To ensure the stable operation, long service life and high efficiency of the SSLG15×80 double roller crusher (feed/grain dedicated), regular maintenance and proper care are essential. The following maintenance guidelines are practical and easy to operate, suitable for daily use in feed mills, breweries and grain processing plants.
Daily maintenance should be carried out before and after each shift. First, check the belt tension: the standard is that the deflection is 10–15 mm when pressing the middle of the belt, which can avoid slipping, low capacity, overheating caused by loose belts, and motor burnout or bearing damage caused by over-tight belts. Second, clean the inside and outside of the equipment, remove grain residues, dust and debris in the crushing chamber, and keep the motor, bearings and machine body clean to prevent overheating. In addition, check for abnormal noise and vibration during operation; if impact sound, severe vibration or friction occurs, stop the machine immediately to check whether the rollers, bearings and bolts are loose. Finally, observe the wear of the roller surface to avoid uneven particle size caused by grooves on the roller surface.
Regular maintenance should be performed every 15–30 days. It is necessary to add high-temperature lithium-based grease to the roller bearings every 200 working hours, and the filling amount should be 2/3 of the bearing cavity to avoid overfilling. At the same time, tighten all bolts, including bearing seat bolts, roller fixing bolts and motor base bolts, to prevent parts damage caused by strong vibration due to loose bolts. In addition, calibrate the roller gap to ensure uniform left and right gaps and meet the required discharge particle size, and check the spring pressure to ensure that the spring maintains proper elasticity, so as to avoid poor crushing effect and excessive particle size caused by weak springs.
Monthly or quarterly maintenance mainly includes replacing worn rollers, cleaning the bearing interior, checking motor insulation and wiring, and lubricating the adjustment mechanism. When the roller wear exceeds 5–8 mm, it should be repaired or replaced in time to avoid vibration and unstable particle size caused by uneven wear. Clean the bearings with diesel or kerosene and replace the grease completely; check the motor insulation and wiring to ensure safe electrical connection without loose, burnt or aging wires; lubricate the screw rods, wedge blocks and sliding rails to keep the adjustment mechanism flexible.
In addition, abiding by the key operating rules is also an important part of maintenance: it is strictly prohibited to feed iron, stones and other hard foreign objects to avoid damaging the roller surface and bearings; do not overload the equipment, avoid excessive and rapid feeding at one time; ensure uniform feeding to extend the service life of the rollers and ensure stable discharge particle size; do not run the machine empty for a long time to avoid accelerating wear and wasting energy. For common faults such as uneven discharge size, low capacity, severe vibration and bearing overheating, corresponding solutions can be taken: adjust the roller gap or replace worn rollers, tighten the belt or check the motor speed, tighten bolts or align the rollers, add grease or replace damaged bearings.