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Ronstan RF30101 Series 30 Ball Bearing Block Single Loop Top

Manufacturer

Ronstan

<h3>About Ronstan – A Legacy Built on the Water</h3><p>Few names in the sailing world carry as much weight as Ronstan. <strong>Founded in 1953</strong> by Ron Allat and Stan Lenepveu, the company began as a small boatbuilding operation in Highett, a suburb of Melbourne, Australia. What started as handcrafting custom yacht fittings for fellow sailors at the nearby Black Rock Yacht Club steadily grew into one of the most respected sailboat hardware manufacturers on the planet. The brand name itself is a nod to its founders — Ron and Stan — whose passion for sailing and precision craftsmanship shaped the company's DNA from day one.</p><p>Today, <strong>Ronstan International</strong> is a globally recognised manufacturer and supplier of sailboat hardware, rigging components, winches, sailing gear, and accessories, with its head office remaining in Braeside, Victoria, Australia. The company has established manufacturing facilities in Australia, Denmark, and Indonesia, along with sales offices in the United States, and distributes products to sailors in over 40 countries around the world. In November 2023, Ronstan joined <strong>Groupe Wichard</strong>, aligning with an industry leader whose portfolio spans more than ten world-renowned brands in the sailing and safety markets — a move that further strengthens Ronstan's global reach and product offering.</p><h3>Engineered for Every Sailor, Proven at the Highest Levels</h3><p>Ronstan's reputation spans the full spectrum of sailing — from first-time dinghy sailors to elite competitors at the America's Cup and Olympic Games. The brand serves as the official supplier to the Australian Sailing Team, and Ronstan hardware has appeared aboard medal-winning boats across multiple Olympic campaigns. That pedigree at the pinnacle of racing directly fuels the innovation available to everyday sailors: the demanding performance requirements of top-tier competition have driven many of the technical breakthroughs found throughout Ronstan's broader product range.</p><p>The company's catalog encompasses well over 2,000 products, including pulley blocks, traveller systems, furlers, rope cleats, stainless steel fittings, shackles, snap shackles, and winches. Whether you're outfitting a small racing dinghy, a family cruiser, or an offshore race yacht, Ronstan offers hardware designed and tested to perform in real-world conditions. Their in-house capabilities span design, engineering, precision injection moulding, CNC machining, metal pressing, and assembly — all of which contribute to the consistent quality sailors have come to expect from the brand.</p><h3>Top Ronstan Product Categories</h3><p>Among Ronstan's most popular product lines are their <a href="/11561-ronstan-tiller-extensions-accessories-202641">Tiller Extensions &amp; Accessories</a>, which encompass both their renowned carbon fibre and alloy tiller extension ranges. Whether you need a lightweight, rigid fixed-length stick or a telescopic option for adjustable reach, Ronstan's tiller extensions are engineered for decisive helm response and positive grip in all conditions. Complementing these are Ronstan's <a href="/11561-ronstan-tiller-extensions-accessories-201068">Tiller Extension Accessories</a> — including universal joints, retaining clips, and end knobs — that allow sailors to fine-tune their setup or replace worn components with ease.</p><p>Ronstan also produces a well-regarded line of <a href="/11561-ronstan-fairleads-201944">Fairleads</a>, designed to guide lines smoothly across a boat's deck. Available in UV-stabilised nylon and with optional stainless steel liners for added strength and longevity, these practical fittings are a staple of both dinghy and keelboat rigging setups worldwide.</p><h3>Why Choose Ronstan?</h3><ul><li><strong>70+ years of marine hardware expertise</strong> rooted in Australian sailing culture</li><li>Products trusted by Olympic sailors, offshore racers, and cruising sailors alike</li><li>Over 2,000 products covering everything from small dinghy fittings to superyacht systems</li><li>Advanced manufacturing across three international production facilities</li><li>Part of Groupe Wichard, adding complementary product depth and global support</li></ul>

Part Number

RF30101
06/03/2036 9:23 AM
Sale Price

$16.40

In Stock (7)

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Usually delivered within 2 days

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Product Details

The Ronstan Series 30 Ball Bearing Block with single loop top head fitting delivers high-performance, low-friction operation for dinghies, catamarans, and yacht control line systems. This compact 30mm block features a sophisticated 2-stage ball bearing system that maintains consistent performance across the full working load range.

Key Features:

  • Advanced 2-stage ball bearing system for minimal friction and consistent performance
  • High static and dynamic load capacity with 300kg (660 lbs) maximum working load
  • Breaking load of 750kg (1,650 lbs) for reliable safety margin
  • Lightweight construction at just 28g (1.0 oz)
  • Acetal or Torlon ball bearings for exceptional smoothness
  • Versatile loop top head fitting can accept a shackle in two planes for proper alignment
  • UV-stabilized Acetal sheave resists sun damage and degradation
  • Impact-modified, fiber-reinforced, UV-stabilized Nylon cheeks
  • Marine-grade 316 stainless steel load straps and fittings

Specifications:

  • Sheave Diameter: 30mm (1-3/16 inches)
  • Maximum Rope Diameter: 8mm (5/16 inches)
  • Maximum Working Load: 300kg (660 lbs)
  • Breaking Load: 750kg (1,650 lbs)
  • Weight: 28g (1.0 oz)

Applications:

  • Primary lead blocks on dinghies and catamarans
  • Control lines on larger yachts
  • Any application requiring lightweight, high-performance turning blocks

Ronstan's Series 30 blocks are engineered for sailors who demand reliability and performance. The combination of premium materials, precision ball bearings, and marine-grade hardware makes this block ideal for both racing and cruising applications.

It was okay. Product doesn't completely look brand new, but I hope it does the job.

Fast check out..

so far so good

Simple and efficient checkout.

In-depth details. Fair price. Convenience. Amazon compatibility. Very nice.

Just recieved my order and the pit jug and spout were perfect. The shipping was very fast and it was by far the best price I could get on these products. Autoplicity is great.

So far so good...

Fast

W]wwwwww

I have searched for this part all day I called and the people on the phone were very polite. If they have this part and ship it fairly quickly I will definitely be using this company in the future.

They had two items that I wanted in stock with the lowest price I've seen online anywhere, and had super affordable shipping options.

Authentic, hard to find item listed for the least expensive price online! Good customer service and fast shipping time!!

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