Ronstan Series 40 Orbit BB Sheave, 40mm, 400kg MWL – Ultra-Light, Low Friction

Maximize your vessel's performance with the Ronstan Series 40 Orbit BB Sheave. Engineered for competitive sailing and demanding marine applications, this sheave features Ronstan's advanced 2-stage ball bearing system to deliver minimal friction across the full working load range. Its ultra-lightweight design, achieved through innovative polymer and fibre technology, ensures superior strength-to-weight ratio for unparalleled efficiency. Upgrade your rigging with Ronstan's no-compromise solution today.

• Optimized Sheave Diameter: A 40mm (1-9/16 inch) sheave diameter provides precise line control and seamless operation.
• Broad Rope Compatibility: Accommodates ropes up to 10mm (3/8 inch), offering versatility for various rigging setups.
• High Working Load: Supports a maximum working load of 400kg (880lbs), ensuring reliability under demanding conditions.
• Ultra-Lightweight Construction: Weighing only 30g (1.1oz), this sheave significantly reduces overall rigging mass without compromising strength.
• Advanced Bearing System: Features a 2-stage ball bearing system with high-compression strength acetal ball bearings for sustained low friction at both low and high loads.
• Compact Dimensions: A width of 15.5mm (5/8 inch) allows for a low-profile installation.

Recommended Applications: Ideal for mainsheet and spinnaker systems on dinghies, catamarans, and sports yachts up to 5m (16ft), as well as halyard, vang, and backstay applications on boats up to 8m (26ft), and control lines on larger yachts.