Maximum allowable clearances in plain bearings of electric motors

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ENCYCLOPEDIA OF RADIO ELECTRONICS AND ELECTRICAL ENGINEERING
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Annex 3.1. Maximum allowable clearances in plain bearings of electric motors. Encyclopedia of radio electronics and electrical engineering

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Encyclopedia of radio electronics and electrical engineering / Rules for the technical operation of consumer electrical installations (PTE)

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Table 30

Nominal shaft diameter, mm	Gap, µm, at rotational speed, rpm
Nominal shaft diameter, mm	to 1000	from 1000 to 1500	more 1500
18 - 30	40 - 93	60 - 130	140 - 280
31 - 50	50 - 112	75 - 160	170 - 340
51 - 80	65 - 135	95 - 195	200 - 400
81 - 120	80 - 160	120 - 235	230 - 460
121 - 180	100 - 195	150 - 285	260 - 530
181 - 260	120 - 225	180 - 300	300 - 600
261 - 360	140 - 250	210 - 380	340 - 680
361 - 600	170 - 305	250 - 440	380 - 760

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