12-Volt, Type 3 pump for hydraulic steering systems

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

Opt for additional installation assistance

Save 7%

Raymarine

M81122

Raymarine reversible pump T3 - 12V

Designed for Raymarine autopilot systems, the Raymarine T3 reversible pump 12V (M81122) operates hydraulic rams from 350 to 500 cc with a flow rate of 3100 cc/min. This pump, rated IP67 and part of the Type 3 range, is supplied with the pump.

Retail priceBenefit from the professional rate

1.695,37€

1.695,37€ ~~1.830,00€~~

Tax included. Shipping calculated at checkout.

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

Opt for additional installation assistance

Technical specifications

Max power consumption	408 W
Typical power consumption	408 W
Operating voltage	12 V
Operating temperature	-15°C to +55°C
Recommended fuse rating	50 A
Product width	61.4 mm
Product height	206 mm
Product depth	84.0 mm
IP rating	IP67
Compass safe distance	100 cm
Mounting type	Surface mounting
Certifications	CE,2004/108/EC (EMC),EN60945:2002,94/25/EC (RCD),EN28846:1993,EN ISO 10592:1995,IEC 60529 IP67
Displacement	350-500 cc
Recommended oil type	Mineral hydraulic oil ISO VG15 or VG22
Drive unit type	Reversible hydraulic pump
Hard-over time	15-25 s
Mounting hardware included	No
Mounting orientation	All orientations (engine facing up if vertical mounting)
Max pressure	55 bar (800 psi)
Boat displacement	Up to 35 000 kg
Integrated rudder angle sensor	No
Disengageable	No

Detailed description

Specifically designed for Raymarine autopilot systems, the Raymarine T3 12V reversible hydraulic pump (M81122) is intended to actuate the steering mechanism of vessels. It integrates into boats equipped with an existing hydraulic steering system or can be used with a mechanical steering system in conjunction with a secondary steering cylinder. This model is the highest-capacity 12V pump in the Raymarine range, ideal for hydraulic cylinders from 350 to 500 cc.

Performance and technical specifications

The M81122 pump is powered by a 12 V DC motor with permanent magnets and carries an IP67 rating, ensuring protection against temporary immersion. The motor is designed to be removed from the pump without introducing air into the hydraulic system or causing fluid leakage. This reversible pump incorporates pilot-operated check valves that prevent backflow from the manual steering system or rudder load. It is compatible with balanced or unbalanced cylinders and can be used with pressurized reservoir systems. All connections are in 1/4 inch BSPP format (parallel thread).

Positioning in the Raymarine range

With a cylinder capacity of 350 to 500 cc and a peak flow rate of 3100 cc/min (unloaded), the Raymarine T3 12V (M81122) delivers superior performance compared to other 12V models in the Raymarine series. For comparison, the Type 0.5 (E12139) handles 50–110 cc with 600 cc/min, the Type 1 (M81120) 80–230 cc with 1000 cc/min, and the Type 2 (M81121) 230–350 cc with 2300 cc/min. The T3 12V delivers a maximum intermittent pressure of 55 bar (800 psi) and a typical current draw of 34 A at 12 V and 55 bar. It is designed for use in engine compartments and complies with CE standards (2004/108/EC EMC, EN60945:2002) and RCD (94/25/EC, EN28846:1993 & EN ISO 10592:1995).

Documentation

Type	Nom
	EN - Installation Guide - Reversible Hydraulic Pump T3 - 12V
	EN - Technical drawing - Reversible pump T3 - 12V
	EN - Declaration of Conformity - Reversible Pump T3 - 12V
	EN - Declaration of conformity - Reversible pump T3 - 12V
	EN - Declaration of conformity - Reversible pump T3 - 12V
	EN - Declaration of Conformity - Reversible Pump T3 - 12V
	EN - Declaration of Conformity - Reversible Pump T3 - 12V
	EN - Declaration of Conformity - Reversible Pump T3 - 12V

Expert opinion

Pol CONIN

Digital Manager

« Technical analysis of the Raymarine T3 12V hydraulic pump »

The Raymarine T3 12V pump (M81122) is specifically designed for autopilot systems requiring significant power output. It is the preferred choice for cruising sailboats or mid-sized to large motorboats equipped with hydraulic rams with capacities between 350 and 500 cc. Its higher capacity compared to the T0.5, T1, and T2 12V models from the same brand ensures adequate responsiveness for larger rams, essential for precise course-keeping and efficient maneuvering.

Its integration requires particular attention, especially regarding the cleanliness of the hydraulic circuit to prevent failure of the check valves. For optimal performance and to eliminate electromagnetic interference, it is recommended to power it from a dedicated service battery separate from the engine starter battery. Although rated IP67 for water resistance, it is critical to avoid high-pressure washing that could compromise its sealing and the longevity of internal components. Undersizing the pump relative to the ram can result in slow autopilot response and premature system wear.

Durabilité

Facilité d'installation

Rapport performance / prix

Payment and security

Your payment information and data are processed securely.

Raymarine reversible pump T3 - 12V

1.695,37€

1.695,37€ ~~1.830,00€~~

Frequently Asked Questions

Need help? Contact us

What is the hydraulic cylinder capacity supported by the Raymarine T3 12V pump (M81122)?

The Raymarine T3 12V pump (M81122) is designed for use with hydraulic cylinders with a capacity ranging from 350 to 500 cc (21 to 30.5 cubic inches). This is the highest-capacity 12V model in the Raymarine range for this range.

Which types of steering systems is this hydraulic pump compatible with?

This pump is compatible with:

Existing hydraulic steering systems. Mechanical steering systems, provided they are paired with a secondary steering cylinder. Balanced or unbalanced cylinders. Systems with a pressurized reservoir. It is specifically designed to integrate with Raymarine autopilot systems.

What is the maximum pressure that the Raymarine T3 12V pump can deliver?

The Raymarine T3 12V pump (M81122) can deliver a maximum intermittent pressure of 55 bar (800 psi).

What are the recommendations for the mounting location of the T3 12V reversible pump?

To ensure optimal operation and safety, the pump must be installed:

Only in below-deck installations.On a solid structure to avoid vibrations that could damage the pipes.Away from heat sources, excessive vibrations, and fumes.NOT to be mounted in confined areas containing flammable materials.Ideally, above the maximum waterline.

What are the technical specifications of the Raymarine T3 12V pump motor?

The Raymarine T3 12V pump motor (M81122) is a 12 V DC motor with permanent magnets. It is rated IP67, ensuring protection against temporary immersion. Its design allows removal from the pump without introducing air into the hydraulic system or causing fluid leaks.