Harken 50.2 ST EL/HY Manual

Installation and Maintenance Manual
MRW-F
Powered Radial Winch
50.2 ST EL/HY

2
Radial Winch 50.2 ST EL/HY
Installation and Maintenance Manual - Mod.F
Index
Introduction 3
Technical characteristics 3
Performance data 3
Weight 4
Maximum working load 4
Outline 5
Installation 6
Procedure 1 7
Procedure 2 8
Winch installation procedure 10
Positioning the self-tailing arm 11
Motor installation procedure 11
Electric wiring diagrams 12
Hydraulic connections diagram 14
Maintenance 15
Washing 15
Maintenance table 15
Disassembly procedure 15
Exploded view with maintenance products 19
Assembly 20
Harken®limited worldwide warranty 21
Ordering spare parts 21
Exploded view 22
Radial Winch 50.2 STA, STC, STCW EL/HY 22
Parts List 24
Radial Winch 50.2 STA EL/HY 24
Radial Winch 50.2 STC EL/HY 25
Radial Winch 50.2 STCW EL/HY 26
Exploded view 27
Radial Winch 50.2 STBBB, STCCC EL/HY 27
Parts List 29
Radial Winch 50.2 STBBB EL/HY 29
Radial Winch 50.2 STCCC EL/HY 30
Exploded view and Parts List 31
Horizontal electric motor 12V / 24V 31
Vertical electric motor 12V / 24V 32
Hydraulic motor 33

3
Radial Winch 50.2 ST EL/HY
Installation and Maintenance Manual - Mod.F
Introduction
This manual gives technical information on winch installation and maintenance, including
disassembling and reassembling.
This information is DESTINED EXCLUSIVELY for specialised personnel or expert users.
Installation, disassembling and reassembling of the winch by personnel who are not experts may
cause serious damage to users and those in the vicinity of the winch.
Harken®accepts no responsibility for defective installation or reassembly of its winches.
In case of doubt the Harken®Tech Service is at your disposal at [e-mail]
This Manual is available only in English. If you do not fully understand the English language, do not
carry out the operations described in this Manual.
NOTICE
To use and understand this manual, user must refer to other documents, available on web site
www.harken.com and listed below:
- The Dual Funtion Control Box user manual, for the use of the Dual Function Control Box.
- The Dual Funtion Control Box installation manual, for all details, informations, wiring schemes and
warnings about its installation
Technical characteristics
Power ratio Gear ratio
1st speed 11,10 : 1 2,40 : 1
2nd speed 50,40 : 1 10,90 : 1
The theoretical power ratio does not take friction into account.
Performance data
Winch 50.2 ST EL (electric)
horizontal motor vertical motor
12 V (1500 W) 24 V (2000 W) 12 V (1500 W) 24 V (2000 W)
1st
speed
2nd
speed
1st
speed
2nd
speed
1st
speed
2nd
speed
1st
speed
2nd
speed
line speed (m/min)** 32,7 7,2 39,4 8,7 37,4 8,2 45,1 9,9
max load (Kg) 315 1450 315 1450 315 1450 315 1450
**Line speed is measured with no load
motor nominal power
(W)
current absorption at
winch MWL (A)
12 V 24 V 12 V 24 V
winch 50.2 ST EL horizontal 1500 2000 230 140
vertical 1500 2000 225 125
Introduction - Technical characteristics - Outline

4
Radial Winch 50.2 ST EL/HY
Installation and Maintenance Manual - Mod.F
Winch 50.2 ST HY (hydraulic)
1st speed 2nd speed
line speed (m/min)* 55,9 12,3
max load (Kg)*** 315 1450
* at 20 l/min oil ow (5,28 Gal/min)
*** at 130 bar at 20 l/min
NOTE
The ratio of the line load - pressure is evaluated at nominal ow rate.
The performance is evaluated measuring the pressure and ow on the motor ports.
The performance data are based on oil with a viscosity of 35mm2/s [165 SUS] and
temperature of 50°C [120°F].
Weight
ST A EH ST C/CW EH ST A EV ST C/CW EV ST A H ST C/CW H
weight (Kg) 16,8 20,0 17,5 20,7 13,5 16,7
ST BBB EH ST CCC EH ST BBB EV ST CCC EV ST BBB H ST CCC H
weight (Kg) 21,2 21,2 21,9 21,9 17,9 17,9
Versions:
A = drum in anodised aluminium
C = drum in chrome bronze
CW = chrome/white
BBB = all bronze
CCC = All-Chrome bronze
EH = horizontal electric winch
EV = vertical electric winch
H = vertical hydraulic winch
Maximum working load
WARNING!
The maximum working load (MWL) for the 50.2 ST Radial Winch is 1450 Kg (3196 lb)
Subjecting the winch to loads above the maximum working load can cause the winch to fail or
pull off the deck suddenly and unexpectedly during high loads causing severe injury or death.

