Raymarine Type 2 Long Linear Drive - 12V Product Description

Raymarine Type 2 Long Linear Drive M81132 - Professional 12V Autopilot Actuator for Heavy Displacement Vessels

High-Performance Mechanical Linear Drive for Boats up to 44,000 lbs

The Raymarine Type 2 Long Linear Drive M81132 represents the pinnacle of marine autopilot actuator technology, delivering exceptional steering performance for mechanically steered vessels up to 44,000 pounds (20,000 kg). This professional-grade 12V linear drive unit provides the powerful thrust, fast response times, and quiet operation essential for serious cruising and commercial marine applications.

Advanced Mechanical Drive Technology

High-Thrust Performance

• Maximum Thrust Output: 1,050 pounds of steering force for reliable control in challenging conditions
• 16-Inch Stroke Length: Extended range accommodates large rudder movements and diverse installation requirements
• Fast Hardover Times: Rapid response capability for emergency maneuvers and precise course corrections
• Maximum Rudder Torque: Handles up to 14,700 lbs of rudder resistance

Precision Engineering Features

• Low Backdrive Force: Minimizes interference with manual steering when autopilot is in standby mode
• Electromagnetic Fail-Safe Clutch: Automatic disengagement ensures manual steering control during emergencies
• High-Tensile Belt Drive: Durable power transmission system for extended service life
• Epicyclic Gearbox: Precision gear reduction for optimal torque multiplication and efficiency

Professional Installation Specifications

Physical Dimensions & Mounting

Overall Length (Mid-Stroke)	33.5 inches (851 mm)
Height	7.8 inches (198 mm)
Width	4.5 inches (114 mm)
Stroke Length	16 inches (400 mm)
Tiller Arm Radius	13.8 inches (350 mm)
Weight	Approximately 55 lbs (25 kg)

Electrical Specifications

Operating Voltage	12V DC
Current Draw	High performance for minimum consumption
Control Interface	ACU-400 Autopilot Control Unit compatible
Motor Type	Powerful electric motor with electromagnetic clutch

Autopilot System Integration

Evolution Autopilot Compatibility

The Type 2 Long Linear Drive integrates seamlessly with Raymarine's Evolution autopilot systems, controlled by the ACU-400 Actuator Control Unit. This combination provides intelligent steering algorithms, sea state responsiveness, and advanced navigation features for comprehensive vessel automation.

Mechanical Steering System Integration

• Direct Rudder Connection: Connects to rudder stock via independent tiller arm for precise control
• Below-Deck Installation: Protected mounting location reduces weather exposure and maintenance
• Universal Compatibility: Works with most mechanical steering systems and rudder configurations
• Accessory Fittings: Compatible with manufacturer-specific steering system components

Vessel Compatibility & Applications

Optimal Vessel Types

• Heavy Displacement Sailboats: Blue water cruising yachts up to 44,000 lbs
• Motor Yachts: Trawlers and displacement motorboats with mechanical steering
• Commercial Vessels: Workboats and fishing vessels requiring reliable autopilot systems
• Expedition Yachts: Long-range cruising vessels with demanding steering requirements

Steering System Requirements

Designed specifically for boats with existing mechanical steering systems including wheel steering with cable or hydraulic systems, direct tiller steering setups, and rack-and-pinion steering configurations. The linear drive provides the mechanical advantage necessary for controlling large rudders in heavy sea conditions.

Performance Benefits

Operational Advantages

• Quiet Operation: Smooth, low-noise performance maintains onboard comfort
• Precise Control: Accurate steering responses for optimal course keeping
• Weather Performance: Maintains control effectiveness in challenging sea conditions
• Energy Efficiency: Optimized power consumption for extended cruising range

Safety & Reliability Features

• Fail-Safe Design: Electromagnetic clutch ensures manual steering override capability
• Robust Construction: Marine-grade materials resist corrosion and environmental stress
• Proven Technology: Field-tested design with extensive commercial and recreational use
• Professional Support: Backed by Raymarine's global service network

Installation Considerations

Professional Installation Recommended

The Type 2 Long Linear Drive requires precise installation and calibration to achieve optimal performance. Professional installation ensures proper alignment, electrical connections, and system integration with existing navigation equipment.

