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Ronstan RF35302 Series 30 BB Orbit Block Triple 30mm

Manufacturer

Ronstan

<h3>Ronstan: Precision Sailing Hardware Built for Every Sailor</h3><p><strong>Ronstan</strong> is one of the most respected names in sailboat hardware — and with good reason. <a href="/11561-ronstan">Ronstan</a> traces its roots back to 1953, when two Australian sailors, Ron Allatt and Stan Lenepveu, founded Ronstan Marine Equipment Pty Ltd in Melbourne, Australia. What started as a passion project supplying handcrafted yacht fittings to their local sailing club gradually grew into a global enterprise recognized for engineering excellence and real-world performance.</p><p>Today, Ronstan is headquartered in Braeside, Victoria, Australia, with international offices in the United States and Denmark, and production facilities across three continents. The brand distributes to more than 40 countries and handles upwards of 4.9 million units out of its Melbourne facility every year. In November 2023, Ronstan joined Groupe Wichard, further cementing its place among the world&apos;s most influential marine hardware groups.</p><h3>Engineering That Performs On the Water</h3><p>What sets Ronstan apart from generic marine suppliers is its deep commitment to innovation and in-house manufacturing capability. Ronstan&apos;s engineering teams — spread across Australia, the United Kingdom, and Denmark — draw on diverse sailing traditions to develop products that meet the demands of wildly different markets: from club dinghy racers to offshore bluewater cruisers. The brand&apos;s catalog spans blocks, winches, travelers, furling systems, batten systems, stainless steel rigging hardware, and a full suite of deck gear. Ronstan is also the official hardware supplier to the Australian Sailing Team.</p><p>The brand&apos;s in-house manufacturing includes precision CNC machining of aluminum, brass, and stainless steel, as well as advanced plastic injection molding using high-performance engineering polymers — including composites reinforced with up to 60% long-strand glass and carbon fiber. This vertical integration means Ronstan controls quality from design to delivery.</p><h3>Core Product Categories</h3><p>Three categories stand out as workhorses of the Ronstan lineup. <a href="/11561-ronstan-fairleads-200387">Ronstan Fairleads</a> are purpose-designed to guide, contain, and correct the lead angle of control lines across a range of deck configurations — a deceptively simple piece of hardware that plays a critical role in clean, friction-free sail handling. For securing lines under load, <a href="/11561-ronstan-cleats-200268">Ronstan Cleats</a> offer a comprehensive range spanning jam cleats, vee cleats, and the brand&apos;s well-known C-Cleat&trade; and T-Cleat&trade; cam cleat families, each engineered for reliable cleating and easy release in all conditions. Completing the rigging equation, <a href="/11561-ronstan-shackles-200937">Ronstan Shackles</a> — including the innovative Triggersnaps&trade; snap shackle range — are individually proof-load tested and designed for intuitive one-handed operation, making them a trusted choice for racers and cruisers alike.</p><h3>From Dinghies to Maxis</h3><p>One of Ronstan&apos;s most distinctive qualities is its breadth. The same brand that equips Olympic-class dinghies also supplies hardware to some of the largest and fastest offshore racing yachts in the world. Whether you&apos;re outfitting a small club boat or a serious offshore campaigner, Ronstan&apos;s catalog has a solution engineered to the right weight, load rating, and finish for the task at hand.</p>

Part Number

RF35302
09/13/2036 6:00 AM
Sale Price

$40.23

In Stock (5)

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Usually delivered within 2 days

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Fitment guaranteed

Fitment guaranteed

Product Details

The Ronstan Series 30 BB Orbit Block Triple delivers exceptional strength-to-weight performance for modern sailing rigging systems. This 30mm triple block features an innovative two-stage bearing system and engineered composite construction that makes it ideal for mainsheets, boom vangs, backstays, halyard tuning systems, Cunninghams, and other control lines on dinghies through larger yachts.

Advanced Two-Stage Bearing System:

  • High compression acetal orbital ball bearings migrate to loaded areas of the sheave for efficient handling of light to moderate loads
  • PTFE-impregnated nylon bearing with carbon fiber reinforcement supports higher static loads
  • Smooth operation throughout the entire load range with both conventional and high-tech lines

Lightweight Engineered Design:

  • Glass fiber reinforced nylon cheeks and head provide maximum strength with minimal weight
  • Thinner cheeks between sheaves reduce overall weight while effectively separating lines
  • Hollow bearing at sheave center serves as integrated becket for additional versatility
  • Can be converted to soft attachment using Dyneema link (Ronstan RF9003-70 sold separately)

High-Performance Materials:

  • UV-resistant acetal high compression sheave compatible with 5/16" (8mm) conventional doublebraid and high-tech 12-strand lines
  • Shackle pin diameter: 5/32"
  • Highest working load capacity in its class

The triple sheave configuration is particularly well-suited for applications requiring line separation and multiple turning points, making it an excellent choice for backstay systems, boom vangs, mainsheet systems, and general dinghy control lines that are cleated remotely.

Products specifications

Diameter

5/16 Inch or 8 mm

Mount Type

Side Shackle

Type

Triple

Becket

No Becket

Direction

Any

Integral Cleat

No Integral Cleat

Ratchet

Non Ratcheting

Safe Working Load

1213 Pounds

Sheave Diameter

1 3/16 Inches or 30 mm

Ordering was very easy, and the part shipped right away. Will use autoplicity again without a doubt.

Excellent

had the part I needed at the most competitive price and easy to find/purchase from their site.

Great experience so far

Best price found.

thanks

Thank you!

Easy!

Great Communication and instant shipping. Well done!

Good so far

GREAT

Cheapest I could find anywhere !!!

HOPEFULLY FOUND WHAT I WAS LOOKING FOR! THANKS RON

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