Proper Technical Maintenance of Combine Harvester Rolling Bearings for Smooth and Continuous Performance for Grain Crop Agrotechnical Requirements

The threshing mechanism is the main component of combine harvester on which grain separation and cleaning qualitative work indicators depend. It important to ensure that all components, including drum bearings other combine, are working properly reliably. There many places in where it not possible measure bearing vibrations directly without dismounting them, since there no suitable spot mount a sensor. paper investigates rolling condition combines, difficult access, by using vibration diagnostics technique utilizing newly manufactured steel bracket. measurements analysis were conducted Adash A4900 Vibrio M analyzer (Adash spol. s.r.o., Ostrava, Czech Republic). source measurement was based fast Fourier transform (FFT) spectrum analysis. Analysis experimental results showed average squared velocity values (in frequency interval 10–1000 Hz), together with measured parameters, can be used for drum‘s evaluation.