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  • Acme Screw Selection
    The selection of the correct acme screw and nut for a particular application involves four interrelated factors. Before attempting to determine the acme screw and nut combination, the following values must be known: Axial load measured in pounds or newtons. Speed measured in inches or millimeters
  • A Critical Look at Acme, Ball, and Roller Screws for Linear Motion
    actuators: Acme, ball, and roller. The differences are in thread shape and the design and operation of the matching nut. But which type of screw best suits your application? Here's a concise look at all three. screws use strong threads with generally trapezoidal teeth which are usually rolled onto
  • Common Ball Screw Terminology
    Acme Lead Screw: Acme lead screws have a 29 degree thread angle. An Acme lead screw is less efficient than a square thread, but is easier to machine.
  • Where die casting makes "cents "
    precise tolerancing requirements and do so on a budget. The gear drive incorporated not only an Acme screw thread at one end of a bearing journal but also a cross-axis helical gear on the other. One potential option was machining. But this was costly and time consuming. It would have entailed making
  • 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
  • New Spins on Bearing Technology (.pdf)
    Nook Industries provides a complete selection of inch and metric Ball Screws, Roller Screws, Acme Screws, Lead Screws, End Bearing Supports, Precision Locknuts, Worm Gear Screw Jacks, Electric Actuators, HRC 60 Linear Shafting, Linear Bearings and Pillow Blocks to the Linear Motion Industry
  • What You Ought To Know About Ball Screws
    as small as 0.375-in. diameter and 0.125-in. lead with 90% efficiency. (Acme screws are typically just 30 to 60% efficient.) Single-nut screws have 170-lb dynamic load capacity and 1,600-lb static load capacity. Load capacities double when using two nuts. The next time you're faced with a design

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