KOYO bearing grease the normal use of the color is brown and blue. If a yellow, indicates that oil mixed with diesel oil or water, should change in time. If in deep black, indicates that the oil has degenerative, must change in time.

Will investigate the oil and stir in the white paper after drops (had better be filter paper), forming staining, from center to outside after staining about 2 ~ 3 hours of gradually spread, form three concentric rings. According to the three areas of color, size and shape can distinguish the oil state.

From the oil out of the oil a little low shell, besmear in the finger, with fingers and thumb twisting mill. If feel oil impurity, like water or no sticky feeling, even send astringent or a crisp acidity, oil has been bad. If after twisting mill in finger can see on small shiny metal grinding, show the engine exists serious worn parts, also explain the oil must be replaced immediately.

1, from KOYO bearing size judgment
First need emphasizes KOYO bearing size accuracy, the rotation precision, internal clearance and cooperate with noodles, groove surface, keep frame and seals and other aspects of judgment. And then to check the results can be used to bearing by word or proficient at the bearing judgement.

2, KOYO bearing whether or not to use standard
The judge whether the standard of use KOYO bearing according to its mechanical properties and important degree examination cycle and a concrete analysis, etc. If appear bearing parts of the fracture and defects and groove surface of two things rolling stripping phenomenon, it shall not be to use bearing, must be replaced.
Use KOYO import bearings process, in order to be able to make it to give full play to keep for a long time and the performance of their due, should be prepared to regular maintenance measures. Through the following the appropriate cleaning can order measures, improve the efficiency in the use of bearing.

3, KOYO bearing the cleaning method
First will KOYO bearing tear open next come in check, and do the appearance record. In addition, to make sure the amount of residual lubricant and lubricant sampling, and then clean bearing. Usually, the clear import bearings use KOYO for neutral no water diesel or kerosene, according to need to sometimes use temperature of the lye, etc. No matter use which kinds of cleaning agents, want to often filtering keeps clean. Cleaning good NTN bearing, need to immediately oily-type rust coating or fat.




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