1、 , () INTERSTATE COUNCIL FOR STANDARDIZATION, METROLOGY AND CERTIFICATION (ISC) 32305null 2013 (ISO 15312:2003) (ISO 15312:2003, MOD) 2014 32305null2013 , 1.092 . 1.22009 . -, . , , , 1 ( ) 2 307 - 3 , ( 27 2013 . 59-) : ( 3166) 00497 ( 3166) 00497 BY KG MD - RU UZ 4 ISO 15312:2003 Rolling bearings
2、Thermal speed rating Calculation and coefficients ( . . ) , ISO , , . 1, 3, 4, 5, 6, 7 , . . , , . , , . . ISO/TC 4/SC 8 ISO/TC 4 (ISO). (en). , , , , . (MOD) 5 31 - 2013 . 1302- 323052013 1 2015 . 6 II 32305null2013 - , null . () - - . , null III 32305null2013 , 2014 -, - IV 32305null2013 Rolling b
3、earings. Thermal speed rating. Calculation and coefficients null 2015null07null 1 1 , , - . , , , , -. - . . , - , . 1 f0r f1r. f0r , , f1r - . 2 . , . 2 . 188542013 (ISO 76:2006) . 248102013 . 2495581 . 252562013 . . ISO 15241:2012 . * , 1 , - . (), - () . , , , , . * , 15241. . 1 32305null2013 3 2
4、4955, 25256, : 3.1 (thermal speed rating): , , - , , , . 1 , - - . 2 , - , . 3.2 (reference conditions): , - : a) , . . - , , . . ; b) , , : - ; - , , ; - ; c) , , - , - . . . 3.3 (heat emitting reference surface area): ( ) ( ) , . 3.4 (reference load): , -, , . 3.5 (reference heat flow): , - , . 3.
5、6 (reference heat flow density): . 3.7 (reference ambient temperature): . 3.8 (reference temperature): - . 4 , ISO 15241, 1. 1 - - Ar 2 B C0a 18854 C0r 18854 d 2 32305null2013 1 - Ar 2 B C0a 18854 C0r 18854 d dm dm= 0,5 (D + d) d1 - - D D1 - f0r , , f1r , , - M0 , M0r , , - nr M1 , M1r , , - nr nr -
6、1 Nr - nr P1r qr /2 T Ar C r C r ( r ) 2/ r 5 5.1 . 5.2 , 5.2.1 r 70 C. Ar 20 C. 5.2.2 5.2.2.1 - 0 45 , 5 % C0r(P1r= 0,05 C0r). - , - . 5.2.2.2 - 45 90 , 2 % - C0a(P1r= 0,02 C0a). 3 32305null2013 5.2.3 5.2.3.1 : , r r= 70 C: a) - r= 12 2/ (32 2/ 40 C). b) - r= 24 2/ (68 2/ 40 C). 5.2.3.2 : , -, . . - . 5.2.4 5.2.4.1 : - , 1000 ; - , 24810; - , ; - - , - ; - , , , - , . 5.2.4.2 : - ; , . - ; - -
