12-Volt, Type 1 pump for hydraulic steering systems

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Raymarine

M81120

Raymarine T1 12V reversible hydraulic pump

Designed for Raymarine autopilot systems, the Raymarine T1 12V reversible pump (M81120) is a hydraulic drive unit intended for cylinders ranging from 80 to 230 cc. This model delivers a flow rate of 1000 cc/min with a maximum intermittent pressure of 55 bar.

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1.118,35€

1.118,35€ ~~1.194,00€~~

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In stock

Free pickup point shipping over €150 in France
Pickup at Skysat possible

Custom installation

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Installers near you

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Support service

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Technical specifications

Max power consumption	228 W
Typical power consumption	228 W
Operating voltage	12 V
Recommended fuse rating	25 A
Product width	103 mm
Product height	58.4 mm
Product depth	199 mm
IP rating	IP67
Compass safe distance	100 cm
Mounting type	Mounting on flat surface below deck
Certifications	CE, IEC 60945
Drive unit type	Reversible hydraulic actuator
Mounting hardware included	No
Max pressure	55 bar
Integrated rudder angle sensor	No
Disengageable	No

Detailed description

The Raymarine T1 12V (M81120) reversible hydraulic pump is designed to operate a vessel’s steering mechanism within a Raymarine autopilot system. This model is primarily intended for boats equipped with an existing hydraulic steering system, or can be used with a mechanical steering system in combination with a secondary cylinder. The 12V DC permanent-magnet motor has an IP67 rating, providing protection against temporary immersion and dust, and can be removed from the pump without introducing air into the hydraulic system or causing fluid leakage.

Technical specifications

The T1 (M81120) pump is compatible with single- or double-acting hydraulic cylinders, covering a capacity range of 80 to 230 cc. It delivers a peak flow rate of 1000 cc/min (unloaded) and supports a maximum intermittent pressure of 55 bar (800 psi) at 12V. Typical current draw is 19 A at 12V and 55 bar. Integrated pilot-operated check valves prevent the pump from being driven by the manual steering system or rudder load, ensuring course stability. This model is also compatible with pressurized reservoir systems and is protected for use in engine compartments.

Position in the Raymarine range

The Raymarine T1 12V (M81120) pump is positioned as an intermediate solution in the Raymarine hydraulic pump range. It offers higher capacity and flow than the Type 0.5 pump (E12139), which handles cylinder capacities of 50–110 cc and a flow rate of 600 cc/min. In contrast, the Type 2 (M81121 12V, M81123 24V) and Type 3 (M81122 12V, M81124 24V) models are designed for larger cylinders, ranging from 230–350 cc for Type 2 and 350–500 cc for Type 3, with peak flow rates of 2300 cc/min and 3100 cc/min respectively. The T1 12V (M81120) model strikes a balance between performance and compactness for a wide range of recreational vessels. All pumps in this Raymarine series share common features such as compliance with CE 2004/108/EC (EMC) and 94/25/EC (RCD) standards, as well as IP67 protection.

Documentation

Type	Nom
	EN - Installation Manual - Reversible Hydraulic Pump T1 - 12V
	EN - Technical drawing - Reversible pump T1 - 12V
	EN - Declaration of conformity - Reversible pump T1 - 12V
	EN - Declaration of Conformity - Reversible Pump T1 - 12V
	EN - Declaration of conformity - Reversible pump T1 - 12V
	EN - Declaration of Conformity - Reversible Pump T1 - 12V
	EN - Declaration of Conformity - Reversible Pump T1 - 12V
	EN - Declaration of Conformity - Reversible Pump T1 - 12V

Expert opinion

Pol CONIN

Digital Manager

« Analysis of the Raymarine T1 12V hydraulic pump »

The Raymarine T1 12V hydraulic pump (M81120) is a fundamental component for autopilot systems on a wide range of recreational vessels, typically those equipped with medium-sized steering cylinders. Its capacity to handle cylinders from 80 to 230 cc makes it suitable for cruising sailboats or motorboats of approximately 8 to 12 meters, where maneuvering requirements demand more power than a 0.5 model but do not reach the needs of very large vessels. The choice of 12V DC is standard and simplifies electrical integration on most boats.

Installing this pump requires absolute cleanliness of the hydraulic circuit to prevent contamination of the integrated check valves, which is critical for system reliability. Although the motor is rated IP67, it is recommended to install it in a dry and ventilated compartment, away from heat sources and excessive vibrations, to maximize its lifespan and the stability of hydraulic connections. This pump must be considered as a secondary steering system drive, not as a replacement for the primary system, in accordance with the manufacturer's safety guidelines.

Compared to Raymarine’s type 2 or 3 pumps, the T1 12V offers an optimal balance in size, power consumption, and delivered power, making it relevant for vessels whose cylinders do not justify the higher flow rates of larger models. For a successful installation, the use of high-quality hydraulic fittings and hoses is essential, along with thorough bleeding of the circuit after assembly.

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Raymarine T1 12V reversible hydraulic pump

1.118,35€

1.118,35€ ~~1.194,00€~~

Frequently Asked Questions

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What is the primary function of the Raymarine T1 reversible pump - 12V (M81120)?

The Raymarine T1 reversible pump - 12V (M81120) is designed to operate 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 a mechanically steered vessel in conjunction with a secondary ram.

With which types of hydraulic rams is the T1 pump (M81120) compatible?

The Raymarine T1 pump (M81120) is compatible with single- or double-acting hydraulic rams. It is specifically designed for rams with a displacement between 80 and 230 cc (4.9 to 14.0 cubic inches).

What are the performance specifications of the T1 - 12V reversible pump?

The Raymarine T1 - 12V pump (M81120) delivers the following performance specifications at its nominal voltage:

Peak flow rate (no load): 1000 cc/minMaximum intermittent pressure (at 12 V): 55 bar (800 psi)Typical current draw (at 12 V and 55 bar): 19 A

Where and how should I mount the Raymarine T1 hydraulic pump?

The pump is designed exclusively for installations below deck. It must be mounted on a substantial structure to prevent vibrations that could damage the hoses. It should be installed away from heat sources, excessive vibrations, and fumes, and must never be placed in confined areas containing flammable materials. It is also recommended to install it above the waterline.

Is the T1 pump (M81120) protected against water and dust?

Yes, the Raymarine T1 pump (M81120) has an IP67 rating. This means it is protected against temporary immersion in water and against dust. The motor can be removed from the pump without introducing air into the hydraulic system or causing fluid leakage.

What are the EMC (Electromagnetic Compatibility) installation guidelines for the Raymarine T1 pump?

To ensure optimal electromagnetic compatibility (EMC) performance, Raymarine equipment and its cables should be:

At least 1 meter (3 feet) away from any equipment transmitting or cables carrying radio signals (e.g., VHF radios, cables, and antennas). For SSB radios, this distance must be increased to 2 meters (7 feet).More than 2 meters (7 feet) away from the path of a radar beam.Powered by a separate battery from the one used for engine starting to prevent erratic behavior and data loss.It is also recommended to use the cables specified by Raymarine and not to cut or extend them unless detailed in the installation manual.