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.

Jefa radial quadrants
Part No.	Description	Price in Euro
QU1527	radial quadrant R=150, maximum bore size = 75 mm.	€ 258
QU2027	radial quadrant R=200, maximum bore size = 100 mm.	€ 295
QU2527	radial quadrant R=250, maximum bore size = 100 mm.	€ 365
QU3027	radial quadrant R=300, maximum bore size = 125 mm.	€ 485
QU3527	radial quadrant R=350, maximum bore size = 125 mm.	€ 520
QU4027	radial quadrant R=400, maximum bore size = 150 mm.	€ 554
QU4527	radial quadrant R=450, maximum bore size = 150 mm.	€ 674
QUBORE	bore and key quadrant to customers dimensions	€ 68
QUSTOP	surcharge for additional rudder stop blocks	€ 109
QUAUTO	surcharge for additional autopilot arm connected to quadrant	€ 109