Everything is not perfect

Everything is not perfect, roughness measuring instrument also has some disadvantages. For example, the equipment is more complex, requires a relatively high cost of inputs, the sensor components (induction loop) poor interchangeability and adaptability, not in some complex shape of the workpiece applications.
Although there are some shortcomings, but it's comprehensive index is good, obvious advantages outweighed the disadvantages. Therefore, induction heating is a major process of metal machining. Is to replace coal heating, ideal for heating the oil heating, gas heating and electric heating, electric oven heating, etc.

Double row angular contact ball bearings can withstand the same time

Double row angular contact ball bearings can withstand the same time characterized by joint load radial and axial load, limiting the axial displacement of both axes. Compared with the two-way thrust ball bearings, these bearings speed limit is higher, the contact angle of 32 degrees, rigid, can withstand the overturning moment, widely used in cars in the front wheel hub (some models also use the same size double row tapered roller bearings).
Single row angular contact ball roughness measuring instrument: machine tool spindles, high frequency motors, gas turbines, centrifuges, small car front wheel, differential pinion shaft, booster pumps, drilling platforms, food machinery, dividing head, fill welder, low-noise cooling towers, electrical equipment, coating equipment, machine slot board, arc welding machine
Double row angular contact ball bearings: pump, blower, air compressor, various types of transmission, fuel injection pumps, printing machinery, planetary reducer, extraction equipment, cycloid reducer, food packaging machinery, welding machines, electric iron, square box, gravity gun, wire strippers, axle, test analysis equipment, fine chemical machinery