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Calculation of Upper (es) and Lower (ei) Deviation For Shaft:


The deviations and fundamental tolerances provided by the ISO System. The limits of tolerance for holes or shafts are designated by the appropriate letter indicating the fundamental deviation. And Tolerance grade is dominated by followed by a suffix number. For example, if the hole deviation "H" and tolerance grade IT7,; designation would be H7, if Shaft deviation "k" and tolerance grade IT6; designation would be k6.If the basic size 50mm, tolerance designation would be 50H7 and 50k6.


The Upper and Lower deviations for Shaft are donated by "es" and "ei". The Upper and Lower deviations for Hole are donated by "ES" and "EI". The Fundamental Deviations can be calculated with the help of some formulas given below.


Calculation Fundamental Upper and Lower Deviation Of Shaft:


es=ei+IT,                      ei=es-IT


Calculation Fundamental Upper and Lower Deviation Of Hole:


ES=EI+IT,                     EI=ES-IT


Table Below: Fundamental Upper Deviation For Shaft "a" to "js" (0 mm To 500 mm)


OverUp to
Incl.
FUNDAMENTAL UPPER DEVIATION (es ) IT01 to IT16
abccddeef ffgghjs
03-270-140-60-34-20-14-10-6-4-20ITn/2
36-270-140-70-46-30-20-14-10-6-40ITn/2
610-280-150-80-56-40-25-18-13-8-50ITn/2
1014-290-150-95 -50-32 -16 -60ITn/2
1418-290-150-95 -50-32 -16 -60ITn/2
1824-300-160-110 -65-40 -20 -70ITn/2
2430-300-160-110 -65-40 -20 -70ITn/2
3040-310-170-120 -80-50 -25 -90ITn/2
4050-320-180-130 -80-50 -25 -90ITn/2
5065-340-190-140 -100-60 -30 -100ITn/2
6580-360-200-150 -100-60 -30 -100ITn/2
80100-380-220-170 -120-72 -36 -120ITn/2
100120-410-240-180 -120-72 -36 -120ITn/2
120140-460-260-200 -145-85 -43 -140ITn/2
140160-520-280-210 -145-85 -43 -140ITn/2
160180-580-310-230 -145-85 -43 -140ITn/2
180200-660-340-240 -170-100 -50 -150ITn/2
200225-740-380-260 -170-100 -50 -150ITn/2
225250-820-420-280 -170-100 -50 -150ITn/2
250280-920-480-300 -190-110 -56 -170ITn/2
280315-1050-540-330 -190-110 -56 -170ITn/2
315355-1200-600-360 -210-125 -62 -180ITn/2
355400-1350-680-400 -210-125 -62 -180ITn/2
400450-1500-760-440 -230-135 -68 -200ITn/2
450500-1650-840-480 -230-135 -68 -200ITn/2


Table Below: Fundamental Lower Deviation For Shaft "j" to "zc" (0 mm To 500 mm). Fundamental Deviation IT01 to IT16 for "m" to "zc".


OverUp to
Incl.
FUNDAMENTAL LOWER DEVIATION (ei)
j5/j6j7k4-k7 (incl.)other kmnpr st uvxyz zazbzc
03-2-4002461014  18  20 26324060
36-2-41048121519  23 28  35425080
610-2-510610151923  28 34  42526797
1014-3-610712182328  33  40 506490130
1418-3-610712182328  3339 45 6077108150
1824-3-820815222835  4147 54637398136188
2430-3-82081522283541 4855 647588118160218
3040-4-102091726344348 6068 8094112148200274
4050-4-102091726344354 7081 97114136180242325
5065-5-1220112032415366 87102122 144172226300405
6580-7-1220112032435975 102120146 174210274360480
80100-9-1530132337517191 124146178 214258335445585
100120-9-15301323375479104 144172210 254310400525690
120140-11-18301527436392122 170202 248300365470620800
140160-11-183015274365100134 190228 280340415535700900
160180-11-183015274368108146 210252 3103804656007801000
180200-13-214017315077122166 236284 3504255206708801150
200225-13-214017315080130180 258310385 4705757409601250
225250-13-214017315084140196 284340425 52064082010501350
250280-16-264020345694158218 315385475 58071092012001550
280315-16-264020345698170240 350425525 650790100013001700
315355-18-2840213762108190268 390475590 730900115015001900
355400-18-2840213762114208294 435530660 8201000130016502100
400450-20-3250234068126232330 490595740 9201100145018502400
450500-20-3250234068132252360 540660820 10001250160021002600

Table Below: Fundamental Upper Deviation For Shaft "d" to js; Lower Deviation For Shaft "k" to "u" (500 mm To 3150 mm)



OverUp to
Incl.
FUNDAMENTAL UPPER DEVIATION (es) FUNDAMENTAL LOWER DEVIATION (ei)
deefffggh jskmnprs t u
500560-260-145 -76 -220ITn/2 0264478150280400600
560630-260-145 -76 -220ITn/2 0264478155310450660
630710-290-160 -80 -240ITn/2 0305088175340500740
710800-290-160 -80 -240ITn/2 0305088185380560840
800900-320-170 -86 -260ITn/2 03456100210430620940
9001000-320-170 -86 -260ITn/2 034561002204706801050
10001120-350-195 -98 -280ITn/2 040661202505207801150
11201250-350-195 -98 -280ITn/2 040661202605808401300
12501400-390-220 -110 -300ITn/2 048781403006409601450
14001600-390-220 -110 -300ITn/2 0487814033072010501600
16001800-430-240 -120 -320ITn/2 0589217037082012001850
18002000-430-240 -120 -320ITn/2 0589217040092013502000
20002240-480-260 -130 -340ITn/2 068110195440100015002300
22402500-480-260 -130 -340ITn/2 068110195460110016502500
25002800-520-290 -145 -380ITn/2 076135240550125019002900
28003150-520-290 -145 -380ITn/2 076135240580140021003200

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