Ronstan Series 100 Single Roller Bearing Block with Upright Lead - RF108171

The Series 100 Roller Bearing Block features a single upright lead design with a durable alloy sheave and housing. It is engineered for high load capacity and smooth line handling, suitable for demanding rigging applications.

Features:

• High static and dynamic load capacity for reliable performance under heavy use
• Upright lead design keeps lines close to the deck for efficient operation
• Cheek cut-outs allow easy access for bearing cleaning and maintenance
• Self-contained sheave with low-friction alloy construction for durability
• Torlon needle rollers support high axial loads with minimal wear
• Acetal ball bearings handle side thrust loads smoothly and quietly
• Designed for easy disassembly and servicing to extend product life

Specifications:

• Sheave Diameter: 100 mm (4")
• Breaking Load: 4,400 kg (9700 lbs)
• Maximum Working Load: 2,200 kg (4850 lbs)
• Max Rope Diameter: 14 mm (9/16")
• Weight: 517 g (18.2 oz)
• Fastener Diameters: 10 & 8 mm (3/8" & 5/16")

Compatibility:

• Suitable for halyards at mast bases and similar rigging setups