Fayat Group BOMAG BW 226 DH-4, Service Manual, Page: 30 / 51

1.4
Tightening torques
BOMAG 30 008 916 89
1.4 Tightening torques
The values specified in the table apply for screws:
l
black oiled
l
with surface protection A4C
l
with surface protection DACROMET
i
Note
DACROMET is a surface protection that mainly consists of zinc and aluminium in a chromium oxide matrix. DAC-
ROMETIZATION provides excellent corrosion protection for metal surfaces by applying a mineral coating with
metallic-silver appearance.
Tightening torques for screws with metric unified thread
*
* Coefficient of friction
μ
tot. = 0,14
Screw dimension
Tightening torques Nm
8.8 10.9 12.9
M4 3 5 5
M5 6 9 10
M6 10 15 18
M8 25 35 45
M10 50 75 83
M12 88 123 147
M14 137 196 235
M16 211 300 358
M18 290 412 490
M20 412 578 696
M22 560 785 942
M24 711 1000 1200
M27 1050 1480 1774
M30 1420 2010 2400
Tightening torques for screws with metric unified fine thread
*
* Coefficient of friction
μ
tot. = 0,14
Screw dimension
Tightening torques Nm
8.8 10.9 12.9
M8 x 1 26 37 48
M10 x 1.25 52 76 88
M12 x 1,25 98 137 126
M12 x 1.5 93 127 152
M14 x 1.5 152 216 255
M16 x 1.5 225 318 383
M18 x 1.5 324 466 554
M20 x 1.5 461 628 775
M22 x 1.5 618 863 1058
M24 x 2 780 1098 1294
M27 x2 1147 1578 1920
M30 x 2 1568 2254 2695