Harken Yacht Equipment Catalog OnLine

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Winches > Drive Components

After the pedestal type has been chosen to match a boat's needs, proper drive components can be specified.

Gear Boxes

The bevel gear box is the basic building block of the drive system. Harken offers two versions that work with belt drive pedestals. The B600 and carbon gear boxes can handle input from more than two people. The B604, which is smaller, is designed for a maximum of two people.

The B600 and B604 gear box housings are made of a high-strength aluminum alloy that is Hardkote anodized for maximum durability. Gears, shafts, and rollers are 17-4 PH stainless steel. The lightweight carbon gear box was originally designed for America's Cup yachts, but can be used on any boat where the rules allow. This gear box features a carbon fiber/epoxy housing. High-strength thermoplastic bearings as well as titanium and aluminum components are used to save weight.

All gear boxes may be supplied with a single shaft as pictured or with the horizontal shaft protruding from both sides. Shafts may be connected directly to a drive shaft or a disconnect clutch may be added as shown.

Custom gear boxes are also available with angled shafts for use with the shaft drive pedestal shown on the previous page.

There are many drive options available. Contact your Harken winch specialist for details.

Drive Shafts

Harken offers two types of drive shafts. Extruded splined aluminum drive shafts may be cut to length. Custom made tubular drive shafts are available with bonded end fittings in carbon fiber epoxy. Shaft choice is determined by load, cost, and weight considerations. Your Harken representative can provide details on the best drive shaft for your boat.

Disconnects

System disconnects can be activated with either levers or a two-position push button. These may both be operated by either hand or foot, though the lever is usually supplied for hand operation and the button is normally operated by foot. The illustrations show the push buttons actuating disconnects on a below-deck-mounted B600 gear box. The levers are shown on a mid-drive belt pedestal.

Support Shafts

To properly space and support a gear box beneath a winch, Harken supplies tubes for both the B600 and B604 series gear boxes. Tubes are made to length from high-strength aluminum alloy, hardkoted; or carbon fiber epoxy with bonded ends.

Universal Joints

Gear boxes are connected to other gear boxes and pedestals by drive shafts fitted with either a universal joint or a coupling at each end. Our spherical couplings are extremely light but may only be used where the shafts are in-line to take up the small angles resultant for mounting tolerance of flexing of the boat. Our high angle universal joint is made of aluminum with 17-4 stainless pins, making it very strong and able to operate efficiently at shaft angles up to 20╟. Support shaft Universal Joint

IMS-legal
This lightweight carbon gear box was originally designed for America's Cup yachts, but can be used on any boat where the rules allow. A round-shaped spline is available to handle small angles

Bevel gear boxes

Drive shafts
Disconnects
Support shaft
Universal Joint

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