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INA bearings is the geostationary ring and rotating ring of deep groove ball bearings are respectively and mount the static part (usually bearing) and a rotating part (usually the axis) with consolidation, in order to achieve under rotating state transfer load and limited movement system relative to the basic task static systematic position.
On the shaft and bearing seat, rolling bearing is fixed on the radial, axial and tangential direction three position. Radial and tangential orientation through the tight fit of the bearing mining, axial position only in a few cases the use of tight fit; usually adopts the axial limiting parts, such as the end cap and the ring to limit the axial position in the context of clearance.
Bearing should pay attention to the following four points when selecting a fit
The circumferential surface of bearing rings should have good support and force uniform, in order to reduce the distortion and can give full play to the bearing capacity;
Bearing rings in their mating surfaces cannot slide along tangential direction, otherwise it will damage the mating surface;
Free end bearing must adapt to changes in length and shaft and the bearing seat hole, which must have the ability to adapt to the axial position within a certain range of swimming;
We must make a deep groove ball bearing installation and removal easy, do the time saving, cost.
Cooperating use of deep groove ball bearing is very good, hope everyone in the selection of comprehensive consideration of the above four points for attention.
INA bearing and bilateral of grease lubrication with oil or dust cover, sealing ring bearings before mounting without cleaning. Size and finishing check related parts.
1, grease lubrication
INA bearings lubrication is best stop during the implementation plan of equipment, and supplement on a regular basis, at the same time, the old grease removed through oil spills or empty the old grease out. Prior to joining the fresh oil injection inlet should be clean. If the bearing box without grease nipple, should open the housing lid or cover, in order to remove the old grease, clean, add fresh oils of the same model.
2, lubricating oil
Periodically check the oil level and oil, under normal circumstances, the normal level for equipment level windows or labeled 1/3-2/3 range. Fill the cup of oil for oil, oil level display only representatives of oil filling capacity, while the bearing box oil level is to meet operational requirements, oil cup oil level lower than the total volume of 1/4 could be considered to fill oil.
Check and fill oil method, take out a small amount of lubricating oil as a sample and fresh lubricating oil were compared, the ability of the unit can be considered for oil quality testing, to ensure that the oil quality. If the sample looks like cloud, so the results may be mixed with water, emulsion also is we often say that the oil, you should replace the lubricant.
| Product Model | Inside Diameter | Outside Diameter | Thickness |
| NNU4996 NTN | 480 | 650 | 170 |
| NNU4992K NTN | 460 | 620 | 160 |