24-Volt, Type 3 pump for hydraulic steering systems

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Raymarine

M81124

Raymarine reversible pump T3 - 24V

The Raymarine T3 24V reversible pump (M81124) is designed for hydraulic steering systems from 350 to 500 cc, delivering a flow rate of 3100 cc/min. This Type 3 model is the most powerful in Raymarine's range for high-capacity hydraulic cylinders.

Retail priceBenefit from the professional rate

1.767,62€

1.767,62€ ~~1.830,00€~~

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In stock

Free pickup point shipping over €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

Find an installer

Support service

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Technical specifications

Max power consumption	372 W
Typical power consumption	372 W
Operating voltage	24 V
Recommended fuse rating	20 A
Product width	89 mm
Product height	126 mm
Product depth	206 mm
IP rating	IP67
Mounting type	Mounting on flat surface
Certifications	CE, EN60945, RCD
Drive unit type	Reversible hydraulic pump
Mounting hardware included	No
Mounting orientation	Standard (on flat surface)
Max pressure	55 bar
Integrated rudder angle sensor	No
Disengageable	No

Detailed description

Designed for demanding hydraulic steering systems, the Raymarine T3 24V reversible pump (M81124) is a solution for vessels equipped with cylinders ranging from 350 to 500 cc. This model is part of Raymarine’s hydraulic pump series, positioned as the most powerful option above the Type 0.5 (50-110 cc), Type 1 (80-230 cc), and Type 2 (230-350 cc) models, offering compatibility with larger vessels. It can operate on single- or double-acting cylinders and can be integrated into pressurized reservoir systems.

Performance and technical integration

The T3 24V pump is powered by a 24V DC motor, delivering a peak flow rate of 3100 cc/min at idle. Its typical current draw is 15.5 A at 24 V and 55 bar, making it efficient for 24V electrical systems. The motors are IP67 certified, allowing installation in engine compartments and providing protection against temporary immersion. Pilot-operated check valves are integrated to prevent backforce from the manual steering system or rudder load, ensuring greater stability and responsiveness of the autopilot.

Compliance and installation

This pump complies with EMC (EN60945:2002) and RCD (EN28846:1993 & EN ISO 10592:1995) standards, minimizing electromagnetic interference. Installation is designed for below-deck environments, requiring a substantial mounting structure to limit vibrations. Raymarine recommends using specific cables and a power supply separate from the engine starter battery to optimize EMC performance. Absolute cleanliness is essential when handling hydraulic systems to ensure proper operation of check valves and prevent contamination of the hydraulic fluid. Hydraulic ports are 1/4 inch BSPP.

Documentation

Type	Nom
	EN - Installation Manual - Reversible Hydraulic Pump T3 - 24V
	EN - Technical Drawing - Reversible Pump T3 - 24V
	EN - Declaration of conformity - Reversible pump T3 - 24V
	EN - Declaration of conformity - Reversible pump T3 - 24V
	EN - Declaration of Conformity - Reversible Pump T3 - 24V
	EN - Declaration of Conformity - Reversible Pump T3 - 24V
	EN - Declaration of Conformity - Reversible Pump T3 - 24V
	EN - Declaration of Conformity - Reversible Pump T3 - 24V

Expert opinion

Pol CONIN

Digital Manager

« Technical analysis: Raymarine T3 24V pump for large hydraulic systems »

The Raymarine T3 24V reversible hydraulic pump (M81124) is specifically sized for autopilot applications on medium to large vessels, where the hydraulic cylinder capacity ranges between 350 and 500 cc. Unlike the T0.5, T1, or T2 models, this pump delivers the power and flow rate (3100 cc/min) required to operate larger rudders, ensuring adequate autopilot responsiveness.

Its 24V power supply is a major advantage for installations where a 24V electrical system is already in place, reducing current draw (15.5 A at 55 bar) compared to an equivalent 12V version (34 A for model M81122). This minimizes load on the vessel's electrical system and the required cable cross-section. The inclusion of pilot-operated check valves is a critical feature, ensuring the pump is not forced by the manual steering system or rudder pressure, which is essential for system longevity and safety.

Installation must be done below deck on a robust structure to avoid excessive vibrations that could compromise hydraulic fittings. Extreme cleanliness is required during hydraulic connections; even a minute particle can affect the operation of the check valves. Although the unit is rated IP67, protected installation from direct spray and areas of high condensation is always preferable to maximize its lifespan. This model is a sound choice for boats requiring a reliable and powerful autopilot capable of handling large hydraulic cylinders without overloading a 12V electrical system.

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Raymarine reversible pump T3 - 24V

1.767,62€

1.767,62€ ~~1.830,00€~~

Frequently Asked Questions

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What is the hydraulic cylinder capacity compatible with the Raymarine T3 24V pump?

The Raymarine T3 24V pump (M81124) is designed for hydraulic steering systems fitted with cylinders ranging from 350 cc to 500 cc (21 to 30.5 cubic inches). It is compatible with both single-acting and double-acting cylinders.

What is the required supply voltage for this Raymarine T3 pump?

The Raymarine T3 reversible pump (M81124) is specifically designed to operate on a 24 V DC power supply.

Where and how should I install the Raymarine T3 hydraulic pump on my boat?

The pump is designed for installation below deck only. It is crucial to mount it on a substantial structure to minimize vibrations that could damage the hoses. Avoid mounting it near heat sources, excessive vibrations, or fumes, and do not install it in confined areas containing flammable materials.

What are the benefits of the built-in check valves in this pump?

The Raymarine T3 pump integrates pilot-operated check valves. These valves prevent the pump from being driven in reverse by the manual steering system or by the rudder load. This contributes to enhanced stability and responsiveness of the autopilot.

Is the Raymarine T3 pump water-resistant?

Yes, the Raymarine T3 24V pump motor is IP67 certified. This rating ensures protection against temporary immersion and allows secure installation in engine compartments.

What is the maximum flow rate of this hydraulic pump?

The Raymarine T3 24V pump (M81124) delivers a peak flow rate of 3100 cc/min (189.2 cubic inches per minute) when running unloaded.

How can I optimize electromagnetic performance (EMC) when installing the pump?

For optimal EMC performance, it is recommended to use the cables specified by Raymarine and to provide a separate power supply from the engine starter battery. Additionally, Raymarine equipment and cables must be kept at least 1 meter away from equipment transmitting radio signals (such as VHF radios) and more than 2 meters from the path of a radar beam.

What types of hydraulic fittings are used on the Raymarine T3 pump?

All hydraulic ports on the Raymarine T3 pump are 1/4 inch BSPP (parallel thread) type. Rubber/metal seals are supplied with the pump, and 1/4 inch BSP to 1/4 inch NPT adapters may be required depending on your existing hydraulic system.