tailieunhanh - Rolling Bearing Damage 2009 Part 10

Tham khảo tài liệu 'rolling bearing damage 2009 part 10', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Other means of inspection at FAG Geometric measuring Roughness measurements down to one hundredth of a micrometer fig. 104 Inspection of form and position tolerances on form measuring systems FMS and coordinate measuring machines also for very irregularly formed construction parts such as cast steel housings fig. 105 Inspection of bearing clearances and radial runout of individual parts Peak To Valley US Rttt .985 US n K .4 c . _ Rpi . ĨÍ Ũ ijffl Ry us RĨ1 us Rt2 .908 us Rt3 US R .4 .832 us Rt5 us 104 Roughness measuring chart with characteristic values Lo ss Rp .548 US Rv - .884 us Rt us SLOPE .25. Dey .122 us Ry - . 160 us Rsk Rku Delq Deg lasq us 8 us Ss us R3z .684 us R3y .793 US 105 Coordinate measuring machine FAG I 62 Other means of inspection at FAG Geometric measuring Lubricant analyses and lubricant inspections FAG has laboratories and test floors for inspecting the quality and suitability of lubricants for rolling bearing applications. Laboratory analyses of lubricants from failed bearings frequently supply the decisive information necessary to clarify the cause of failure. The main inspection means are Amount and type of contamination present solid fig. 106a liquid humidity Use of anti-oxidants Ageing fig. 106b Change in viscosity Additive content reduction degrada-tion Oil-soap relation in greases Determination of type and class of lubricant . evidence of lubricant mixture during relubrication fig. 106b The extraction of a suitable lubricant sample is an essential prerequisite for reliable information based on the lubricant inspection see section . The origin of contaminants can almost always be determined from the results of their analyses. A direct indication of possible measures to stop wear for example can therefore be obtained just as conclusions regarding suitable oil change intervals or a fresh grease supply can be drawn from information on the general .