EVALUATION OF THE SERVICE LIFE OF THE ROLLING BEARINGS OF THE DRIVE WHEEL SHAFT OF THE ONION PLANTER

The agronomic requirements of planting onions with a planter are largely determined by the work of the planting unit, which determines the uniformity of the distribution of the bulbs along the length of the planting furrow at the required distance from each other, which has a significant impact on the onion yield, as it affects the area of nutrition of the growing crop. In most onion planting machines in use, the planting units are usually driven by the drive wheels of the planting machine via chain drives and reduction gears. High-quality planting is only possible if the joints and parts of the drive function reliably. The design of a planting machine for seed onions developed and constructed at Penza Agrarian University is presented, which makes it possible to ensure the planting rate of seed onions in accordance with agrotechnical requirements. The design of the drive wheel of the onion planting machine with selected bearings and the estimation of their resource are considered and the required dynamic load capacity of the bearings is also determined, which has counted Cr(req) = 5441 N and is significantly below the catalog value Cr(cat) = 33200 N. The resource of the bearings installed on the drive wheel shaft is therefore provided with a reserve that significantly exceeds the normative service life of the planting machine.