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Ronstan  |  SKU: RONRF55171  |  Manuf. Code: RF55171

Ronstan Series 55 BB Orbit Block, Upright Lead

$61.20 USD $72.00

Description

The Ronstan Series 55 BB Orbit Block, Upright Lead #RF55171 is your go-to for efficient and lightweight sailing performance. It's designed with a unique orbital ball-bearing system, making it perfect for those who need reliable lead blocks. Even though it's built to handle heavy loads, it remains incredibly light and easy to use.

Features & Benefits

  • Lightweight design with reduced mass in inactive areas
  • High working load capacity due to advanced bearing system
  • Dyneema® Link offering strength ten times greater than steel
  • 30% weight saving advantage over competitors

Constructed from high-quality materials, including a toughened, glass fibre reinforced Nylon frame and cheeks, and a carbon fibre reinforced, PTFE impregnated Nylon sheave, this block is made for durability and performance. The head fitting is crafted from Grade 316 stainless steel, ensuring longevity. This block is ideal for use in mainsheet systems and spinnaker sheets on dinghies, sportsboats, and small keelboats up to 9m.

Usage

Perfect for mainsheet and spinnaker sheet systems on dinghies, sportsboats, and small keelboats to 9m. It’s also suitable for halyard, vang, and backstay applications on boats up to 8m, as well as control line applications on larger yachts.

Features

Features:

  • Ultra Light Weight.
  • Low friction 2-stage Orbital ball bearing system.
  • Highest working load in its class.
  • Low profile and compact.
  • High performance cleating.
  • Swivel shackle head for unlimited block rotation.
  • Stainless steel shackle head and compatibility with sharp fixing points.
  • Ultra low profile integrated becket.

Technical Information


DescriptionImperialMetric
Sheave Ø2 1/6 in.55.00 mm.
Maximum Rope 2/5 in.10.00 mm.
Maximum Working Load1102.50 lb.500.00 kg.
Breaking Load2205.00 lb.1000.00 kg.
Weight3.21 oz.91.00 gr.