14 inch

Key to five sheave J-Block Model Numbers

J

25

QN

10

B

T

A

Shorty “J” Crane Block

Safe Working Limit-Tons

Number of Sheaves

QN=5
Quintuple

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	Thick-	Width	Throat Opening	Hook	Hook
		Length	Length	ness		w/ Latch	Thick.	Width
J-25QN14BTA	475	37.625	30.500	13.500	18	2.80	3.00	2.38
J-25QN14BTB	655	37.625	30.500	17.937	18	2.80	3.00	2.38
J-25QN14BTC	820	37.625	30.500	22.187	18	2.80	3.00	2.38
J-25QN14RTA	475	37.625	30.500	13.500	18	2.80	3.00	2.38
J-25QN14RTB	655	37.625	30.500	17.937	18	2.80	3.00	2.38
J-25QN14RTC	820	37.625	30.500	22.187	18	2.80	3.00	2.38
J-35QN14BTA	560	45.625	37.250	13.500	18	3.27	4.25	3.38
J-35QN14BTB	740	45.625	37.250	17.937	18	3.27	4.25	3.38
J-35QN14BTC	900	45.625	37.250	22.187	18	3.27	4.25	3.38
J-35QN14RTA	560	45.625	37.250	13.500	18	3.27	4.25	3.38
J-35QN14RTB	740	45.625	37.250	17.937	18	3.27	4.25	3.38
J-35QN14RTC	900	45.625	37.250	22.187	18	3.27	4.25	3.38
J-40QN14BTA	570	46.375	38	13.500	18	3.27	4.25	3.38
J-40QN14BTB	750	46.375	38	17.937	18	3.27	4.25	3.38
J-40QN14BTC	915	46.375	38	22.187	18	3.27	4.25	3.38
J-40QN14RTA	570	46.375	38	13.500	18	3.27	4.25	3.38
J-40QN14RTB	750	46.375	38	17.937	18	3.27	4.25	3.38
J-40QN14RTC	915	46.375	38	22.187	18	3.27	4.25	3.38
J-45QN14BTA	570	46.375	38	13.500	18	3.27	4.25	3.38
J-45QN14BTB	750	46.375	38	17.937	18	3.27	4.25	3.38
J-45QN14BTC	915	46.375	38	22.187	18	3.27	4.25	3.38
J-45QN14RTA	570	46.375	38	13.500	18	3.27	4.25	3.38
J-45QN14RTB	750	46.375	38	17.937	18	3.27	4.25	3.38
J-45QN14RTC	915	46.375	38	22.187	18	3.27	4.25	3.38
J-55QN14BTA	745	51.500	41.375	15.125	18	4.63	6.13	4.00
J-55QN14BTB	925	51.500	41.375	18.437	18	4.63	6.13	4.00
J-55QN14BTC	1090	51.500	41.375	22.687	18	4.63	6.13	4.00
J-55QN14RTA	745	51.500	41.375	15.125	18	4.63	6.13	4.00
J-55QN14RTB	925	51.500	41.375	18.437	18	4.63	6.13	4.00
J-55QN14RTC	1090	51.500	41.375	22.687	18	4.63	6.13	4.00

*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