GB/T 4772.1–1999 Dimensions and output series for rotating electrical machines—Part 1: Frame numbers 56 to 400 and flange number 55 to 1080 (Text of Document is in English )

01/09/1999

61P

$360.00 USD

Contents
IEC FOREWORD
1 Scope
2 Normative References
3 Letter-symbols for dimensions
4 Designation of machines
5 Location of the terminal box
6 Position of holes in the mounting flange
7 Fixing dimensions
8 Shaft extension, keys and keyways dimensions. Greatest permissible torques on continuous duty for a.c. motors
9 Tolerances for flange-mounted machines
10 Preferred rated output values
11 Dimensional sketches
Annex A (Informative) Guide for the selection of dimensions
Annex B (Informative) Reference planes and symbols for mounting dimensions of rotating electrical machines
Annex C (Informative) General requirements on tolerances and limit values for mounting dimensions