as mentioned above in the prior art there has sometimes been a lack of lubricant at sliding surfaces such as the bearings 40 36 and 32 this often occurs at initial run in or start up of the compressor fig2 shows a shaft 28 in which a ptfe spray shown schematically by box 51 is sprayed onto surfaces 34 38 and 42 the shaft 28 can now be mounted within the motor the shell sealed and the compressor charged with refrigerant at initial start up of the compressor the ptfe coated shaft will provide lubricant the sprayed locations 34 38 and 42 corresponding to the locations of the bearings 40 36 and 32 as shown in fig3 a 3c on the other hand the spray material could be sprayed on the bearing locations 40 36 and 32 however it may be simpler to spray the self lubricating material onto the shaft as shown in fig2 the spray coating can be applied in a very thin layer and may be less than 50 micrometers and preferably between 5 and 10 micrometers such thicknesses are sufficient to fill up any microscopic grooves on the shaft surface any wear during run in to accommodate misalignment will occur in parallel with the removal of the sprayed layer but while the sprayed layer.