... ABEC-1 b. P6 ABEC-3 c. P5 ABEC-5 d. P4 e. P22.Noise Levels: a. Z1V1 b. Z2V2 ... Excavator, Dozer, Paver, Loader, Hoisting machinery, Piling soil machinery d. Steel mill machinery, Oil field machinery, Motorship machinery e. Hardware ... Pump, Water pump, Submersible pump, Sewage pump h. Motor bearings, Generator, Hydroelectric generator i. Machinetool, Special purpose grinder, Precision lathe j. Printing ...