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Description
Ronstan Series 100 Single Orbit BlockProduct Description Ronstan Series 100 Single Orbit Block Product Information Orbit blocks are a no compromise product range developed to meet the demands and expectation 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
Product Description
Ronstan Series 100 Single Orbit Block
Product Information
Orbit blocks™ are a no-compromise product range developed to meet the demands and expectation 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.Head posts of swivel blocks can be locked at 0 or 90 degrees.
Features
The highest strength-to-weight ratio
Minimal friction loss, especially when working at high loads
Totally reliable and trouble free performance
Simplicity of design and construction to facilitate maintenance and servicing
Elegant, functional styling and finish.
Lockable swivelling head post
High strength forged shackle
Specifications:
Sheave Ø: 4 in. (100mm)
Max. Rope Ø: 9/16 in. (14mm)
Max. Cable Ø: - in (mm)
Pin Ø: 5/16 in. (8mm)
M.W.L.: 6610 lb. (3000 kg)
B. L.: 14330 lb. (6500 kg)
Weight: 17.4 oz. (492 g)
Applications
Primary mainsheet, halyard and spinnaker systems on boats to 15m (50ft)
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
Forged grade 17-4PH stainless steel shackles
Grade 316 stainless steel head post
Product Information
Orbit blocks™ are a no-compromise product range developed to meet the demands and expectation 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.Head posts of swivel blocks can be locked at 0 or 90 degrees.
Features
Specifications:
Applications
Materials
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
4.3 ★★★★★
Based on 22 reviews
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Product Reviews
★★★★★ 5
Are holding up great, but needed the wide
I bought these shoes for my daughter to wear to kindergarten. They wear navy uniforms and she loves pink so I thought these were perfect. I ordered her size according to the size chart (but didn’t check width because she’s never needed wide shoes in the past). The normal width were too tight on her toes but the length was right. I returned them for the wide and they are perfect. 2 months into school they still look brand new. Just be sure to check both length and width. I printed a measuring guide from Saucony’s website.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 4, 2021
★★★★★ 5
Nice, Tough & Comfortable!
Size: 6.5 Wide Big Kid, Color: Black
Bought as an everyday school shoe for my 10 year old son. He likes them a lot and is holding up great through rough boy play, and they still look good after a couple months now.
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Reviewed in the United States on January 20, 2026
★★★★★ 5
Great
Size: 4.5 Big Kid, Color: Pink/Purple
perfect
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Reviewed in the United States on May 12, 2026
★★★★★ 5
Pink and purple perfection
Size: 13 Little Kid, Color: Pink/Purple, Size: 13 Little Kid, Color: Pink/Purple
Fits great and perfect colors for my (not so) little. This is her first pair of "tie" shoes so we're still learning, but the laces are a good length for teaching and practicing. She says they're very comfortable too.
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Reviewed in the United States on March 27, 2026
★★★★★ 5
TTS
Size: 5 Big Kid, Color: White
TTS, comfy
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 24, 2025
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