BSL Strautmann Sherpa 1201, Translation Of The Original Operating Instructions

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Service and maintenance of machine
110 Sherpa 1201 / 1401
8.28 Tightening torques for screwed connections
These tightening torques are reference values. Differing data
specified elsewhere in the operating instructions or the included sub-
supplier documentation shall always prevail!
Grade and marking of screw
heads
Grade and marking of nuts
Size Grade 4.8 Grade 8.8 Grade 10.9 Grade 12.9
lubricated* dry ** lubricated* dry ** lubricated* dry ** lubricated* dry **
Nm lb·ft Nm lb·ft Nm lb·ft Nm lb·ft Nm lb·ft Nm lb·ft Nm lb·ft Nm lb·ft
M6 4.8 3.5 6 4.5 9 6.5 11 8.5 13 9.5 17 12 15 11.5 19 14.5
M8 12 8.5 15 11 22 16 28 20 32 24 40 30 37 28 47 35
M10 23 17 29 21 43 32 55 40 63 47 80 60 75 55 95 70
M12 40 29 50 37 75 55 95 70 110 80 140 105 130 95 165 120
M14 63 47 80 60 120 88 150 110 175 130 225 165 205 150 260 190
M16 100 73 125 92 190 140 240 175 275 200 350 255 320 240 400 300
M18 135 100 175 125 260 195 330 250 375 275 475 350 440 325 560 410
M20 190 140 240 180 375 275 475 350 530 400 675 500 625 460 800 580
M22 260 190 330 250 510 375 650 475 725 540 925 675 850 625 1075 800
M24 330 250 425 310 650 475 825 600 925 675 1150 850 1075 800 1350 1000
M27 490 360 625 450 950 700 1200 875 1350 1000 1700 1250 1600 1150 2000 1500
M30 675 490 850 625 1300 950 1650 1200 1850 1350 2300 1700 2150 1600 2700 2000
M33 900 675 1150 850 1750 1300 2200 1650 2500 1850 3150 2350 2900 2150 3700 2750
M36 1150 850 1450 1075 2250 1650 2850 2100 3200 2350 4050 3000 3750 2750 4750 3500
*
"Lubricated“ means that the screws are treated with a lubricant such as e.g. engine oil, or that
phosphatized or oiled screws are used.
** "Dry" means that normal or galvanized screws without any lubrication are used.