Type 2 as upper rudder bearing
The bearing features a spherical Ertalyte® knuckle located between two rows of mini rollers fitted to an inner sleeve. This inner assembly is fitted within a precision-machined aluminium
Typically the Type 2 bearing is used as a top bearing in
conjunction with either a Type 3 or Type 5 lower bearing.
2 bearing can only be used with metallic rudderstocks.
The spherical knuckle allows the bearing to self-align while the rudderstock rotates
within the bearing.
The rudderstock is located into bearing by a threaded inner sleeve.
This offers complete support of the rudder and allows adjustment rudder height.
As the rudderstock and bearing are assembled together it is highly recommended
that JP3 manufacture the rudderstocks to ensure the correct fit.
Bearings are available in any size for 30mm to 110mm in 10mm increments. Inner sleeves
are made can be bored any size to suit the rudderstock.
Bearings are available in 3 housing styles to suit all installation
Aluminium bodies are anodised in our in-house anodisation plant to ensure quality and
prevent corrosive action.
3 as lower rudder bearing
The type 3 bearing is mostly used as lower bearing for powerboats fitted with stainless steel or titanium rudder
The bearing incorporates needle rollers and needles.
Bearings can be made to suit any stock size.
5 as upper bearing or lower rudder bearing
Designed specifically for MOTOR YACHTS with metallic
rudderstock the Type
5 bearing is an all
steel heavy-duty spherical roller bearing.
The spherical roller bearing is housed in an oil filled aluminum alloy
housing and is protected a triple quad ring seals in which seal carrier allow up to 1.5 deg of stock deflection.
Type 5 bearings are able to withstand incredible radial loads.
Type 5 Bearing Designation
All JP3 bearings designations follow a common format:
The first two numbers refer to the bearing type and model, in this
case Type 5
The second numbers to the number of rows of
rollers and mounting style.
The last two numbers designate the stock diameter in centimeters. I.e. 40.XX.09 will be
5 bearings can be installed into either composite or metal hulls and in one of two housing styles, JP3 furniture.
We can also offer you to machine the cartridge,
ensuring an easy installation
see picture above.
Bearing Sizes and Load Ratings
Maximum Stock Diameter
* The `XX” designation refers to the housing style. Each size is available in the 3 housing sizes.
** Bearing loads vary with stock size. The figures given are for minimum and maximum stock sizes.