4 Repair4.2.1. Mounting instructions for bearings3HAC030005-001 Revision: -110© Copyright 2006 ABB. All rights reserved.4.2 General procedures4.2.1. Mounting instructions for bearingsGeneralThis section details how to mount and grease different types of bearings on the robot.EquipmentAssembly of all bearingsFollow the instructions below when mounting a bearing on the robot.Assembly of tapered bearingsFollow the previous instructions for assembly of all bearings, when mounting a taperedbearing on the robot.In addition to those instructions, the procedure below must be carried out to enable the rollerelements to adjust to the correct position against the race flange.Equipment, etc. Art. no. NoteGrease Oil and Grease spec-ification on page 199.Action Note1. To avoid contamination, let a new bearing remain in its wrappinguntil it is time for fitting.2. Ensure that all parts included in the bearing fitting are free fromburrs, grinding waste and other contamination. Cast componentsmust be free from foundry sand.3. Bearing rings, inner rings and roller elements must under no cir-cumstances be subjected to direct impact. Furthermore, the rollerelements must not be exposed to any stresses during the assemblywork.Action Note1. Tension the bearing gradually until the recommended pre-tensionis achieved.NOTE!The roller elements must be rotated at a specified number of turnsbefore pre-tensioning is carried out and also rotated during the pre-tensioning sequence.2. Make sure the bearing is properly aligned, as this will directly affectthe lifespan of the bearing.Continues on next page
