JEFA AUTOPILOT DRIVES Complete Autopilot Drives & Steering Systems
LINEAR DRIVE The Jefa Linear Drive is a strong and compact autopilot drive, that is much more efficient than existing hydraulic and electromechanical linear drive units. With a thrust of 882 lbs. on 9.84” center it’s much stronger than a human being (the maximum output torque of 723 ft/ lb is equivalent to 220 lbs. force on the rim of a 40” steering tiller) and is built for 24 hours per day continuous operation with a total weight of only 14.5lbs. The Jefa electro-mechanical drives are strong, compact, and much more efficient than any other electro-mechanical autopilot drive unit on the market. Suitable for sailing vessels from 20’ up to 70’ in length, Jefa drive units use a flat wound electric motor that is not a standard industrial motor, but specifically designed and produced for this application. This provides multiple advantages over standard industrial motors. Jefa has also developed a unique and patented engagement clutch. The solution is based on two electrically operated spring loaded clutch pins that engage and disengage when the autopilot is powered and switched off. This allows for less friction when under manual
control of the helm, a very long clutch life as it will not wear over time like traditional friction plates, and a very low current draw. Due to their use of the flat wound motor and pin clutch system, the drive units are one of the most strong and compact autopilot drive units available. Jefa’s mechanical autopilot drive units are compatible with all major autopilot brands, like Raymarine, Simrad, Garmin, NKE, Furuno and B&G. Jefa Marine has been making reliable electro-mechanical autopilot drives for over ten years. Please to contact us if you have any questions about the available drive units.
Autopilot Drive units are specified based on your vessel’s steering loads. Please contact PYI for assistance.
PART NUMBERS
DU-LD-100 Linear Drive
PART #
DESCRIPTION
DU-LD-100
Linear Drive 100kgm - 400kg, thrust, 12v
DIRECT DRIVES DIRECT DRIVE TYPE 1
The Jefa Direct Drive Type I is an extremely compact autopilot drive. The maximum output torque is 1082 ft/lbs. with a total weight of only 26.5 lbs. The combination of the flat wound (pancake) electric motor with the ultra efficient planetary and spur gearbox results in an extremely efficient drive unit. The drive can be used on boats up to 45’ LOA. with a mechanical steering system that can be back driven. The direct drive drives the rudder via a draglink and the existing tiller arm or quadrant, or via an independent tiller arm. DIRECT DRIVE TYPE 2 The Jefa Direct Drive Type 2 is a very compact autopilot drive unit for larger boats. The maximum output is 2706 ft/lbs. Total weight of only 42 lbs. This drive can be used on boats from 45 to 55 foot, equipped with a mechanical steering system that can be back driven. The direct drive drives the rudder via a draglink and the existing tiller arm or quadrant, or via an independent tiller arm.
DUD-D112 Direct Drive Type 1
DUD-D212 Direct Drive Type 2
PART NUMBERS
PART #
DESCRIPTION
DU-DD1-FB DUD-D212 DUD-D224 DUD-D312 DUD-D324 DUD-D424 DUD-D112
Rudder feedback mounting bracket for DD1
Direct Drive 375kgm Type 2 12v Direct Drive 375kgm Type 2 24v Direct Drive 525kgm Type 3 12v Direct Drive 525kgm Type 3 24v Direct Drive 735kgm Type 4 24v Direct Drive 150kgm Type I 12v
TO ORDER VISIT WWW.PYIINC.COM OR CALL 425-355-3669
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