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24 inch

shorty-j-5

Key to five sheave J-Block Model Numbers

J 25 QN 10 B T A
Shorty “J” Crane Block Safe Working Limit-Tons

Number of Sheaves

QN=5
Quintuple

Sheave Size – Nom. O.D.

Sheave Bearing:

B = Bronze Bushed
R= Roller Bearing

 Hook-Thrust Bearing

Cheek Weights:
A = No wts.
AB = Med. wts.
B = Std. wts.
C = X-Heavy wts.


Model WT. A B E F H J K
Overall Net Thickness Throat


Opening

 Hook Hook
Length Length Width w/Latch Thick. Width
J-200QN24BTA 4796 87 71 25.437 28.750 9.01 10.13 6
J-200QN24BTB 5501 87 71 31.187 28.750 9.01 10.13 6
J-200QN24BTC 5963 87 71 37.687 28.750 9.01 10.13 6
J-200QN24RTA 4796 87 71 25.437 28.750 9.01 10.13 6
J-200QN24RTB 5501 87 71 31.187 28.750 9.01 10.13 6
J-200QN24RTC 5963 87 71 37.687 28.750 9.01 10.13 6

*Gunnebo Johnson Design Factor is 4 to 1, with some exceptions;

45 Ton models 3.6 to 1

60 Ton models 3.7 to 1

325 Ton models 3.7 to 1