MANUAL DE SERVICIO DE LA NBT40
Designación de serie,
roscas por pulgadas y
tamaño nominal
M18x1.5
M20x1
M20x1.5
M22x1.5
M24x2
M27x2
M30x1.5
M30x2
M33x2
M36x2
National Crane
Categoría de
propiedades
Máximo
8.8
276.6
10.9
394.0
12.9
461.1
8.8
405.7
10.9
577.8
12.9
676.1
8.8
386.0
10.9
549.7
12.9
643.3
8.8
520.8
10.9
741.7
12.9
868.0
8.8
655.8
10.9
934.0
12.9
1092.9
8.8
951.4
10.9
1355.0
12.9
1585.6
8.8
1369.2
10.9
1950.0
12.9
2281.9
8.8
1324.6
10.9
1886.6
12.9
2207.7
8.8
1784.5
10.9
2541.6
12.9
2974.2
8.8
2340.1
10.9
3332.8
12.9
3900.2
Published 7-01-2021, Control # 287-13
Par de apriete (Nm)
Nominal
Mínimo
269.7
262.8
384.2
374.3
449.6
438.0
395.5
385.4
563.3
548.9
659.2
642.3
376.3
366.7
535.9
522.2
627.2
611.1
507.8
494.8
723.2
704.7
846.3
824.6
639.4
623.0
910.6
887.3
1065.6
1038.3
927.6
903.8
1321.1
1287.2
1546.0
1506.3
1334.9
1300.7
1901.3
1852.5
2224.9
2167.8
1291.5
1258.4
1839.4
1792.2
2152.5
2097.3
1739.9
1695.3
2478.0
2414.5
2899.8
2825.4
2281.6
2223.1
3249.5
3166.2
3802.6
3705.1
INTRODUCCIÓN
1
10
1-13