SKU: 5663223634

Ronstan Series 40 Ball Bearing Orbit Block - Cheek [RF45151]

Sale price$30.34 Regular price$33.71
Save 10%

Pay in installments of $8.43 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 20 - Aug 25

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Ronstan Series 40 Ball Bearing Orbit Block - Cheek [RF45151]Series 40 Ball Bearing Orbit Block Cheek Features: Ultra Lightweight Low friction 2 stage Orbital ball bearing system Highest working load in its class Low profile and compact High performance cleating Base suits curved mounting surface Low mounting points for maximum strength Lightweight Kilogram for kilogram of working load, BB and RT Orbit Blocks are the worlds lightest. The unique orbital design allows the bearing to only be in the active areas of

Series 40 Ball Bearing Orbit Block - Cheek

Features:

  • Ultra Lightweight
  • Low friction 2-stage Orbital ball bearing system
  • Highest working load in its class
  • Low profile and compact
  • High performance cleating
  • Base suits curved mounting surface
  • Low mounting points for maximum strength

Lightweight

Kilogram for kilogram of working load, BB and RT Orbit Blocks™ are the world’s lightest. The unique orbital design allows the bearing to only be in the active areas of the floating sheave. This minimizes the mass of the inactive return race and hub.

Weight and bulk are further reduced in the different block configurations. The ball bearing single and becket block has a through-sheave becket arrangement. The result? The lowest weight possible.

Multi-sheave blocks have only single intermediate cheeks and an ultra-light and efficient head arrangement. This gives a 30% weight saving advantage over the nearest competitor. Other brands just link together their single blocks. This results in unnecessary double cheeks between each sheave, held together by a heavy steel channel across the top of the block.

Highest Working Load In It's Class

The orbital ball-bearing arrangement gives the largest possible bearing race diameter. This maximizes load performance. The proven Ronstan 2-stage bearing system features high compression grade acetal ball bearings and a secondary full-contact bearing. This gives minimum friction across the full working load range.

The floating sheave and bearing system is supported by a fiber-reinforced load frame. The design was computer modeled to be stress optimized.

Recommended fasteners - 3 x 4mm (5/32") countersunk head screws

Applications:

  • Mainsheet systems on spinnaker sheet on dinghies to 5m (16ft)
  • Spinnaker sheets on dinghies, sportsboats and small keel boats to 5m (16ft)
  • Halyard, vang and backstay applications on boats to 8m (26ft)
  • Control line applications on larger yachts

Materials:

  • Ball Bearings - High compression strength carbon black Acetal.
  • Stage 2 Bearing - Glass fibre reinforced, MoS2 impregnated Nylon
  • Frame/Cheeks - Toughened, glass fibre reinforced Nylon
  • Sheave - Carbon fiber reinforced, PTFE impregnated Nylon
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: 5663223634

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.9 ★★★★★
Based on 5 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
D
Verified Purchase
Daddy H
Chelsea, US
★★★★★ 5
great product
love it great product
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 12, 2026
E
Verified Purchase
Edgar L Harris
Chelsea, US
★★★★★ 5
Use
Extremely easy to use
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 10, 2026
J
Verified Purchase
J. Mullins
Birmingham, US
★★★★★ 5
Thank you VIVO
Color: Black, Size: Standard, Color: Black, Size: Standard
Between these cable management trays and the VIVO under desk UPS mount, I have completely tamed the cables at my desk. No more tangling my feet in cables when I stretch. No more messy, unkept appearance. Even with zip ties, I was never able to get anything close to this. It's truly amazing what the right hardware and a little bit of work can do. Everything you need is in the box. I do recommend drilling pilot holes, even in particle board or softer wood to make it easier to screw in, but the installation is dead simple and done right, no one will even know these trays are there. I should have done this years ago.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 23, 2025
J
Verified Purchase
j rector
Dallas, US
★★★★★ 5
Perfect Solution for Desk Cable Clutter!
Color: White, Size: Standard
I’m super happy with the VIVO 2-pack under-desk cable management trays. They’re exactly what I needed to keep my workspace clean and organized. The 17-inch size is perfect for holding power strips, chargers, and all those messy cords that usually clutter up my desk area. Installation was a breeze — the trays come with all the screws and clear instructions. I mounted them under my desk in just a few minutes, and they feel really sturdy and well-built. The metal construction looks sleek and durable, and it holds everything without any sagging or bending. Now my cables are off the floor and totally hidden, which not only looks great but also makes cleaning so much easier. If you’re tired of tangled cords and want a neat setup, these trays are a must-have! Highly recommend!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 14, 2025
S
Verified Purchase
Steven D
Natrona Heights, US
★★★★★ 5
Perfect cable management
Color: Black, Size: Standard
I set these up on my sit/stand office/gaming desk and trust me when I say I have a lot of cords, power blocks and what not going on. 2 27" monitors (both have DP and HDMI hooked up), two laptops, PS5, gaming speakers, iPad, docking station, phone charging station...and this thing holds all of the cables, blocks AND the Anker multi-plug with 12 outlets. No cords hanging, everything clean. Super easy to install, I totally recommend this product. I like it so much I bought another one for my girlfriend for her home office to get her all set up. You won't regret it
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 6, 2024

recommand products