2020 Ronstan Sailboat Hardware Catalogue - VIEW CATALOGUE

Custom Products

PHOTO CREDIT:© Najad Yachts of Sweden

B100-0789 Series 100 plain bearing sheave

Product Type:

Blocks

Part Number:

B100-0789

MWL:

4000 kg (8818 lb)

BL:

8000 kg (17637 lb)

Weight:

0.413 kg (0.910 lb)

Yacht Model:

SWS-110

Designer:

Farr Y Design /Nauta Design

Builder:

Southern Wind Shipyard Pty.Ltd.

Length:

33.6m (110 ft)

Displacement:

76 7000 kg

P:

40.07m (88.3 ft)

E:

13.81m (30.4 ft)

I:

40.49m (89.26 ft)

J:

11.9m (26.23 ft)

Product Features:

This series 100 plain bearing sheave has been designed to handle a small deflection of the fixed backstay (less than 30 degree)on the SWS 110. Due to the small deflection angle only a relatively small diameter of 100mm is required but the width of the sheave had to be wide enough to handle the large diameter rope used on this fixed backstay. The sheave has been designed to run in a sheave box built by the boatbuilder into the boat structure,the required width of the sides of this box being 41.6/41.8mm. The sheave is designed to run on a central bearing tube (also supplied by the boatbuilder) of diameter 30.8/31.0mm. The sheave is fitted with torlon ball bearings to handle the side thrust and to help the sheave run smoothly.