
Ronstan
Ronstan RF48151 Orbit 40mm Cheek Block – Lightweight Low-Friction Pulley
The Ronstan RF48151 Orbit 40mm Cheek Block is a compact, high-strength fixed-mount pulley designed for use on spars, booms, and other curved or flat mounting surfaces. Part of the elite Ronstan Orbit Series, this block features glass fibre-reinforced polymer cheeks, acetal ball bearings, and a high-strength 40mm sheave, ensuring smooth, low-friction performance under load.
Ideal for control lines, halyards, and deflection points, the RF48151 is engineered for durability, corrosion resistance, and minimal weight. Its fixed cheek design allows secure attachment in tight or hard-to-reach spaces—perfect for performance dinghies, sportsboats, and small keelboats.
Specifications:
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Sheave Diameter: 40mm
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Max Rope Diameter: 9mm
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Bearings: Acetal ball bearings for low-friction handling
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Materials: Fibre-reinforced polymer cheeks, acetal sheave
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Mounting: Fixed cheek block for deck, boom, or mast mounting
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Applications: Halyard leads, control lines, vang systems, fairleads
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Features: Lightweight, corrosion-resistant, race-proven Orbit design
Available now from Barton Marine NZ, your trusted supplier of Ronstan Orbit rigging hardware and sailing blocks.
- M.W.L. 400 kg
- B. L. 800 kg
- Weight 33 g