Master Plain Bearing blocks come in different sizes from 35mm to 90mm sheaves. They are also in comprehensive range of sizes and configurations.
Lock Up Shackle
A patented simple Lock-up system can be easily engaged to in either of two directions or free to swivel.
Stronger Strength Materials
The high strength composite sideplates are still glass reinforced Nylon composite with UV-Stabilizer. The excellent weather-ability protects blocks from breaking down for any sailing conditions.
Adjustable Cam Arms
Block with Cam Cleat quips adjustable Cam Arms to easily change the angle of line.
|Sheave Ø (mm)||60 mm||Maximum line Ø (in)||3/8 in|
|Sheave Ø (in)||2 1/3 in||Maximum working load (kg)||748 kg|
|Maximum line Ø (mm)||10 mm||Maximum working load (lb)|
60 mm Plain Bearing blocks are typically used for high loads for Halyard tuning, Mainsheet systems, Mast foot blocks, Mast head blocks and boom vangs.
An exclusive Face to Face locker system can be easily engaged to position shacke in either of two directions or just free to swivel. A locker system also can take more loads then traditional ways without damaging the block and hassle.
Patent pending in Australia, US, UK, France, Netherlands, China, Germany, and Taiwan.
•Do not use Master products to human suspension!