Cylindrical Roller Bearings
Rolling body is a cylindrical roller rolling bearing to the heart. Cylindrical Roller Bearings The internal structure of the roller was 90 ° perpendicular cross arrangement (which is also a cross roller bearing origin of the name), equipped with a space between the roller cage or spacers can be prevented inclined roller or rollers mutual grinding between police, effectively preventing the increase of rotational torque.
Bearing Features
1. roller and the raceway is in line contact or repair offline contacts, radial load capacity, suitable to withstand heavy load and shock load.
2. The friction coefficient is small, suitable for high-speed, speed close to the deep groove ball bearings.
3. N type and NU type can move axially, able to adapt due to thermal expansion or installation error of shaft and housing caused by the relative change in position can be used for supporting the free end.
4. shaft or housing bore machining are higher, install the rear bearing outer ring axis relative deflection should be strictly controlled to avoid contact stress concentration.
5. The inner or outer detachable, easy installation and removal.
Product Features
Cylindrical roller line contact with the raceway, large radial load capacity. Both to withstand heavy load and impact load, but also for high-speed rotation.
Cylindrical roller bearings raceways and rolling lanes geometry. After the improved design, with high load carrying capacity, the new design ribs and roller end, not only improves the axial bearing capacity, while improving the roller end wall contact areas and lubrication conditions, improved performance of the bearing.
 
Use application
Bearing use
Medium-sized motors, rolling stock, machine tool spindles, internal combustion engines, generators, gas turbines, gear boxes, rolling mill, vibrating screen, and lifting transportation machinery.
Accuracy class
Cylindrical Roller Bearings PO, P6, P5, P4, P2. Accuracy class sequentially from low to high ranking can be divided according to level of accuracy.
 
Commonly used to adjust the full complement cylindrical roller bearings radial clearance as follows:
1, cylindrical and oval bearing backlash, can be manually scrape or bearing equatorial plane after turning padded scratch repair method of adjusting.
2, cylindrical and oval bearing the headspace, can be hand-scrape method or circumstances permit bearing the equatorial plane padded adjustments.
3, for more oil wedge fixed bearing, in principle, allow repair scratch and adjust the bearing clearance, the gap should be replaced with new tile inappropriate.
4, for more oil wedge tilting bearing, does not allow repair scratch pad, the gap should be replaced due to inappropriate tile. The thickness of the adjustable tile, tile can be adjusted by the amount of the adjustment in the next block behind tile plus stainless steel pad, thickness or thinned adjustment block approach. Note for more oil wedge tilting bearing, among the same group of tile thickness error should be less than 0.01mm.
 
Note issue
Vibration aspects
In normal use, the vibration of the bearing damage is very sensitive, peeling, indentation, corrosion, cracks, wear, etc. will be reflected in the bearing vibration measurement. So, through the use of special bearing vibration measurement device (frequency analyzer, etc.) to measure the size of the vibration, the frequency distribution can be inferred by abnormal circumstances. The measured values due to the use of conditions or bearing sensor installation location, etc., and thus requires prior to each machine measurements were determined after analysis and comparison criteria.
Terms of temperature
High temperature frequently expressed cylindrical roller bearings are in an abnormal situation. High temperature is also harmful to the bearing lubricant. Sometimes bearing overheating can be attributed to the bearing lubricant. If the bearing temperature over 125 ºC even move to reduce long-term bearing life. Causes high temperature bearings include: lack of lubrication or excessive lubrication, bearing raceways containing impurities, the speed limit is too high, bearing long-term overload and so on.