The correct use of bearings can increase the life of bearings and improve the running efficiency of the machine. Therefore, we need to pay great attention to the following matters needing attention.

A. Riveting parts of harvester such as moving knife assembly, rivets are generally made of cold extrusion, should not be heated during riveting, such as heating will reduce the material strength.After riveting, the forming punch is used to strengthen the firmness of the blade and cutter bar.

B. vulnerable parts, especially pin shaft, pressure sheet, sleeve, pad in the maintenance can not be replaced by more butter replacement and repair, such as long time use wear to the limit of parts will cause other mechanical life is short.

C.no balancing machine shaft repair in the repair of all kinds of shafts to balance, can be installed at one end of the shaft a thrust bearing, clamping on the lathe three claws, the other end can be supported by the top, such as the lathe short, can be used to clamp the other end of the SKF bearing mounted on the shaft, balance correction.But in the counterweight, tighten with screws, try not to use electric welding counterweight.

D.In maintenance, because of the various types of bearing materials, it is not easy to purchase. At present, the used shafts in China are mainly based on 45# carbon steel.

E. When processing sleeve parts, pull the oil groove in the sleeve hole as far as possible because it is very difficult to refuel some parts of the harvester. Where it is difficult to refuel, butter and heavy oil can be used, except the nylon sleeve.Where the parts of the nylon sleeve are used, it is best not to use cast iron, copper, aluminum instead, because the nylon sleeve bears a certain impact and does not deform.

F.key and keyway on the shaft, pulley, and repair shall ensure that the size is not in advance, could not increase the size of the key, otherwise it will affect the strength of the shaft, shaft keyway available welding filler repair welding in the opposite direction to the old key a keyway milling, pulley keyway on the set of available (transition fit), with good after use countersunk screw tapping to tighten the plug button in the set of seam.

G. the maintenance of the hydraulic part of the harvester unload the distributor and flow reduction valve, etc., with the air pump to the pressure of the pipe fittings, the hydraulic oil should be filtered and exhaust when the second load, the assembly of hydraulic maintenance is mainly seals, and the seals had better be replaced after unloading.