Ronstan Series 55 RT Orbit Block, Single Swivel Head

The Ronstan Series 55 RT Orbit Block, Single Swivel Head #RF56100 is your go-to for versatile sailing needs. It offers automatic and manual ratchet engagement, making it perfect for quick maneuvers. With impressive holding power, it's a reliable choice for anyone who loves the water.

This single block is crafted with an anodised aluminium sheave and toughened glass fibre reinforced nylon cheeks, ensuring durability and performance. The ball bearings are made from high compression strength carbon black Acetal, and it features a UV-stabilized Dyneema® rope link. Ideal for mainsheet systems and spinnaker sheets on dinghies and small keelboats up to 8m (26ft).

Usage

Perfect for mainsheet systems, spinnaker sheets, halyard, vang, and backstay applications on boats up to 8m (26ft).

Our Part #RONRF56100 | Mfr. Part #RF56100

• Automatic and manual ratchet engagement modes for flexible control.
• Superior holding power with a 21:1 holding ratio.
• Durable materials including anodised aluminium and reinforced nylon.
• Up to 20:1 holding power
• Smooth easing of sheets
• High performance cleating
• Swivel shackle head for unlimited block rotation.
• Stainless steel shackle head and compatibility with sharp fixing points.
• Automatic & manual ratchet block

Sheave Diameter: 55 mm / 2 5/32 in
Max. Rope Diameter: 10 mm / 3/8 in
Pin Diameter: 5 mm / 3/16 in
Max. Working Load: 250 kg / 550 lb
Breaking Load: 650 kg / 1430 lb
Weight: 82 g / 2.9 oz