Ronstan Series 30 Orbit Block Single with Swivel #:  19433
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Ronstan Series 30 Orbit Block Single with Swivel

Free Shipping This Item qualifies for Free Shipping on orders over $99! More Info...   #19433
Brand:  Ronstan Marine
MFG Part#:   RF35100
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Ball Bearing Orbit Blocks™ boast the highest strength-to-weight ratio available. This is achieved through all-composite reinforced polymer materials and multiple attachment options. Their precision design provides the optimum number of ball bearings for minimum friction while weight reduction is achieved through the use of fibre-reinforced composites in the block head, cleat arms and beckets.

• Lightweight.
• Highest working load in its class.
• Secure, versatile and secure attachement.
• Low profile and compact.
• Ultra low profile thru-sheave becket.
• Low friction 2-stage ball bearing system provides consistent performance over the full working load range.
• Sheave: High compression strength carbon black Acetal.
• Ball Bearings: High compression strength Acetal.
• Frame/Cheeks: Toughened, glass fibre reinforced Nylon.
• Link: UV stabilised, multi-strand impregnated SK75 Dyneema®.

Mainsheet systems and spinnaker sheets on dinghies to 5 m (16 ft), halyard, vang and backstay applications on boats to 5 m (16 ft), control line applications on larger yachts.

  • Sheave Dia. 1 3/16" 30 mm 
  • Max. Rope Dia. 5/16" 8 mm 
  • Maximum Working Load 661 lb 300 kg 
  • Breaking Load 1323 lb 600 kg 
  • Weight 1.1 oz 32 g

Share your knowledge of this product with other customers... Be the first to review this product Shipping FAQ

Q. Do you offer Free Shipping?
A. We have free ground shipping via UPS or Canada Post within Canada on most orders of $99 or more (pre-tax).

Q. What do you mean by most orders?
A. Some items are exempt from this offer and are indicated on the product page. Exempt items are usually bulky or heavy items such as buoys. Over 98% of the items on qualify for the free shipping offer.
To see what your shipping charge (if any) will be you can add the item(s) and quantities to the shopping cart and you will see a shipping cost calculator

Q. Where do you ship from?
A. We ship from Halifax, NS

Q. What is the delivery time?
A.  NS, NB, PE: 1 - 2 business days,
      ON, QC, NL: 2- 4 business days
      MB, SK, AB: 4-5 business days
      BC: 5-7 business days
When your order ships you will be emailed a tracking number which will give you the scheduled delivery date

Q. Do you offer Express Shipping?
A. Yes we can ship your order express. Please send an email and we will provide you with a quote (

Q. Do you require a signature on delivery?
A. We sometimes add a signature requirement especially if it is a high value package

Please Note:
Very Remote areas are exempt from Free Shipping offer. These are typically remote northern areas. Nunavut as well as many parts of the Yukon and NWT are exempt from free shipping

Money Back Guarantee
Guarantee You may return your purchase to us (with a return authorization number - use this form) within 30 days and we will refund the purchase price of the product. Items which are cut to order (rope, wire etc), software, chart cards and printed materials (paper charts, books) are not returnable.

Other Products in View More
Ronstan Series 30 Orbit Block Stand-Up with Swivel #: 19436 

Our Price: CAD$36.95 
Ronstan Series 30 Orbit Cheek Block #: 19438 

Our Price: CAD$21.95 
Ronstan Series 30 Orbit Double Block #: 19439 

Our Price: CAD$49.95 
Ronstan RF35322 Series 30 Orbit Triple Block with Cleat #: 19443 

Our Price: CAD$109.95
Sale: CAD$76.95
You Save: CAD$33.00!
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