Jefa 270° Quadrants


Jefa radial 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.
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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