The effect of excessive grease on NACHI bearings

Source: China Bearing Network Time: 2014-06-14

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The effect of excessive grease on the NACHI bearing is known to play an important role in the use of grease in NACHI bearings; is the more grease the better the bearing? In fact, it is not; too much grease actually has many damages. Grease has good adhesion, wear resistance, temperature resistance, rust resistance and lubricity; can improve high temperature oxidation resistance; delay aging; Carbon; avoid the agglomeration of metal wear and oil; improve the wear resistance, pressure resistance and corrosion resistance of the machine. The more grease is filled; the greater the friction torque; the same filling amount; the friction torque of the sealed bearing Larger than open bearings. The grease filling amount is equivalent to 60% of the internal space volume of the NACHI bearing; the friction torque is no longer significantly increased. This is because most of the grease in the open bearing has been extruded; The grease in the bearing has also been lost. The addition of grease filling; NACHI bearing temperature rise straight forward; the same filling amount; the temperature rise of the sealed bearing is higher than the open bearing. Usually thought; seal Grease filling of rolling bearings; up to 50% of the internal space. The experiments of Shawki and Mokhtar are marked; the ball bearings are most suitable for 20% to 30%.

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