Code - of rolling bearings

Basic code said bearing of the basic types, structures and sizes, is the foundation of bearing code. The type code in Numbers or letters, the remaining numerically, up to 7 digits or letters. The inner diameter of the inner code said bearing size. When the bearing inner diameter in 20 - Within the radius of a 480 mm diameter symbol multiplied by five is the shaft bearing nominal diameter; For inner diameter to be outside the scope of this bearing, otherwise stated in the internal representation, can see the bearing manual. Diameter series code says there are several different inner diameter of the same kind bearing outside diameter. Width series code according to the change of inner and outer diameter of the same kind bearing width. Basic types of code said bearing type, its corresponding bearing type 20 - see table L, where 0 class don't write. In the code with letters and figures show that the bearing level of tolerance. Sorted by precision is high and low levels are divided into 2, 4, 5, 6 x, and 0, respectively with/P2, / P4, P5 /, / P6x, P6 and/P0, said two of highest level precision, for regular grade level 0, omitted in the code. Other content about the codes of front and rear codes can refer to the information about the bearing standard and professional. Code, for example: 71908 / P5 its symbol meaning is: 7 - Bearing type for angular contact ball bearing, 1 - The width of the series code, 9 - Diameter series number generation, 08 - Inside diameter of 40 mm, P5 - Tolerance level for level 5. 6204 its symbol meaning is: 6 - Bearing type for deep groove ball bearing, the width series code 0 ( Omitted) , 2 - Diameter series number generation, 04 - The inner diameter of 20 mm, tolerance level 0 ( Tolerance grade code/P0 omitted) 。 Bearing on production of 2 mm diameter 30 ~ 40 mm 30 small small-sized bearing, has high precision, small vibration, low noise, high performance, high speed, long life and other excellent features. Widely used in household appliances, electric tools, small-sized electric machinery, fitness equipment, office automation equipment, medical equipment, instrumentation, internal combustion engines, construction machinery, railway vehicle, loading and unloading handling machinery, agricultural machinery, all kinds of industrial machinery, etc. Buy miniature bearings, motor bearings, deep groove ball bearing, please find bearing. Jiaxing bearing co. , LTD. , tel: 0755 - Fax: 814471962708197913612805458-0755 27092086 www。 kaleso。 com info@kaleso. Com on an article: why only one side sealed deep groove ball bearings with grease next up: the basic concept of bearing life -