57mm Single Swivel Shackle Block
item NO.：ALC-5701F-
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 Single Swivel Shackle Block
ALC-5701F
USD$
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) 57 mm Sheave Ø (in) 2 1/3 in Maximum line Ø (mm) 16 mm Maximum line Ø (in) 5/8 in Weight (g) 263 g Weight (oz) 9.28 oz Maximum working load (kg) 1100 kg Maximum working load (lb) 2425 lb Maximum breaking load (kg) 2000 kg Maximum breaking load (lb) 4409 lb -
