Ronstan, Series 40 Ball Bearing Orbit Block™, Fiddle with Dyneema® Link Head, RF45501

Description

The Ronstan Series 40 Ball Bearing Orbit Block™ is designed for lightweight performance. Its unique orbital design ensures that the bearing is only present in the active areas of the floating sheave, minimizing mass and bulk. The block features a ball bearing single and becket block with a through-sheave becket arrangement, making it the lightest in its class. Multi-sheave blocks are equipped with single intermediate cheeks and an ultra-light head, offering a 30% weight saving over competitors. The orbital ball-bearing system maximizes load performance with a large bearing race diameter and a 2-stage bearing system, featuring high compression acetal ball bearings and a secondary full-contact bearing. The floating sheave and bearing system are supported by a fiber-reinforced load frame, optimized for stress. The fiddle block uses a Dyneema® Link attachment, suitable for both spliced and un-spliced lines, and can be converted to a becket version by adding a Dyneema® link. Ideal for spinnaker sheets on dinghies, sportsboats, and small keelboats up to 5m (16ft).

Specifications

• B.L. (kg): 700
• M.W.L. (kg): 325
• Max. Rope diameter (mm): 9
• Sheave diameter (mm): 40mm
• Type of Block: Fiddle
• Weight (g): 47

Notes: Small fiddle block sheave has a high load full contact bearing (i.e. not ball bearing). Main sheave has 2-stage, ball bearing. Replacement Dyneema® Link Available as RF9003-07