Single stroke mechanism as used on full revolution mechanical power presses. Text version Home Index Search Standards Interpretation and Compliance Letters Single stroke mechanism as used on full revolution mechanical power presses. As you are aware, the standard does not define a specific device to achieve single stroke capability. There is no requirement that the arrangement be specifically a mechanical device. The language as stated by the standard is not intended to limit or inhibit the application of improved methods by which single stroke is achieved.
Mechanical devices are normally less expensive to purchase and install.
Qualified employees to perform installation and service are rarely a problem to the employer. Although service life between service and repair is shorter than competing methods, the relative simplicity of the mechanical devices must be considered. Their condition can be visually examined during each servicing or inspection of the press, thereby assuring reliability and the intent of the standard. Additionally they can provide various alternatives and expanded capabilities to the safe operation of the press. OSHA standards require minimum acceptable criteria for safety.