product specifications

Item: 75mm Aluminum Narrow Mast Block / 8mm Clevis - Master ALC-7511F

Sheave diametre

75 mm

Sheave diametre

3 in

Maximum line diametre

12 mm

Maximum line diametre

1/2 in

MWL / BL

1150 / 2300 kg

MWL / BL

2535 / 5071 lb


product range - ALC blocks

Master ALC blocks are available in 57mm and 75mm sizes and several configurations. They are designed for larger cruisers or racers providing efficiency and durability in high-load applications. The range features:

  • a Delrin sheave with self-lubricating bushing rotating on a 316L SS shaft for limited friction and high static loads,
  • Delrin ball bearings to manage side-loads and for efficiency,
  • side plates in either; hard-coat anodized 6061-T6 aluminium or hand-polished 316L stainless steel which will not distort under high-loads.
  • where applicable blocks are topped with a highly polished 316L SS shackle and feature Master’s patented locking mechanism.