Bearing the rated load and limit rotational speed is established in the wig lubrication under the condition of appropriate, and lubrication refers to the appropriate lubricant suitable and appropriate dose. Use 3 lithium base grease, not according to the working condition of spherical roller bearing choose to use a suitable type of grease. Such as: the low speed motor, 3 # lithium base grease a brighter degree is low, can't form the good oil film, due to bad lubrication. SKF 6205 Deep Groove Ball Bearings http://www.fagbearings-hk.com/newproduct/SKF-6205-bearings-60271.html wear failure. Because most FAG bearing no non-stop grease devices, which can't change timely supplement, grease, lead to lack of grease, metamorphism and so on, make the lubrication, bearing wear failure.
Bearing spindle bearing system requires both high rigidity, asked for a light quality as much as possible, in order to overcome the contradiction, can take measures such as reducing the surface roughness and improve the surface strengthening the support stiffness, in order to improve the use of hollow shaft to reduce the system quality, etc.
(1) before the bearing is installed, should use the appropriate measuring tools according to the provisions of the technical requirements on the design drawing to check shaft and hole and the relevant parts of the processing quality (such as dimensional accuracy and shape accuracy and surface roughness, etc.).
(2) the shaft and bearing hole assembly there such as bruising, burr, rust stain on the surface or solid particles (such as abrasive dust, sand, clay), not only can make the self-aligning ball bearing installation difficulties and make the installation position is not correct, and solid particles such as falling into a bearing inner grinding effect, when self-aligning ball bearing rotating grinding or bruising bearing surface of the work, so must be carefully checked before the installation, if found to have the above defects, should be revised. For example using oil file to remove burrs, bump touch mark, rusty spot, with fine abrasive cloth lighting, and like a clean solid particles, dirt, etc.
(3) should be assembly with clean the surface of the gasoline, kerosene, toluene and xylene solution washing clean, dry and clean duster cloth, and then coated with a thin layer of lubricating oil, it can make the operation more convenient installation.
(4) installed in the open the self-aligning ball bearing encapsulation, put it into the liquids such as gasoline with handle gently gently turning, to ensure the cage, encapsulated oil on the surface of the rolling element and raceway thoroughly washed clean.
(5) a large number of bearings, cleaning first with a temperature of 90 ~ 100 ℃ heat oil pour hot to melt encapsulated oil, at the same time with seamless all mouth and no net exfoliation tools to dig the old oil, then pour hot a few minutes, then rinse with kerosene oil, clean with gasoline again finally. After washing clean, on film gloves should be worn to self-aligning ball bearing on the worktable of dry clean cloth or paper.
(6) note with sealed bearing do not clean with this law, the interior of the seal should remain the same do not wash.
Fracture, bearing cage bearing stick to death, the collapse of the inspection found that the shaft extension end hard metamorphic lubricating grease. Keep loose, spherical roller bearing overheating Because of the motor used in outdoor environment temperature is too low, make grease viscosity increases, poor lubrication, bearing wear failure.
The viscosity of the grease has been affected by the temperature, make the bad bearing lubrication. Summer temperatures as high as 37 C, greatly reduce the viscosity of grease, and winter minus 30 "C make grease viscosity increases in low temperature, and even caking, have formed a bad good oil film, so make spherical roller bearing lubrication failure, the wear failure.