Bombas

V C

ELECTRIC MOTOR INFORMATION
Dimensions for AC Motors
(Based on Nema MG1-11.01)

“C” Face Polyphase 60 Hertz Electric Motors
HP
1

System for Designating Frames Fractional-Horsepower Motors The frame number for fractional-horsepower motors shall be the “D” dimension in inches multiplied by 16. The letters C, G, H, J, K, M, N, Y and Z shall immediately follow the frame number todenote variations as follows: C Face Mounting G Gasoline Pump Motors H Indicates a frame having an “F” dimension larger than that of the same frame without the suffix letter H
(dimensional diagram must be obtained from the manufacturer)

/4 /3 /2 /4

1

1

3

1 11/2 2 3 5 71/2 10 15

RPM 1200 1800 3600 1200 1800 3600 1200 1800 3600 1200 1800 3600 1200 1800 3600 1200 1800 3600 1200 18003600 1200 1800 3600 1200 1800 3600 1200 1800 3600 1200 1800 3600 1200 1800

T Frame 56C 56C 56C 56C 56C 56C 56C 56C 56C 56C 56C 56C 145T 56C/143T 56C 182T 56C/145T 143T 184T 145T 145T 213T 182T 145T 215T 184T 182T 254T 213T 184T 256T 215T 213T 284T 254T

U Frame

HP 20

25 30 40 184U 182U 184U 184U 184U 213U 184U 184U 215U 213U 184U 254U 215U 213U 256U 254U 215U 284U 256U 254U 324U 284U 50 6075 100 125 150 200*

RPM 1200 1800 3600 1200 1800 3600 1200 1800 3600 1200 1800 3600 1200 1800 3600 1200 1800 3600 1200 1800 3600 1200 1800 3600 1200 1800 3600 1200 1800 3600 1200 1800 3600

T Frame 286T 254T 254T 324T 284T 256TS 326T 286T 286TS 364T 324T 324TS 365T 326T 326TS 404T 364TS 364TS 405T 365TS 365TS 444T 405TS 405TS 445T 444TS 444TS 445T 445T 445TS 445TS

U Frame 326U 286U 286U364U 324U 324U 365U 326U 326US 404U 364U 364US 405U 365U 365US 444U 405US 405US 445U 444US 444US 445US 445US

J K M N Y

Jet pump motors Sump pump motors Oil burner motors Oil burner motors Special mounting dimensions (dimensional diagram
must be obtained from the manufacturer)

Z All mounting dimensions are standard except the shaft extension (dimensional diagram must be obtained from themanufacturer)

Integral-Horsepower Motors The system for numbering the frames of integral-horsepower motors shall be as follows: 1. The first two digits of the frame number are equal to four times the “D” dimension in inches. When this product is not a whole number, the first two digits of the frame number shall be the next higher whole number 2. The third digit of the frame number is obtainedfrom the value of 2F (see dimensions from manufacturer). The letters A, C, CH, D, E, HP, HPH, JM, JP, LP, LPH, P, PH, R, S, T, U, V, VP, X, Y or Z shall immediately follow the frame number to denote variations as follows: A Industrial direct-current motor or generator C Face mounting on drive end CH Face mounting dimensions are different from those for the frame designation having the suffix letterC. (The letters CH
are to be considered as one suffix and should not be separated.)

*Open Drip Proof

NEMA KEYSEAT DIMENSIONS
NEMA SHAFT DIA. /8 /8 11/8 13/8 15/8 17/8
7 5

KEYSEAT NEMA DIMENSIONS SHAFT (R) (S) (U) /64 /64 63 /64 113/64 113/32 119/32
49 33 3 3

KEYSEAT DIMENSIONS (R) (S) 127/32 21/64 23/16 27/8 229/64
1 5

D Flange mounting on drive end. E Shaft extensiondimensions for elevator motors in frames larger than the 326U frame S Standard shaft for direct connection (see dimension tables) T Included as part of a frame designation for which standard dimensions have been established (see dimension tables) U Previously used as part of a frame designation for which standard dimensions had been established V Vertical mounting only X Wound-rotor crane motors withdouble shaft extension Y Special mounting dimensions (dimensional diagram must be
obtained from the manufacturer)

/16 /16 1 /4 5 /16 3 /8 1 /2

21/8 23/8 21/2 33/8 27/8

/2 /8 5 /8 7 /8 3 /4

Z All mounting dimensions are standard except the shaft extension(s). Also used to designate motor with double shaft extension. (dimensional diagram must be obtained from the
manufacturer)

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