Ronstan RF51140 50mm stand-up sailing block Ronstan RF51140 50mm stand-up sailing block
Ronstan RF51140 50mm stand-up sailing block

Ronstan

Ronstan RF51140 50mm Stand-Up Pulley Block | Series 50 Stainless Sailing Block

$109.00
Tax included.

The Ronstan RF51140 is a compact and reliable 50mm stand-up pulley block, designed for deck-mounted control systems on dinghies, keelboats, and small yachts. As part of the Ronstan Series 50, it features a UV-resistant acetal sheave and 316 stainless steel cheeks, providing excellent durability and smooth performance.

The stand-up base keeps the block upright, ensuring consistent line alignment for outhauls, vangs, sheets, and other control lines. Ideal for use where space is tight and rigging needs to stay streamlined and efficient.

✅ Key Features

  • Ronstan RF51140 – 50mm stand-up pulley block

  • UV-stable acetal sheave for smooth, low-friction operation

  • 316 stainless steel cheeks for marine-grade strength

  • Stand-up base maintains vertical orientation on deck

  • Ideal for vang systems, sheets, outhauls, and traveller lines

  • Medium-load capacity for small to mid-sized boats

  • Compact and corrosion-resistant for harsh marine conditions

  • Part of the trusted Ronstan Series 50 block range

Ronstan RF51140 50mm Stand-up Block specifications:

  • Sheave Diam. 50mm
  • Max. Rope Diam. 12mm
  • Max. Working Load 1650 lb
  • Breaking Load 3310 lb