Bearing size and clearance measurement method have?

Bearing size and clearance measurement method have? Bearing is mainly the micro class bearing, the size of the model is more, the author put a piece of the product model in the following figure size, probably, want more can click on our company website miniature bearing! A kind of miniature bearing and rolling bearing, today should not only know its size and its clearance, the method of measuring clearance! So-called rolling bearing clearance, is a fixed ring, a ring along the radial or axial activity. Along the radial activity called radial clearance, axial clearance along the axial activity is called. In general, the larger the radial clearance, axial clearance is bigger, and vice versa. According to the bearing of the state, the clearance can be divided into the following three: first, the original clearance: bearing before installation clearance of free state. The original clearance is processing, assembling the identified by the manufacturer. Second, installation clearance: also called cooperate clearance, bearing and shaft and bearing seat installed but not yet work clearance. Due to the interference installation, or make inner ring increases, or the outer shrink, or both, make installation clearance is smaller than the original clearance. Three, work clearance, bearing clearance, when the job is state the temperature rise of the inner ring at work, thermal expansion, reduce bearing clearance; At the same time, as a result of the action of load, rolling element and raceway contact produce elastic deformation, the bearing clearance increases. Bearing clearance than installation clearance big or small, depends on a combination of these two factors. Radial clearance measurement: 1, with a feeler check and confirm the parts, rolling bearing load with 180 ° roller and outside ( ) Between circle into feeler, elastic fitting for feeler thickness is the radial clearance of the bearing. This method is widely used in self-aligning bearings and cylindrical roller bearings. , 2, with a dial gauge to check the dial indicator to zero, then the top roller bearing outer ring, the reading of the dial gauge is bearing radial clearance. The axial clearance measurement: ( 1) , with a feeler check, operation method and check out the radial clearance with a feeler, the same but the axial clearance should be c = lambda/( 2 sinβ) Type in the c - — The axial clearance, mm; λ— — The thickness of the feeler, mm; β— — Bearing cone Angle, °) 。 ( 2) , with a dial gauge inspection, with jack channeling shaft axis in two extreme position, the difference of the dial gauge readings for bearing axial clearance. But on the levers are not too large, otherwise shell elastic deformation occurs, even if the deformation is small, also affect the accuracy of the measured axial clearance.