Principles for the use of grease in TIMKEN bearings

Lubrication is an important part of the use of TIMKEN bearings. Therefore, many people think that the more grease is used, the better the bearing, but it is not. There is also a degree of grease used.
 The general grease filling amount in TIMKEN bearings can refer to the following principles:
(1) The general bearing should not be filled with grease to fit 1/2-3/4 of the entire space of the bearing cavity;
(2) 2/3-3/4 of the horizontal bearing filling the inner cavity space;
(3) The vertically mounted bearing fills 1/2 (upper side) of the inner space of the cavity, 3/4 (lower side);
(4) In the environment of easy pollution, for the bearings of low or medium speed, fill the entire space in the bearing and bearing box;
(5) High-speed bearings should be placed in high-quality lubricating oil before loading. Generally, it should be soaked in the base oil of the installed grease to avoid bearing burnout caused by insufficient lubricating oil on the friction surface during starting.
TIMKEN bearing greases are usually expressed in terms of apparent viscosity or similar viscosity. When describing the viscosity of the grease, the temperature and shear rate must be specified. Similar viscosity indicators can be used to control its low temperature fluidity and pumpability.
One of the important indicators to measure the low temperature performance of TIMKEN bearing grease is the low temperature torque, that is, the degree of rotation of the low speed flow bearing at low temperature (below -20 ° c). The low temperature torque of the grease is determined by the starting torque and The average value of the torque after turning 60 mm is indicated.
The evaporability (degree) of TIMKEN bearing grease indicates the degree of volatilization of the grease when the grease is used for a long period of time under high temperature conditions. The smaller the evaporability, the better. The evaporability of the fat depends primarily on the nature of the lubricating oil and the fraction composition.
Oxidation stability refers to the ability of grease to resist heat and oxygen when used for long-term storage or long-term high temperature, maintaining its ability to not permanently change. Due to oxidation, the free base content is reduced or the free organic acid content is increased, the dropping point is lowered, the appearance color is deepened, the odor is exhibited, the consistency, the strength limit, the similar viscosity is decreased, the corrosive product is formed, and the structure of the grease is broken. Substance, causing the separation of soap oil. Therefore, in the long-term storage of grease, it should be stored in a dry and ventilated environment to prevent exposure to sunlight, and regular changes should be made to the changes of free alkali or free organic acid, corrosive and other items to ensure its quality and performance.

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Advantages of using oil lubrication for INA bearings

INA bearings are precision components and their use must be carried out with care. No matter how high-performance bearings are used, if not used properly, the high performance will not be expected. So what is the use of the bearing? Pay attention to the following when using bearings:
1. Keep the bearings and their surroundings clean.
Even small dust that is invisible to the eyes can have a bad effect on the bearings. So keep the area clean so that the dust does not intrude into the INA bearing.
2. Carefully use the bearing to give the bearing a strong impact during use, which will cause scratches and indentations, which may be the cause of the accident. In severe cases, cracks and breaks occur, so care must be taken.
3, use the appropriate operating tools
Avoid using existing tools and use the right tools.
4, pay attention to the rust of the INA bearing
When operating the bearing, the sweat on the hand can cause rust. Be careful to use a clean hand, it is best to wear gloves as much as possible.
It is very important to understand how the use of the bearing will do more with less.
When the mechanical parts near the bearing have been lubricated with oil or need to be dissipated by lubricating oil, the bearings should be lubricated with oil. There may be heat dissipation requirements when the bearing is under heavy load or high speed, or when external heat is introduced.
Micro-lubrication methods, such as drip lubrication, oil mist lubrication or oil and gas lubrication, ensure that the oil loss and bearing friction are small.
When air is used as the carrier, the oil can be supplied directly and the gas flow helps to seal.
INA Bearings are extremely fast and require good cooling of the fruit, allowing a large amount of lubricant to be sprayed directly onto all contact surfaces.

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