14 inch

Six-Sheave-J-Block

Key to six sheave J-Block Model Numbers

J 30 SX 14 B T A
Shorty “J” Crane Block Safe Working Limit-Tons

Number of Sheaves

SX = 6
Sextuple

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
J30SX14BTA 587 40.125 32.250 16.250 18 3.28 3.50 3
J30SX14BTB 768 40.125 32.250 20.187 18 3.28 3.50 3
J30SX14BTC 932 40.125 32.250 24.437 18 3.28 3.50 3
J30SX14RTA 587 40.125 32.250 16.250 18 3.28 3.50 3
J30SX14RTB 768 40.125 32.250 20.187 18 3.28 3.50 3
J30SX14RTC 932 40.125 32.250 24.437 18 3.28 3.50 3
J40SX14BTA 656 46.250 37.875 16.250 18 3.27 4.250 3.38
J40SX14BTB 836 46.250 37.875 20.187 18 3.27 4.250 3.38
J40SX14BTC 1000 46.250 37.875 24.437 18 3.27 4.250 3.38
J40SX14RTA 656 46.250 37.875 16.250 18 3.27 4.250 3.38
J40SX14RTB 836 46.250 37.875 20.187 18 3.27 4.250 3.38
J40SX14RTC 1000 46.250 37.875 24.437 18 3.27 4.250 3.38
J55SX14BTA 842 51.500 41.375 17.375 18 4.63 6.13 4
J55SX14BTB 1023 51.500 41.375 20.687 18 4.63 6.13 4
J55SX14BTC 1187 51.500 41.375 24.937 18 4.63 6.13 4
J55SX14RTA 842 51.500 41.375 17.375 18 4.63 6.13 4
J55SX14RTB 1023 51.500 41.375 20.687 18 4.63 6.13 4
J55SX14RTC 1187 51.500 41.375 24.937 18 4.63 6.13 4
J60SX14BTA 842 51.500 41.375 17.375 18 4.63 6.13 4
J60SX14BTB 1023 51.500 41.375 20.687 18 4.63 6.13 4
J60SX14BTC 1187 51.500 41.375 24.937 18 4.63 6.13 4
J60SX14RTA 842 51.500 41.375 17.375 18 4.63 6.13 4
J60SX14RTB 1023 51.500 41.375 20.687 18 4.63 6.13 4
J60SX14RTC 1187 51.500 41.375 24.937 18 4.63 6.13 4

*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