24 inch

Seven-Sheave-J-Block

Key to seven sheave J-Block Model Numbers

J

250

SV

24

B

T

A

Shorty “J” Crane Block

Safe Working Limit-Tons

Number of Sheaves

SV = 7
Seven

Sheave Size – Nom. O.D.

Sheave Bearing:

B = Bronze Bushed
R= Roller Bearing

Hook-Thrust Bearing

Cheek Weights:
A = No 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-250SV24BTA	5575	95.375	76.250	30.781	28.750	8.52	12.81	8
J-250SV24BTB	6279	95.375	76.250	36.750	28.750	8.52	12.81	8
J-250SV24BTC	6742	95.375	76.250	43.250	28.750	8.52	12.81	8
J-250SV24RTA	5575	95.375	76.250	30.781	28.750	8.52	12.81	8
J-250SV24RTB	6279	95.375	76.250	36.750	28.750	8.52	12.81	8
J-250SV24RTC	6742	95.375	76.250	43.250	28.750	8.52	12.81	8
J-265SV24BTA	5575	95.375	76.250	30.781	28.750	8.52	12.81	8
J-265SV24BTB	6279	95.375	76.250	36.750	28.750	8.52	12.81	8
J-265SV24BTC	6742	95.375	76.250	43.250	28.750	8.52	12.81	8
J-265SV24RTA	5575	95.375	76.250	30.781	28.750	8.52	12.81	8
J-265SV24RTB	6279	95.375	76.250	36.750	28.750	8.52	12.81	8
J-265SV24RTC	6742	95.375	76.250	43.250	28.750	8.52	12.81	8
J-300SV24BTA	6445	95.250	76.750	32.937	28.750	9.13	12.73	9
J-300SV24BTB	7149	95.250	76.750	38.875	28.750	9.13	12.73	9
J-300SV24BTC	7612	95.250	76.750	45.375	28.750	9.13	12.73	9
J-300SV24RTA	6445	95.250	76.750	32.937	28.750	9.13	12.73	9
J-300SV24RTB	7149	95.250	76.750	38.875	28.750	9.13	12.73	9
J-300SV24RTC	7612	95.250	76.750	45.375	28.750	9.13	12.73	9
J-325SV24BTA	6445	95.250	76.750	32.937	28.750	9.13	12.73	9
J-325SV24BTB	7149	95.250	76.750	38.875	28.750	9.13	12.73	9
J-325SV24BTC	7612	95.250	76.750	45.375	28.750	9.13	12.73	9
J-325SV24RTA	6445	95.250	76.750	32.937	28.750	9.13	12.73	9
J-325SV24RTB	7149	95.250	76.750	38.875	28.750	9.13	12.73	9
J-325SV24RTC	7612	95.250	76.750	45.375	28.750	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