The Mechanical Power Transmission Association was founded in 1933 as the Multiple V-Belt Drive and Mechanical Power Transmission Association. In 1961 the Association name was changed to Mechanical Power Transmission Association.
Bore and Keyway Tolerances for V-Belted Sheaves (B1-2000) Balancing Power Transmission Pulleys (B2-1998) Sheave Arm Stress Formula (SAS-79) Standard Surface Finish for Transmission Pulleys (B4-2002) Elastomeric Coupling Glossary of Terms (MPTA C-1 19