Bearing installation, good or bad, will affect the accuracy, bearing life and performance. , The installation of the bearing, in accordance with the operating standards include the following items, including the bearing installation.
  A cleaning bearings and related parts
Greased bearings and both a seal or dust cover, seals bearing installation without washing.
  Second, check the size of the parts and finishing
  Third, the installation method
Bearings shall be installed according to the nature of the bearing structure, size, and bearing components with pressure should be added to the tight fit of the ferrule end surface, shall not be passed through the rolling pressure, bearing installation generally use the following method:
  (a) press-fit
So that the bearing inner ring and shaft tight with the outer ring and the bearing hole is loose with the available presses will be bearing the first pressure mounted on the shaft, then the axis together with press-fit bearings with load bearing hole, the side surface of the bearing inner ring, a soft metal material of the pad assembly casing (copper or mild steel), the assembly casing diameter should be slightly larger than the journal diameter, outside diameter diameter slightly smaller than the bearing inner ring ribs, so as not to pressure in the cage. The bearing outer ring and the bearing hole is a tight fit, the inner ring and the shaft is loose with the bearing first pressed into the bearing hole, this time the assembly casing outside diameter should be slightly smaller than the diameter of the bore. If the bearing ring and shaft and housing bore are a tight fit to install the indoor ring and outer ring to be pressed into the shaft and housing bore, the assembly structure of the casing should be able to charge tight end face of the bearing inner and outer rings.
  (b) heating with
By heating bearings or bearing, the use of thermal expansion will be a tight fit to change the installation method for a loose fit. Is a common and labor-saving method of installation. This method is suitable for the large amount of interference the installation of bearings, bearing or separable bearing rings into the tank before the hot charging uniform heating 80-100 ℃, and then removed from the oil onto the shaft as soon as possible, in order to to prevent the inner face after cooling and shaft shoulder fit is not tight, bearing cooling, the axial fastening. Tight fit of the bearing outer ring and light metal bearing heating bearing thermal loading can be avoided with the surface by abrasion. Tank heating bearings, in a certain distance should be the network gate, from the bottom or hanging on a hook bearing, bearing can not be put on the bottom prevent Shen impurities into the bearing or uneven heating tank must have a thermometer, strictly control the oil temperature must not exceed 100 ° C, to prevent tempering effect, reduce the hardness of the rings. (c) tapered bore bearing installation
Tapered bore bearings can be mounted directly on the taper of the journal, or load adapter sleeves and withdrawal sleeves on the cone, with the tightness of the available bearing radial clearance reduction is measured, therefore, before installation measurement of the radial bearing clearance, clearance installation process should be measured regularly in order to achieve the clearance needed to reduce the amount so far, generally used when installing the locknut, may also have heating installed.
  (d) the installation of the thrust bearing
Well with the axis with the general thrust bearings for the transition with the seat and the bearing hole with general clearance fit, this bearing is easier to install, two-way thrust bearing axis Springs should be fixed on the shaft to prevent relative in the axis of rotation. Bearing installation, under normal circumstances is the axis of rotation of the majority, the inner ring and the shaft with the win too with the bearing outer ring and bearing room with clearance fit.
  4, bearing installation check
  Fifth, add lubricant
 
  
Installation of high-speed precision angular contact ball bearings
  High-speed angular contact ball bearings, mainly for the load lighter, high-speed rotating occasions, requiring bearing high-precision, high speed, low temperature rise low vibration and the life of. Often for high-speed electric spindle bearing installed in pairs, the key component parts of the inner surface of the grinding machine of high speed electric spindle.
  The main technical indicators:
  A bearing precision index: exceed GB/307.1-94 the P4 level precision
  (2) high-speed performance: dmN value of 1.3 ~ 1.8x 106 / min.
   1500 h   " b="3. 使用寿命（平均）： ＞1500 h">(3) life (average):> 1500 h
  High-speed angular contact ball bearing service life and a great relationship, should note the following:
  A bearing installation should be clean, clean room, bearing carefully matching, bearing with every lap to go through the grind, the premise of maintaining the level of inside and outside the ring spacers, spacer parallelism should be controlled in 1um the following;
  Clean. Bearings should be cleaned before installation, cleaning inner slopes upward, should be flexible and feel a sense of stagnation, dried, placed in a specified amount of grease, such as in the case of oil mist lubrication should be placed in a small amount of oil mist of oil;
  Bearing installation should be used specialized tools, even by force, is strictly prohibited to beat;
  Bearings shall be stored in clean air, corrosive gases, no more than 65% relative humidity, long-term storage should be periodically rust-proof.
 
