Common faults and solutions for the SA87D112M4/4KW/86.15/M1/0 degree reducer

The common faults and solutions of SA87D112M4/4KW/86.15/M1/0 degree reducer are as follows:

oil leakage

Reason: Low coaxial accuracy between the reducer and the driving or driven device, resulting in oil seal and bearing wear; Damage to the sealing gasket and O-ring; Loose bolts on the joint surface; The lubricating oil has poor quality and contains a lot of impurities, which accelerates the wear of the oil seal; Excessive lubricating oil causes excessive stirring heat during operation, leading to oil leakage through the oil seal.

Solution: Strengthen the training of technical personnel, ensure coaxiality during installation and commissioning, and replace the skeleton oil seal for worn oil seals; Replace the sealing gasket and O-ring; Tighten bolts; Drain all lubricating oil, clean with gasoline as much as possible, and replace with high-quality lubricating oil and oil seals; Add fuel according to the manufacturer's oil label regulations and avoid excessive amounts.

The temperature rise of the reducer is too high

Reason: Poor quality of lubricating oil or grease; Poor lubrication of the shaft; The shaft bearing is damaged.

Solution: Follow the manufacturer's instructions to recommend the brand of lubricating oil or grease, and add it as required; Add lubricating oil according to regulations to ensure the normal operation of the lubricating oil pump and smooth oil circuit; Replace the bearings.

Abnormal noise and vibration during the operation of the gearbox

Reason: The large clearance between the installation shaft of the reducer and the bearing or between the gears causes wear and tear; When driving with a chain, the chain is too tight; Damaged gearbox components; The bearings at both ends of the transmission shaft are damaged or the shaft clearance is too large for serial movement; Loose foundation bolts of the reducer and loose connecting bolts of the reducer; Poor lubricating oil; Other foreign objects fell into the gearbox casing, causing damage to the gears and causing foreign objects to get stuck.

Solution: Adjust and replace the shaft, bearings, and gears; Adjust the tightness of the chain; Dismantling, inspection, and replacement; Adjust and update; Tighten the bolts and add lubricating oil; Replace the lubricating oil; Remove the foreign object and clean the gearbox.

Tooth peeling, pitting, chipping, and tooth breakage

Reason: Induced by defects or excessive harmful residual stresses, which may be local fractures caused by inclusions, micro grinding cracks, or inappropriate heat treatment; Possible material inclusions or issues with rough forging; Poor quenching and carburizing processes, or other reasons causing quality problems with the  itself.

Solution: Choose a gearbox produced by a legitimate manufacturer, track and record it, and promptly contact the manufacturer for maintenance if such problems occur.