About Our bearings

TYPE 1 BEARINGS

General features

Type 1 Bearings are designed to fit boats equipped with stainless steel rudder stocks.

These non watertight bearings require adapted rudder trunks,
The rudder bearings consist in an Ertalyte inner ball to fit the diameter of the rudder stocks and inserted in an aluminium housing,
The Ertalyte inner balls are designed to rotate around metal stocks. On boats equipped with composite stocks bonding metallic sleeve is require,
The aluminium bodies of the bearings are anodized to prevent corrosion.

On request seals can be fitted to the inner balls

JP3 Type 1 rudder bearings are approved by BUREAU VERITAS (N° BE96JP0001) and CE (N° 6564/4897/B0/0).

Installation

Light and strong, the type 1 bearings do not require any lubrication to work,
The slot of the rudder bearings must be installed aligned with the hull axis,
There is several options for the installation: the bearings can be bolted to the deck, or laminated.

Maintenance

Type 1 bearings need no maintenance,
The type 1 Bearings require cleaning with soapy water to ensure proper functioning. This is to be done every 5 years at least.

10.10

Bearings to be inserted into a rudder trunk and bonded with polyurethane sealant.

10.11

The outer surface of its aluminium body is machine grooved in order to get a good bonding when the bearings are laminated to the hull.

These bearings can be use either in upper or lower position.

The installation of rudder trunks is required when 10.11 bearings are used as lower bearings.

10.13

Bearings to be bolted to the deck.

Can be used either as upper or lower bearings.

Watertight caps are available.

10.14

Bearings especially used for production boats.

Only for use as a lower bearings.

Can be topped by a rudder trunk bonded with polyurethane sealant. It can be tight to a bolt that is welded to an aluminium rudder trunck.

For mass produced boats:
A plug is positioned on the hull mould allowing the conical housing of the bearing to be laminated at the same time as the hull, which is time saving.

For installation of the bearing during a refit we provide a conical housing to be laminated to the bottom of the hull.

The advantages given by this system:

Precise positioning in hulls,
Strong bearing housing fabricated together with the hull providing a homogeneous structure,
No other lamination is required,
Time saving for bearings and rudder trunks installation,
This type of installation reduces the risk of misaligning of the bearings,
Bearing installation: a little cord of sealant and the threaded ring are enough.

15.11

Bearings with 10.11 housing and stainless steel needle bearings inside the inner ball.

Grooved housing surface for easy lamination.

Can be used either in upper or lower position.

The installation of rudder trunks is required when 15.11 bearings are used as lower bearings.

Available in diameter 34-39-44-49-54-59-64-69-79 ( in mm).

15.13

Bearings with 10.11 housing and stainless steel needle bearings inside the inner ball

Bearings to be bolted to the deck.

Can be used either as upper or lower bearings.

Watertight caps are available.

Available in diameter 34-39-44-49-54-59-64-69-79 ( in mm).

15.14

Bearings with 10.14 housing and stainless steel needle bearing inside the inner ball.

Bearings especially used for production boats.

Can be topped by a rudder trunk bonded with polyurethane sealant. It can be tight to a bolt that is welded to an aluminium rudder trunck.

It can be fastened to a bolt that is either welded to an aluminium rudder trunck or bonded to an epoxy rudder trunck.

Available in diameter 34-39-44-49-54-59-64-69-79 (in mm).
Similar assembly as 10.14 bearings.

17.11

Similar to 15.11 bearings with Ertalyte or PEEK needles.

Suitable for aluminium or composite rudder stocks.

TYPE 2 BEARINGS

General features

The Type 2 bearings are a upper bearings especially designed for long-distance sailing boats with aluminium or stainless steel rudder stocks.

The Type 2 bearings will hold heavy axial and radial loads. It is mainly installed on metallic rudder stocks (stainless steel, titanium, aluminium),
The housing is made of anodised aluminium,
There inner balls are in Ertalyte with 2 rows of plastic balls holding the rudder stocks,
The adjustment of the height of the rudders is achieved with threaded collars located on the rudder stocks,
These rudder bearings are watertight,
They allow plugging emergency tillers,
Mounting and dismounting the rudder assembly is very easy.

Use as upper bearings.

Bolt-on bearings.

Adjusting the rudder heights from below.

20.12

Use as upper bearings.

Bolt-on bearings.

Adjusting the rudder heights from above.

20.13

Use as upper bearings.

Flanged bearings with watertight cap.

Adjusting the rudder heights from below.

20.14

TYPE 3 BEARINGS

General features

Type 3 rudder bearings are designed specifically to fit stainless steel or titanium rudder stocks.

A stainless steel needle bearing is inserted in the Ertalyte inner ball, which eliminate frictions.
2 Lip seals and 2 x-ring seals are fitted to ensure perfect watertightness.
Installation in composite or aluminum housing is recommended.
It can be flanged on request.

Bearings to be inserted into a 7° conical housing.

30.02

Bearings to be inserted into a 1° conical housing

30.04

Bearings to be bolted into a housing.

31.12

TYPE 4 BEARINGS

General features

The Type 4 bearings are designed to equip composite and aluminium rudder stocks. Their functioning is ensured by 1, 2 or 3 rows of “barrel” rollers.

100% WATERPROOF BEARINGS

V-Seals are located in the upper and lower seal carriers of the bearings, perfectly protected.
O-rings ensure the sealing between the rudder stocks and the bearings and between the housings and the bearings.

CORROSION RESISTANT

Both outer race and inner race are made from aluminium bars and protected by anodizing.

ELIMINATE ELECTROLYSIS

For any installation on a carbon boat, and to avoid any electrolysis problems, the lower seal carriers of the lower bearings are always made in polyacetal (POM)

METAL SLEEVES ARE USELESS

THESE BEARINGS CAN HOLD AXIAL LOADS

LIGHTWEIGHT BEARINGS

The bearings are adjustable in resistance and weight for identical inner diameters according to the number of rows of rollers,
Lighter “racing” version on request,
Type 4 bearings accept a maximum deflection angle of the rudder stock of +/- 3.5°.