  
Tapered roller bearings, water pump bearing installation
  Bearing installation: the installation of bearings must be in a dry, clean environment conditions. Before installation, carefully check the mating surface of the shaft and shell, the face of the convex shoulder trench and connection quality of surface processing. All match the connected surface must be carefully cleaned and remove the burrs, casting raw surface must be in addition to net sand.
  Bearing installation should be preceded by cleaning with gasoline or kerosene, clean and dry before use, and to ensure good lubrication, bearings are commonly used grease lubrication, oil lubrication can be used. With grease lubrication should be used free of impurities, anti-oxidation, rust and extreme pressure performance superior grease. The grease filling is 30% -60% of the bearings and the bearing capacity of the container, not too much. With sealing structure of the double row tapered roller bearings and pump shaft bearing filled a good grease, users can directly use, not for cleaning.
  Bearing installation, you must exert equal pressure on the circumference of the ferrule end face pressed into the ring not want first-class tools to tap the bearing face, so as not to damage the bearing. Small amount of interference with the sleeve at room temperature, press and hold the bearing ring face hammer to beat the sleeve through the sleeve rings evenly pressed into. If large quantities of installation can be a hydraulic press. Indentation, should ensure that the outer end and shell shoulder end, the inner face and the shaft shoulder ends pressed, does not allow gaps.
  When the amount of interference is large, the oil bath can be used for heating or induction heating bearing the installation, the heating temperature range is 80 ℃ -100 ℃, the maximum can not exceed 120 ℃. At the same time, the application of nuts or other appropriate method for fastening the bearing, the width direction in order to prevent the bearing cooling contraction have a gap between leaving the ring and shaft shoulder.
  Single row tapered roller bearing installation of the final clearance adjustment. Clearance values ??should be specifically identified under different use conditions and with the size of the amount of interference. When necessary, should be tested to determine. Double row tapered roller bearings and pump shaft bearing at the factory adjust the clearance, the installation without further adjustment. Rotation test bearing installation should be carried out first for a rotating shaft or bearing housing, without exception, then the power of the no-load, low speed, then gradually increase as the operation of rotating speed and load, and to detect noise, vibration and temperature rise abnormal, stop operation and check. Before running the test is normal delivery.
  Bearing Disassembly: Remove the bearing intend to continue to use, you should use the appropriate removal tool. The demolition of the interference fit of the ring, only to increase the tension in the ring, never to allow demolition of the rolling elements, or the rolling element and raceway will be crushed.
  Three bearings use: the use of location and conditions of use and environmental conditions to select the specifications of size, accuracy, with a suitable bearing is the premise to ensure that the bearing life and reliability.
  1, using the site: tapered roller bearings are suitable to withstand the radial load mainly radial and axial joint load, usually two sets of bearing paired, primarily in the car's front and rear wheel hub, active bevel gear differential , reducer and transmission parts.
  2, which allows speed: in a correctly installed, well-oiled environment, allowing the bearing limit speed of 0.3-0.5 times. Under normal circumstances, the limit of 0.2 times the speed of the most suitable.
  3, allowing the angle of inclination: inclined tapered roller bearings generally do not allow shaft relative shell hole, if tilt does not exceed 2 '.
  4, allowing the temperature: under normal load, and lubricant high temperature performance, and adequate lubrication conditions, the general bearings allow the -30 ° C -150 ° C ambient temperature.


Other News:
Self-aligning ball bearings technical requirements
The installation of bearings
the structure, classification, and assembly process of rolling bearings
Arrest made in deadly 2011 Yale tailgating crash
Dubai plans underwater hotel made of submerged discs, not that it should surpris
the bearing rating and bearing accuracy
In letters, bin Laden worried about al-Qaida image
Angular contact ball bearing related knowledge