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Ships within 48 hours · Estimated delivery Aug 1 - Aug 6
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Description
Ronstan Series 100 Orbit Block, Single, Universal HeadProduct Description Ronstan Series 100 Orbit Block, Single, Universal Head Product Information Orbit blocks are a no compromise product range developed to meet the demands and expectations of the very dedicated and increasingly professional racing sailor. Side cheeks incorporating head structure and hub are precision machined as a single part from solid alloy, leaving material only where it contributes to the load carrying capacity of the block and
Product Description
Ronstan Series 100 Orbit Block, Single, Universal Head
Product Information
Orbit blocks™ are a no-compromise product range developed to meet the demands and expectations of the very dedicated and increasingly professional racing sailor. Side cheeks incorporating head structure and hub are precision machined as a single part from solid alloy, leaving material only where it contributes to the load carrying capacity of the block and eliminating the need for additional fasteners. The Orbit sheave has captive acetal or Torlon® ball bearings for side thrust loads, eliminating the need for side retainer plates. This reduces weight and allows for a wider bearing surface that can accommodate longer Torlon® needles – achieving a substantially higher strength-to-weight ratio.
Features
- The highest strength-to-weight ratio
- Minimal friction loss, especially when working at high loads
- Captive ball bearings for side thrust loads
- Totally reliable and trouble free performance
- Simplicity of design and construction to facilitate maintenance and servicing
- Elegant, functional styling and finish.
Specifications
- Sheave Ø - 4 in.
- Max. Rope Ø - 5/8 in.
- Pin Ø - 3/8 in.
- M.W.L. - 9350 lb.
- B.L. - 18700 lb.
- Weight - 25.4 oz.
Applications
- Primary mainsheet, halyard and spinnaker systems on boats to 16m (53ft)
- Secondary mainsheet, vang blocks on boats to 18m (60ft)
- Backstay systems on boats to 14m (46ft)
- General control line and lead block applications on larger yachts
Materials
- Fully machined Alloy cheek plates
- Alloy sheaves with captive ball races
- Torlon® needle rollers
- Carbon black Acetal ball bearings
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.1 ★★★★★
Based on 10 reviews
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Product Reviews
★★★★★ 5
Great room separator
Color: Black
The panels are much longer than we expected! We only needed 3 of the 4 proivided. It's slightly flimsy, but holds together nicely. The screwdriver that came with did not fit the screws, but luckily we had a Phillips head. It's very lightweight. It is definitely a good value for the money.
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Reviewed in the United States on February 10, 2026
★★★★★ 1
Never got to try it because it was broken
Color: Black
Came with a broken piece and is taking forever to get a refund…there wasn’t an option for a replacement
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Reviewed in the United States on March 15, 2026
★★★★★ 3
Room divider
Color: Black, Color: Black
It was much simpler than anticipated. I don't think it's very sturdy and it lacks weight, but it's attractive.
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Reviewed in the United States on March 20, 2026
★★★★★ 5
Great product
Color: Black
This is very sturdy and great quality. Its quite cheap for what your getting to it’s not cheap thin like plastic it feels thick and you could put a LITTLE weight on it it’s stable and protects your privacy.
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Reviewed in the United States on April 16, 2026
★★★★★ 5
Love it it was perfect for what I needed it for. Good quality!
Size: 4 Panel, Color: Black
It like a very dark chocolate brown/black. What I liked most about it is that you just pull it out of the box take the long plastic film off of it and it's ready to go. It has protective feet on the bottom. It's very attractive and it was so easy. It's so nice when you have a product you don't have to assemble.
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Reviewed in the United States on May 13, 2026