The sealed type of bearing

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  • source:JUSTYN CNC Machining
To make bearing maintains good lubricant condition and normal working environment, develop the character of service of bearing adequately, prolong service life, appropriate to rolling bearing must be had sealed, of the leak with preventing lubricant and dirt, hydrosphere or other contamination invade. Of bearing sealed can divide to be taken oneself sealed and adscititious and sealed two kinds. Alleged bearing is taken oneself sealed make bearing itself those who have sealed property unit namely. If bearing takes dust cover, sealing ring,wait. This kind sealed take up the space is very little, installation disassembles convenient, cost is lower also. Alleged bearing is adscititious and sealed property unit, carry the interior such as the lid to create the seal unit that has all sorts of property in installation namely. Following to the Lv of choice take an examination with adscititious and sealed bearing a few kinds of main factors: 1.

Bearing lubricant and sort (grease and lube) ; 2.

The working environment of bearing, take up dimensional size; 3.

Bearing structure advantage of the axis, allow angle deviation; 4.

The circumferential speed of sealing contact surface; 5.

The working temperature of bearing; 6.

Production cost. Adscititious and sealed divide again to be not contact and contact two kinds. Cent narrates as follows: 1) blame contact is sealed blame contact is sealed it is weather strip and the spare parts that its move relatively are not contacted, and those who have suitable space is sealed. Of this kind of form sealed, produce attrition heat scarcely in the job, did not wear away, special apply to high speed and high temperature circumstance. Blame contact is sealed and commonly used have clearance type, all sorts of different configuration such as labyrinth and type of washerbed down the livestock, apply at different situation respectively. The clearance with blame sealed contact with as far as possible small for beautiful. 2) contact is sealed contact is sealed it is sealed the spare parts that moves relatively with its is conterminous touch and those who do not have clearance is sealed. This kind sealed as a result of weather strip and cooperate a direct contact, the attrition in working is bigger, calorific quantity also big, easy cause lubricant and undesirable, interface is easy rub caustic, bring about sealed effect and function to drop thereby. Accordingly, it applies to the working requirement of medium, low speed only. The hairiness felt with sealed and commonly used contact leather bowl is sealed, sealed wait for configuration, apply at different situation. According to bearing working state and working environment are opposite the requirement of sealed degree, often use all sorts of sealed forms integratedly on engineering design, in order to achieve better sealed result. CNC Milling CNC Machining