German KOYO bearings KOYO models KOYO prices

KOYO bearings have raceways on both the inner and outer rings, and the inner and outer rings can move relative to each other along the bearing axis. This type of bearing is particularly suitable for withstanding combined loads, i.e., loads acting radially and axially at the same time. The axial load carrying capacity of angular contact ball bearings increases as the contact angle α increases. The contact angle is the angle between the line connecting the contact points of the ball and the raceway in the radial plane and the perpendicular to the bearing axis.

KOYO bearing applications

Single-row angular contact ball bearings: machine tool spindles, high-frequency motors, gas turbines, centrifuges, front wheels of small cars, differential pinion shafts, booster pumps, drilling platforms, food machinery, indexing heads, repair welding machines, low-noise cooling towers, electromechanical equipment, painting equipment, machine tool slot plates, arc welding machines Double-row angular contact ball bearings: oil pumps, Roots blowers, air compressors, various transmissions, fuel injection pumps, printing machinery, planetary gearboxes, extraction equipment, cycloidal gearboxes, food packaging machinery, electric welding machines, soldering irons, square boxes, gravity spray guns, wire stripping machines, half shafts, inspection and analysis equipment, fine chemical machinery.

KOYO bearing lubrication

The purposes of rolling bearing lubrication are to reduce internal friction and wear, prevent seizure; extend service life; dissipate frictional heat for cooling, prevent bearing overheating, and prevent lubricant aging; it also prevents foreign matter from entering the bearing interior, or prevents rust and corrosion. Bearing lubrication methods are divided into grease lubrication and oil lubrication. To ensure the bearing performs well, first select a lubrication method suitable for the operating conditions and purpose. If only lubrication is considered, oil lubrication has superior lubricity. However, grease lubrication has the advantage of simplifying the structure around the bearing. Compare the pros and cons of grease and oil lubrication. Pay special attention to the amount during lubrication; whether using oil or grease, too little leads to insufficient lubrication affecting bearing life, while too much creates significant resistance, affecting rotational speed.

KOYO bearing maintenance

1) When the bearing has operated for a certain period (or maintenance interval), remove all bearings; 2) Soak and clean the bearings with diesel or kerosene; if technical conditions allow, open the seals for cleaning; 3) After cleaning, let the cleaning oil drain dry, and visually inspect for damage; 4) Use a wooden rod (preferably a hollow tube) approximately 150mm long, with a diameter equal to the inner diameter of the angular contact ball bearing, fix one bearing at one end; 5) While rapidly rotating the bearing by hand, press the other end of the wooden rod (tube) against your ear or an audio amplifier microphone to listen for bearing rotation noise; 6) After fixing the bearing, laterally move the wooden rod to check for wear or looseness; 7) FAG bearings with severe looseness, excessive rotation noise, or serious defects should be discarded and replaced with the same model; 8) Take a bucket, melt an appropriate amount of lubricant grease (high-quality yellow dry oil) over a gentle flame (do not overheat), immerse the inspected bearings in the bucket until no bubbles emerge. Remove the bearings before the grease cools for minimal residual grease. Remove the angular contact ball bearings after the grease cools for maximal residual grease. Determine the required amount of residual grease as needed. 9) Wipe the external grease off the bearings with a soft cloth or toilet paper, and install the FAG bearings back onto the pulley in their original state; maintenance work is then complete.

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