5
Radial Winch 50.2 ST EL/HY
Installation and Maintenance Manual - Mod.F
Outline
Vertical electric motor (12 V / 24 V)
Hydraulic motor
Winch 50.2 ST EL/HY Horizontal electric motor (12 V / 24 V)
Winch 50 ST EL/HY Winch 50Winch 50 ST Winch 50 ST EL Ho Winch 50 ST EL Vt Winch 50 ST HY
212,4
Ø111
96
Ø194
190
96
Ø194
Ø111
212,4
Ø111
96
Ø194
212,4
Ø111
96
Ø194
212,4
Ø111
96
Ø194
212,4
Ø111
96
Ø194
181
69
394
140
130
234
Line entry height
Winch 50 ST EL/HY Winch 50Winch 50 ST Winch 50 ST EL Ho Winch 50 ST EL Vt Winch 50 ST HY
212,4
Ø111
96
Ø194
190
96
Ø194
Ø111
212,4
Ø111
96
Ø194
212,4
Ø111
96
Ø194
212,4
Ø111
96
Ø194
212,4
Ø111
96
Ø194
181
69
394
140
130
234
Line entry height
Winch 50 ST EL/HY Winch 50Winch 50 ST Winch 50 ST EL Ho Winch 50 ST EL Vt Winch 50 ST HY
212,4
Ø111
96
Ø194
190
96
Ø194
Ø111
212,4
Ø111
96
Ø194
212,4
Ø111
96
Ø194
212,4
Ø111
96
Ø194
212,4
Ø111
96
Ø194
181
69
394
140
130
234
Line entry height
Winch 50 ST EL/HY Winch 50Winch 50 ST Winch 50 ST EL Ho Winch 50 ST EL Vt Winch 50 ST HY
212,4
Ø111
96
Ø194
190
96
Ø194
Ø111
212,4
Ø111
96
Ø194
212,4
Ø111
96
Ø194
212,4
Ø111
96
Ø194
212,4
Ø111
96
Ø194
181
69
394
140
130
234
Line entry height

6
Radial Winch 50.2 ST EL/HY
Installation and Maintenance Manual - Mod.F
Installation
The winch must be installed on a at area of the deck, reinforced if necessary to bear a load equal
to at least twice the maximum working load of the winch.
It is the installer's responsibility to carry out all structural tests needed to ensure that the deck can
bear the load.
Harken®does not supply the screws needed to install the winch since these may vary depending
on the deck on which it is to be installed.
It is the installer's responsibility to choose the correct screws taking account of the loads they will
have to bear.
Harken®assumes no responsibility for incorrect installation of its winches or for an incorrect choice
of mounting screws.
DANGER!
Incorrect installation of the winch may cause severe injury or death. Consult the yard that built
the boat in the case of doubt over the correct positioning of the winch.
WARNING!
Failure to use the correct number and type of mounting fasteners or failure to ensure the
correct deck strength can result in the winch pulling off the deck suddenly and unexpectedly
during high loads causing severe injury or death.
WARNING!
Verify the entry angle of the sheet. This must be 8° with tolerance of
±2°, to avoid sheet overrides and damaging the winch or making the
winch inoperable leading to loss of control of the boat which can lead to
severe injury or death.
WARNING!
Mount the winch on the deck so that the drive gear is positioned where
the sheet enters the winch drum.
Incorrect position of drive gear can weaken winch leading to failure
which can cause an accident leading to severe injury or death.
NOTICE
For winch STA, STC and STCW versions only
You can find the icon on the skirt to identify
the drive gear position.
After correctly positioning the nal drive gear with respect to the load, check that the motor,
gearing, electrical wiring and/or hydraulic pipes can be housed below decks. To help nd the
optimal compromise, remember that, to make the installation of the motor easier, It can be coupled
to the winch in different positions.
Once you have decided the correct mounting position for the winch on the deck and checked the
space available below deck, proceed with the installation.
drive gear
SHEET
8°
Installation

