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Stay Away!, Solaris 55, 16.70 m (54.79'), 
Javier Soto Acebal design © Solaris Yachts
Stay Away!, Solaris 55, 16.70 m (54.79'), 
Javier Soto Acebal design © Solaris Yachts
Harken offers a full range of hydraulic cylinders to handle mast, 
sail, and keel controls on cruising and racing yachts. 
Components are designed to reduce weight and size and to 
increase structural strength for years of high-stress use in corro-
sive marine environments. They are available in sizes -6 (25mm 
bore) to -195 (145mm bore) to fit everything from 9 m (30') 
racer/cruisers to 46 m (150')-plus megayachts. Harken-certified 
service centers can be found in countries around the world.
DO NOT use Harken equipment for human suspension unless product is specifically certified and labeled for such use.
XM-19 stainless steel: 
Rod; pins
HYDRAULIC CYLINDERS
Seal
O-ring
Standard
6061-T6 aluminum: 
Hard Lube-anodized*cylinder tube
Materials: For properties see pages 249-250
* For an additional fee, clear-anodized aluminum 
is available. Clear anodization provides less 
protection than Hard Lube anodizing.
 Stainless Steel and titanium are also available.
 Cylinder end fi ttings are stainless steel only
Stands up to sun, salt, and time
•  Cylinders come standard with Hard Lube-anodized 
aluminum or titanium for GP cylinders. Other 
options available upon request.
• High-strength XM-19 stainless steel rods and pins. 
•  Durable, low-friction polyurethane seals and 
bronze-filled PTFE piston seals. 
•  O-rings in nonabsorbent polyurethane seals for 
consistent fit. 
Variety of cylinder types
•  Single-acting; double-pull; locking; boom vangs. 
Single-acting cylinders have air-spring returns, but 
can be ordered in push, push/pull, and pull/ pull 
custom versions. 
•  A variety of standard strokes are available. 
Custom lengths available upon request 
Selection of rod end fittings
• Standard cylinders come with clevis jaw for ends. 
•  Blocks and different eye types available; see 
alternate end fittings.
 •  Smooth anti-snag clevis pins protect rigging 
and crew.
• 

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