57mm Forkhead Block
item NO.：ALC-5727F-
Aluminum Blocks
Hercules blocks are specialized made for cruising boats to handle extremely high loads. They are made by one piece machine made sideplate for perfect balance between weight and strength. Sleeve and side ball bearing provide smooth rotation for extreme high loads. All materials are UV-resistant adn anti-corrosion for maximum protection and long lasting durability.
Hercules single and fiddle blocks are ideal for vang and mainsheet systems. Foot models with jammers can be used on the deck to guide lines and secure sheets.
57mm Forkhead Block
ALC-5727F
$
MATERIALS- Sheave: Self-lubricant acetal composite
- Ball Bearing: 316 stainless steel sleeve bearing and two races Derlin® ball bearing
- Sideplates/frames: Black hardcoat anodized Aluminum
- Shackle: Forged Grade 316 stainless steel / tool-free lever lock mechanism
APPLICATIONS- Mainsheet system
- Mast foot blocks and Mast head blocks
- Halyard tuning and vang
- Control lines on boats of all sizes
Do not use Master products for human suspension! -
SPECS
Sheave Ø (mm) 57mm Sheave Ø (in.) 2 1/3 in. Maximum line Ø (mm) 16mm Maximum line Ø (in.) 5/8 in. Weight (g) 178g Weight (oz.) 6.28oz. Maximum working load (kg.) 1100kg. Maximum working load (lb.) 2425lb. Maximum breaking load (kg.) 2000kg. Maximum breaking load (lb.) 4409lb. -