7
Radial Winch 50.2 ST EL/HY
Installation and Maintenance Manual - Mod.F
The winch can be installed following one of the two procedures below (Procedure1 or Procedure 2):
Procedure 1
To install the winch, remove the drum and use Socket Head (SH) bolts.
Tools needed: One medium at-bladed screwdriver
To identify the various parts, refer to the exploded view at the end of this Manual.
Torque to apply when assembling
1. Pull out the disconnect rod n°32 2. Unscrew the central screw ( 2Nm/18 in-lb)
3. Slide off the assy socket n°31 and the cover
n°30.
Pay attention to the o-ring in the socket.
4. Unscrew the three screws n°29
(4Nm/35 in-lb)

8
Radial Winch 50.2 ST EL/HY
Installation and Maintenance Manual - Mod.F
5. Remove the self-tailing arm n°28 by rotating
and lifting it.
1. Remove the skirt n°2 with the help of the screw-
driver placed as shown by the symbol
6. Lift off the drum n°24
2.Take off the base n°2
Winch STA, STC and STCW versions:
Install the winch on the deck in the position you have chosen, keeping in mind the limits described on
page 4 and using socket head (SH) bolts.
Winch STBBB and STCCC versions:
Install the winch on the deck in the position you have chosen, keeping in mind the limits described on
page 4 and using socket head (SH) bolts or hexagonal headed bolts (HH).
Procedure 2 (not pertinent for ST BBB/CCC versions)
To install, remove the winch skirt and use hexagonal headed bolts.
Tools needed: One medium at-bladed screwdriver
To identify the various parts, refer to the exploded view at the end of this Manual.
See the limits described on page 6 and using socket head (SH) bolts.
Torque to apply when assembling

9
Radial Winch 50.2 ST EL/HY
Installation and Maintenance Manual - Mod.F
3. Position the 5 M8 hexagonal headed bolts
in their holes
4. Reposition the skirt n°2 in its housing 5. Press down the skirt to position it correctly
NOTICE
Make sure the skirt is correctly clipped on to the base of the winch.
Install the winch on the deck in the position you have chosen, keeping in mind the limits described
on page 6 and using hexagonal headed (HH) bolts.

10
Radial Winch 50.2 ST EL/HY
Installation and Maintenance Manual - Mod.F
Winch installation procedure
Carry out Procedure 1 or Procedure 2,then install the winch on the deck in the chosen position.
NOTICE
Before drilling the deck, check the space available below deck for the ange and the motor
A. Position the base of the winch on the deck and mark the position of the holes or use the
drilling cut-out template at the point where you have decided to place the winch.
Below is a reduced scale diagram.
Ø150
46°
46°
64°
70°
70°
64°
Winach outside Ø194
final pinion
position
Ø8
n°5
Ø80 cut out for
powered winches
The drilling cut out template is available on the Harken®website, www.harken.com
B. Remove the winch and drill the ve 8.2 mm and a 80 mm diameter holes.
C. Bolt the base of the winch to the deck using ve M8 bolts (not supplied by Harken®) as
described at Procedure 1 or Procedure 2, correctly chosen for the thickness and type of the boat
deck. Consult the yard that built the boat in case of doubt.
WARNING!
To install the winch on the deck, use only bolts in A4 stainless steel (DIN 267 part11).
Bolts made of other materials may not have sufficient strength or may corrode which can result in
winch pulling off deck suddenly and unexpectedly during high loads causing severe injury or death.
NOTICE
To mount winches on the deck, do not use countersunk bolts.
D. Fill the mounting holes with a suitable marine sealant.
E. Remove the excess adhesive/sealant from the holes and base drainage channels
F. Reassemble the winch following the steps in Procedure 1 or Procedure 2 in the reverse order,
and apply the products indicated in the section on maintenance.