Engineering Bulletins

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The following bulletins address some common concerns of our fellow engineers:

  • Ball Screws – Transfer Instructions for Ball Nuts

    Posted July 26, 2019 - Updated Dec 4, 2019

    (Engineering Bulletin #/web974) For production environments, users will find it helpful to make an assembly arbor of steel which will fit over the machined ball screw on one end and fit into the shipping arbor on the other end. Use of such an arbor reduces the possibility of losing bearing balls during transfer. For a […]

  • Power Screws – Options for Shaft Joint Designs

    Posted June 21, 2019 - Updated Dec 4, 2019

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

  • Steel Nuts – Precautions for Using Steel Nuts

    Posted May 24, 2019 - Updated Dec 4, 2019

    (Engineering Bulletin #/web971) Steel nuts should be used with steel screws for the purpose of sustaining loads or for only occasional movement of light loads. Typical applications include support jacks and clamps which maintain loads and are only periodically re-adjusted. Trailer jacks, floor jacks and jig and tooling jacks are typical applications for steel nuts. […]

  • Flanges – Securing Flanges to Acme Nuts

    Posted April 26, 2019 - Updated Dec 4, 2019

    (Engineering Bulletin #/web964) Key torque (the torque on a nut necessary to produce a linear motion) may be high enough to unscrew a nut from its mating flange. Smaller sizes may be secured with a thread locking compound or with a locking set screw which applies a radial locking force against the threads. Securing Flanges […]

  • 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 […]

  • Ball Screws – Annealing the Shafting For Easier Machining

    Posted February 22, 2016 - Updated Dec 4, 2019

    (Engineering Bulletin #/web911) For customers who do their own end machining, it may be necessary to anneal (soften) the ends of the ball screw shaft. Annealing the Shafting For short shafts, immerse the portion of the screw, which is to remain hard in water. Heat the remaining portion of the shaft to approximately 1200° F. […]