14 inch

Single-Sheave-J-Block

Key to one sheave J-Block Model Numbers

J 3 S 10 B T A
Shorty “J” Crane Block Safe Working Limit-Tons

Number of Sheaves

Single

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 T U
Overall Net Thick- Throat Opening Hook Hook Deadend Hole
Length Length ness Width w/Latch Thick. Width Thick. Dia.
J-10S14BTA 180 34.750 28.50 6.187 18 1.91 2.625 1.937 1.12 1.40
J-10S14BTAB 275 34.750 28.50 7.562 18 1.91 2.625 1.937 1.12 1.40
J-10S14BTB 360 34.750 28.50 10.562 18 1.91 2.625 1.937 1.12 1.40
J-10S14BTC 530 34.750 28.50 14.812 18 1.91 2.625 1.937 1.12 1.40
J-10S14RTA 180 34.750 28.50 6.187 18 1.91 2.625 1.937 1.12 1.40
J-10S14RTAB 275 34.750 28.50 7.562 18 1.91 2.625 1.937 1.12 1.40
J-10S14RTB 360 34.750 28.50 10.562 18 1.91 2.625 1.937 1.12 1.40
J-10S14RTC 530 34.750 28.50 14.812 18 1.91 2.625 1.937 1.12 1.40
J-15S14BTA 170 36.625 28.50 6.437 18 1.91 2.625 1.937 1.37 1.65
J-15S14BTAB 270 36.625 28.50 7.562 18 1.91 2.625 1.937 1.37 1.65
J-15S14BTB 350 36.625 28.50 10.562 18 1.91 2.625 1.937 1.37 1.65
J-15S14BTC 515 36.625 28.50 14.812 18 1.91 2.625 1.937 1.37 1.65
J-15S14RTA 170 36.625 28.50 6.437 18 1.91 2.625 1.937 1.37 1.65
J-15S14RTAB 270 36.625 28.50 7.562 18 1.91 2.625 1.937 1.37 1.65
J-15S14RTB 350 36.625 28.50 10.562 18 1.91 2.625 1.937 1.37 1.65
J-15S14RTC 515 36.625 28.50 14.812 18 1.91 2.625 1.937 1.37 1.65
J-20S14BTA 240 42 32.75 6.687 18 2.80 3.750 3 1.37 1.65
J-20S14BTAB 340 42 32.75 8.062 18 2.80 3.750 3 1.37 1.65
J-20S14BTB 420 42 32.75 11.062 18 2.80 3.750 3 1.37 1.65
J-20S14BTC 585 42 32.75 15.312 18 2.80 3.750 3 1.37 1.65
J-20S14RTA 240 42 32.75 6.687 18 2.80 3.750 3 1.37 1.65
J-20S14RTAB 340 42 32.75 8.062 18 2.80 3.750 3 1.37 1.65
J-20S14RTB 420 42 32.75 11.062 18 2.80 3.750 3 1.37 1.65
J-20S14RTC 585 42 32.75 15.312 18 2.80 3.750 3 1.37 1.65
J-25S14BTA 240 42 32.75 6.687 18 2.80 3.750 3 1.37 1.65
J-25S14BTAB 340 42 32.75 8.062 18 2.80 3.750 3 1.37 1.65
J-25S14BTB 420 42 32.75 11.062 18 2.80 3.750 3 1.37 1.65
J-25S14BTC 585 42 32.75 15.312 18 2.80 3.750 3 1.37 1.65
J-25S14RTA 240 42 32.75 6.687 18 2.80 3.750 3 1.37 1.65
J-25S14RTAB 340 42 32.75 8.062 18 2.80 3.750 3 1.37 1.65
J-25S14RTB 420 42 32.75 11.062 18 2.80 3.750 3 1.37 1.65
J-25S14RTC 585 42 32.75 15.312 18 2.80 3.750 3 1.37 1.65

*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