 12V
	EN - Declaration of conformity - Reversible pump T2 - 12V
	EN - Declaration of Conformity - Reversible Pump T2 - 12V
	EN - Declaration of Conformity - Reversible Pump T2 - 12V
	EN - Declaration of Conformity - Reversible Pump T2 - 12V
	EN - Declaration of Conformity - Reversible Pump T2 - 12V

Expert opinion

Pol CONIN

Digital Manager

« Technical analysis of the Raymarine T2 12V hydraulic pump »

The Raymarine Type 2 reversible hydraulic pump, model M81121, is a critical component for integrating an autopilot system on sailboats and powerboats equipped with hydraulic steering. With a cylinder capacity of 230 to 350 cc, it is ideally suited for mid-sized vessels, offering a balance between power and footprint. It differs from the Type 1, which is more compact (80-230 cc), and is designed for applications where the Type 3 (350-500 cc) would be oversized.

This pump must be installed below deck on a rigid structure to minimize vibrations that could reduce the lifespan of hydraulic hoses. Absolute cleanliness is essential when handling fittings and hoses to prevent system contamination, which could impair the function of the integrated check valves. For optimal EMC performance, connection to a battery separate from the engine starter battery is recommended. While the installation manual is detailed, the intervention of a Raymarine-certified technician is strongly advised to ensure system safety and performance.

This pump is not intended as a replacement for the primary steering system but as an assist for autopilot operation. Its use is discouraged in confined areas where flammable materials are present. Its design with a separable motor simplifies maintenance without requiring a full hydraulic circuit bleed, a practical advantage over time.

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T2 12V reversible pump

£985.08 GBP

£985.08 GBP ~~£1,038.68 GBP~~

Frequently Asked Questions

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What is the Raymarine T2 12V reversible pump used for?

The Raymarine T2 reversible 12V pump (part number M81121) is designed to actuate the steering mechanism of a vessel within a Raymarine autopilot system. It is primarily intended for boats equipped with an existing hydraulic steering system. It can also be used on mechanically steered vessels in conjunction with a secondary steering cylinder.

What is the hydraulic ram capacity compatible with this Raymarine T2 pump?

The Raymarine Type 2 reversible pump is designed for medium to large steering systems, handling a ram capacity of 230 to 350 cc (14 to 21.4 cubic inches). For reference, the Type 0.5 handles 50-110 cc, the Type 1 handles 80-230 cc, and the Type 3 handles 350-500 cc.

What are the electrical specifications of the Raymarine T2 12V pump?

This pump is powered by a 12 V DC permanent magnet motor. It is designed to operate with a typical current draw of 24 A at 12 V and 55 bar pressure. All pump ports are 1/4 inch BSPP type.

Is the Raymarine T2 pump compatible with all types of hydraulic rams and systems?

Yes, the Raymarine T2 pump is compatible with balanced or unbalanced rams. It can also be used with pressurized reservoir systems. Its design includes pilot-operated check valves that prevent feedback from the manual steering system or rudder load.

Where and how to install the Raymarine T2 reversible pump?

The T2 pump is designed exclusively for installation below deck. For optimal performance and to avoid vibrations that could damage the pipes, it must be mounted on a solid structure. It is crucial to install it away from heat sources, excessive vibrations, and fumes, and not to mount it in confined areas containing flammable materials. Additionally, it must be installed above the waterline. Absolute cleanliness is essential when installing hydraulic systems to prevent dirt particles from affecting the operation of the check valves.

Is the Raymarine T2 pump waterproof?

Yes, the Raymarine T2 reversible pump motor has an IP67 protection rating, making it water-resistant. This design allows you to remove the pump motor without introducing air into the hydraulic system or causing fluid leaks.