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Bearing installation is good or bad or not, will affect the bearing precision, long life and performance. Accordingly, the full study of SKF bearing installation shall be in accordance with the following criteria for bearing installation.
1, clean the bearings and related parts, (already grease-lubricated bearings and double-sided with seals or shields, FAG bearing of the seals without cleaning before installation.)
2, check the size of the relevant part and finishing
3, the installation of bearing should be installed according to the bearing structure, dimensions and bearing components combined with nature may be, pressure should be directly added to the tight fit on the ferrule end face shall not pass through the rolling pressure.
Bearing installation use the following method:
Pressure into tie: bearing within ring and axis makes tight tie, outer ring and bearing block hole is more pine tie Shi, available pressure machine will bearing first pressure loaded in axis Shang, then will axis together with bearing together loaded into bearing block hole within, pressure loaded Shi in bearing within ring end surface Shang, pad a soft metal do of Assembly casing (copper or soft steel), bearing outer ring and bearing block hole tight tie, within ring and axis for more pine tie Shi, may will bearing first pressure into bearing block hole within, Assembly sleeve outside diameter slightly smaller than the bore diameter. bearing ring and shaft and the bore is tight co-ordination, installing the indoor coil and simultaneously pressed into the shaft and hole in the outer ring, assemble the casing structure should be able to simultaneously put tight end face of the bearing inner ring and outer ring.
Heat match: by heating the bearing or housing, Using hot expansion will tight tie changes for pine tie of installed method. is a common and effort of installed method. this law for had Ying volume larger of bearing of installed, hot loaded Qian put bearing or can separation type bearing of rings into tank in the uniform heating 80-100 ℃, then from oil in the removed as soon as possible loaded to axis Shang, for prevent cooling Hou within ring end surface and axis shoulder fitting not tight, NSK bearing cooling Hou can again for axis to tight solid. bearing outer ring and light metal system of bearing block tight tie Shi, used heating bearing block of hot loaded method, can avoid tie surface was scrapes. Fuel tank heating bearings, from the bottom should have a mesh on a certain distance, or hanging by hooks bearing, they should not be placed on the bottom to prevent impurities into the bearing or uneven heat-sinking, must have a thermometer in the tank, tightly controlled oil temperature must not exceed 100 ° c, to prevent tempering effect of ferrule hardness decrease.
Bearing installation methods, under normal circumstances is rotating, and tie to win match of the inner ring and shaft, the bearing outer ring and housing combined with clearance fit. bearing play check after the end of the TIMKEN bearing installation and running checks immediately, determined to install properly.
Reliable maintenance is to ensure that main means of long period operation of bearings, equipment running for some time, professional and technical personnel to inspect equipment maintenance in a timely manner, mainly in the following aspects:
1, check the operating temperature of the bearing, is 65 degrees.
2, check the axial play of the moving parts. main bearing clearance is not eligible.
3, check the bearing inner and outer runways for pitting, corrosion, potholes, cracks and other defects.
4, oil or grease lubrication conditions, and to replace or add in a timely manner, but not too much, require lubricant to one-third per cent, oil one-third.
Hydrolyzer for urea fertilizer industry wastewater to a terminal device, the core equipment hydrolysis pump is multistage, high speed, high temperature, high voltage equipment. run instability over the years, the urea production was greatly affected.
Mainly in the life cycle of the INA bearing short, machine vibration failure. through our analysts believe its bearing service models did not fit, carefully summarize hydrolysis characteristics of pumps, decided to use a deep groove ball bearing, sure, we developed a specification for the installation, use and maintenance of the bearing. strictly enforced. Retrofitted by running in good condition, operation cycle increased substantially, strong support my company's urea product of the mine.
| Product Model | Inside Diameter | Outside Diameter | Thickness |
| 7208C NSK | 40 | 80 | 18 |
| 7208BEA NSK | 40 | 80 | 18 |