Home > Johnson Block Products > Crane Blocks > Shorty J-Crane Blocks > Six Sheave > 30 inch

30 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
J200SX30BTA 5721 92.500 77.125 25.437 35.750 9.01 10.13 6
J200SX30BTB 6620 92.500 77.125 26.437 35.750 9.01 10.13 6
J200SX30BTC 7200 92.500 77.125 28.437 35.750 9.01 10.13 6
J200SX30RTA 5721 92.500 77.125 25.437 35.750 9.01 10.13 6
J200SX30RTB 6620 92.500 77.125 26.437 35.750 9.01 10.13 6
J200SX30RTC 7200 92.500 77.125 28.437 35.750 9.01 10.13 6
J250SX30BTA 5721 102.500 82.500 27 35.250 8.52 12.81 8
J250SX30BTB 6620 102.500 82.500 28.250 35.250 8.52 12.81 8
J250SX30BTC 7200 102.500 82.500 30.250 35.250 8.52 12.81 8
J250SX30RTA 5721 102.500 82.500 27 35.250 8.52 12.81 8
J250SX30RTB 6620 102.500 82.500 28.250 35.250 8.52 12.81 8
J250SX30RTC 7200 102.500 82.500 30.250 35.250 8.52 12.81 8
J265SX30BTA 5721 102.500 82.500 27 35.250 8.52 12.81 8
J265SX30BTB 6620 102.500 82.500 28.250 35.250 8.52 12.81 8
J265SX30BTC 7200 102.500 82.500 30.250 35.250 8.52 12.81 8
J265SX30RTA 5721 102.500 82.500 27 35.250 8.52 12.81 8
J265SX30RTB 6620 102.500 82.500 28.250 35.250 8.52 12.81 8
J265SX30RTC 7200 102.500 82.500 30.250 35.250 8.52 12.81 8
J300SX30BTA 7260 104.375 85.250 28.437 36.500 9.13 12.73 9
J300SX30BTB 8140 104.375 85.250 29.562 36.500 9.13 12.73 9
J300SX30BTC 8710 104.375 85.250 31.562 36.500 9.13 12.73 9
J300SX30RTA 7260 104.375 85.250 28.437 36.500 9.13 12.73 9
J300SX30RTB 8140 104.375 85.250 29.562 36.500 9.13 12.73 9
J300SX30RTC 8710 104.375 85.250 31.562 36.500 9.13 12.73 9
J325SX30BTA 7260 104.375 85.250 28.437 36.500 9.13 12.73 9
J325SX30BTB 8140 104.375 85.250 29.562 36.500 9.13 12.73 9
J325SX30BTC 8710 104.375 85.250 31.562 36.500 9.13 12.73 9
J325SX30RTA 7260 104.375 85.250 28.437 36.500 9.13 12.73 9
J325SX30RTB 8140 104.375 85.250 29.562 36.500 9.13 12.73 9
J325SX30RTC 8710 104.375 85.250 31.562 36.500 9.13 12.73 9

*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