18 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
J40SX18BTA 800 54.750 44.875 16.250 22.750 3.27 4.250 3.38
J40SX18BTB 1034 54.750 44.875 19.062 22.750 3.27 4.250 3.38
J40SX18BTC 1190 54.750 44.875 20.812 22.750 3.27 4.250 3.38
J40SX18RTA 800 54.750 44.875 16.250 22.750 3.27 4.250 3.38
J40SX18RTB 1034 54.750 44.875 19.062 22.750 3.27 4.250 3.38
J40SX18RTC 1190 54.750 44.875 20.812 22.750 3.27 4.250 3.38
J45SX18BTAa 800 54.750 44.875 16.250 22.750 3.27 4.250 3.38
J45SX18BTBa 1034 54.750 44.875 19.062 22.750 3.27 4.250 3.38
J45SX18BTCa 1190 54.750 44.875 20.812 22.750 3.27 4.250 3.38
J45SX18RTAa 800 54.750 44.875 16.250 22.750 3.27 4.250 3.38
J45SX18RTBa 1034 54.750 44.875 19.062 22.750 3.27 4.250 3.38
J45SX18RTCa 1190 54.750 44.875 20.812 22.750 3.27 4.250 3.38
J50SX18BTA 1248 59 47.375 17.375 22.750 4.63 6.13 4
J50SX18BTB 1474 59 47.375 19.562 22.750 4.63 6.13 4
J50SX18BTC 1637 59 47.375 21.312 22.750 4.63 6.13 4
J50SX18RTA 1248 59 47.375 17.375 22.750 4.63 6.13 4
J50SX18RTB 1474 59 47.375 19.562 22.750 4.63 6.13 4
J50SX18RTC 1637 59 47.375 21.312 22.750 4.63 6.13 4
J55SX18BTA 1248 59 47.375 17.375 22.750 4.63 6.13 4
J55SX18BTB 1474 59 47.375 19.562 22.750 4.63 6.13 4
J55SX18BTC 1637 59 47.375 21.312 22.750 4.63 6.13 4
J55SX18RTA 1248 59 47.375 17.375 22.750 4.63 6.13 4
J55SX18RTB 1474 59 47.375 19.562 22.750 4.63 6.13 4
J55SX18RTC 1637 59 47.375 21.312 22.750 4.63 6.13 4
J60SX18BTAb 1248 59 47.375 17.375 22.750 4.63 6.13 4
J60SX18BTBb 1474 59 47.375 19.562 22.750 4.63 6.13 4
J60SX18BTCb 1637 59 47.375 21.312 22.750 4.63 6.13 4
J60SX18RTAb 1248 59 47.375 17.375 22.750 4.63 6.13 4
J60SX18RTBb 1474 59 47.375 19.562 22.750 4.63 6.13 4
J60SX18RTCb 1637 59 47.375 21.312 22.750 4.63 6.13 4
J70SX18BTA 1398 59.250 47.375 22.187 22.750 4.36 6.250 4.5
J70SX18BTB 1623 59.250 47.375 24.437 22.750 4.36 6.250 4.5
J70SX18BTC 1787 59.250 47.375 26.187 22.750 4.36 6.250 4.5
J70SX18RTA 1398 59.250 47.375 22.187 22.750 4.36 6.250 4.5
J70SX18RTB 1623 59.250 47.375 24.437 22.750 4.36 6.250 4.5
J70SX18RTC 1787 59.250 47.375 26.187 22.750 4.36 6.250 4.5
J75SX18BTA 1562 63.625 51 22.187 22.750 4.750 7 4.750
J75SX18BTB 1787 63.625 51 24.437 22.750 4.750 7 4.750
J75SX18BTC 1965 63.625 51 26.187 22.750 4.750 7 4.750
J75SX18RTA 1562 63.625 51 22.187 22.750 4.750 7 4.750
J75SX18RTB 1787 63.625 51 24.437 22.750 4.750 7 4.750
J75SX18RTC 1965 63.625 51 26.187 22.750 4.750 7 4.750
