Ronstan Series 40 Orbit Block with Ball Bearing and Swivel Head

The Ronstan Series 40 Orbit Block with Ball Bearing and Swivel Head is a versatile and durable solution for various sailing applications. Designed with a tuned 2-stage bearing system, this block offers excellent performance across a wide range of working loads. It features an integrated thrust bearing for enhanced resilience to handle high dynamic or static loads. The block is constructed with an acetal sheave, alloy cheeks, and stainless steel fixings, ensuring reliability and a long service life.

One of the standout features of the Ronstan Series 40 Orbit Block is its lightweight design. Kilogram for kilogram of working load, these blocks are the world's lightest. The unique orbital design optimizes the bearing placement, minimizing the mass of the inactive return race and hub. This lightweight construction is further enhanced in different block configurations. The ball bearing single and becket block, for example, has a through-sheave becket arrangement, resulting in the lowest weight possible.

The Ronstan Series 40 Orbit Block also boasts the highest working load in its class. Its orbital ball-bearing arrangement allows for the largest possible bearing race diameter, maximizing load performance. The block's 2-stage bearing system consists of high compression grade acetal ball bearings and a secondary full-contact bearing, minimizing friction across the full working load range. The floating sheave and bearing system are supported by a fiber-reinforced load frame, which has been stress optimized through computer modeling.

Features:

• Ultra Lightweight
• Low friction 2-stage Orbital ball bearing system
• Highest working load in its class
• Low profile and compact
• High performance cleating
• Swivel shackle head for unlimited block rotation
• Stainless steel shackle head for ultimate durability and compatibility with harsh fixing points
• Ultra low profile integrated becket

Applications:

• Spinnaker sheets on dinghies, sportsboats, and small keel boats up to 5M (16')
• Halyard, vang, and backstay applications on boats up to 8M (26')
• Control line applications on larger yachts

Materials:

• Ball Bearings - High compression strength carbon black Acetal
• Stage 2 Bearing - Glass fiber reinforced, MoS2 impregnated Nylon
• Frame/Cheeks - Toughened, glass fiber reinforced Nylon
• Sheave - Carbon fiber reinforced, PTFE impregnated Nylon
• Head fitting: Grade 316 stainless steel

Specifications:

• Sheave Ø: 40mm (1-9/16")
• M.W.L.: 325kg (715lbs)
• B.L.: 650kg (1,430lbs)
• Weight: 44g (1.6oz)

Learn More

• Ball Bearing
• Sheave
• Stainless Steel

Product: Ronstan Series 40 Orbit Block with Ball Bearing and Swivel Head

Brand: Ronstan

Model: RF45110

Shipping Weight: 0.10 lb

Shipping Height: 1.00 in

Shipping Width: 2.00 in

Shipping Length: 5.00 in

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