Ronstan Series 55 RT Orbit Block, Cheek Anti-Clockwise Rotatio

The Ronstan Series 55 RT Orbit Block, Cheek Anti-Clockwise Rotation #RF56151A is a versatile block perfect for sailors who value both convenience and performance. With its unique automatic ratchet and manual engagement modes, this block offers unmatched holding power and adaptability for various sailing conditions. It's designed for those who appreciate effortless ease and reliability on the water.

Features & Benefits

• Automatic and manual ratchet engagement modes
• Superior holding power with a 21:1 ratio
• 12 gripping faces for enhanced line resistance

Crafted with precision, the block features an anodised aluminium sheave and high compression strength carbon black Acetal ball bearings for durability. The frame and cheeks are made from toughened glass fibre reinforced nylon, while the rope link uses UV-stabilised, multi-strand impregnated SK75 Dyneema®. Its innovative design reduces rope wear and enhances performance, making it an excellent choice for competitive and recreational sailing.

Usage

Ideal for use in mainsheet systems and for gybing asymmetric spinnakers, providing smooth and controlled sheet movement in various sailing scenarios.

Features:

• Up to 20:1 holding power.
• Smooth easing of sheets.
• High performance cleatin.g
• Automatic and manual ratchet block.

Sheave Diameter: 55 mm / 2 5/32 in
Max. Rope Diameter: 10 mm / 3/8 in
Max. Working Load: 250 kg / 550 lb
Breaking Load: 700 kg / 1540 lb
Weight: 76 g / 2.7 oz