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

The Ronstan Series 40 Ball Bearing Orbit Block – Single – Becket – Swivel Head is a precision pulley system designed for applications that require smooth, low-friction load transfer and directional changes. Originally intended for marine rigging, this block is also ideal for automotive fabrication, winch installations, and engine compartment recovery systems where reliability is paramount.

This block features a single ball bearing orbit mechanism within a lightweight aluminum body, allowing the swivel head to rotate freely while maintaining structural integrity under load. The becket attachment point is compatible with standard rigging hardware, ensuring easy integration into existing systems. The swivel head design minimizes chafe and rolling resistance, reducing operational friction and wear on both the block and the load-bearing rope or strap.

With a total weight of 0.2 pounds and compact dimensions of 2 x 1 x 5 inches, this block is perfect for tight engine bays and custom chassis builds. Its robust design provides the controlled mechanical advantage and rotation needed for various applications, making it a valuable addition for anyone looking to enhance their rigging systems.