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MOTOX gearbox - DS TECH

MOTOX gearbox - DS TECH

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Service and maintenance8.8 Checking tightness of fastening bolts8.8 Checking tightness of fastening boltsATEX version <strong>gearbox</strong>esLoose parts can cause sparks through impact.Entry of foreign bodies can cause sparks.NoteReplace damaged headless screws with new screws of the same type and strength class.Switch off the power to the drive unit and use a torque wrench to check the seating of allfastening bolts.The general tolerance for the tightening torque in Nm is 10 %. The friction coefficient is0.14 μ.Table 8- 5Thread sizeTightening torques for fastening boltsTightening torque at strength class8.8 10.9 12.9[Nm] [Nm] [Nm]M4 3 4 5M5 6 9 10M6 10 15 18M8 25 35 41M10 50 70 85M12 90 120 145M16 210 295 355M20 450 580 690M24 750 1 000 1 200M30 1 500 2 000 2 400M36 2 500 3 600 4 200BA 2010Operating Instructions, 05/2011 75

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