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Description
Ronstan Series 40 BB Triple Block w/ Swivel HeadProduct Description Ronstan Series 40 BB Triple Block w Swivel Head Sheaves running on Acetal or Torlon ball bearings provide high performance & low friction. The 2 stage ball bearing system provides consistent performance over the full load range. Features: Low friction Acetal or Torlon bearing system Lightweight Cheek cut outs for easy bearing maintenance Features a swivel shackle head for full 360 rotation Specifications: Sheave 1 9 16 in. (40mm)
Product Description
Ronstan Series 40 BB Triple Block w/ Swivel Head
Sheaves running on Acetal or Torlon® ball bearings provide high performance & low friction. The 2-stage ball bearing system provides consistent performance over the full load range.
Features:
Low friction Acetal or Torlon® bearing system
Lightweight
Cheek cut-outs for easy bearing maintenance
Features a swivel shackle head for full 360° rotation
Specifications:
Sheave Ø - 1 9/16 in. (40mm)
Max. Rope Ø - 3/8 in. (10mm)
Max. Cable Ø - in (mm)
Pin Ø - 3/16 in. (5 mm)
M.W.L. - 1320 lb. (600 kg)
B. L. - 3090 lb. (1400 kg)
Weight - 6.9 oz. (194 g)
Applications:
Mainsheet
Halyard
Vang
Spinnaker control lines on off-the-beach catamarans, one design classes and sportsboats up to 8m (26ft)
Materials:
Acetal ball bearings
UV stabilised Acetal sheave
Grade 316 stainless steel load strap and head fitting
Impact and UV resistant, fibre reinforced Nylon cheeks
Sheaves running on Acetal or Torlon® ball bearings provide high performance & low friction. The 2-stage ball bearing system provides consistent performance over the full load range.
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
4.0 ★★★★★
Based on 15 reviews
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Product Reviews
★★★★★ 3
Cute and good !
Size: 1.8in for Puppy Dogs
My dogs like them! There kinda hard to clean but I just soak them in hot water and give them a good scrub! Can also use them for a fetch ball
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Reviewed in the United States on November 10, 2025
★★★★★ 5
DURABLE
Size: 2.8in for Small & Medium Dogs
My dog loves these balls almost as much as she loves tennis balls, which she tears up within a day.
These two balls have lasted over a week with no signs of wear.
I was unsure when I ordered them but they do bounce, not quite like a tennis ball but enough to keep my dog's attention.
When using toothpaste in these balls I had to put it deep into the openings or she just licks it off of the surface and when its that deep, it doesn't squeeze out like I think it should. It just stays in the crevasses and gets old and hard.
As a ball it's great, as a toothpaste delivery system it's not so great.
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Reviewed in the United States on October 30, 2023
★★★★★ 5
Perfect For Sophia!
Size: 1.8in for Puppy Dogs, Size: 1.8in for Puppy Dogs
These little balls are the perfect size for Sophia who is a 7 lb Yorkie with a teeny tiny mouth. The slots in the balls make them very easy for her little teeth to grab hold of and carry. The quality of the rubber is excellent, strong and durable. They're holding up great so far! She loves them and so does her Mama! 5 stars!
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Reviewed in the United States on April 23, 2024
★★★★★ 1
Horrible, don't buy
Size: 1.8in for Puppy Dogs
I wanted to love these. They had so much potential. It's a good size. It seems like a good shape. But ...
1) first red flag should have been the packaging. It looked like it was a dollar store item that had beenblost on the shelves for years.
2) the rubber is super flexible. I was expecting it to be sturdier. I can flatten the ball without lich force. Maybe that doesn't matter. Naybe flexible is good. But I never got a chance to test out it's durability against a pup because...
3) it smelled. I expected it to smell like rubber, like most rubber toys. Rubber smell is okay. Usually rubber smell goes away. But, this was NOT a rubber smell.
It smells like peppermint or something similar. It's like someone sprayed essential oils when mixing the rubber and now the smell will not leave.
I soaked it in dawn soap half the day and overnight. I rubbed. I scrubbed. The smell actually gets worst the more you scrub it!!! It's like a scented marker or scented eraser, but you do NOT want the scent in a dog toy!
My dog cannot smell the food in it because the smell of the weird mint-like scent is so overpowering. He saw it had food, and wanted it, but every time he started sniffing wildly, he would recoil.
Whoever thought it was a good idea to scent this was WRONG.
Mint in the form of an essential oil is extremely poisonous to dogs!! So, why they would put a mint-loke scent ijto the dog's rubber treat toy is beyond me.
I would return this if I hadn't throw out the package immediately. I considered pulling the package out of the trash once i realized the scent issue but other trash had already been dumped into the trash can over it and i didn't want to dig through trash.
The ball is still soaking in soap. I scrubbed again this morning. I let obe dry out. No luck. It actually seems to get worst the more you scrub, like it really is embedded in the rubber itself. Yuck!!!
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Reviewed in the United States on January 1, 2022
★★★★★ 5
Great enrichment
Size: 2.8in for Small & Medium Dogs
These are great for our 3 dogs, they’re durable and strong. The pup ford training treats fit great into these and it takes our dogs a good bit to get all the treats out. Easy to clean and a great enrichment toy, will buy again!
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Reviewed in the United States on February 6, 2026
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