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Catalog provided courtesy of The Crosby Group, Inc.
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Western Blocks for Synthetic Fiber Rope
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Page 306
 
These blocks are built to carry the increased loads of synthetic fiber ropes.  All hooks are heat-treated alloy steel. Center pins are heat-treated.  You can now use a smaller size rope, and in turn, a smaller block, providing capacities which were previously not possible.
 

WITH  LOOSE  SWIVEL  HOOKS

     
N-411-R
SINGLE
S-412-B
DOUBLE
N-413-B
TRIPLE
Block
Size
(in.)
Fitting Single Sheave Double Sheave Triple Sheave
411 R
Stock No.
Painted
411 B
Stock No.
Painted
412 R
Stock No.
Painted
412 B
Stock No.
Painted
413 R
Stock No.
Painted
413 B
Stock No.
Painted
4 S 755007 755105 755203 755301 755409 755506
6 S 755025 755123 755221 755329 755427 755524
4 N 757005 757103 757201 757309 757407 757504
6 N 757023 757121 757229 757327 757425 757522

Bearing Code:  R — Roller; B — Self-Lubricating Bronze Bushed
For Reeving Information see page 294.

 

SEE APPLICATION AND WARNING INFORMATION

Para Español: www. thecrosbygroup.com On Pages 290-297

 

Block Size
(in.)
Sheave Size
(in.)
Synthetic Rope Size
(in.)
Working Load Limit *
(lbs.)
Working Load Limit *
(lbs.)
Weight Each
(lbs.)
Outside Diam. Rim
Thickness
Center Pin Diam. Single
With Hook
Double
With Hook
Triple
With Hook
Single
With Shackle
Double
With Shackle
Triple
With Shackle
Single Double Triple
4 2.25 .62 .38 1/2 2000 3000 3000 2000 3000 3000 3.00 4.00 6.00
6 3.50 1.00 .50 3/4 3000 4000 6000 4000 7000 8000 6.25 10.00 14.00

*Ultimate Load is 4 times the Working Load Limit

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