Jefa Quadrants

The Jefa radial 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 twin track arrangement offers flexibility while installing and adds the possibility crossing the cable between the steering position and quadrant in stead of crossing the cables inside the pedestal.
Two stop surfaces have been integrated in the aft side of the quadrants. 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.

The best way to add an autopilot connection to the quadrant is an additional autopilot arm welded to the boss.
Please note the above picture shows the 80° quadrant and not the 270° version.

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

Jefa radial quadrants
Part No.	Description	Price in Euro
QU1527	radial quadrant R=150, maximum bore size = 75 mm.	€ 271
QU2027	radial quadrant R=200, maximum bore size = 100 mm.	€ 310
QU2527	radial quadrant R=250, maximum bore size = 100 mm.	€ 383
QU3027	radial quadrant R=300, maximum bore size = 125 mm.	€ 509
QU3527	radial quadrant R=350, maximum bore size = 125 mm.	€ 546
QU4027	radial quadrant R=400, maximum bore size = 150 mm.	€ 582
QU4527	radial quadrant R=450, maximum bore size = 150 mm.	€ 708
QUBORE	bore and key quadrant to customers dimensions	€ 72
QUSTOP	surcharge for additional rudder stop blocks	€ 115
QUAUTO	surcharge for additional autopilot arm connected to quadrant	€ 115