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  • Is that a single or a double nut ball screw?
    Inconsistent ball-screw definitions can confuse engineers. This conventional double nut has a split spacer that can be removed for grinding to adjust the preload. Fitting keys prevent the nuts from turning relative to each other. The size of the nuts, mainly the outer diameters, keeps them aligned
  • Choosing the Best Lead Screw for a Linear Motion Application
    Getting the best lead screw for the job Knowing the details of a linear-motion application increases the odds of choosing the right ball screw. Before engineers can specify the type and size of leadscrew needed for a linear-motion application, they must understand the demands of that the job
  • Timing Screw Terminology
    Summary: In addition to the applications described, timing screws can be specially designed either singularly or in a combination of patterns to adapt to your container size and shape as well as your machines' specific requirements.
  • Washers
    , regular, and wide diameters for each screw size from No. 0 to 3 in. However, many other standard sizes are available. are used with screws to add spring take-up to screw elongation. Type L conical washers are designed for use with unhardened screws. Type H series is for hardened screws. Conical washers
  • Diagnostics Decapper Success Story
    An industry-leading diagnostics client wanted a module that could decap a variety of different test tubes (size and cap type) on their Laboratory Automation Lines. The challenge of different sizes tubes (diameter and height), as well as different colored caps and different cap retention features
  • Medical Device Link .
    An Estonian contract manufacturer provides medical-grade PVC tubing extrusion. A 38-mm single-screw extruder operates in Class 10,000 conditions. Capabilities include cutting to size, coiling, labeling, and packaging. The company offers full traceability, and is certified to ISO 9001 and 14001
  • Cylindrical Annular Design
    The overriding consideration in designing a very large gage (over 8 inches in diameter) is to make it light enough to handle easily without fatiguing the user. These gages are, therefore, designed with as little metal as possible, considering that they must be completely stable as to size
  • Grinders, Shredders and Comminutors - An Evolving Technology
    to develop the best size reduction device. The latest grinder innovations to be introduced have coupled the power of twin shaft grinding with higher flow capabilities and screw screening systems. Here's a rundown on the past and present state of the art in wastewater solids reduction.
  • Actuators tackle the tough jobs
    more contact points than balls screws of the same size. This extends their life and increases stiffness and load capacity. Planetary roller screws are efficient and compact devices that convert rotary motion into linear motion. They perform the same types of tasks as do Acme or ball screws
  • Better bundles with leadscrews
    Replacing a pneumatic actuator with an intelligent lead-screw system let a company that makes shrink-bundling machinery avoid difficulties when changing product lines. A recent upgrade of the shrink bundler from Omega Design Corp. reduced changeover times and lowered maintenance demands
  • Medical Device Link .
    for hygroscopic materials such as nylon, polyurethane and polyethylene terephthalate, among others. After the material is prepared, it is fed, usually by gravity, to the rotating screw of an extruder. In the extruder, the polymer is heated, fed, compressed and metered. The homogeneous melt is fed

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