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CMI 4" Heavy-Duty Rope Pulley - 5/8" Rope - #RP123NFPA

CMI 4" Heavy-Duty Rope Pulley - 5/8" Rope - #RP123NFPA
  • USUALLY SHIPS: 1 - 2 Days
  • Made in the United States of America!
Purchase over $300 of CMI products and use Promo Code: CMI10 to receive a 10% discount off your order total! *Restrictions may apply

Product Description

  • Stainless sideplates
  • Aluminum sheave
  • Bearing
  • Stainless axle
  • Rated to NFPA standards
  • 94.6% efficiency


8" x 4.75"
Frame Size
Rope Size
Sheave Size
Single Sheave
Stainless Steel / Aluminum
Breaking Strength (lbs)
Weight (lbs)

Questions & Answers

1 Question & 1 Answer
Edwin Lee Bean
from McComb, MS asked:
May 1, 2019
I need to lift approximately 2,000 lbs.  Which pulleys do you recommend to make a block and tackle?

1 Answer
The Fiddle Block Sets are especially popular because they come ready to use off the shelf and they have cleats to capture progress and hold your load in position.

Standard Fiddle Block Set

Deluxe Fiddle Block Set

We also have some mechanical advantage kits that come only with pulleys and carabiners, and you provide your own rope.  You would likely want to incorporate your own progress capture device, such as a Prusik.

4:1 Kit w/ 2" Pulleys

4:1 Kit w/ 4" Pulleys

Submitted by: WRS on May 1, 2019

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