1、DEUTSCHE NORMEN January 1970 mX: 621.824 d Tolor- sono1 1 ano. 6 7 8 9 10 11 12 14 16 19 20 22 24 25 28 30 32 35 38 40 42 45 - - - - - - - - - - - k61 - - - - - - - - - - Cylindrical Shaft .Eude Dimensions Horiinal fPraneiiis8ible Torques 1 long mhorl 16 - 20- 23 15 30 18 a28 50 36 6042 8050 - 110 8
2、2 DIN I 748 t Sheet 1 Zylindrische Wellenenden; Abmessungen, Ilemdrehmonente Por connection with IBO Recommendation IS/E 775-1969, see Explanations Dimensions in mm Cylindrical shaft ends are intended to take pulleys, couplings and gears. Sizes and betails such k8 keys, chamfer, centre hole and enrf
3、ace quality, which are not speci- fied, are to be selected ae appropriate. With ehait shoulder Without shaft shoulder Designation of a crlinbrical shaft end of diameter d = 250 M and length3) 1 = 410 mm: Shaft end 250 x 410 DIB 748 I d 1481- 1701 - 140 - 1 70 - 210 - 250 300 350 - 1 mil -1 1-13001 m
4、6 470 - 550 650 Beriee 1 is to be preferred. Centre holes according to DIB 332 Parallel keys according to DIB 6885 Sheet I For transmissible torques, see page 2 For Footnotes, see page 2 Bor cylindrical shaft ends for electrical nachines, see DIB 42946 For shaft ends for campreseed air rotors, .see
5、DIB 20092 Continued on page 2 Erplanations on page 3 DIB 748 B1. 1 engl. Preiagr. fnvorkouf der Normbltter durd Beuth-Vertrieb GmbH, Bodin 30 und Kln Page 2 DUV 748 Sheet 1 M Column kP m al b i c Transmissible torques (reference values) The values of the transmissible torques are calculated from the
6、 following formulae and rounded off to preferred numbers of the B 80 series. Column a: Transmission of a pure torque 4 M I M I 6 10-5 63.5 in kp m or il I 58.8399 10-5 - d3.5 in N m M = 2.8 10-5 10-3 63 in kp m or M 10-3 a3 in I m Column b: Simultaneous transmission of a torque and of a correspondin
7、g known bending moment: Column c: Simultaneous transmission of a torque and of an unknown bending moment: 63.5 in kp m or M I 27.45862 10-5 63.5 in N m d Diameter of the shaft end in mm M Transmissible torque The formulae are not applicable to the spaces containing a dash. Al1 values assume a materi
8、al having a tensile strength of 50 Up to 60 kp/d. It is recommened that in each case the stresses arising be rechecked. d M kP Column a Iblc - d - 6 7 8 9 10 11 12 14 16 19 20 22 24 25 28 30 32 35 38 40 42 45 48 50 55 60 65 70 75 80 85 90 95 - - - - - - - - - - - M Nm Column b C 0,307 0,145 033 0.25
9、 0,85 0,4 1,28 0,6 1,85 0,875 29 122 335 1,65 6 2.8 d M Nm Column a bc 100 7750 5800 2720 110 10300 8250 3870 120 13200 11200 5150 130 17000 14500 - 140 21200 19000 - 150 25800 24300 - 160 31 500 30700 - 170 37500 37500 - d 10 11 12 14 16 19 20 22 24 25 28 30 32 35 38 40 42 48 50 55 60 65 70 75 80 8
10、5 95 45 a 6- 7- 8- 9- - - - - - - - - - - 206 250 325 425 487 560 8% 9% 1280 1650 212C 26SC 325C 387C 47X 9056Oc 6500 7111 21,2 1 9J5 1200) 61 500 29 13.6 220 82Mo 40 46,2 69 87,s 109 150 200 236 280 355 4M 515 730 975 1280 1700 2120 2650 3350 4120 4870 18,s 240 106000 21,2 250 118000 31,5 260 13600
11、0 40 280 170000 50 300 206000 69 320 250000 923 340 300000 112 360 355000 132 380 425000 170 400 487000 212 420 560000 243 440 650000 345 450 710000 462 460 750000 600 480 850000 800 500 950000 1000 530 1150000 1250 560 1360000 1550 600 1650000 1900 630 19ooooO 2300 -$ -I- I I) Tolerance zone k6 and
12、 m5 for d up to 500 mm according to DIN 7160, for d = 5% up to 630 mm according to DIN 7172 Sheet 2 (Preliminsmy Standard) Tolerance zone for the aseociated borer E7 for d up to 500 mm according to DIN 7161 for d = 5% up to 630 mm according to DIN 7172 Sheet 2 (Prelimlnuy Standard) 2, Fillet or unde
13、rcut according to DIN 509 3) If other tolerance zones are necessary, the tolerance zone is to be included in the designation, *g- 4, Up to d = 30 mm, IS0 Recommendation R 775 gives tolerance zone j6 instead of k6. ehaft end 250 r6 x 410 DIN 748 DIN 748 Sheet 1 Page 3 d 1 long short ExDlanations 18 5
14、6 63 71 125 40 110 140 140 210 28 82 105 105 165 Thio Standard conforms to IS0 Recommendation ISO/R 775-3969 Cylindrical aiid 1/10 conicil ahaft ends Bouts darbre cylindriques et conlquea i conicit6 1/10 The following mhaft end dianeters and lengths have not been taken over from the IS0 Recommendati
15、on, be- eaune they have not hitherto been wed: For diameters d up to 50 mm, tolerance eone k6 hm been stipulated, while the IS0 Recommendation gives tolerance sone j6 up to 30 P dueter. It is feared that, otherwise. too loose a fit would result. Addi- tionally, the radium r hM been included. The ISO
16、/TC 14 Committee intends to specify the valuee for it, o.ad also for the undercut, at a later date. The transmissible torques are no more than reference aluee. They ue based in part on empirically estab- lished formulae, ci. also Rentzsch, E.: Shafts, Commente on Draft Standard DIN 748 Cylindrical shaft ends. DIN-Mitteilungen (DIN Neue) Vol. 45 (1966) number 6 pp. 391-394. It im proposed to issue continuation sheets for eleotrical engineering and machine construction, they will include a selection of shaft ende together dth additional data.
