Ronstan Series 40 Orbit BB Sheave

The Ronstan Series 40 Orbit™ Ball Bearing Sheave is engineered for high efficiency and smooth operation in sailing and marine control systems. Featuring Ronstan’s two-stage bearing system, this sheave combines ball bearings to minimize friction with a secondary full-contact bearing that maintains low friction across the entire working load range.

Designed for reliability and performance, the captive ball bearing system ensures consistent operation under both light and heavy loads, making it ideal for high-performance sailing applications.

Key Features

• Two-stage bearing system for optimal efficiency

• Ball bearings reduce friction at low loads

• Full-contact secondary bearing maintains performance under high loads

• Captive ball bearing design for durability and reliability

• Lightweight and compact construction

• Ideal for sail control and deck hardware systems