Ronstan Series 40 Ball Bearing Orbit Block - Single - Becket - Cleat - Swivel Head

The Series 40 Ball Bearing Orbit Block is meticulously crafted for marine and boating enthusiasts, delivering unparalleled performance and reliability. Whether you're sailing a dinghy or managing lines on a larger yacht, this orbit block ensures smooth operation and maximum efficiency in your rigging systems.

Features

• Ultra Lightweight
• Low Friction 2-Stage Orbital Ball Bearing System
• Highest Working Load in Its Class
• Low Profile and Compact Design
• High-Performance Cleating

Lightweight Design

Kilogram for kilogram, the Series 40 Ball Bearing Orbit Block stands as the world's lightest in its category. Its unique orbital design ensures that the bearing operates only within the active areas of the floating sheave, significantly reducing the mass of the inactive return race and hub. This innovative approach minimizes both weight and bulk across all block configurations.

The single and becket block features a through-sheave becket arrangement, achieving the lowest possible weight. Multi-sheave blocks are enhanced with single intermediate cheeks and an ultra-light, efficient head arrangement, resulting in a 30% weight saving compared to the nearest competitor. Unlike other brands that use unnecessary double cheeks and heavy steel channels, our design maintains strength without the added bulk.

Superior Load Capacity

Equipped with an orbital ball-bearing arrangement, the Series 40 Orbit Block boasts the largest possible bearing race diameter in its class, optimizing load performance. The Ronstan 2-stage bearing system incorporates high compression grade acetal ball bearings and a secondary full-contact bearing, ensuring minimal friction across the entire working load range.

The floating sheave and bearing system are supported by a fiber-reinforced load frame, meticulously computer-modeled for stress optimization. This results in unparalleled durability and consistent performance under demanding conditions.

Versatile Applications

• Mainsheet systems on spinnaker sheets for dinghies up to 5m (16ft)
• Spinnaker sheets on dinghies, sportsboats, and small keelboats up to 5m (16ft)
• Halyard, vang, and backstay applications on boats up to 8m (26ft)
• Control line applications on larger yachts

Premium Materials

Component	Material
Ball Bearings	High Compression Strength Carbon Black Acetal
Stage 2 Bearing	Glass Fibre Reinforced, MoS2 Impregnated Nylon
Frame/Cheeks	Toughened, Glass Fibre Reinforced Nylon
Sheave	Carbon Fiber Reinforced, PTFE Impregnated Nylon

Orders of physical products placed by 3 PM EST M-F typically ships the same day, if all requested items are in stock. Weekend orders will typically ship on Monday.

Shipping takes 2-7 days.

We currently ship to the Contiguous 48 States.

Life of Sailing merch is custom made for the customer after an order is placed. Total turnaround is typically 7-14 days from order to doorstep.