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  • How to Select the Proper Diameter and Duty of a Coiled Spring Pin
    This White Paper provides the fundamental guidelines for determining the optimum balance between strength and flexibility of the Coiled Spring Pin that will result in the prolonged net life of the assembly.
  • The Importance of the Insertion Quill when Installing Coiled Spring Pins
    When installing Coiled Spring Pins, it is important that the installation tool, often called a "quill", is large enough to cover the entire end of the Coiled Pin. The quill should be sized such that it pushes on all five coils simultaneously throughout the entire installation process. Otherwise
  • How to Reduce Assembly Costs with Coiled Spring Pins
    In any assembled component there are two ways to reduce the overall cost of the assembly: reduce the cost of the individual components or reduce the cost to assemble the components. The Coiled Pin is designed to be a versatile, integral, and cost effective solution to many assembly problems.
  • Measurement Techniques for the Inspection of Coiled Spring Pins
    Coiled pin design is such that, diameter will be within specification over a minimum of 270° of the circumference. This design characteristic ensures that diameter at the seam will remain equal to, or less than, that at any other point in the plane of rotation. This feature prevents the seam from
  • The Impact of Clearance on the Shear Properties of Coiled Spring Pins
    This White Paper quantifies the effects that clearance between the shear plane has on the strength of a pinned joint.
  • Coiled Spring Pins Offer a Unique Balance of Strength and Flexibility
    Easily recognized by its unique 2¼ coil cross section, Coiled Pins are retained by radial tension when installed into the host component, and they are the only pins with uniform strength and flexibility after insertion.
  • Which Austenitic Stainless Steel Spring Pin is Best for Dynamic Loading?
    This White Paper details the specific design differences between both Austenitic Stainless Steel Slotted Spring Pins and Coiled Spring Pins and explains which Spring Pin is best for dynamic loading.
  • How to Properly Pin a Gear and Shaft Assembly
    One of the primary benefits of using a Coiled Spring Pin to affix a hub or gear to a shaft is the Coiled Pin 's ability to prevent hole damage. Another benefit is that the Coiled Pin absorbs wider hole tolerances than any other press-fit pin. This translates to lower total manufacturing costs
  • Hole Preparation for Press Fit Pins
    the hole preparation processes required to successfully install commonly used press fit pins. The pins evaluated in this document are listed below, in order of increasing recommended hole tolerance. 1. Ground Dowels & Straight Pins. 2. Knurled & Grooved Pins. 3. Slotted Spring Pins. 4. Coiled Spring
  • Slotted Pin Inflexibility Leads to Failure
    the pin and host wall, and not by deformation as with alternative solid press fit pins. However, is important to note that there are two types of Spring Pins - Coiled Spring Pins and Slotted Spring Pins - and the two are very different from each other. One is recommended for dynamic loading, and one
  • How to Properly Pin a Shaft and Hub Assembly
    One of the primary benefits of using a Coiled Spring Pin to affix a hub or gear to a shaft is the Coiled Pin's ability to prevent hole damage. Another benefit is that the Coiled Pin absorbs wider hole tolerances than any other press-fit pin. This translates to lower total manufacturing costs
  • Comparative Analysis of Type 316 Stainless and 302/304, 420 Types
    The versatility of Coiled Spring Pins often times makes them the ideal fastener to meet the specific engineering and economic objectives of pinning applications. They are available in a wide variety of sizes, duties, finishes, and materials. Among the materials used to manufacture Coiled Spring
  • Spring Probe PGA Technology Spring Probe based Pin Grid Arrays (PGAs) for MRI Applications
    developed non-magnetic spring probes with mating cycles exceeding 60,000, specifically for MRI applications. Using a spring probe grid array allows for the designer to customize the number of ground pins used to optimize the performance of the connector for specific frequencies/coil designs, saving
  • The Advantages of Using Light Duty Coiled Pins Versus Slotted Pins in Soft Materials
    This paper compares and contrasts the use of various types of spring pins used in soft host materials, and provides valuable information regarding the optimum solution for plastic assemblies.
  • The Advantages of CL220 Split Seam Compression Limiters
    In the 1940s, SPIROL 's founder, Herman Koehl, invented the Coiled Spring Pin to service a need in the aviation industry that couldn 't be met by any other fastener. Throughout the years, innovation has remained one of SPIROL 's core principles, and new product lines have been continuously

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