A254 Hydraulic Traveller 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 Number	Size	Body Dia.	Rod Dia./Thread	Cap Thread	Zero Stroke	Weight STD Aluminum
A254-006-J_ _ _*	-6	1.32″ (33.5mm)	7/16″ (11.1mm)	1 1/18-16 unf 2a	11.9″ (301mm)	1.2 + .1 lbs/in of stroke (.55 + .02 kg +kg/cm stroke)
A254-010-J_ _ _*	-10	1.66″ (42.2mm)	1/2″ (12.7mm)	1 7/16-16 unf 2a	13.4″ (341mm)	2.2 + .1 lbs +lbs/in stroke (.97 + .02 kg +kg/cm stroke)
A254-012-J_ _ _*	-12	2.00″ (50.8mm)	5/8″ (15.9mm)	1 5/8-16 unf 2a	14.8″ (377mm)	3.5 + .2 lbs +lbs/in stroke (1.58 + .04 kg +kg/cm stroke)
A254-017-J_ _ _*	-17	2.25″ (57.2mm)	5/8″ (15.9mm)	1 7/8-16 unf 2a	15.1″ (384mm)	4.3 + .2 lbs +lbs/in stroke (1.93 + .04 kg +kg/cm stroke)
A254-022-J_ _ _*	-22	2.50″ (63.5mm)	3/4″ (19.1mm)	2 1/8-16 unf 2a	18.1″ (461mm)	6.7 + .3 lbs +lbs/in stroke (3.02 + .05 kg +kg/cm stroke)
A254-030-J_ _ _*	-30	3.25″ (82.6mm)	7/8″ (22.2mm)	2 5/8-16 unf 2a	18.9″ (481mm)	11.1 + .5 lbs +lbs/in stroke (5.02 + .09 kg +kg/cm stroke)
A254-040-J_ _ _*	-40	4.00″ (101.6mm)	1″ (25.4mm)	3 1/4-16 unf 2a	20.6″ (522mm)	18.2 + .8 lbs +lbs/in stroke (8.22 + .13 kg +kg/cm stroke)
A254-048-J_ _ _*	-48	4.00″ (101.6mm)	1″ (25.4mm)	3 1/4-16 unf 2a	20.6″ (522mm)	18.1 + .8 lbs +lbs/in stroke (8.22 + .13 kg +kg/cm stroke)
A254-060-J_ _ _*	-60	4.50″ (114.3mm)	1 1/4″ (31.8mm)	3 3/4-16 unf 2a	22.9″ (582mm)	27.3 + 1.0 lbs +lbs/in stroke (12.37 + .17 kg +kg/cm stroke)
A254-076-J_ _ _*	-76	4.50″ (114.3mm)	1 1/4″ (31.8mm)	3 3/4-16 unf 2a	22.9″ (582mm)	27.2 + 1.0 lbs +lbs/in stroke (12.36 + .17 kg +kg/cm stroke)
A254-090-J_ _ _*	-90	5.50″ (139.7mm)	1 1/4″ (31.8mm)	4 3/8-8 unf 2a	32.7″ (830mm)	44.3 + 1.5 lbs +lbs/in stroke (20.10 + .27 kg +kg/cm stroke)
A254-110-J_ _ _*	-110	6.00″ (152.4mm)	1 3/8″ (34.9mm)	4 7/8-8 unf 2a	33.2″ (843mm)	64.8 + 1.7 lbs +lbs/in stroke (29.39 + .30 kg +kg/cm stroke)
A254-150-J_ _ _*	-150	7.00″ (177.8mm)	1 1/2″ (38.1mm)	5 3/8-8 unf 2a	35.2″ (895mm)	89.6 + 2.6 lbs +lbs/in stroke (40.65 + .47 kg +kg/cm stroke)
A254-260-J_ _ _*	-260			7-8 unf 2a

Max relief setting is 5,000 psi. See A250 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 one choice for the control lines leading from your A254 Cylinder to the traveller 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.