
Ronstan
Ronstan RF40101 – 40mm Ball Bearing Single Pulley with Loop Head
The Ronstan RF40101 40mm Single Pulley with Loop Head is a lightweight, high-performance block designed for sailors who need flexibility and strength in compact rigging systems. Its soft-attachment loop head reduces weight and offers versatile mounting options using rope, lashing, or webbing.
This block features a UV-resistant glass-fibre reinforced nylon housing and an acetal ball bearing sheave, delivering low-friction rope handling even under load. Ideal for dinghies, trailer yachts, catamarans, and other small keelboats, the RF40101 is perfect for control lines, mainsheets, and vangs.
Specifications:
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Product Code: RF40101
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Sheave Diameter: 40mm
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Rope Size: Up to 10mm
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Sheave Type: Acetal ball bearing
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Head Type: Loop top (soft lashing attachment)
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Cheek Material: UV-stabilised glass-fibre reinforced nylon
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Maximum Working Load (M.W.L.): 325kg
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Breaking Load (B.L.): 700kg
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Weight: Approx. 48g
Key Features:
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Ball bearing sheave for smooth, efficient operation
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Loop head allows soft and flexible attachment options
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Lightweight, corrosion-resistant, and UV-stable
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Suitable for mainsheets, control lines, and vangs
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Trusted Ronstan quality for reliable rigging performance
Equip your boat with the Ronstan RF40101 40mm Loop Head Pulley for responsive, efficient rope handling in all sailing conditions — now available at Barton Marine NZ.