J80SX18BTA 1562 63.625 51 22.187 22.750 4.750 6.75 4.750
J80SX18BTB 1787 63.625 51 24.437 22.750 4.750 6.75 4.750
J80SX18BTC 1965 63.625 51 26.187 22.750 4.750 6.75 4.750
J80SX18RTA 1562 63.625 51 22.187 22.750 4.750 6.75 4.750
J80SX18RTB 1787 63.625 51 24.437 22.750 4.750 6.75 4.750
J80SX18RTC 1965 63.625 51 26.187 22.750 4.750 6.75 4.750
J-90SX18BTA 1718 64.750 51.5 22.187 22.750 4.77 7.63 5.5
J-90SX18BTB 1943 64.750 51.5 24.437 22.750 4.77 7.63 5.5
J-90SX18BTC 2107 64.750 51.5 26.187 22.750 4.77 7.63 5.5
J-90SX18RTA 1718 64.750 51.5 22.187 22.750 4.77 7.63 5.5
J-90SX18RTB 1943 64.750 51.5 24.437 22.750 4.77 7.63 5.5
J-90SX18RTC 2107 64.750 51.5 26.187 22.750 4.77 7.63 5.5
J-100SX18BTA 1718 64.750 51.5 22.187 22.750 5.250 7.625 5.5
J-100SX18BTB 1943 64.750 51.5 24.437 22.750 5.250 7.625 5.5
J-100SX18BTC 2107 64.750 51.5 26.187 22.750 5.250 7.625 5.5
J-100SX18RTA 1718 64.750 51.5 22.187 22.750 5.250 7.625 5.5
J-100SX18RTB 1943 64.750 51.5 24.437 22.750 5.250 7.625 5.5
J-100SX18RTC 2107 64.750 51.5 26.187 22.750 5.250 7.625 5.5
J-115SX18BTA 2088 72.875 58 23.937 22.750 5.60 9.13 6
J-115SX18BTB 2313 72.875 58 26.062 22.750 5.60 9.13 6
J-115SX18BTC 2477 72.875 58 27.812 22.750 5.60 9.13 6
J-115SX18RTA 2088 72.875 58 23.937 22.750 5.60 9.13 6
J-115SX18RTB 2313 72.875 58 26.062 22.750 5.60 9.13 6
J-115SX18RTC 2477 72.875 58 27.812 22.750 5.60 9.13 6
J-125SX18BTA 2088 72.875 58 23.937 22.750 5.60 9.13 6
J-125SX18BTB 2313 72.875 58 26.062 22.750 5.60 9.13 6
J-125SX18BTC 2477 72.875 58 27.812 22.750 5.60 9.13 6
J-125SX18RTA 2088 72.875 58 23.937 22.750 5.60 9.13 6
J-125SX18RTB 2313 72.875 58 26.062 22.750 5.60 9.13 6
J-125SX18RTC 2477 72.875 58 27.812 22.750 5.60 9.13 6
J-130SX18BTA 2088 72.875 58 23.937 22.750 5.60 9.13 6
J-130SX18BTB 2313 72.875 58 26.062 22.750 5.60 9.13 6
J-130SX18BTC 2477 72.875 58 27.812 22.750 5.60 9.13 6
J-130SX18RTA 2088 72.875 58 23.937 22.750 5.60 9.13 6
J-130SX18RTB 2313 72.875 58 26.062 22.750 5.60 9.13 6
J-130SX18RTC 2477 72.875 58 27.812 22.750 5.60 9.13 6
J-140SX18BTA 2088 72.875 58 23.937 22.750 5.60 9.13 6
J-140SX18BTB 2313 72.875 58 26.062 22.750 5.60 9.13 6
J-140SX18BTC 2477 72.875 58 27.812 22.750 5.60 9.13 6
J-140SX18RTA 2088 72.875 58 23.937 22.750 5.60 9.13 6
J-140SX18RTB 2313 72.875 58 26.062 22.750 5.60 9.13 6
J-140SX18RTC 2477 72.875 58 27.812 22.750 5.60 9.13 6

*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