ABB OmniCore IRB 6740 Product Manual

3 Screw dimensions of M8 or larger must be tightened with a torque wrench.Screw dimensions of M6 or smaller may be tightened without a torque wrenchif this is done by trained and qualified personnel.Article numberLubricant3HAC042472-001Molykote 1000 (molybdenum disulphide grease)3HAC070875-001Molykote P1900 (molybdenum disulphide grease)Tightening torqueBefore tightening any screw, note the following:• Determine whether a standard tightening torque or special torque is to beapplied. The standard torques are specified in the following tables. Anyspecial torques are specified in the repair, maintenance or installationprocedure descriptions. Any special torque specified overrides the standardtorque!• Use the correct tightening torque for each type of screw joint.• Only use correctly calibrated torque keys.• Always tighten the joint by hand, and never use pneumatic tools.• Use the correct tightening technique, that is do not jerk. Tighten the screwin a slow, flowing motion.• Maximum allowed total deviation from the specified value is 10%!Tightening torque for oil-lubricated screws with slotted or cross-recess head screwsThe following table specifies the recommended standard tightening torque foroil-lubricated screws with slotted or cross-recess head screws.NoteA special torque specified in the repair, maintenance or installation procedureoverrides the standard torque.Tightening torque for oil-lubricated screws with allen head screwsThe following table specifies the recommended standard tightening torque foroil-lubricated screws with allen head screws.NoteA special torque specified in the repair, maintenance or installation procedureoverrides the standard torque.Tightening torque (Nm)Class 12.9, oil-lubric-atedTightening torque (Nm)Class 10.9, oil-lubric-atedTightening torque (Nm)Class 8.8, oil-lubricatedDimension--6M5--10M6403424M8806747M10Continues on next pageProduct manual - IRB 6740 6493HAC085701-001 Revision: A© Copyright 2023 ABB. All rights reserved.9 Reference information9.4 Screw jointsContinued