JIS-B-1518-1992-R2007-ENG.pdf
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1、J I S 8x1518 92 4933608 0530367 043 UDC 621.822.6.001.24 ,JIS a a I h a Printed in Japan 13 S JAPANESE INDUSTRIAL STANDARD i; Dynamic load ratings and rating life for rolling bearings JIS B 1 5 1 8 - 1 9 9 2 Translated and Published by Japanese Standards Association Copyright Japanese Standards Asso
2、ciation Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 05/16/2007 00:47:08 MDTNo reproduction or networking permitted without license from IHS -,-,- JIS BVL5L8 92 4933608 0530368 TBT In the event of any doubt arising, the original Standard
3、in Japanese is to be final authority. Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 05/16/2007 00:47:08 MDTNo reproduction or networking permitted without license from IHS -,-,- JAPANESE INDUSTRIAL
4、STANDARD Dynamic load ratings and rating life for rolling bearings 1 . Scope J I S B 1518-1992 This Japanese Industrial Standard specifies the methods of calculating the dynamic load ratings and rating life for rolling bearings (hereafter ref erred to as the *bearings*). Remarks 1 . This Standard ap
5、plies to the bearings manufactured in accordance with high manufacturing techniques, using the high quality hardened bearing steel of ordinary use, with conventional design in the shapes of rolling contact surf aces. 2. This Standard is not applicable as it is, in the case where any discontinuous pa
6、rts exist in the contact surfaces of the rolling elements and the raceway of the bearing ring (bearing washer) (for example, filling slot ball bearings and the l i k e ) . 3. Under the working conditions where the load distribution inside a bearing is not normal (for example, in the case where misal
7、ignment, deformation of shaft or housing, centrifugal force acting on rolling elements, and preload or radial internal clearance are particularly large), the actual bearing life becomes smaller than the calculated value, so that, in some cases, this Standard may not be applicable without modificatio
8、n. 4 . In the case of the construction where the rolling elements roll directly along the outer peripheral surface of the shaft or inner surface of the housing, this Standard is not applicable as it is, unless the raceways thereof are equal in all respects with the raceway of the bearing. 5 . Double
9、 raw radial bearings and double direction thrust bearings to which this Standard is applied shall be the bearings of the symmetrical type. 6 . The standards cited in this Standard are as given in the following: JIS B 0104-Rolling bearings - Vocabulary JIS B 1519-Static load ratings for rolling beari
10、ngs Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 05/16/2007 00:47:08 MDTNo reproduction or networking permitted without license from IHS -,-,- JIS B+L518 92 4933bO O530370 638 2 B 1518-1992 7 . Thi
11、s Standard is that which has been prepared by altering the style of format without changing the technical contents of IS0 281: 1990 (Rolling bearings - Dynamic load ratings and rating life). bearing characteristics factors and service condition factors have been transferred into Informative Referenc
12、e from the text of this Standard. However, the contents supplementing the 2, Definitions For the purpose of this Standard, the following definitions apply, and others are in accordance with JIS B 0 1 0 4 . ( 1 ) roller diameter applicable in the calculation middle of the roller length. The diameter
13、at the Remarks 1 . For a tapered roller, this diameter is taken as the arithmetical mean value of the diameters at the large end and the small end of the roller, where it is assumed that no chamfering is processed. 2. For an asymmetrical convex roller, this diameter is taken as the diameter at the p
14、oint of contact between the roller and the raceway of the bearing ring (or bearing washer) at zero load. (2) ordinary service conditions The conditions of the bearing which is assembled appropriately, lubricated normally without mingling of foreign substances, not subjected to excessive load, not be
15、ing exposed to an extreme temperature, and being rotated at a speed neither particularly low speed nor high speed. (3) reliability factor The life correction factor for the reliability i100-n) %, when the breakage probability is n %. 3. Quantitative symbols The quantitative symbols to be used in thi
16、s Standard and meanings thereof shall be in accordance with the following: C, : basic dynamic radial load rating (NI Ca : basic dynamic axial load rating (N) Co, : basic static radial load rating (N) (See JIS B 1519) D, : ball diameter (mm) D , , : roller diameter to be used in calculation (mm) D, :
17、 pitch diameter of bail set or roller set (mm) F, : radial load applied to bearing. Namely, radiai component of actual bearing load (NI Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 05/16/2007 00:47
18、:08 MDTNo reproduction or networking permitted without license from IHS -,-,- J I S B*1518 72 W 4733608 0510371 574 l e 3 B 1518-1992 Fa : axial load applied t o bearing. bearing load (N) Namely, axial component of actual LIO : basic rating l i f e (lo6 rev.) L, : adjusted rating l i f e (lo6 rev.)
19、Lwe : effective length of roller (mm) P, : dynamic equivalent radial load (N) P, : dynamic equivalent axial load (NI X : radial load factor Y : axial load factor z : number of rolling elements of a single row bearing, or number of rolling elements per row of a multi row bearing having equal number o
20、f rolling elements per row a, : reliability factor (See 8.2) a 2 : bearing characteristic factor (See Informative Reference 1) u3 : service condition factor (See Informative Reference 2) b, : rating factor according t o materials t o be used ordinarily and manufacturing qualities ( I t differs depen
21、ding on types of bearing. ) e : l i m i t value of 5 for selecting factors X and Y f, : a factor which depends on the geometry of each part of bearing, working accuracy and material F r f o : a factor which depends on the geometry of each part of bearing and stress level t o be applied (See JIS B 15
22、19) i : number of rows of rolling elements in a bearing a : nominal contact angle ( O ) 4. Radial ball bearings 4.1 Basic dynamic radial load rating The basic dynamic radial load rating (c,) for the radial ball bearings shall be obtained from the - following formulas : For ball diameter 5 25.4 mm 2
23、C,=b, f,(i cos a z“ DWl.* For ball diameter 25.4 mm 2 C,=3.647 b,f,(i C O S L Y ) . z“ Dw1.4 Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 05/16/2007 00:47:08 MDTNo reproduction or networking permit
24、ted without license from IHS -,-,- J I S B*3538 92 4933608 0530372 400 Deep groove bail bearing, angular contact bail bearing, self-aligning ball bearing, magneto ball bearing 4 B 1518-1992 1 . 3 Where, the values of 6 , and f, shall be as given in Tables 1 and 2. Filling slot ball bearing Ball bear
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