Designed to be fitted to boats up to 45 feet in length the Type 1 bearings feature a spherical Ertalyte® knuckle fitted within a precision machined aluminium housing.
This results in a bearing that is SIMPLE, LIGHT and STRONG.
The spherical knuckle allows the bearing to self-align while the rudderstock rotates within the bearing.
Bearings can be used with both METALLIC and COMPOSITE rudderstock.
Bearings are available in any size for 20mm to 110mm in 10mm increments.
Knuckles can be bored any size to suit the rudderstock OD.
Bearings are available in 3 HOUSING STYLES to suit all installation details : laminated, bolted, plugged, inserted to a rudder tube...
Aluminium bodies are anodised in our in-house anodisation plant to ensure quality and prevent corrosive action.
The bearing is NON- WATERTIGHT and is TO BE INSTALLED with either a FULL RUDDER TUBE between the upper and lower bearing or HALF RUDDER TUBE between the lower bearing + a seal carrier located partway up the rudder stock above the waterline.
See below installation sketches for further details.
Type 1 Bearings are BUREAU VERITAS & CE approved.
TYPE 1 DESIGNATION
JP3 bearing designations all follow a common format :
10.xx.xx
15.xx.xx
aluminium body + ertalyte® knuckle
aluminium body + STAINLESS STEEL needles within ertalyte® knuckle
The second numbers to the housing style
XX.10.XX : bearing inserted in rudder tube
XX.11.XX : bearing to be laminated
XX.13.XX : bearing to be bolted
XX.14.XX : bearing to be plugged
The last two to the maximum stock diameter in centimeters.
I.e. .XX.XX.09 will be bored between 81 to 90mm.
HOUSING STYLES
Type 1 bearings are available with 3 housing styles :
Type 10.11.xx
to be LAMINATED
The bearing is CYLINDRICAL and outer surface is machined with a groove to ensure a good bond with the bearing is laminated into the hull.
The bearing can be used as either an upper or lower bearing.
One end of the bearing is machined to match the rudder tube
Type 10.13.xx
to be BOLTED
The bearing is FLANGED for bolting to the deck.
Lower side of the bearing is machined to match the rudder tube.
Watertight seal or a cap can be supplied on request.
Type 10.14.xx
to be PLUGGED
Designed for production boatyards.
The outer surface is the bearing is TAPERED for installation in a matching tapered recess.
(See Type 10.14 Installation Guide for details)
The bearing can only be used a LOWER bearing.
Upper side of the bearing is machined to match the rudder tube.
Watertight seal or a cap can be supplied on request.
TYPE 1 BEARING SIZES AND LOADS RATINGS
Bearing |
Minimum Stock
Diameter |
Maximum Stock
Diameter |
Radial
SWL** |
10.XX.03 |
20 |
34 |
488-1100 |
10.XX.04 |
35 |
44 |
1100-1925 |
10.XX.05 |
45 |
50 |
1925-2766 |
10.XX.06 |
51 |
60 |
2766-3608 |
10.XX.07 |
61 |
70 |
3608-5051 |
10.XX.08 |
71 |
80 |
5051-6735 |
10.XX.09 |
81 |
90 |
6735-8660 |
10.XX.10 |
91 |
100 |
8660-10825 |
10.XX.11 |
101 |
110 |
10825-13230 |
* 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.
Want to know more?
See our FAQs or e mail to info@jp3steering.com
.