KOYO bearing maintenance and lubrication knowledge usage - bearing
KOYO bearing friction resistance of the bearing of the proper lubrication for them successfully working is vital.
For ordinary or sleeve bearing, there are different in the different practice principle.
In order to make the maintenance of anti friction bearing, it is necessary to understand and use these principles.
KOYO bearing can usually install space is limited.
In most cases, the axis (
Or bearing inside diameter)
According to mechanical design or other design limitations.
Therefore, the choice of the bearing type and size is determined based on the inner diameter of the bearing.
Therefore, the size of the main bearing table is the size of the diameter of the table according to the international scope and preparation.
There are many types of form, it is best in the use of machinery, designed for measuring bearing (
The purpose of which is convenient to buy bearing in it on one side, some bearing directory entry models, but in China some non-standard bearing KOYO bearing the size of the China, there is no spot, futures will be very long, sometimes, let the time to consider the choice of bearing and after replacement of capital)
Bearing load, whose nature is suitable for bearing load, size, direction is changing.
Normally, the size of the basic load rating displayed in the table.
However, axial load and radial load, and so on, is also an important factor, selection of the bearing.
When the proportion of competing and needle roller bearings, needle roller bearings, usually have higher load capacity and large vibration and shock loads.
, speed, KOYO bearing type, size, precision, cage, load, lubrication, cooling method on the basis of factors determine the speed of the commitment.
Table lists the in scale bearing precision bearing lubricating oil and grease, according to the agreed rate.
Typically, deep groove ball bearings, self-aligning ball bearing and cylindrical roller bearing used in high-speed operation.
Tolerance, KOYO bearing, dimensional accuracy and rotation accuracy of bearing is based on the international organization for standardization (
For high precision and high speed machinery, recommend the use of five or more precision bearing, deep groove ball bearings, angular contact ball bearing or cylindrical roller bearing, high precision operation, and machinery.
Rigid body movement and bearing raceway contact pressure will produce elastic deformation.
Some machines need to reduce the elastic deformation.
Than the ball bearing roller bearings have a small elastic deformation [
And in some cases, KOYO bearing pre-tightening force, in order to increase rigidity.
This process is typically used for deep groove ball bearings, angular contact ball bearings and tapered roller bearing inner ring, shaft bending, the change of the shaft or the bearing tolerance, inside and outside circle and error, will cause the eccentric.
In order to prevent spend big, eccentric Angle self-aligning ball bearings, the spherical roller bearing, spherical bearing is a better choice.
Voice frequency and torque, mobile bearing the manufacturing precision of the scale of production is high, therefore, voice and torque is small.
Deep groove ball bearings and cylindrical roller bearing is in a low voice, and have special requirements of low torque applications.
, installation and removal, some applications often require disassembly and installation, and maintenance to ensure to test it.
Can be installed inside and outside, such as bearing ring, cylindrical roller bearings, needle roller bearings, tapered bearings, the combination of the occasion.
Since the heart cone hole and the in spike sleeve roller bearings, self-aligning ball bearing also simplifies the installation process.
Oil lubrication in KOYO bearing lubrication oil resistance to change is composed of the following factors: the design of the bearing and load;
Oil viscosity, the dosage and the speed of the bearing.
Just when the dosage of the oil in the friction torque when the minimum contact surface to form a layer of film.
But too much oil, the oil viscosity is high friction increases.
Lubrication, however, to maintain the security and pay little attention to the desire of the friction loss, usually by a majority of advantage.
This means that more oil, usually more heavy oil, will be used to reduce or leakage losses due to evaporation.
For anti friction bearing with grease lubrication in filling grease, may not need to use the theory of high pressure, unless very careful to use.
High pressure can damage the bearing, waste grease, excessive grease caused by high temperature at risk and to cause bearing around invisible environment.
In most applications, KOYO bearing ball or roller bearing lubrication, if grease level accounted for a third to a half of bearing capacity.
Beyond the amount of usually will be sealed shell discharge and waste.
In practice, it is necessary to use there is more than the recommended amount of grease.
When the required torque low, only need a very small amount of grease lubrication of bearings will be finished.
When the speed is very low and exposure in dust or moisture, KOYO bearing bearing might almost be filled.
Bearing under the condition of high speed and high temperature usually need more frequent than in general lubrication.
Store in a clean container grease.
Short, KOYO bearings with clean pulp or grease gun to inject grease bearing.
Keep on the grease container sealed.
Bearing grease can't too full.
Lubricant will ever filling full bearing box, absorb dirt and cause trouble.
Too much lubricant will also cause bearing overheating.
This phenomenon is especially likely to happen during the high speed shaft -
Lubricant turn cause overheating.