Captive Reel Winches

THIS WINCH IS NOT APPROVED FOR LIFTING PEOPLE.

Configuration | Your layout | Standard build | Typical options | Testing and setting | Materials | Flexible Installation | Factory Testing | Guide to Power and Sheet Size | Guide to Active Line Storage | Information Required for Selection and Quotation    

 

Captive Sheet winches built by James Nilsson - Winchmakers are noted for straight forward and rugged construction. Each set of winches, based on a range of standard frame sizes, is customized to suit individual specifications. Working with the yacht designer and builder, winches are sized to suit height and length preferences. To conserve space, winches are tailored to hold the exact amount and size of sheet for each duty.

Motors, gearboxes and brakes are selected so the best use can be made of the hydraulic systems aboard. Two speed motors are often used to allow best speeds and highest power to be automatically selected in response to demand.

The straight forward "single layer" design elliminates "cut through" on the drum. High grade materials ensure that James Nilsson built winches give many years of reliable service. All winches are "bolt up" construction with accessible fastenings, jack points and other features allowing easier maintenance when necessary.

Free standing tensioners and feeders can be locally or remotely mounted to give best control of the sheet under all operating conditions.

Each winch set is individually tested at the factory on an especially developed dynamic and static test facility.

James Nilsson Ltd., specialists in winch design and manufacture since 1965, have manufactured Captive Sheet Winches since 1991. The wealth of experience has led to the current designs being leaders in their class for quality and reliability.

 

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Configuration:

There are many builds that can be supplied to allow the optimum installation that makes best use of the space available, direction of feeds etc. The tensioner or feeder can be mounted in a number of positions and angles.
 

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Your layout:

 
Email us a DXF, DWG or CADKEY PRT file showing your preferred layout or details of the site so we see how we may best use the space. Email to sales@jamesnilsson.co.nz

 

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Standard build includes:

• Main winch with gearbox, brake, motor and feeder mechanism.
• Proximity sensors to signal end of travel. (Signal must be incorporated into main control by systems engineer).
• Proximity sensors ensure winch stops if over-travelled. (Signal must be incorporated into main control by systems engineer).
• Counterbalance valves
• Brake control shuttle valve
• Tensioner and feeder flow control valve (where necessary)

 

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Typical options include:

• Tensioner and / or feeder
• Main control solenoid valves
• Emergency brake release port valve
• Emergency release manual pump 
• Additional position indicator outputs
• Slack line sensors
• Hydraulic power packs, control systems and systems design.

 

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Testing and setting:

Each winch is dynamically tested through out the specified operating range under load. The brake is proof tested for holding capacity and settings. The tensioner and feeder settings are adjusted and tested. Cycle proof testing is carried out by arrangement.
 

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Materials:

Our standard gearboxes, motors and hydraulic controls are supplied by BREVINI. The BREVINI drives are heavy duty industrial class equipment supported world wide. General materials of construction of the winch components are high tensile marine grade aluminium, 316 stainless steel and some synthetic materials selected for their performance and long life under arduous conditions. Plain bearings are used in difficult to access positions and industrial class bearings are sealed.
 

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Flexible Installation:

Winches and tensioners can be supplied in LH or RH build. The separately mounted tensioner and / or feeder allows flexibility in the installation with many options possible. We may be able to assist with suggestions.

 

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Factory Testing:

Each winch set is individually tested at the factory on an especially developed dynamic and static test facility.
 

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Guide to Power and Sheet Size:

Model	Pull Kg/Lbs.	Hold Kg / Lbs.	Sheet range mm / inches
CR22SL	1500 / 3300	1800 / 4000	10 - 14 / 3/8" - 9/16"
CR27SL	2200 / 4800	2500 / 5500	10 - 16 / 3/8" - 5/8"
CR33SLLT	400 / 880	2400 / 5300	12 / 1/2"
CR33SL	4000 / 9000	5000 / 11000	12 - 20 / 1/2" - 3/4"
CR33SLHD	5000 / 11000	7000 / 15000	12 - 20 / 1/2" - 3/4"
CR40SL	7000 / 15500	10000 / 22000	18 - 24 / 3/4" - 1"
CR40SLHD	11000 / 24000	13000 / 28000	18 - 26 / 5/8" - 1"
CR50SL	12000 / 26000	14000 / 30000	18 - 30 / 3/4" - 1 1/8"
CR50SLHD	15000 / 33000	18000 / 39000	18 - 30 / 3/4" - 1 1/8"

Load figures and converted sizes are a guide only. Individual winches are customized to application.
 

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Guide to Active Line Storage:

Sheet	CR22SL	CR27SL	CR33SL	CR40SL	CR50SL
10mm	20m	40m	-------	-------	-------
12mm	17m	35m	65m	-------	-------
14mm	14m	30m	56m	-------	-------
16mm	--------	27m	49m	-------	-------
18mm	--------	--------	43m	74m	95m
20mm	--------	--------	39m	66m	85m
22mm	--------	--------	--------	60m	77m
24mm	--------	--------	--------	55m	70m
26mm	-------	-------	-------	50m	65m
28mm	-------	-------	-------	-------	60m
30mm	-------	-------	-------	-------	56m

Storage figures are a guide only. Individual winches are customized to application.
 

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Information Required for Selection and Quotation:

 

• Project name (Boat or project name, designer or builders reference)
• Duty for each winch (Main sheet, main halyard etc.)
• Sheet size for each winch (mm or Inches)
• Active length for each winch (Amount of sheet that pays on and off drum. We allow for extra bitter end wraps and safety wraps in the winch design)
• Maximum dynamic pull required at winch (Kgs or Lbs) Allow at least 5% loss through tensioner and each turning block in proposed system.
• Maximum brake hold required (Kgs or Lbs)
• Any requirements on speed of winch (Metre / Min of Feet / Min)
• Available oil pressure (bar or psi)
• Available oil flow (litre/min or usg/min)
• Any other information that is relevant

Full customized drawings are supplied for each application before build starts.

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