Standard Motor Catalog

Section TR Technical Reference Guide

Table 27: Limiting Sheave Dimensions for V-Belt Drive (Frames 182T-449T)

V-belt Sheave (inches)**

Conventional

Narrow

3V, 5V, 8V Sections***

Frame

Horsepower at Sync Speed, RPM

A, B, C, and D Sections ††

Min Pitch Dia.

Max Width Inches

Min Outside Dia.

Max Width Inches #

Belt Pull (lbs)**

60 HZ 182T 182T 184T 184T 184T 215T 215T 254T 254T 256T 284T 284T 284T 286T 286T 286T 324T 324T 324T 326T 326T 326T 364T 364T 364T 365T 365T 404T 404T 404T 405T 405T 405T 444T 444T 444T 444T 445T 445T 445T 445T 445T 449T 449T 449T 449T

3600

1800

1200

900 1.0

3.0 5.0 5.0 7.5 -

3.0

1.5

2.4 2.6 2.4 2.6 3.0 3.0 3.0 3.0 3.8 4.4 4.4 4.6 4.4 4.6 5.0 4.4 4.6 5.4 4.6 6.0 5.0 5.0 6.8 5.4 6.8 5.4 7.4 8.2 9.0 9.0 9.0

5.25 5.25 5.25 5.25 5.25

2.4 2.4 2.4 2.4 3.0 3.0 3.0 3.8 3.8 4.4 4.4 4.4 4.4 4.4 4.4 4.4 4.6 5.2 4.6 6.0 5.0 5.0 6.8 5.4 6.8 5.4 7.4 8.2 8.6 8.0 8.4 8.6

2.75 2.75 2.75 2.75 2.75 3.38 3.38 3.38 4.58 4.58 4.58 4.58 4.58 4.58 5.25 5.25 5.25 5.25 5.25 5.25 5.88 5.88 5.88 5.88 5.88 7.25 7.25 7.25 7.25 7.25 7.25 4.0 4.0 4.0 4.0

155 130 155 130 210 310 310 355 370 425 425 565 425 625 705 425 540 715 540 825 620 620 910 690

- - -

-

-

2.0

1.5

- -

- -

5.0 7.5

213T 7.5-10.0

3.0 5.0

2.0 3.0

6.5 6.5 6.5

10.0 15.0 15.0 20.0

-

10.0

-

-

-

7.5

5.0

7.75 7.75 7.75 7.75

15.0

-

-

256T 20.0-25.0

-

10.0

7.5

-

20.0

- - - - -

- - - - -

30.0

- - - -

9.0 9.0 9.0 9.0 9.0 9.0

- -

15.0

10.0

25.0

30.0 40.0

-

30.0

20.0

15.0

40.0

-

-

-

10.25 10.25 10.25 10.25 10.25 10.25 11.5 11.5 11.5 11.5 11.5 14.25 14.5 14.25 14.25 14.25 14.25 16.75 16.75 16.75 16.75 16.75 -

-

40.0

25.0

20.0

50.0 50.0

- - - - -

- -

- -

-

50.0

30.0

25.0

60.0

-

-

-

40.0

30.0

1195 690 1005 1210 1080 1395 1475 1440 1485 1440 1475 1770 1995 1630 1770 1935 2065 1770 1875 2065 1980 1955 1785 1995

60.0

- -

- - - -

- - - - - - - - - - - - - - - - - - - - - -

60.0

-

50.0

40.0

75.0

-

- -

60.0

- - - - - - - - - -

50.0

100.0

-

10.0 10.0 11.5 11.0 10.5 11.0 12.5 12.5 -

-

75.0

60.0

10.0

100.0 125.0

- - - - - - - - - -

8.6

10.5 10.0

- -

100.0

75.0

8.5 8.5 8.5 8.5 8.5 8.5 8.5 8.5 8.5 8.5 8.5 8.5

TECHNICAL REFERENCE GUIDE

9.5 9.5

125.0 150.0

100.0

10.5 12.0 12.0 10.5 13.2 13.5

- -

125.0

- - - - - - - -

150.0 200.0

- - - - - - -

- - - -

150.0 200.0

18.475 169.0 27.75

- - -

150.0 200.0

250.0

-

15.5

12.75

* For the maximum speed of the drive components, see NEMA MG-1-Part 14 Section 14.7.3. † For the assignment of horsepower and speed ratings to frames, see NEMA Part 13. **Sheave dimensions are based on the following: A. Motor nameplate horsepower and speed B. Belt service factor of 1.6 with belts tightened to belt manufacturers’ recommendations C. Speed reduction of 5:1 D. Mounting of sheave on motor shaft in accordance with NEMA MG-1-Part 14 Section 14.7 E. Center-to-center distance between sheaves approximately equal to the diameter of the larger sheave F. Calculations based upon standards covered by the †† and *** footnotes, as applicable

The width of the sheave shall be no greater than that required to transmit the indicated horsepower but in no case shall it be wider than 2(N-W) -0.25. *** As covered by Standard Specifications for Drives Using Narrow V-Belts (3V, 5V, and 8V). # The width of the sheave shall be not greater than that required to transmit the indicated horsepower but in no case shall it be wider than (N-W). †† As covered by Engineering Standards Specifications for Drives Using Multiple V-Belts (A,B,C, and D Cross Sections) See 1.1, The Rubber Manufacturers Association.

TR.31

Data subject to change without notice. 03/24 • www.wolongamerica.com