Ronstan RF48000 Series 40 Orbit Ball Bearing Sheave

The Ronstan Series 40 Orbit Ball Bearing Sheave delivers high-performance, low-friction operation for sailing and rigging applications. This precision-engineered sheave features Ronstan's innovative 2-stage bearing system that combines ball bearings to minimize initial friction with a secondary full-contact bearing to maintain smooth, efficient operation across the entire working load range.

Key Features:

• Captive ball bearing design for reliable, low-friction performance
• 2-stage bearing system optimizes efficiency under varying loads
• 40mm (1-9/16") sheave diameter for versatile rigging applications
• Accommodates rope up to 10mm (3/8") diameter
• Compact 15.5mm (5/8") width profile
• Lightweight aluminum construction at just 30g (1.1oz)

Specifications:

• Sheave Diameter: 40mm / 1-9/16"
• Width: 15.5mm / 5/8"
• Maximum Rope Diameter: 10mm / 3/8"
• Maximum Working Load: 400kg / 880lbs
• Weight: 30g / 1.1oz
• Bearing Type: Captive ball bearing with full-contact secondary bearing

Ideal for control lines, halyards, and general rigging systems where smooth operation and durability are essential. Part of Ronstan's renowned Series 40 hardware line trusted by sailors worldwide.