Pennsylvania Code
Title 34 - LABOR AND INDUSTRY
Part I - Department of Labor and Industry
Chapter 29 - MECHANICAL APPARATUS-MISCELLANEOUS
Subchapter C - MECHANICAL POWER TRANSMISSION APPARATUS
SPECIFICATIONS
Section 29.129 - Shaft projections and keyways
Current through Register Vol. 54, No. 38, September 21, 2024
(a) Set screws wherever located shall be made flush or enclosed.
(b) Revolving projections on shafting and shaft equipment such as keys and bolts and grease cups shall be enclosed by a cylindrically smooth enclosure or made flush, except for bolts or grease cups located in the hubs or rims of pulleys, collars or couplings which do not project beyond the two planes formed by the rims of the pulley, collar or coupling.
(c) Keyways in the ends of shafting less than 6 feet above the floor or working platform, which project more than 2 inches beyond the bearings, or adjacent parts of a machine, shall be plugged so as to effect a smooth shaft, or they shall be enclosed.