Page 365 - Lewmar

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Rudder Bearing Solutions

Lewmar’s rudder bearings come in two basic type – plain roller and self-aligning roller. We can provide a rudder bearing
solution for any yacht, whether it is tiller steer or a Grand Prix racer.

Typical Bearing Installation
A. Lower bearings should be positioned so that the seals are above the water line. A gaitor
may also be used for added security against leaks.
B. Upper and Lower bearings should be spaced apart as far as practically possible to reduce
loading on the rollers.
C. A removable deck cover may be used for quick fi tting of an emergency tiller.
D. For tiller steered yachts seals may be incorporated into the upper bearing to prevent
water ingress from above deck into the boat.

Upper Bearings
• Manufactured in 6082 aluminium and anodised • Model with a deck cover offers integral locking ring and vertical
thrust race
• Suit rudder stock diameters 50-109mm (2-4 5/16 in) • No grease or maintenance required
• Easy to install fl anged housing

Plain roller bearings Self-aligning roller bearings
Features precision Delrin Bearings includes self-aligning
rollers with low friction ball and precision Delrin
co-effi cient. rollers.
Illustration shows a plain roller
bearing with deck cover and
thrust race.

Lower Bearings
• Suit rudder shock diameters 50mm-109mm (2-4 5/16 in) • No grease or maintenance required

Aluminium roller bearings
• Manufactured in 6082 aluminium and anodised
• Accepts sealing system for lip seals or rudder tube and gaitor
• Low friction co-effi cient

• Available in self-aligning version

Locking Rings Lip Seals
• Used with upper bearings A • Precision fi t seals provide protection
without integral locking ring against water ingress with minimal
• Manufactured in 6082 friction
aluminium and anodised • Can be used in conjunction with a
• Suit rudder stock diameters gaitor for added protection
40mm-110mm ( 1 ½” – 4 5/16”) • Sizes available to suit any rudder stock
• Stainless set screws secure A diameter
locking ring to rudder stock A-A • Manufactured in tough polyurethane
material

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