Space Requirements

Below-deck installation requires adequate clearance for the 33.5-inch length and 16-inch stroke movement. Consider access for maintenance and the routing of control cables to the helm position.

Electrical Installation

Direct 12V DC connection to the vessel's electrical system with appropriate circuit protection. Integration with ACU-400 control unit requires proper cable routing and NMEA 2000 network connectivity.

Why Choose the Raymarine Type 2 Long Linear Drive

The M81132 Type 2 Long Linear Drive represents Raymarine's commitment to professional-grade marine autopilot systems, providing the robust performance required for heavy displacement vessels and demanding marine environments. Its combination of high thrust output, precise control, and reliable operation makes it the preferred choice for serious cruising and commercial applications.

With decades of marine autopilot expertise backing its design, the Type 2 Long Linear Drive delivers the dependable steering automation essential for safe passage-making and operational efficiency in all sea conditions.

Frequently Asked Questions

What size vessels can use this linear drive?

The Type 2 Long Linear Drive is designed for mechanically steered vessels up to 44,000 pounds (20,000 kg) displacement, making it suitable for large sailboats, motor yachts, and commercial vessels with substantial steering loads.

How does the electromagnetic clutch work?

The electromagnetic clutch automatically disengages when autopilot power is removed or in emergency situations, allowing immediate manual steering control without resistance from the drive mechanism.

Can this drive work with hydraulic steering systems?

No, the Type 2 Linear Drive is specifically designed for mechanical steering systems. Boats with hydraulic steering require Raymarine's hydraulic pump drives for autopilot integration.

What autopilot control units are compatible?

The M81132 is designed for use with Raymarine's ACU-400 Autopilot Control Unit and Evolution autopilot systems, providing advanced steering algorithms and navigation integration.

How often does the drive require maintenance?

The Type 2 Linear Drive is designed for minimal maintenance, with periodic inspection of electrical connections, lubrication points, and mechanical alignment recommended annually or per manufacturer specifications.

Boats with traditional hydraulic steering systems will use an Evolution autopilot driven by a hydraulic pump. The pump connects to the boat's hydraulic steering lines and allow the autopilot to steer the boat by controlling the flow of fluid through the boat's steering system. The hydraulic pump is controlled by the Evolution autopilot Actuator Control Unit.

Raymarine M81132 Attributes

• Compatibility: ACU-400 Autopilot Control Unit
• Drive Type: Mechanical Linear
• Stroke Length: 16 Inch
• Maximum Thrust: 1050 Pound
• Input Voltage: 12 Volt

Raymarine M81132 Features & Benefits

• Pump Connects To The Boat's Hydraulic Steering Lines And Allow The Autopilot To Steer The Boat By Controlling The Flow Of Fluid Through The Boat's Steering System
• Hydraulic Pump Is Controlled By The Evolution Autopilot Actuator Control Unit
• 1050 Pounds Maximum Thrust
• Easy To Install
• Limited 2 Year Warranty

Type 2 Long Linear Drive - 12V

Type 2 (long) Linear drive for mechanically steered vessels up to 44,000lb (20,000kg).

Designed for boats with existing mechanical steering systems. The mechanical linear drive provides powerful thrust, fast hardover times and quiet operation.

Features:

• Low backdrive force, to minimize the drives effect on the boats steering when the autopilot is in standby
  
• A powerful electric motor controlled by an electromagnetic fail-safe clutch,
  
• Using a high tensile belt drive and epicyclic gearbox
  
• High performance for minimum current consumption

Designed for ships with existing mechanical steering systems. The mechanical linear drive can provide strong thrust, fast hardening time and quiet operation. Features low...



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