Raymarine ROTARY DRIVE User Manual

Distributed by

Any reference to Raytheon or

RTN in this manual should be

interpreted as Raymarine.

The names Raytheon and RTN

are owned by the

Raytheon Company.

Rotary Drive

Installation Guide

Drives covered:

M81135 Type 1 Rotary Drive 12 V
M81136 Type 2 Rotary Drive 12 V
M81137 Type 2 Rotary Drive 24 V

Document number: 81174-3
March 2001

2 Rotary Drive - Installation Guide

Important information

Safety notices

WARNING: Product installation

This equipment must be installed and operated in accordance
with the instructions contained in this handbook. Failure to do so
could result in poor pr oduct performance, personal injury and/
or damage to your boat.

Because correct performance of the boat’s steering is critical for
safety , we STRONGLY RECOMME ND that an Authori zed
Raymarine Service Representative fits this product.

WARNING: Navigation aid

Although we have designed this pr oduct to be accurate and
reliable, many factors can affect its performance. As a result, it
should only be used as an aid to n avigation and should never
replace commons ense and navigational judgement. A lways
maintain a permanent watch so you can respond t o situations as
they develop.

EMC conformance

All Raymarine equipment and accessories are designed to the best
industry standards for use in the recreational marine environment.
The design and manufacture of Raymarine equipment and
accessories conform to the appropriate Electromagnetic
Compatibility (EMC) standards, but correct installation is required to
ensure that performance is not compromised.

Handbook information

T o the best of our knowledge, the information in this han dbook was
correct when it went to press. However, Raymarine cannot accept
liability for any inaccuracies or omissions it may contain. In addition,
our policy of continuous product improvement may change
specifications without notice. As a result, Raymarine cannot accept
liability for any differences between the product and the hand book.

© Raymarine Ltd 2001.

Rotary Drive - Installation Guide 3

Introduction

Product description

W elcome to the ins tallati on guide fo r the Raym arine rota ry drive .
This product is intended to operate the boat’ s steering mechanism as
part of a Raymarine autopilot system. It is designed for steering
systems that can be driven from the helm posit ion through a chain and
sprocket (for example: cable and rod steering systems).

The outstanding design of the Raymarine r otary drive unit provides
smooth, powerful autopilot-controlled steering w ith quiet operation.

The main parts of the drive a re:

• a rugged electric motor, that drives a precision epicyclic gearbox
via a high tensile drive belt

• an electromagnetic clutch that transmits high torque loads
without slipping

Motor, gearbox
and clutch assembly

Figure 1: Main parts of the rotary drive

Contents

This guide contains:

Drive shaft

Mounting foot

Product specifications page 4

1

Installation instructions page 5

2

Maintenance information page 15

3

Clutch cable

Motor cables

D5082-1

4 Rotary Drive - Installation Guide

Specifications

Drive dimensions

274 mm (10.8 in)

195 mm

(7.7 in)

256 mm (10 in)20 mm (0.8 in)

60 mm

184 mm

(7.2 in)

Figure 2: Drive dimensions

(2.4 in)

60 mm
(2.4 in)

2 slots to accept
12 mm (0.5 in) bolts

D5087-1

Drive specifications

Table 1: Drive specifications

Performance

(at nominal voltage)

Maximum boat
displacement

Peak output torque 20 Nm

Maximum shaft speed 33 rpm 33 rpm

Recommended hardover
to hardover time (no load)

Power consumption
(typical average)

Type 1 (T1)

M81135 (12 V)

Type 2 (T2)

M81136 (12 V)
M81137 (24 V)

10,000 kg
(22,000 lb)

20,000 kg
(44,000 lb)

34 Nm

(180 lb.in)

(300 lb.in)

10 sec 10 sec

24-48 W 60-84 W (12 V)

72-120 W (24 V)

Rotary Drive - Installation Guide 5

Table 1: Drive specifications (contd)

Other information (applies to Types 1 and 2)

protected for use in engine compartments

CE approvals - conforms to:
89/336/EC (EMC), EN60945:1997
94/25/EC (RCD), EN28846:1993

Installation instructions

Parts required

T o install this drive you will need:

• Parts supplied:

• rotary drive

• mounting foot

• spacing shims (x3)

• Additional parts:

• suitable securing bolts and lock washers/lock nuts (see

page 9)

• suitable sprockets and grub screws for drive and steering

system (see page 9)

• thread-locking compound

• suitable drive chain (see page 9)

• suitable cable and electrical connectors for the drive motor

and clutch (see page 13)

Note: Make sure you have obtained these additional parts before you
start installation.