Rolling structure

Common Rolling generally consists of two rings (ie, inner, outer), the basic element rolling elements and cage and other components. Usually the inner ring and the journal mate and rotate with the shaft, the outer ring mounted in a rack of the high speed bearing hole stationary. When the inner and outer ring relative rotation, rolling into account, the outer ring raceway, the rolling body cage uniform distribution and to avoid contact between the adjacent rolling elements and friction, and wear.
Inner and outer rings and rolling elements of rolling bearings generally use a dedicated rolling bearing steel, such as GCr9, GCr15, GCr15SiMn etc. retainer is used softer materials such as carbon steel plate by stamping, or copper alloy, plastic and other system to make.

Rolling the type selection

When you select the type of rolling bearings, bearing the working load should be considered (size, nature, direction), speed and other requirements.
1) The speed is high, the load is small, the requirements should be selected when the ball bearing high precision rotation; low speed, load impact load is large or the selection of roller bearings.
2) the bearing by both radial and axial load, generally used in the angular contact ball bearings or tapered roller bearings; if a large radial load, axial load is small, can use deep groove ball bearings; and when the axial load large radial load hours, can be thrust angular contact ball bearings, four row cylindrical roller bearing or a combination of structural choose thrust ball bearings and deep groove ball bearing.
3) When all kinds of bearings, the tilt angle between the outer ring should be controlled within the allowable angle of deflection value, otherwise it will increase the additional load bearing and reduce life expectancy.
4) the larger shaft stiffness requirements, should use double row ball bearings, roller bearings or four-point contact ball bearings, the load is large or larger impact force may be employed on the same point double column or row roller bearings . Bearing system rigidity and high rotational accuracy can be increased shaft, reducing noise and vibration.
5) For ease of installation and removal, and adjusting the gap often used in inner and outer rings separable separation of bearings (such as tapered roller bearings, four row cylindrical roller bearings).

hybrid bearings Precautions

Hybrid Hybrid bearings are sliding bearings in one, it is to work in a fluid state energy lubricated plain bearings, while static Hybrid bearings can operate under hydrostatic lubrication and hydrodynamic lubrication. When we pressed hybrid bearings in the movement need to pay attention to the following six things, prevent static journal bearing failure during use.
1, the normal use should be replaced 2 # spindle oil and coarse and fine filter after one year.
2, be sure to join the three-layer silk cloth filter during normal use pumping stations to add oil.
3, spindle pulley, wheel loading and unloading must be carried out in the state of the pumping station work. That spindle under hydrostatic oil floating state. This does not damage the spindle and Hybrid Bearing manufacturers.
4, the front wheel spindle work and grinding hydrostatic pressure pumping observation is within specification range.
5, when the device is shut down, it must first stopped grinding motor, until wheel stop, then turn off the pump station, or easy to damage the grinding head.
6, for any component on the pumping station, be sure to remove the high-pressure inlet hose fittings, complete replacement parts, oil self circulation 15-20 minutes before the inlet pipe connected to the grinding head, thus ensuring into the grinding spindle oil is filtered through fine super clean spindle oil. This can prolong the life of the hybrid spindle.

Precision angular contact ball bearings

In the several bearings to precision angular contact ball bearings most widely used. We all know that angular contact ball bearing rolling body is ball; because it is a point contact (as opposed to line contact roller bearings), so it can provide higher speeds, less heat and higher rotational accuracy. In some super-high-speed spindle applications, but also the use of ceramic balls (typically Si3N4 or Al2O3) hybrid bearings. Compared with the traditional full hardenability ball, ceramic ball material itself characteristic gives ceramic ball bearings with high stiffness, high speed, high temperature, long life, to meet customer demand for high-end products bearing the machine.
On angular contact ball bearing contact angle, the more popular 15 and 25 of the contact angle;???? 15, the contact angle is usually a relatively high speed performance, while 25 of the contact angle with high axial carrying capacity. Due to the impact of the choice of pre-loaded precision angular contact ball bearing applications is very large, for example, in high load, high rigidity of the occasion, the general will choose medium or heavy Bearing manufacturing machine preload; and for some high-speed, high-precision applications We in the early selection of the bearing, need to pay attention to choose the right pre-load, general light preload more common. Preload generally divided into light, medium and heavy three; in order to facilitate the customer's use, now several major bearing manufacturer in the world are generally available previously ground bearing end faces plus preloaded bearing, which is what we usually refer to the universal matching precision angular contact ball bearings form. This kind of Wind turbine bearing preload adjustment eliminates the customers, thus saving installation time.