Bearing as a status of main part of modern machinery and equipment parts and components, its main function is to support the mechanical sliding bearings, to reduce the equipment in the mechanical load coefficient of friction in the process of transmission.Thrust angular contact ball bearing as a member of the family of bearing, mainly used for precision machine tool spindle, commonly used together with the double row cylindrical roller bearing, it can be subject to bi-directional load and have high precision, good rigidity, low temperature, high speed, convenient installation.Below for your introduction about buying pushed animals bearing quality.
To identify the quality of the thrust angular contact ball bearing, has the following methods:
Quality distinguish one: to identify the internal and external packaging
Packaging: normal manufacturer production composite bearing thrust angular contact ball bearing outer packing in the general case has its own special design to design personnel outsourcing, and arrange production with the conditions of the factory production, therefore, the packing of the product no matter from lines and colors should be very clear, unambiguous.
The inner packing: manufacturer in after completion of manufacturing and the inspection, to thrust angular contact ball bearings for cleaning and antirust processing, into the inner packing.Bearing the inner packing by antirust period is divided into three categories:
The 1) short antirust period: rust phase 3 ~ 6 months, suitable for bulk shipments to the same subscriber, bearing will be put into use in the short term.By mutual agreement, with easy to use for the principle, the simple packaging.
(2) general antirust packing: antirust period for one year, suitable for general purpose bearings.
The long antirust period: rust period of two years, is applicable to special and precision bearing.
Bearing the inner packing material for nylon fastening belt or woven plastic fastening tape, waterproof high strength plastic tape, sack, etc.
Quality distinguish two: thrust angular contact ball bearing seal is the words clearly
Every thrust angular contact ball bearing products in body bearing products printed with the brand, label, etc.The font is very small, normal manufacturer production printing products are adopted the steel seal technology.Before without overheating treatment of word, font concave deeper, very clear.And usually, font fuzzy counterfeit products, because of printing technology coarse, font float to the surface, some fake products print can be easily erased by hand.
Quality distinguish three: if there is a hybrid ring thrust angular contact ball bearing
The thrust angular contact ball bearing body with his left hand, right hand small reciprocating toggle coat to make it spin, bearing ring if there is a noise in the process of operation.Production conditions and backwardness of most of the counterfeit products, fully manual mill operation, bearing the body in the process of production inevitably mixed into impurities, dust, sand and so on bearing rotation will be mixed ring or not smooth phenomenon.This is to determine whether a product from the production standard strictly, and use the brand of machine operation of formal manufacturers product key.
Quality distinguish four: thrust angular contact ball bearing surface is smooth
Thrust angular contact ball bearing surface whether there is a cloudy oil stains which need we should pay special attention to when buying imported bearings.Due to domestic antirust technology, there is still a gap with foreign advanced manufacturing countries, therefore the antirust processing was carried out on the bearing body and is easy to leave the thick oil stains, contact with the hand feeling sticky thick, and imported from abroad on the bearing of almost can't see any sign of the anti-rust oil.According to the personage inside course of study introduces, particularly careful people can smell a special kind of imported bearing, this is the flavor of the anti-rust oil.
Quality distinguish five: thrust angular contact ball bearing chamfer is uniform
So-called thrust angular contact ball bearing chamfer, namely horizontal plane and vertical plane junction, fake bearing products because of the limitation of production technology in the area of the fringes is handled in guanzhou, as we can easily identify.
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