Bearing is installed correctly, affecting accuracy, longevity, performance. Therefore, the design and assembly sector for the SKF bearings installation to be adequately studied. I hope to be in accordance with the operating standards for installation. The projects are usually operating standards are as follows:
(1) Check the associated component size and finishing conditions;
(2) Installation;
(3) supplying lubricant.
(4) cleaning bearings and miniature bearings associated parts;
(5) After installing the bearing inspection;
I hope in the upcoming installation, just open FAG bearings packaging. Lubricating oil, general do not have to clean, but the equipment used or high-speed bearings, etc., use clean oil washed to remove painted in miniature bearings rust inhibitor. General grease lubrication, without cleaning, direct filling grease. Moreover, the sealed bearing grease, used directly without cleaning. Removes rust bearings, rust, so you can not put aside.
When mounted to the housing, generally with more clearance, the amount of interference with the outer ring, usually pressed into the press, or is installed after the cooling method of shrink fit. With dry ice as a coolant, shrink fit the installation, moisture in the air condenses on the spherical roller bearing surface. Therefore, the need for appropriate corrosion protection.
Bearing installation method, because micro-bearing structure, with, conditions vary, in general, due to multi-axis rotation, so the interference fit to the inner ring. Cone of the occasion, mounted directly on the tapered shaft, or sleeve installation. Cylindrical bore bearings, multi-pressed into the press, or by hot charging method.
Bearings are precision components, and its use should also be carefully carried out. No matter how high-performance NSK Bearings, if used improperly, it will not get the expected performance. Note the use of the relevant bearing as follows:
1, use caution
Bearing in use to give a strong impact, it will have a scar and indentation, cause of the accident. Severe cases, crack, fracture, it must be noted.
2, to maintain clean bearing and the surrounding
Even the eyes can not see small dust, cylindrical roller bearings will give a bad influence. Therefore, to keep the surrounding clean so that dust will not invade bearings.
3, the use of appropriate operational tools
Avoid the existing tools instead, you must use the right tools.
4, pay attention to corrosion of bearings
Operation spherical bearings, the hands sweat will become rusty cause. To pay attention to clean hands operation, the best possible wear gloves.
How to choose the grease?
TIMKEN bearings lubricated for the life of the operation, and there is a very important influence, here to brief you choose the general principles of grease. Grease from the base oil, thickener and additives made of different types and different brands of the same type of grease performance varied widely, allowing different rotation limit, the choice is important to note. The performance of the grease base oil, typically in a low viscosity base oil for low temperature, high speed, high viscosity suitable for high temperature, high load. Between the lubrication performance thickeners, grease thickeners water determines the water resistance. In principle, you can not mix greases of different brands, and even the same kind of grease thickener, also due to the different additives adversely affect each other.
Bearing must be cleaned before installation do?
Thrust ball bearings coated with anti-rust oil, you must use clean gasoline or kerosene carefully cleaned, and then coated with a clean high-quality or high-temperature grease before installation. Cleanliness of rolling bearing life and vibration noise is very large. But we want to remind you is: do not be fully enclosed bearing cleaning refueling.
How to install and remove?
When installed directly hammering force bearing face and non-face should be compact, sleeve or other installation tools (tooling) so that the bearing force evenly, do not pass through the rolling power installation. If the mounting surface is coated with oil, will make the installation more smoothly. Such as interference with the larger bearing into the mineral oil should be heated to 80 ~ 90 ℃ soon as possible after installation, and strictly control the oil temperature does not exceed 100 ℃, in order to prevent tempering effect of reducing the hardness and impact dimensions recovery. When removing the difficulties, it is recommended that you use the removal tool pull the inner ring carefully poured hot oil, heat causes expansion bearing inner ring, making it easier to fall off.
Place on the mounting surface and installation requirements?
Yes. If there is iron-way bearing, burrs, dust and other foreign matter entering the bearing will generate noise and vibration during operation, even damage the raceways and rolling elements. So, before installing the bearing, you must ensure that the mounting surface and installation environment clean.
In lubricated bearings, oil coated better?
Lubricating linear bearings, oil coated the better, this is a common misconception. Bearings and bearing interior too much oil will cause excessive oil mixing, resulting in extremely high temperatures. INA Bearings filling quantity of lubricant inside the bearing space to fill 1/2 to 1/3 is appropriate, high-speed should be reduced to 1/3.
Bearing radial clearance smaller the better you?
Not all of tapered roller bearings require minimal clearance work, you must choose the appropriate clearance conditions. GB 4604-93, the bearing radial clearance is divided into five groups Group 2, 0, group 3, group 4 and group 5, clearance value of the order from small to big, where 0 is the standard clearance group. Basic radial clearance group for general operating conditions, temperature, and commonly used conventional interference fit; in high temperature, high speed, low noise, low friction bearings operating under special conditions are advised to use a large radial clearance; right precision spindle, machine tool spindle bearings should choose a smaller radial clearance; roller bearings can be maintained for a small amount of clearance work. In addition, separate bearings are indifferent clearance; Finally, the bearing clearance work after installation, pre-installation of the original than the clearance is small, because the bearings to withstand a certain load rotation, as well as load bearing fits and the resulting elastic deformation.



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