YOCH Bearing

It is very suitable to lubricate the FAG bearings in the reduction box with lubricating oil, because the oil achieves the purpose of lubrication of the gears and FAG bearings at the same time by splashing. 6) The grease in the FAG bearing is gradually contaminated by products of product wear, abrasives, products that penetrate through the sealing device from the outside and age themselves. If not replaced in time, it will cause accelerated wear of the FAG bearing, and when using liquid lubricants , can be filtered to ensure its normal operation.

The ambient temperature during measurement is specified as 20°C. The temperatures of bearings, gauge blocks, standard parts and measuring instruments must all be the same. The above method of placing them on the same metal plate can achieve the necessary temperature balance as quickly as possible, otherwise It takes hours or even days to achieve this balance. In order to obtain correct measurement results, foreign countries rely on mechanization of measurement to avoid human hands coming into contact with these objects, or wear insulating gloves to operate.

The phenomenon of size or shape change of INA stainless steel bearings or components due to stress is called deformation. Due to harsh working conditions, the mechanical equipment at the production site is often overloaded and it is very common for some bearings to deform. Their deformation will accelerate the wear and even breakage of other related parts, and may also cause damage to the system series bearings or the entire equipment, causing equipment accidents, so the harm of deformation is quite serious.

There are two ways of axial preload for bearings: one is constant pressure preload and the other is positioning preload. Under constant pressure preload, the radial stiffness of the bearing increases slightly as the rotational speed increases, while the axial and angular stiffness decrease rapidly. Under positioning preload, the radial, axial and angular stiffness of the bearing increase rapidly with the increase of rotation speed, but the increase of axial and angular stiffness is relatively gentle.

Dental drill bearings are special bearings for dental handpieces. There is a key component on the dentist's handpiece, called the high-speed dental drill assembly. It consists of a shaft, turbine, spring chuck, spring washer, back cover, shell, rolling bearing, and rubber positioning ring. , the rolling bearing used is called a dental drill bearing.

Pollutants in lubricating oil include various substances mixed in the working medium that are harmful to the surface life of internal combustion engine parts, such as solid particles, water, exhaust gas, diesel (gasoline) oil and polluted energy.

In the surface process, such as grinding a surface on a vertical single-head grinder, the following factors may cause burns if the operating specifications are correctly followed. a. The grinding wheel shaft moves, increasing the instantaneous grinding amount and causing burns; at this time, the grinding wheel shaft bearing must be tightened or the bearing must be replaced. b. The disk on the workbench jumps or rotates unevenly, which increases the amount of instantaneous grinding and causes burns; various components of the disk reducer, such as worm gears, worms, etc., must be inspected and worn parts replaced.

During the grinding process of the bearing ring, due to the cutting, scoring and frictional effects of the abrasive grains on the workpiece, the metal surface is plastically deformed, and the relative displacement between the metal molecules inside the workpiece generates internal friction and heat; when the grinding wheel is cutting, relative to the workpiece The speed is very high, causing severe external friction with the workpiece surface to generate heat. And because the cutting of each abrasive is instantaneous, the heat is generated instantaneously and cannot be dissipated in time, so the instantaneous temperature in the grinding area is relatively high. High, generally reaching 800~1500℃. If the heat dissipation measures are not good, it is easy to cause burns on the surface of the workpiece, that is, secondary quenching and high-temperature tempering will occur on the surface of the workpiece (generally tens of microns to over microns), which will cause damage. The structure on the surface of the workpiece has been removed, and severe burns can be seen with the naked eye. A severe burnt yellow or black oxide film appears on the surface. Minor burns can only be observed after being etched with dilute acidic solution. The burned area will appear black. Burns can reduce the service life of the workpiece.

Magnesium alloy with a density of 36% is lighter than aluminum alloy, 73% lighter than zinc alloy, and 77% lighter than steel. It is recognized as the structural metal material with the smallest mass. The machining of small batches of magnesium alloy parts can be carried out on small manually operated machine tools; when processing magnesium alloy parts in large batches and with high efficiency, it will be more economical to use dedicated large-scale automated machining centers or computer numerical control machine tools. Compared with those metal materials with poor machining properties, magnesium alloys with good cutting properties have very outstanding advantages. For magnesium alloys, powerful cutting can be performed at high cutting speeds and large feeds, so that the number of machining hours can be reduced. Therefore, when completing the same task, if magnesium alloy is used as raw material, the number of processing equipment can be reduced, infrastructure investment can be saved, the floor space can be reduced, and labor costs and management expenses can be reduced.