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Steinel bearings are bearings that operate under sliding friction. Plain bearings operate smoothly, reliably, and without noise. Under liquid lubrication conditions, the sliding surfaces are separated by lubricating oil without direct contact, which can greatly reduce friction loss and surface wear; the oil film also has a certain vibration absorption capacity. However, the starting friction resistance is relatively high. The part of the shaft supported by the bearing is called the journal, and the part mating with the journal is called the bearing bush. The anti-friction material layer cast on the inner surface to improve the friction properties of the bearing bush surface is called the bearing lining. The materials of the bearing bush and bearing lining are collectively referred to as plain bearing materials. Plain bearings are generally applied in high-speed and light-load operating conditions.

Steinel bearing applications

Single-row angular contact ball bearings: machine tool spindles, high-frequency motors, gas turbines, centrifugal separators, 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, cycloid 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.

Steinel 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 lubrication and oil lubrication. Pay special attention to the quantity during lubrication; whether using oil or grease, too little leads to insufficient lubrication affecting bearing life, while too much generates high resistance, affecting rotational speed.

Steinel bearing maintenance

1) When the bearing has operated for a certain period (or during the maintenance interval), remove all bearings; 2) Soak and clean the bearings with diesel or kerosene; if technical conditions allow, it is best to open the seal covers for cleaning; 3) After cleaning, let the cleaning oil air dry, and visually inspect for damage; 4) Use a wooden stick (preferably a hollow tube) about 150mm long, with a diameter equal to the inner diameter of the angular contact ball bearing, and fix one bearing at one end; 5) While rapidly rotating the bearing by hand, press the other end of the wooden stick (tube) against your ear or an audio amplifier microphone to listen for bearing rotation noise; 6) After fixing the bearing, move the wooden stick laterally 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 and melt an appropriate amount of lubricating 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 less residual grease. Remove the angular contact ball bearings after the grease cools for more residual grease. Determine the amount of residual grease as needed. 9) Wipe the grease off the outside of the bearing with a soft cloth or toilet paper, and assemble the FAG bearing back onto the pulley in its original state; the maintenance work is then complete.

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