A254 Hydraulic Traveler Cylinders

Navtec double rod cylinders were engineered and designed by Navtec for use in dual pull application, usually with a block and tackle incorporated. Navtec originally engineered these cylinders as a solution to operate main sheet travellers. They are also commonly used to operate genoa lead systems as well as many custom applications. Navtec will work with any marine hardware manufacturer to provide a cylinder that interfaces with their hardware to operate any double acting needs.

Part NumberCylinder SizeCap ThreadZero Stroke LengthWeight STD Aluminum
A254-006-J_ _ _*-61 1/18-16 unf 2a11.9 in (301 mm)1.2 + .1 lbs/in of stroke (.55 + .02 kg +kg/cm stroke)
A254-010-J_ _ _*-101 7/16-16 unf 2a13.4 in (341 mm)2.2 + .1 lbs +lbs/in stroke (.97 + .02 kg +kg/cm stroke)
A254-012-J_ _ _*-121 5/8-16 unf 2a14.8 in (377 mm)3.5 + .2 lbs +lbs/in stroke (1.58 + .04 kg +kg/cm stroke)
A254-017-J_ _ _*-171 7/8-16 unf 2a 15.1 in (384 mm)4.3 + .2 lbs +lbs/in stroke (1.93 + .04 kg +kg/cm stroke)
A254-022-J_ _ _*-222 1/8-16 unf 2a 18.1 in (461 mm)6.7 + .3 lbs +lbs/in stroke (3.02 + .05 kg +kg/cm stroke)
A254-030-J_ _ _*-302 5/8-16 unf 2a 18.9 in (481 mm)11.1 + .5 lbs +lbs/in stroke (5.02 + .09 kg +kg/cm stroke)
A254-040-J_ _ _*-403 1/4-16 unf 2a 20.6 in (522 mm)18.2 + .8 lbs +lbs/in stroke (8.22 + .13 kg +kg/cm stroke)
A254-048-J_ _ _*-483 1/4-16 unf 2a 20.6 in (522 mm)18.1 + .8 lbs +lbs/in stroke (8.22 + .13 kg +kg/cm stroke)
A254-060-J_ _ _*-603 3/4-16 unf 2a 22.9 in (582 mm)27.3 + 1.0 lbs +lbs/in stroke (12.37 + .17 kg +kg/cm stroke)
A254-076-J_ _ _*-763 3/4-16 unf 2a 22.9 in (582 mm)27.2 + 1.0 lbs +lbs/in stroke (12.36 + .17 kg +kg/cm stroke)
A254-090-J_ _ _*-904 3/8-8 unf 2a 32.7 in (830 mm)44.3 + 1.5 lbs +lbs/in stroke (20.10 + .27 kg +kg/cm stroke)
A254-110-J_ _ _*-1104 7/8-8 unf 2a 33.2 in (843 mm)64.8 + 1.7 lbs +lbs/in stroke (29.39 + .30 kg +kg/cm stroke)
A254-150-J_ _ _*-1505 3/8-8 unf 2a 35.2 in (895 mm)89.6 + 2.6 lbs +lbs/in stroke (40.65 + .47 kg +kg/cm stroke)
A254-260-J_ _ _*-2607-8 unf 2a

Max relief setting is 5,000 psi. See HP cylinder information for all other technical data. Cylinders are designed on an individual basis. *Specify desired stroke length when ordering.
Overall cylinder length equals zero stroke length plus two times the desired stroke.

Lewmar blocks are the ideal choice for the control lines leading from your A254 Cylinder to the traveler car. The chart below lists the adapters that allow you to connect Lewmar blocks directly to the Navtec cylinder rods on your A254 Cylinder. Please contact Navtec or Lewmar for help picking the exact blocks needed to drive your traveler car.

Lewmar Adaptor
Part Number
Ram SizeRod THD Block SizeLewmar Block Part NumberMax System Pressure
29914080-67/16 RH60 mm299426015000 psi / 350 Bar
29914081-101/2 RH80 mm29942801/299028085000 psi / 350 Bar
29914082-125/8 RH105 mm299021085000 psi / 350 Bar
29914083-175/8 RH130 mm299021385000 psi / 350 Bar
29914084-223/4 RH130 mm299021385000 psi / 350 Bar
29914085-307/8 RH130 mm299121015000 psi / 350 Bar
29914086-101/2 RH60 mm299426013000 psi / 250 Bar
29914087-125/8 RH80 mm29942801/299028083000 psi / 250 Bar
29914088-175/8 RH105 mm299021083000 psi / 250 Bar
29914089-223/4 RH130 mm299021383000 psi / 250 Bar
29914090-307/8 RH130 mm299021383000 psi / 250 Bar
Lwemar Adaptor
Part Number
Ram SizeRod THDBlock SizeLewmar Block Part NumberMax System Pressure
29914091-67/16 LH60 mm299426015000 psi / 350 Bar
29914092-101/2 LH80 mm29942801/299028085000 psi / 350 Bar
29914093-125/8 LH105 mm299021085000 psi / 350 Bar
29914094-175/8 LH130 mm299021085000 psi / 350 Bar
29914095-223/4 LH130 mm299021385000 psi / 350 Bar
29914096-307/8 LH130 mm299121015000 psi / 350 Bar
29914097-101/2 LH60 mm299426013000 psi / 250 Bar
29914098-125/8 LH80 mm29942801/299028083000 psi / 250 Bar
29914199-175/8 LH105 mm299021083000 psi / 250 Bar
29914100-223/4 LH130 mm299021383000 psi / 250 Bar
29914101-307/8 LH130 mm299021383000 psi / 250 Bar