Precautions for grease using on spherical roller bearings

Spherical roller bearings in the process of using lubrication is an important part, so many people think that the more grease the bearings as possible
In fact, grease filling volume can refer to the following principles: (a) general bearing grease should be filled in order to install the bearing cavity 1/2-3/4 entire space can; (2) the level of the bearing cavity filled Space 2/3-3/4; (3) vertically mounted bearing space filled cavity 1/2 (upper side), 3/4 (the lower side); (4) is easily polluted environment, the speed or medium-speed bearings, bearings and bearing boxes should fill the entire space; (5) should be preceded by high speed bearing grease in the bearings mounted on the quality lubricants, in general, is loaded with grease base oil immersion what to avoid during startup due to friction caused by inadequate bearing surface grease burn.

Spherical roller bearing grease is usually apparent viscosity or viscosity similar to that in the description of the viscosity of the grease, you must specify the temperature and shear rate. Similar indicators can be used to control the viscosity of low temperature fluidity and pumpability. Measure of self-aligning roller bearing grease temperature performance is one of the important indicators of low torque, ie at low temperatures (-20 ° c less) rotation of the bearing grease blocking low degree of liquidity, low torque grease from the start 60mm rear torque and rotational torque mean value. Spherical roller bearing grease evaporation (degrees) that grease in the long-term use under high temperature conditions, the extent of volatile oil grease, the smaller the better evaporation. Grease lubricant evaporation depends on the nature and composition of fractions. Oxidation stability is in long-term storage or long-term grease when used under high heat resistance and oxygen role in maintaining a permanent change in the nature of capacity does not occur. Due to oxidation, reduction or tend to occur free alkali content of free organic acid content increases, the drop point decline, the appearance of darker, appear different odor, consistency, strength limit, similar to the viscosity decreases, and destruction of corrosion products generated grease structure substances, resulting soap oil separation. Therefore, in the long-term storage grease, should be stored in dry and ventilated environment, prevent sun exposure, and should be regularly checked the free base or free acid, corrosive and other changes in the project in order to ensure its quality and performance.

First, use the installation should carefully allow a strong punch, motor bearings adverse phenomena solutions allow a direct hit with a hammer bearing, not pass through the rolling pressure.

Second, the use of appropriate and accurate installation tools make use of special tools, try to avoid using fabric and staple fibers and the like.

Third, try to keep their surroundings clean bearing motor bearings generally use sodium based grease smile even invisible dust from entering the spherical roller bearings, will increase bearing wear, vibration and noise.

Fourth, to prevent corrosion of bearings : Direct hands to take bearings, to fully wash hands sweat, and coated with high-quality mineral oil before, during the rainy season and summer with particular attention to rust. In some special operating conditions, the bearings can get a longer life of the conventional calculation, especially in the case of light load. Bearing housing labyrinth seal mechanism and influencing factors of these special operating conditions is, when the rolling surface (track and rolling elements) is an effective lubricant film separating and limiting pollutants may lead to surface damage.