• Power Screw – Wear Life

    Posted August 22, 2019 - Updated Dec 4, 2019

    Wear Life of Power Screws The wear life of power screws is a function of: Load Speed Lubrication Contamination Heat and other factors. The operating loads listed in the Screw/Nut Engineering section for each screw series provide acceptable wear life for most applications. Wear in a power screw is generally in proportion to usage. Each […]

  • Speed for Power Screws

    Posted August 22, 2019 - Updated Dec 4, 2019

    Power Screws, Speed and Efficiency Along with efficiency, speed for power screws is one of the most important considerations when selecting a product. Acme screws are most commonly used at 100 rpm or less, with some applications running in the 300 rpm range. Because of their relatively low efficiency, when faster traverse rates are needed, […]

  • Power Screws Basics & Materials

    Posted August 22, 2019 - Updated Dec 3, 2019

    Power Screws Basics Power screws cover a wide variety of screw series and include Acmes, Hi-leads®, Torqsplines® and other special series (not offered in this catalog but produced for OEM customers) such as Stub Acme, Trapezoidal (“metric Acme”) and Buttress. Regardless of the thread series, an externally threaded screw mates with an internally threaded nut […]

  • Types of Screws

    Posted August 22, 2019 - Updated Dec 12, 2019

    There are two general types of screws used to create motion and power: Power Screws and Ball Screws. Power Screws Power screws are the simplest of these as they have only two main elements, the screw, and the nut. Considerations for application and selection of power screws include: Power screw basics and materials Speed for […]

  • Power Screws – Options for Shaft Joint Designs

    Posted June 21, 2019 - Updated Dec 4, 2019

    (Engineering Bulletin #/web973) Coupling Types Non-coupling Types

  • Power Screws – Plating Considerations for Threads

    Posted March 22, 2019 - Updated Dec 4, 2019

    (Engineering Bulletin #/web963) Special considerations are necessary when using plating processes that add material thickness to Acme screw threads. These processes include electroplating of zinc, chrome and cadmium as well as electroless nickel and many others. Processes such as black oxidizing, which transform the surface but do not add thickness to the surface require no […]