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How to deal with the spherical roller bearings use the matters needing attention of the grease
by:Waxing
2020-10-17
In the using process of spherical roller bearing lubrication is important one annulus, therefore, many people think that the more use of TIMKEN bearing grease, the better, it's not.
The amount of grease is also have a degree.
Spherical roller bearings in general grease filling quantity can refer to the following principles: (
1)
General bearings should not be filled with grease, with 1/2 - to all bearing inner cavity space
3/4;
(
2)
Two-thirds of horizontal bearing filled lumen space -
3/4;
(
3)
Half of the vertical bearing installed for filling in the cavity space (
Upper)
, 3/4 (
Underside)
;
(
4)
In easy to pollution of the environment, for low or medium speed bearings, the TIMKEN bearing and the bearing box full fill the space;
(
5)
High-speed bearing in the bearing should be taken before fat on the high quality lubricating oil, is generally used on the grease base oil of soaking, lest at startup caused by insufficient friction surface grease bearing burn out.
Self-aligning roller bearing grease is usually make a similar viscosity or apparent viscosity, said when, on the viscosity of grease must specify the temperature and shear rate.
Similar viscosity index can be used to control the low temperature fluidity and pumping.
Measuring spherical roller bearing grease performance at low temperature is one of the important index of low temperature torque, namely at low temperature (
- 20 ° c below)
Grease block bearing rotational degree of low speed flows, the low temperature torque of the grease by the starting torque and rotation torque after 60 mm average said.
The evaporative (spherical roller bearing grease
C)
Said in the long-term use under condition of high temperature grease, grease oil volatilization, evaporative as small as possible.
The evaporative mainly depends on the nature of the lubricating oil and fat fractions.
Oxidation stability is refers to the grease when used in long-term storage or long-term high temperature resistance to heat and oxygen, permanent changes in their ability to maintain its nature will not occur.
Due to oxidation, are often free alkali content reduced or free organic acid content increases, drop point drop, dark appearance, appear different smell, consistency, ultimate strength, similar viscosity decreased, generated corrosive product and destroy the material of grease, soap oil separation.
In long-term storage of grease, therefore, should be stored in dry and ventilated environment, prevent sun, and shall regularly check free base or free change of the project such as organic acid, corrosion resistance, to ensure its quality and performance.
A, use when installation should careful not allowed powerful punch, bad phenomenon in a motor bearing solutions are not allowed to use hammer percussion bearing directly, not allowed by transfer roller pressure.
2, using appropriate and accurate installation tools use a special tool, as far as possible to avoid use cloth class and short fiber, things like that.
Third, try to keep the bearing and the surrounding environment clean motor bearings commonly used sodium base grease even invisible to the naked eye the smile of the dust into the spherical roller bearings, also can increase the wear and tear of TIMKEN bearings, vibration and noise.
Four, to prevent rusting TIMKEN bearing directly take bearing with the hand, should fully wash hands sweat, and again after coated with high quality mineral oils, especially in the rainy season and summer to pay attention to rust.
In some special operating conditions, bearing can get more than the life of the traditional computing, especially in the case of light load.
Bearing box of labyrinth seal mechanism and influence factors analysis of the specific operating conditions is, when the rolling surface (
Track and rolling piece)
Can be separated by a lubricating oil film effectively and the surface of the limit of pollutants may cause damage.
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