VESCONITE Sliding Bearings for Daggerboards, , &

NO SWELLING SELF-LUBRICATING NO GALVANIC CORROSION SUSTAIN HIGH LOADS NO STICK-SLIP

LONG-LIFE, LOW-FRICTION SLIDES & BUSHINGS www.vesconite.com VESCONITE THE PERFECT SLIDING SURFACE

Retractable daggerboards, centreboards, keels and rudders are sought by thrill-seekers cruising at speeds with their hulls rising from the water, and by those looking for better leeway resistance and pointing ability.

Much of their functionality depends on high-quality sliding bearings. Vesconite low- friction sliding polymer bearings - the ‘boxes’ or ‘trunks’ through which these moving parts pass - are the high performance partners to daggerboards, centreboards, lifting keels, and retractable bearings.

Proven world-wide, Vesconite has been used for sliding bearings on Gunboat and HH Catamarans and even America’s Cup yachts, among others. “THE CRUISER HAS ONLY HAD VESCONITE DAGGERBOARD BEARINGS AND WE HAVE HAD GREAT EXPERIENCES WITH THEM… THE NEW BEARINGS OPERATE NOISELESSLY AND SMOOTHLY. THERE WAS ZERO WEAR” Travis McGarry, captain of the 66 foot, 22 ton Gunboat catamaran, The Slim THE ADVANTAGES OF USING VESCONITE SLIDING BEARINGS

ULTRA-LOW NO HIGH LOAD NO SWELL OR COEFFICIENT STICK-SLIP CAPACITY SOFTENING OF FRICTION

Vesconite’s internal The static and Vesconite bear- Daggerboards and lubricants gives dynamic coef- ings have high retractable rudders friction as low as ficients of friction load capacity that need to fit well into PTFE even under do not differ can support the their trunks with- high loads. This significantly, extreme loads out the danger of makes Vesconite meaning there is exerted on the bearings seizing. desirable for no sliding sticki- daggerboards, Vesconite has neg- sliding bearings. ness. This reduces keels and rudders ligible swell and is wear of parts even as the boats move dimensionally under load. This through the water. stable, so small results in smooth bearing clearances actions when can be maintained. trimming a vessel. VESCONITE VESCONITE MATERIAL PROPERTIES STANDARD HILUBE

Density 1.38 1.38

Hardness (Shore D) 82 82

92 MPa 99 MPa Compressive yield strength VESCONITE SLIDING BEARINGS 13,300 psi 14,300 psi 30 MPa 30 MPa Recommended design loading 4,350 psi 4,350 psi Water absorption after 28 days immersion 0.1% 0.1% (ASTM D570) 120ºC 120ºC Maximum operating temperature (dry) 250ºF 250ºF Maximum operating temperature 65ºC 65ºC (immersed in water or oil) 150ºF 150ºF Friction coefficient 0.15 0.09 (dry on polished steel)

NO GALVANIC NO GREASE-FREE EXTENDED CORROSION DELAMINATION OPERATION WEAR LIFE

Vesconite does Vesconite is Internally-lubricated Vesconite offers not suffer from homogenous, Vesconite materi- exceptional wear galvanic corrosion meaning no als do not require life and resists salt like metallic ball delamination in greasing. The lack and abrasives. and roller bear- water over time. of grease avoids Vesconite may be ings. Vesconite mess and ensures used to replace can also act as a no pollution risk to ball and roller corrosion isolator marine wildlife and bearings. between dissimilar ecosystems. metal components. ORDERING VESCONITE BEARINGS

OPTION ONE: MACHINE YOUR OWN SLIDING BEARINGS WITH OUR PLATE STOCK RANGE

Vesconite machines easily on metal and woodworking equipment and can be sawed, milled, turned, routed, planed or drilled. Vesconite and Vesconite Hilube plates are stocked in a wide range of sizes for immediate dispatch. (Contact us for special requests.)

Plate size Plate thickness

Metric Imperial Metric Imperial (mm) (inches) (mm) (inches) 1,000 X 200 39 X 8 2 - 100 0.08 - 4

1,000 X 600 39 X 24 10 - 150 0.39 - 6

1,000 X 1,000 39 X 39 25 - 40 1 - 1.5

500 X 400 19.5 X 15.75 2 - 8 0.08 - 0.31

Special lengths up to 3 meters (118’’) are available and plates can be cut to custom sizes if required. ORDERING VESCONITE BEARINGS

OPTION TWO: ORDER CUSTOM MACHINED COMPONENTS

Vesconite Bearings provides fully-finished machined daggerboard, , and retractable rudder bearings.

These bearings can have complex designs and require suitable expertise and specialised equipment. The Vesconite Bearings CNC workshop have more than 80 CNC machines, including 2-, 3-, 4- and 5-axis CNC machines.

Our 5-axis machining capabilities enable us to take on challenging precision machining projects. Vesconite Bearings is ISO 9001:2015 certified.

To see a range of short videos illustrating our machining capabilities visit www.vesconite.com Founded in 1958, Vesconite Bearings is a world-leading manufacturer of low-friction, low-wear bearing materials for a wide range of industries. These include the pump, ag- riculture, railways, mining, heavy-transport, hydro, renewable-energy, earthmoving, marine and construction industries.

The story of Vesconite goes back to 1968, when founder and chemical engineer Alain Leger began the research and development of a polymer bearing material for use in the ultra-deep gold mines of South Africa – a notoriously harsh environment character- ised by extreme dirt and wetness.

The Vesconite Bearings factory spans 20,000 m2 and features advanced extrusion, injection-moulding and CNC machining facilities. Both standard stock (rods, bushings and plates) and high- precision machined parts are produced. The company is ISO 9001:2015 certified.

EXTENSIVE SHORT QUICK PRODUCT LEAD GLOBAL RANGE TIMES DELIVERY

USA +1 713 574 7255 77 Mimetes Street UK +44 20 3239 9044 Denver EU +31 303 200 200 Johannesburg New Zealand +64 20 4011 3659 2094 Australia +61 3 9796 4098 South Africa Singapore +65 6481 8728 Argentina +54 9 1167247641 Worldwide +27 11 616 1111