The table below shows all key dimensions of the 5BT000 series conical self-aligning bottom roller bearings.
The measurement T is the corresponding outside diameter for the rudder
tube when mounted over the outer housing.
Click on the pictures for a detailed view. |
|
PART NO.
|
RUDDER SHAFT
dia. |
BODY
dia. "D" |
TUBE
"T" |
HEIGHT "H1" / "H2"
|
WEIGHT |
WORKING
LOAD (max)
|
|
5BT030
|
30
mm |
79
mm
|
60
mm |
120
mm / 65 mm |
0,8
kg |
1000
kg
|
|
5BT035
|
35
mm |
79
mm
|
60
mm |
120
mm / 65 mm |
0,8
kg |
1100
kg
|
|
5BT040
|
40
mm |
79
mm
|
60
mm |
120
mm / 65 mm |
0,8
kg |
1200
kg
|
|
5BT044
|
44
mm |
79
mm
|
60
mm |
120
mm / 65 mm |
0,8
kg |
1300
kg
|
|
5BT050
|
50
mm |
99
mm
|
80
mm |
135
mm / 80 mm |
1
kg |
2450
kg
|
|
5BT060
|
60
mm |
129
mm
|
110
mm |
135
mm / 80 mm |
1,4
kg |
2800
kg
|
|
5BT070
|
70
mm |
129
mm
|
110
mm |
135
mm / 80 mm |
1,4
kg |
4300
kg
|
|
5BT080
|
80
mm |
129
mm
|
110
mm |
135
mm / 80 mm |
1,4
kg |
4700
kg
|
|
5BT090
|
90
mm |
159
mm
|
140
mm |
135
mm / 80 mm |
2
kg |
5300
kg
|
|
5BT100
|
100
mm |
159
mm
|
140
mm |
135
mm / 80 mm |
2
kg |
5600
kg
|
The applications for the 5BT000 series bearing: |
The 5BT000 series bearings are specially designed for
production yachts. This bearing type
combines a very simple installation with a very smooth operation under all
circumstances as the bearing will always be aligned to the rudder shaft.
The bearing consists of an aluminium outer housing with an inside sphere
turned out. A one piece delrin ball with rollers is located in the sphere. |
|
|
This bearing is not intended to be glassed into the hull.
The production yard will get an aluminium part with the outer shape off
the bearing, the so-called master, and put this on the mould of the hull.
After the production of the hull, the conical master will be pulled out
leaving a conical negative form. The top will have to be sawed off, and
the bearing can be installed. This can be done in a very late stage off
the production process, just before the rudder shaft has to be installed.
The outside surface of the bearing and the conical hole in the hull will
have to be cleaned thoroughly. The outside of the bearing will get a film
of sealant and pushed into the conical hole. The nut will be mounted and
tightened, so the bearing will be strongly fixed inside the hole. The
rudder shaft can be mounted with the appropriate sealing system. This
bearing has to be sealed with a neoprene gaiter directly on the top of the
bearing, or when the CWL is less than 100 mm below the top of the bearing,
an extra tube will have to be fitted. (see the picture below) |
|
