Product category:
Miscellaneous machine tool equipment (fixtures, rotary tables etc.)
News Release from: Kerk Motion Products | Subject: Lead screws and nuts
Edited by the Manufacturingtalk Editorial
Team on 20 August 2002
Standard and custom lead screws and nuts
offered
Kerk Motion Products supplies a wide variety of custom products, in addition to its full line of standard lead screw products.
Kerk Motion Products, one of the world's premier manufacturers of non-ball lead screws, supplies a wide variety of custom products, in addition to their full line of standard lead screw products Utilizing in-house design and manufacturing resources, Kerk produces custom molded and machined components for motion control and actuation
This article was originally published on Manufacturingtalk on 20 Aug 2002 at 8.00am (UK)
Related stories
Co-axial screw does not need protective bellows
The co-axial screw rail eliminates the need for protective bellows, saving space and cutting costs.
Simple leadscrew design is easily modified
Simple, compact design of an anti-backlash lead screw assembly allows easy modification for custom applications demanding precision, reliability and value.
Custom nuts provide added functionality, often replacing several components, simplifying design and assembly while improving performance and reducing cost.
As an example, Kerk's custom lead screws and nuts are presently being used for automatic door actuation.
The product was adapted for use in a variety of transportation-related applications, including use in mass transit vehicles such as subways, trains, and trolleys.
Economically priced, the assembly is designed for extremely long life (it has been customer tested to more than 1 million cycles), requires no maintenance and offers a high degree of accuracy and dependability.
The screw and nut combination includes a precision-rolled, stainless steel lead screw and a custom-formulated, high-strength, self-lubricating Kerkite polymer nut.
The screw, available in lengths up to 12 feet, is offered in both right- and left-hand thread in a variety of leads (including back driving leads), up to three inches per revolution.
In a typical transportation application, the doors are opened and closed by the motor-driven screws.
In some instances, (i.e., a set of subway doors where the two door halves meet in the middle) each door leaf has its own motor and Kerk screw to open and close.
The doors utilize software and motor synchronization to achieve simultaneous movement.
In other cases, a single Kerk lead screw can be used where both doors ride on their respective half of the screw.
The lead screw is RH on one side and LH on the other, so that turning a single motor in one direction allows the two doors to move in opposite directions.
The screw is currently in use in transportation-related applications in North America, Europe, Asia and Far East.
• Kerk Motion Products: contact details and other news
• Email this article to a colleague
• Register for the free Manufacturingtalk email newsletter
• Manufacturingtalk Home Page
Search the Pro-Talk network of sites
