Ronstan Series 40 Ball Bearing Orbit Block™, Auto Ratchet
SKU: 71461194317

Ronstan Series 40 Ball Bearing Orbit Block™, Auto Ratchet

Sale price$306.00 Regular price$340.00
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Ships within 48 hours · Estimated delivery Jul 9 - Jul 14

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Description

Ronstan Series 40 Ball Bearing Orbit Block™, Auto RatchetSingle ratchet block with automatic load sensing ratchet engagement FEATURES Up to 14: 1 holding power highest available! Smooth easing of sheets Fully Automatic load sensing ratchet engagement Easily fitted and securely retained Dyneema link head SPECIFICATIONS Product Specifications Type of Block Single, Ratchet Sheave diameter (mm) 40mm B. L. (kg) 500 M. W. L. (kg) 175 Max. Rope diameter (mm) 9 Weight (g) 35 Rope (mm) 9 Automatic ratchet option

Single ratchet block with automatic load sensing ratchet engagement

FEATURES

Up to 14:1 holding power - highest available!

Smooth easing of sheets

Fully Automatic load sensing ratchet engagement

Easily fitted and securely retained Dyneema® link head

SPECIFICATIONS

Product Specifications
Type of Block Single, Ratchet
Sheave diameter (mm) 40mm
B.L. (kg) 500
M.W.L. (kg) 175
Max. Rope diameter (mm) 9
Weight (g) 35
Rope Ø (mm) 9

 

Automatic ratchet option

With automatic models, the ratchet mechanism engages when load is applied, but switches off when it's released. This lets the sheet run out smoothly and freely-great for rapid easing of the sheet and for gybing asymmetric spinnakers.

Awesome ratchet block holding power

Quite simply, Ronstan Ratchet Orbit blocks™ have the highest holding power available. The sophisticated NC-machined sheave features Generation 2 of our patented sheave cross-hole geometry. The Series 40 delivers up to 14:1 holding power, almost double that of our nearest competititor.

The unique sheave design has 8 gripping faces which directly resist loaded line movement. Traditional designs have an angled resistance to line movement.  Our Generation 2 design has straight resistance faces which both distribute the load and minimise rope wear. These faces are offset from the radial line, to draw the rope down into the gripping area when under load.

Simple and secure attachment

The Dyneema® Link is easily fitted and is retained securely by a moulded retainer clip. The flexible link can be left with one end attached to the block when fitting - no more lost shackle pins.

The system is compatible with Dyneema® strops, webbing and carbon connection points - much more so than steel loop tops or shackles.

Smooth easing of sheets

With auto models the sheet runs out smoothly and freely as soon as the ratchet mechanism disengages. When engaged, and with manual models, the sheave cross - hole geometry eliminates the 'shuddering' ease-out that you can expect from traditional v-groove ratchet blocks.

Low profile stand-up kit allows  0° or 90° alignment

Stand-up kits feature a clatter-free rubber boot.  You can attach the Dyneema® link so that the block is aligned with the stand-up base or across it.  It's a neat low-profile solution which allows full articulation.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. 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
SKU: 71461194317

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4.8 ★★★★★
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Verified Purchase
Stephanie
Bozeman, US
★★★★★ 4
Nice jewelry box
The jewelry box is nicer than expected! Just wish it was a little bigger, but ok for traveling.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 20, 2025
P
Verified Purchase
Peggy
Los Angeles, US
★★★★★ 5
Great product
Great little jewelry box better than I thought and holds so much also came with an earring holder will buy again.!
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Reviewed in the United States on December 22, 2025
J
Verified Purchase
Joy
Belleville, US
★★★★★ 5
I like it
Good box
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Reviewed in the United States on February 19, 2026
A
Verified Purchase
AuntBerBer83
Lake Worth, US
★★★★★ 3
Small but Functional
Small, but works for what little bit of jewelry I wear!
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Reviewed in the United States on August 12, 2025
N
Verified Purchase
niresha allen
Carnegie, US
★★★★★ 5
Awesome
Organization is good fit for all my jewels
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Reviewed in the United States on March 26, 2026

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