SKU: 16322879631

Ronstan RF56101 Series 55 Orbit Ratchet & Auto-Ratchet Block

Sale price$84.30 Regular price$93.67
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Ships within 48 hours · Estimated delivery Aug 8 - Aug 13

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Description

Ronstan RF56101 Series 55 Orbit Ratchet & Auto-Ratchet BlockRonstan RF56101 Orbit Ratchet Block. Designed for applications where weight is of paramount importance. The securing loop is easily changed and we suggest that you use either a forged eye or shackle to secure the block as pressed steel fittings can be sharp and will prematurely wear the rope mounting. Features: Automatic and Manual ratchet in one block Up to 20: 1 holding power Easily fitted and securely retained Dyneema Link head Smooth easing of

Ronstan RF56101 Orbit Ratchet Block. Designed for applications where weight is of paramount importance. The securing loop is easily changed and we suggest that you use either a forged eye or shackle to secure the block as pressed steel fittings can be sharp and will prematurely wear the rope mounting.

Features:

  • Automatic and Manual ratchet in one block
  • Up to 20:1 holding power
  • Easily fitted and securely retained Dyneema Link head
  • Smooth easing of sheets
  • High performance cleating

Technical:

  • Sheave Diameter 55mm
  • Maximum Rope Diameter 10mm
  • Maximum Working Load 250kg
  • Breaking Load 500kg
  • Weight 78g

Materials:

  • Ball bearings - High compression strength carbon black Acetal
  • Stage 2 bearing - Carbon fibre reinforced, PTFE impregnated Nylon
  • Frame/Cheeks - Toughened, glass fibre reinforced Nylon
  • Rope Link: UV stabilised, multi-strand impregmented SK75 Dyneema

Applications:

  • Mainsheet systems on dinghies
  • Spinnaker sheets on dinghies
  • Control line applications on larger yachts

Some RT Orbit Blocks™ can be set to Automatic mode or Manual mode to suit the application or user’s preference.

OPERATION

MANUAL MODE
RT blocks leave the factory in Manual mode, with the black MODE switches on both sides of the block positioned away from the red ON/OFF knob.

Use the red ON/OFF knob to turn the ratchet ON or OFF.

AUTO MODE
With the block in Manual mode, turn the ratchet off by rotating the red ON/OFF knob to the OFF position.

Slide the black MODE switch firmly toward the red ON/OFF knob until it locks into the recess in the knob. Repeat with the MODE switch on the other side of the block.

The block is now in Auto mode.

To return to Manual mode, slide the black MODE switches on both sides of the block firmly away from the red ON/OFF knob. Now use the red ON/OFF knob to turn the ratchet ON and OFF.

We recommend using the RF613S shackle to securely attach the block to the existing deck eye on your boat. This helps the block maintain maximum freedom of movement and reduces the risk of wear on the Dyneema loop due to sharp edges on the deck eye, then use the 8072 Rubber Boot to keep the block upright and provide a neat finish. See related items.

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: 16322879631

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4.7 ★★★★★
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KO
Port Orchard, US
★★★★★ 4
My dog didn’t take to it, but yours might.
Color: Brown-O
This is a very durable toy that’s reasonably priced. For some reason, my dog didn’t take to it. It might be the round shape, but there’s nothing wrong with the product. The size is good for large dogs. My dog is 50 pounds and there’s a chance it was too big for him. I’m not sure. But I think if your dog has enjoyed other similar toys, this is a good buy.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 15, 2025
B
Verified Purchase
B. Ferrante
Draper, US
★★★★★ 5
Fun and practical for our power chewer
Color: Brown-O
Four paws up! It is great for chewing and for rolling in a fetch game. Our powerful chewer loves it!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 23, 2025
S
Verified Purchase
Shelly
Natrona Heights, US
★★★★★ 5
Durable for quite awhile.
Color: Brown-X
Yes, two pits can only rough up edges after time. It’s durable for a lot longer then other toys.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 15, 2025
A
Aurabella
Louisville, US
★★★★★ 5
Great!
Color: Brown-X
This bone has held up to my dog who is the destroyer of everything. She loves this thing, chews on it all the time and its the perfect size for her. Great value for the price and will purchase again in the future once she gets tired of it.
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Reviewed in the United States on September 16, 2025
M
Mermaid Mommy
Waukegan, US
★★★★★ 5
Chewer
Color: Brown-O
This chew toy is great! My three dogs all love to gnaw on it. Its been chomped on for about 2 months now and still going strong! Theres no sharp edges and its very durable!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 18, 2025

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