Ronstan RF15141 15mm Ball Bearing Stand-Up Pulley Block

The Ronstan RF15141 15mm Stand-Up Pulley Block is a compact, ultra-lightweight block designed for precision control on performance dinghies and small boats. With a 15mm UV-stabilised acetal sheave and stainless steel ball bearings, it offers exceptionally smooth rotation under load with minimal friction.

This stand-up configuration includes a low-profile base and integrated spring to keep the block upright and aligned for clean, efficient rope runs. Ideal for control lines, outhauls, cunninghams, and other low-load applications where space and weight savings are essential.

Built for reliability and performance, the RF15141 delivers high-end handling in a miniature form factor.

✅ Key Features

• Sheave Diameter: 15mm

• Max Rope Diameter: 4mm

• Breaking Load: 300kg

• Working Load Limit: 150kg

• Configuration: Stand-up base with integrated spring support

• Bearings: Acetal ball bearings for smooth, low-friction operation

• Construction: UV-resistant sheave with stainless steel head

• Application: Dinghies, sportsboats, control systems

• Brand: Ronstan – innovative, high-performance sailing hardware