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Skookum R-4 Wide Throat Rigging Block - 5 Ton WLL

Skookum R-4 Wide Throat Rigging Block - 5 Ton WLL
SKU: SK-565303MPN: 565303
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  • This product is eligible for FREE SHIPPING.
  • USUALLY SHIPS: 1 - 2 Days
  • Made in the United States of America!

Product Description

Only the Skookum R Series offers both wide throat and Utili-Sheave. A wide throat makes it much easier to pull a variety of line, connecting links, or oversized line conditions. Wide manganese steel Utili-Sheaves work harder and last longer. These blocks are the choice of operators for heavy duty work. Built with no superfluous weight but a big reserve of strength and ruggedness. Equipped with long life Timken Bearings. Yokes and yoke pins are forged and heat-treated alloy steel. The block sides are the frame of the block--the unique shape fenders the rim of the sheave providing maximum protection from line jamming while minimizing weight which are both critical to performance.

  • A compact rigging block for loggers
  • Wide throat allows eyes and rigging to pass through
  • Very heavy-duty design with straight roller bearings to maximize space
  • Sheave made of Manganese for durability and long lifespan


Wire Rope Size
Sheave Size
Logging Blocks
WLL (tons)
WLL (lbs)
Safety Factor
Overall Height
Throat Opening
Weight (lbs)

Questions & Answers

2 Questions & 2 Answers
from Iron Mountain, MI asked:
May 23, 2019
Are these R-4 blocks made by the Ulven Company Skookum?
1 Answer
Yes indeed.  You will notice the word Skookum in the item name.  Their foundry is just about 30 minutes from our shop, been working with them for many years.
Submitted by: WRS on May 23, 2019

from Minneapolis asked:
April 26, 2019
Is this item in stock?
1 Answer
Yes, we currently do have some stock on hand, subject to prior sale.
Submitted by: WRS on April 26, 2019

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Safety Notice

WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Although Westech Rigging Supply strives to manufacture and sell the highest quality rigging and safety gear, use of the gear is dangerous if not used correctly by competent trained professionals. Westech Rigging Supply disclaims any liability resulting from the misuse of its rigging and safety gear. Please take a moment to more thoroughly review our disclaimer.

Westech Rigging Supply rigging and safety gear is only intended to be used by competent trained professionals. Misuse of the rigging and safety gear can result in serious injury up to and including loss of life. As such, Westech Rigging Supply disclaims liability for any misuse or incorrect product selection by our customers.

Rigging and safety gear purchased from Westech Rigging Supply should be used in strict accordance with all industry and OSHA standards. At no time should rigging or safety gear be used beyond its certified load ratings (aka Working Load Limits). Normal wear and tear should be expected with use of rigging and safety gear; therefore, all gear should be thoroughly inspected before each and every use. Worn or unsafe rigging and safety gear should never be used.