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16 inch

shorty-j-6

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
J40SX16BTA 764 48.625 40.125 16.250 20.125 3.27 4.250 3.38
J40SX16BTB 919 48.625 40.125 19.187 20.125 3.27 4.250 3.38
J40SX16BTC 1065 48.625 40.125 21.687 20.125 3.27 4.250 3.38
J40SX16RTA 764 48.625 40.125 16.250 20.125 3.27 4.250 3.38
J40SX16RTB 919 48.625 40.125 19.187 20.125 3.27 4.250 3.38
J40SX16RTC 1065 48.625 40.125 21.687 20.125 3.27 4.250 3.38
J45SX16BTA 764 48.625 40.125 16.250 20.125 3.27 4.250 3.38
J45SX16BTB 919 48.625 40.125 19.187 20.125 3.27 4.250 3.38
J45SX16BTC 1065 48.625 40.125 21.687 20.125 3.27 4.250 3.38
J45SX16RTA 764 48.625 40.125 16.250 20.125 3.27 4.250 3.38
J45SX16RTB 919 48.625 40.125 19.187 20.125 3.27 4.250 3.38
J45SX16RTC 1065 48.625 40.125 21.687 20.125 3.27 4.250 3.38
J55SX16BTA 952 53.875 43.625 17.375 20.125 4.63 6.13 4
J55SX16BTB 1113 53.875 43.625 19.687 20.125 4.63 6.13 4
J55SX16BTC 1259 53.875 43.625 22.187 20.125 4.63 6.13 4
J55SX16RTA 952 53.875 43.625 17.375 20.125 4.63 6.13 4
J55SX16RTB 1113 53.875 43.625 19.687 20.125 4.63 6.13 4
J55SX16RTC 1259 53.875 43.625 22.187 20.125 4.63 6.13 4
J70SX16BTA 988 58.250 46.375 22.187 20.125 4.36 6.250 4.500
J70SX16BTB 1149 58.250 46.375 24.437 20.125 4.36 6.250 4.500
J70SX16BTC 1295 58.250 46.375 26.187 20.125 4.36 6.250 4.500
J70SX16RTA 988 58.250 46.375 22.187 20.125 4.36 6.250 4.500
J70SX16RTB 1149 58.250 46.375 24.437 20.125 4.36 6.250 4.500
J70SX16RTC 1295 58.250 46.375 26.187 20.125 4.36 6.250 4.500
J80SX16BTA 1241 61.875 49.625 22.187 20.125 4.750 6.75 4.750
J80SX16BTB 1401 61.875 49.625 24.562 20.125 4.750 6.75 4.750
J80SX16BTC 1547 61.875 49.625 27.062 20.125 4.750 6.75 4.750
J80SX16RTA 1241 61.875 49.625 22.187 20.125 4.750 6.75 4.750
J80SX16RTB 1401 61.875 49.625 24.562 20.125 4.750 6.75 4.750
J80SX16RTC 1547 61.875 49.625 27.062 20.125 4.750 6.75 4.750

*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