Resources
Standards
MPTA B1c – Bore and Keyway Tolerances for V-Belted Sheaves (MPTA-B1c-2010)
This standard defines the bore and keyway tolerances to be used for V-belted sheaves.
MPTA B2c – Standard Practice Sheave / Pulley Balancing (MPTA-B2c-2017-R2024)
This document is a standard practice for sheave/pulley balancing in mechanical power transmission, including guidelines for one-plane and two-plane balancing. Defines the balance tolerances to be used with all transmission sheaves/pulleys with or without grooves or teeth.
MPTA B4c – Standard Surface Finish for Transmission Pulleys (MPTA-B4c-2008 R2024)
This document outlines the standard surface finish requirements for transmission sheaves and pulleys. It applies to v-groove sheaves, cylindrical (flat) pulleys, and synchronous pulleys.
MPTA B6c – Quick Detachable Bushing and Mating Hub (MPTA-B6c-2020)
This standard provides general dimensions and tolerances for inch quick detachable bushings and mating hubs.
MPTA B7i – Calculation of V-Belt Tensions And Shaft Loads (MPTA-B7i-2024)
This standard provides a method for calculating and measuring belt tensions and for calculating shaft loads on a two-sheave locked center V-Belt drive.
MPTA B8i – Sheave Arm Stress Formula (MPTA-B8i-2011 R2016)
This standard provides a method for calculating bending stresses in v-belt sheave arms.
MPTA B9i – Taper-Lock Bushing & Mating Hub Standard (MPTA-B9i-2020)
This standard defines the general dimensions and tolerances for Taper-Lock detachable bushings and mating hubs.
MPTA B10i – Split Taper Bushing Standard (MPTA-B10i-2020)
This publication is intended to provide dimensions and tolerances, which permit bushings made by one manufacturer to be used to mount sheaves or other products made by different manufacturer.
MPTA B13i – Rim Speed Limits Standard (MPTA-B13i-2013 R2019)
This standard provides rim speed limits for sheaves and pulleys based on typical construction and materials. Any rim speed above 6,500 feet per minute must be carefully considered.
MPTA C1c – Elastomeric Coupling Glossary of Terms (MPTA C1c-2014 R2024)
This standard is a listing of commonly used terms as compiled by the members of the elastomeric coupling industry. It contains the definitions of these terms as they apply to elastomeric couplings.