The Difference Between Coiled Spring Pins and Slotted Spring Pins

Overview

The white paper discusses Spring Pins, specifically focusing on their design, functionality, and advantages over traditional Solid Pins. Spring Pins, also known as Tension Pins or Roll Pins, are mechanical fasteners used to secure multiple parts of an assembly. Unlike Solid Pins, which have a rigid structure, Spring Pins are hollow and designed to be larger than the hole they fit into, allowing for greater flexibility and tolerance in manufacturing.

The paper highlights two main types of Spring Pins: Coiled Spring Pins and Slotted Spring Pins. Coiled Spring Pins are rolled from a thinner strip of material, featuring a coiled design that allows for significant flexibility even after installation. This flexibility enables them to absorb vibrations and changing loads, thereby extending the life of the assembly and protecting the host material from damage. In contrast, Slotted Spring Pins, which are C-shaped, have limited flexibility once installed, as the slot closes and they behave more like Solid Pins, potentially leading to damage in the host component.

The document emphasizes the importance of selecting the appropriate type of Spring Pin for specific applications, particularly in automated environments where consistent quality and minimal downtime are critical. Coiled Spring Pins are recommended for such settings due to their trouble-free installation and orientation-independent performance.

Additionally, the paper discusses the implications of slot orientation in Slotted Pins, noting that improper alignment can significantly reduce their service life. It concludes by offering application engineering support from SPIROL, encouraging users to seek assistance in selecting the most cost-effective fastening solutions for their needs.

Overall, the white paper serves as a comprehensive guide to understanding the benefits and applications of Spring Pins, particularly in enhancing assembly efficiency and longevity.