Common parsing the United States timken bearing friction torque technology imports
by:Waxing2020-10-15
Today, we'll explain the United States timken bearing import friction torque information.
Rolling bearing friction is mainly composed of roller and the ring groove rolling friction between sliding friction;
Cage with rolling body and sliding friction between the ring guide surface (
When no cage for the sliding friction between the rolling element)
;
Roller end face and face the sliding friction between the ring gear edge;
The viscous resistance of lubricant;
Sealing device of sliding friction, etc, and its size depends on the type, size, load bearing, rotational speed, lubrication, sealing and other factors.
In need of low friction torque, instruments and machinery usually choose deep groove ball bearings, cylindrical roller bearings, self-aligning ball bearings, to bear radial load;
Choose to load bearing single thrust ball bearing, if joint under load, can choose angular contact ball bearing, when the load Angle and the contact Angle is identical, can obtain the minimum friction torque;
If two angles of the gap is too big, can choose the centripetal and thrust bearing assembly of the ways to solve.
When choosing low friction torque of bearings, using the contact should be avoided in the structural design of sealing device.
At the same time, the mode of low friction torque of bearing lubrication, should be used in oil drip lubrication, oil mist lubrication and oil lubrication.
At high temperature alloy on the surface of the United States timken bearing import and shaft neck turn partial melting or killed when anti-friction bearings material serious deformation and torn bearing temperature rise sharply serious when bearing with axial bearing spin because of long time without oil rotary method and the preventing measures of burning bearing bush should start the lubricating oil system guarantee hydraulic lubrication system requirements and then start the unit, should not be immediately after the accelerated avoid machine 2 running normal overload or overspeed load rejection.
Improve the quality of assembly to ensure that the United States TIMKEN bearing import clearance cannot be too small but not too much oil seal quality should not leak to avoid run short of oil.
Because the bearing is high precision products, such as improper assembly is easy to cause damage to bearing channel, result in bearing damage.
When bearing assembly shall have a dedicated mold, not casually, only small circle of stress when pressure into the shaft, pressure can force the circle circle.
Require the use of pneumatic or hydraulic assembly, lower die when being connected to outside the level state, if there are any tilt can lead to bearing channel due to mechanical damage, and make the bearing guide ring.
Bearing in loaded on the rotor dynamic balance when it is easy to will be generated when the dynamic balance of iron into the United States TIMKEN bearing import inside, so it is best to install bearing before do dynamic balance.
There are some manufacturers in order to convenient assembly, assembly in bearing indoor coated with some oil or grease lubrication effect, but usually operators good amount of it is hard to control, if oil or grease in the bearing interior storing up more, in the bearing rotates along axis to the bearing inside easily.
Bearing is best not to apply oil or grease, if must apply to control shall not be storing up in bearing interior.
Rust paint is characterized by multiple in sealing type motor, the motor sound is very good, when it is assembled but put some time in the warehouse, the motor sound is very big, remove the United States TIMKEN bearing import has serious rust phenomenon.
Many manufacturers will think is a problem of bearing before, after our propaganda, motor factory now have realized mainly is a question of insulating varnish.
Acid varnish comes out of the problem is mainly due to the formation of corrosive substances under certain temperature and humidity, the channel after the corrosion result in bearing damage.
The problem now is only to choose good insulating paint, after drying and ventilation assembly after a period of time.
Bearing life is closely related to manufacturing, assembly, use, and must be made at each link to make the bearing is in optimum operation state, so as to prolong the service life of the United States TIMKEN bearing import.