How to deal with overheating of cylindrical roller bearings

In the actual application of cylindrical roller bearings, often encounter the problem of bearing heat, how do you need to deal with it?

First of all, we need to understand the causes of the column roller bearing fever.

Cylindrical roller bearings in the work of more than normal temperature may have the following reasons:

1, bearing and journal fit uneven or contact surface is too small (with too small clearance), the unit area of the specific pressure is too large, most of this situation occurs in the new machine test run or after the new shaft tile.

2, bearing deflection or crankshaft bending, twisting.

3, the quality of the shaft tile is not good, the quality of the lubricant does not match (small viscosity), or the oil circuit is blocked. Gear oil pump oil supply pressure is too low, as well as oil supply interruption, resulting in shaft tile oil shortage, dry friction.

4、The bearing has debris or too much lubricant, too dirty.

5、The shaft tile has uneven excessive wear.

6, compressor installation spindle and motor (or diesel engine) spindle coupling did not find the right, the error is too large, resulting in two shaft tilt.

After understanding the causes of bearing heating, we can prescribe the right remedy.

Exclusion methods:

1, with the colour method scraping shaft tile, so that its contact surface to meet the requirements, improve the unit area of the specific pressure.

2, appropriate adjustment of its fit clearance, check the crankshaft bending, distortion, depending on the situation for a new crankshaft or repair.

3, with the quality of the shaft tile, check the oil pipeline and gear oil pump, use the quality of the required lubricant, check and adjust the oil pump to make the pressure meet the requirements.

4、Clean and replace the new oil, adjust the oil pressure.

5、Replace new shaft tiles.

6、The concentricity of the two machines should be positive, leveling tolerance value should be in line with the value specified in the machine manual. In particular, the compressor and motor coupling with rigid coupling, more attention should be paid to find the right.