Product Manual

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Notes:
1. Horsepowers are nameplate motor horsepowers, and RPMs are
motor (driver) speeds.
2. NEMA minimum sheave diameters are from NEMA MG 1, Part 14,
Table 14-1.
3. Consult LEESON Electric for applications utilizing (1) smaller sheaves
and/or more belts than specified (2) variable speed applications (3)
values outside these recommendations.
4. Selections are based on a 1.4 service factor, 5 to 1 speed ratio
and various Power Transmission Manufacturer’s catalogs used as
reference.
5. These selections are for Narrow V-belt sections only. Consult
LEESON Electric for details on conventional V-belt sections (A, B,
C, D and E), or other belt types.
6. Belt deflected force is per section 4 of this document and is the
average force required to deflect the center of a belt 1/64 of the
belt span distance. Tolerance on this force is ± 0.5 lbf. for forces 6
lbs, and ± 2 lbf. for forces > 6 lbs.