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Raymarine

N021

Reinforced gear kit for linear actuator

This high-strength gear kit (reference N021) is an OEM spare part designed for the maintenance of Raymarine Type 1 and Type 2 mechanical linear actuators. Made from marine-grade anticorrosion alloy, it allows upgrading older standard gears to restore the mechanical integrity of the power unit, ensuring optimal torque transfer and silent operation.

Includes: 4 planetary gears, 1 driven pinion, 1 pulley hub, 1 rear ring, 1 Oilite bearing, 4 screws, 4 washers, and 4 shims.

Retail priceBenefit from the professional rate

245,88€

245,88€ ~~294,00€~~

Tax included. Shipping calculated at checkout.

Available 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

Product type	Autopilot gear kit
Application Type	Heavy-duty drives
Harmonized System Code	8483908990
Packaged product weight	0.5
Weight	0.2

Detailed description

The Raymarine N021 reinforced gear kit is an OEM replacement part designed for servicing Raymarine mechanical linear actuators. Manufactured in Hungary, this kit integrates heavy-duty components to enhance longevity and reliability of the autopilot system.

N021 kit contents

The N021 kit includes a single pre-assembled component: the driven gear assembly (identified as reference 15 in Raymarine linear actuator exploded views). This assembly consists of a black toothed pulley marked "H", a white plate, a central steel toothed sun gear, and four screws that secure the plate and gear to the pulley.

Note that the planetary gears (reference 14), planet carrier (reference 12), pin (reference 11), and washers or shims are not included in this kit. These components must be retained from the existing actuator during maintenance.

Compatibility

This kit is specifically compatible with Raymarine mechanical linear actuators.

Expert opinion

Pol CONIN

Digital Manager

« Technical Analysis of Raymarine Kit N021: Mechanical Restoration of Linear and Rotary Units Type 1 and 2 »

The maintenance of a vessel's directional precision relies entirely on the mechanical reliability of its power unit. As marine system integrators, we observe that autopilot drives undergo massive torque stresses over the seasons. The Raymarine N021 gear kit is the reference refurbishment solution for linear mechanical power units of Type 1 and Type 2, as well as for rotary drives. This original component, weighing 0.2 kg, is critical for restoring full mechanical integrity to a rudder system without requiring replacement of the entire actuator or motor.

The architecture of this kit is designed to withstand the most demanding marine environments. Machined from a high-strength, corrosion-resistant marine alloy, it includes all critical kinematic elements: four planetary gears, a driven pinion, a solar pulley hub, a pinion support ring, and a high-quality self-lubricating Oilite bearing. The inclusion of specific fasteners and shim washers ensures a precise fit during maintenance. This OEM-level requirement restores optimal torque transfer and eliminates mechanical play, preventing excessive electrical consumption and preserving the autopilot's power electronics.

In practice, installing this kit drastically reduces noise and vibration during course corrections, a major advantage for offshore comfort. By restoring the smoothness and precision of internal transmission movements, the N021 kit ensures that your Raymarine system maintains instant responsiveness, guaranteeing rigorous and secure course-keeping even in challenging sea conditions.

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Reinforced gear kit for linear actuator

245,88€

245,88€ ~~294,00€~~

Frequently Asked Questions

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For which autopilot models is this gear kit compatible?

This N021 gear kit is designed for Raymarine linear and rotary actuators (Type 1 and Type 2).

What are the signs that indicate I need to replace the gears in my autopilot?

You should consider replacing the gears if you observe one or more of the following signs on your autopilot:

Excessive or unusual mechanical noise (grinding, clunking) during operation.Significant play in the transmission, resulting in sluggish rudder response.The autopilot motor runs but the ram does not move or moves jerkily.

Is the installation of this kit difficult?

Installing this kit requires a certain level of technical skill. It involves partially disassembling the autopilot’s housing to access the internal mechanism. A person comfortable with small mechanical tasks can perform the procedure.

What exactly is included in the N021 gear kit?

The N021 kit is a complete solution for overhauling the transmission. It includes all the pinions and gears required to replace the internal mechanism of your Raymarine linear and rotary actuators.

Is special grease required for installation?

Yes, it is essential to lubricate the new gears with high-quality marine grease during installation. This ensures smooth operation, reduces wear, and protects parts from corrosion. The grease is not included in the kit.

Is this an original part manufactured by Raymarine?

Yes, absolutely. The N021 gear kit is an official spare part manufactured by Raymarine. Using an original part ensures a perfect fit, compliance with tolerances, and restoration of your autopilot's original performance.

Can replacing the gears improve the accuracy of my autopilot?

Yes. Worn gears create play in the drive, which reduces the autopilot’s responsiveness and accuracy. Installing this new kit eliminates this play and restores the original steering precision and responsiveness of your device.

What is the main advantage of repairing my autopilot with this kit?

The main advantage is economic and sustainable. This kit significantly extends the lifespan of your autopilot for a fraction of the cost of replacing the entire drive unit.

Is there an important precaution to take before starting the installation?

Yes, the most important precaution is to ensure the autopilot is completely disconnected from any power source before starting to disassemble it. This prevents any risk of short-circuit or accidental activation.

Will replacing the gears resolve a noise issue?

Yes, in most cases. If your autopilot’s noise is a mechanical squeak or clack coming from the drive, replacing the worn gears with this new kit should effectively eliminate the noise.