80° Quadrants

The Jefa 80° quadrants are not made from cast-aluminium like most other quadrants in the market place. As most quadrants will also function as rudder stop, one could have enormously high impact loadings. Cast-aluminium is very brittle and could easily break under these circumstances. All Jefa quadrants are fabricated from high strength Aluminium 6082 (AlMgSi1 or Duralumin). This material is enormously strong, whilst retaining high ductility (Jefa Marine produces rudder shafts from this material). This results in an extremely strong quadrant arrangement. The quadrants always have twin high precision CNC milled tracks with deep groove depths and large guide bend radii ensuring a reliable and long lifetime of the cable.
The opening in the quadrant is meant to be used as rudder stop. When another stop arrangement is required, we can weld one or two stop blocks on a position of your choice. An optional autopilot arm can be welded underneath the quadrant or pointing aft at the quadrant boss. Please click on the picture for a larger view.

DATA TABLE

Jefa radial quadrants

Part No. Description Price in Euro
QU1580 80° quadrant R=150, incl. bore, max. bore = 75 mm. 303
QU2080 80° quadrant R=200, incl. bore, max. bore = 75 mm. 337
QU2580 80° quadrant R=250, incl. bore, max. bore = 100 mm. 397
QU3080 80° quadrant R=300, incl. bore, max. bore = 100 mm. 500
QU3580 80° quadrant R=350, incl. bore, max. bore = 100 mm. 571
QU4080 80° quadrant R=400, incl. bore, max. bore = 125 mm. 639
QU4580 80° quadrant R=450, incl. bore, max. bore = 125 mm. 806
QU5080 80° quadrant R=500, incl. bore, max. bore = 125 mm. 949
QUSTOP surcharge for additional rudder stop blocks 126
QUAUTO surcharge for additional autopilot arm connected to quadrant 126

Quadrant specification form

Autopilot connection:

The best way to add an autopilot connection to the quadrant is an additional autopilot arm welded to the boss

Special shaft connections:

Quadrants for carbon rudder stocks need a profile in stead of a round hole. We can adjust each quadrant to suit your needs.

Quadrants for carbon rudder stocks need a profile in stead of a round hole. We can adjust each quadrant to suit your needs.