Installation and Commissioning

RepairsGeneral Description1.4 Instructions for tightening screw jointsGeneralIt is extremely important that all screw joints are tightened using the correct torque.ApplicationThe following tightening torques must be used, unless otherwise specified in the text,for all screw joints made of metallic materials.The instructions do not apply to screw joints made of soft or brittle materials.For screws with a property class higher than 8.8, the same specifications as for class8.8. are applicable, unless otherwise stated.Screws treated with GleitmoAll screws in the manipulator that are tightened to a specified torque are treated withGleitmo.When handling screws treated with Gleitmo, protective gloves of nitrile rubbertype should be used.Screws treated with Gleitmo can be unscrewed and screwed in again 3-4 times beforethe slip coating disappears. Screws can also be treated with Molycote 1000.When screwing in new screws without Gleitmo, these should first be lubricated withMolycote 1000 and then tightened to the specified torque.AssemblyScrew threads sized M8 or larger should preferably be lubricated with oil. Molycote1000 should only be used when specified in the text.Screws sized M8 or larger should be tightened with a torque wrench, if possible.Screws sized M6 or smaller may be tightened to the correct torque by personnel withsufficient mechanical training, without using torque measurement tools.Product Manual IRB 1400 9