Need assistance? Call us at (888) 808-5549

  • USA warehousing

  • Friendly support

  • Best prices

  • Secure checkout
Ronstan  |  SKU: CW70607

Ronstan Series 40 All Purpose Block - Single Cheek - RF41811

$80.80 $95.06

Estimated Shipping Widget will be displayed here! (with custom color)

Authorized dealer

Your #1 trusted source for Ronstan products.

Shipping info

Most orders are processed and shipped from our USA warehouse within 1 to 3 business days of an order being placed (excluding weekends and holidays).

If, in the case, the item has a different handling and/or shipping estimate, it will be clearly displayed under the Add to cart button.

Click here to view our full shipping policy

Returns info

Eligible for returns: Yes

Time frame allotted: 30 days from the date of delivery

*Item(s) must be in new and unused condition to be eligible

To learn how to request a return please visit our return & refund policy:

Click here to view our full return & refund policy

Photo of Friendly Avanquil Customer Support Representative

Need assistance? We're happy to help!

Phone Icon Call us Text Icon Text us Customer Support IconText or Call: (888) 808-5549

Description

Series 40 All Purpose Block - Single Cheek

Features:

  • Exceptionally high working loads
  • Low maintenance, long service life
  • Self-lubricating sheave

All purpose (AP) blocks are a great all around solution. Self-lubricating Acetal polymer sheaves running on polished stainless steel races perform equally well with dynamic loads and high static loads. For durability and a long service life, these blocks are the right choice for sheets, halyards and control line applications for cruising and racing.Can be mounted on masts and booms using the curved surface adapter. Can be stacked to create a double version, but no more than 60% of the rated working load should be applied to the upper sheave. Stackable with Ronstan Series 40 deck organizers.

Applications:

  • Mainsheet
  • Halyard
  • Vang
  • Spinnaker control lines on off-the-beach catamarans, one design classes and sportsboats up to 8m (26ft)

Materials:

  • U.V. stabilised Acetal sheaves
  • Impact and U.V. resistant, fiber reinforced Nylon cheeks
  • Grade 316 stainless steel bearing race
  • Alloy cheek plates

Manufacturer : Ronstan
Manufacturer Part No : RF41811
UPC : 9316800341795

Payment & Security

Payment methods

  • Amazon
  • American Express
  • Apple Pay
  • Diners Club
  • Discover
  • Meta Pay
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • Venmo
  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

Customer Reviews

Be the first to write a review
0%
(0)
0%
(0)
0%
(0)
0%
(0)
0%
(0)

More from Ronstan

View all

More Marine - Sailing - Blocks

View all

Let customers speak for us

from 298 reviews
Weld Mount AT-5 Large White Nylon Tie Mount - Qty. 500 - 805500
Weld mounts

Quick response, will need more products in the near future

Rick Hambleton
Weld Mount AT-5 Large White Nylon Tie Mount - Qty. 500 - 805500
K & M Manufacturing GreyWolf™ Skid Steer Land Plane Attachment
Works/simple

I like the simple design. Works well

John Mcdonald
K & M Manufacturing GreyWolf™ Skid Steer Land Plane Attachment
BLUETTI AC180P Solar Portable Power Station | 1,800W 1440Wh

does the job well

C.Allen
BLUETTI AC180P Solar Portable Power Station | 1,800W 1440Wh
Overland Vehicle Systems Nomadic Awning 270 Awning & Wall 1, 2, & 3, Mounting Brackets - Passenger Side

Extremely simple to install and assemble.

Wesley Becker
Overland Vehicle Systems Nomadic Awning 270 Awning & Wall 1, 2, & 3, Mounting Brackets - Passenger Side
DetailK2 DK2 POWER 14-Inch 14 HP 429 cc Stump Grinder (Electric Start) -OPG888E

Works much better than expected. Bit tricky to maneuver, but does a great job overall.

Kelli Wilson
DetailK2 DK2 POWER 14-Inch 14 HP 429 cc Stump Grinder (Electric Start) -OPG888E
DetailK2 DK2 POWER 12-Inch 14 HP 429 cc Stump Grinder -OPG777

This is definitely big and heavy but gets the job done. Finally got one, and it paid off after just a few stumps.

Alan Clark
DetailK2 DK2 POWER 12-Inch 14 HP 429 cc Stump Grinder -OPG777
Touchstone Sideline Infinity 3 Sided 60" WiFi Enabled Smart Recessed Electric Fireplace 80046 (Alexa/Google Compatible)

looks awesome with lifelike flames, runs all day, every day, and adds style without gobbling up electricity.

Eric E.
Touchstone Sideline Infinity 3 Sided 60" WiFi Enabled Smart Recessed Electric Fireplace 80046 (Alexa/Google Compatible)
Aqua Marina 11’0″ AIRCAT Inflatable Catamaran. 3.35m with DWF Air Deck
Awesome boat

It's light, steady, and a blast to use.

Dr_Higgins
Aqua Marina 11’0″ AIRCAT Inflatable Catamaran. 3.35m with DWF Air Deck
Dakota Lithium 12v 54ah Deep Cycle Lifepo4 Battery

Thinking about grabbing a couple more and maybe a solar charging setup.

bruce adkins
Dakota Lithium 12v 54ah Deep Cycle Lifepo4 Battery
DetailK2 DK2 POWER 12-Inch 14 HP 429 cc Stump Grinder -OPG777

Works better than expected, and assembly was simple.

Jan W.
DetailK2 DK2 POWER 12-Inch 14 HP 429 cc Stump Grinder -OPG777
Sea Eagle FastCat14™ Catamaran Inflatable Boat

Very satisfied with the boat 😊

Em Olson
Sea Eagle FastCat14™ Catamaran Inflatable Boat
DetailK2 DK2 POWER 5-Inch 14 HP 429 cc Auto-Feed Disk Chipper Shredder (Electric Start) -OPC505AE

chipper was easy to assemble and sturdy. exactly what i needed for clearing trees. just wish i had more time to use it!

clifton01
DetailK2 DK2 POWER 5-Inch 14 HP 429 cc Auto-Feed Disk Chipper Shredder (Electric Start) -OPC505AE
Power King 4" 9.5HP CHIPPER SHREDDER W/ KOHLER COMMAND PRO ENGINE

Met expectations, very satisfied with performance.

Vern
Power King 4" 9.5HP CHIPPER SHREDDER W/ KOHLER COMMAND PRO ENGINE
Yoshino Power B4000 SST - 4000W | 2611Wh Solid-State Portable Power Station

Works as expected 🙂

Jake Gutierrez
Yoshino Power B4000 SST - 4000W | 2611Wh Solid-State Portable Power Station
DetailK2 DK2 POWER 5-Inch 14 HP 429 cc Auto-Feed Disk Chipper Shredder (Electric Start) -OPC505AE

Absolutely fantastic! Turned a mountain of branches into mulch in no time.

Roderick Ramsey
DetailK2 DK2 POWER 5-Inch 14 HP 429 cc Auto-Feed Disk Chipper Shredder (Electric Start) -OPC505AE
Ronstan

Ronstan Series 40 All Purpose Block - Single Cheek - RF41811

$80.80 $95.06
Series 40 All Purpose Block - Single CheekFeatures: Exceptionally high working loads Low maintenance, long service life Self-lubricating sheave All...
View product

  • Fast & free shipping

    Reliable USA warehousing

  • Friendly support

    Chat, email & phone

  • Verified reviews

    Feedback you can trust

  • Secure payment options

    Visa, Mastercard, Amex, PayPal
Back to top