Product category:
Ballscrews, Linear Guides, Jacks, Dampers
News Release from: Abssac | Subject: XCT and XCF nut rolled acme screws
Edited by the Engineeringtalk Editorial
Team on 19 July 2000
Backlash eliminated from rolled acme
screws
The new Abssac XCT and XCF rolled acme screw nut designs rely on a revolutionary Cross Cam design, called the "Active Cam" to eliminate backlash
Eliminating backlash from Lead Screw Nut designs has always been a demanding task Too eliminate the backlash often meant a sacrifice in drag torque
This article was originally published on Engineeringtalk on 22 Feb 2000 at 8.00am (UK)
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Two new nut designs are at the leading edge of high accuracy.
The new XCT and XCF nut designs rely on a revolutionary Cross Cam design, called the "Active Cam" to eliminate backlash, maintain a high axial stiffness but simultaneously reduce drag friction.
Normal split nut designs with a loaded spring between the two halves eliminate backlash, but inherently have high drag torque's and lower thresholds where axial stiffness can be maintained.
The new XCT and XCF units eliminate these problems.
The main features of the XCT and XFT nut design are; Very Low Drag torque.
Drag Torque is bi-directionally stable resulting in higher positional accuracy in both directions.
Antibacklash linear operation.
Low Radial-lash during operation Thermally balanced Stainless Steel cam maintains low levels of drag torque even in high and low temperatures.
Ideal low cost replacement for lower load ball screw assemblies.
They are available on one of the most comprehensive ranges of cold rolled formed stainless steel screws on the United Kingdom market.
High quality and accuracy product.
Automatically adjusts and compensates for wear maintaining features and benefits to system.
Backed up by ISO9000 service and control.
The new nut designs can be attached to the application via the integral flange mounted style nut "XCF" or by the thread mounted version "XCT".
The nuts compliment cold rolled formed stainless steel acme screws from 3/16inch diameter though to 16mm diameter, combined with a range of leads in each diameter.
Mr Simon Cattle, Managing Director says, " There is a real demand for high accuracy rolled acme screws, but traditionally nut designs have trailed behind in terms of performance.
These new nut designs bring a low cost alternative to the designer whilst maintaining a high degree of performance.
When you combine this with the massive range of rolled screw formats we offer we have a formidable package to offer the end user".
"This Active Cam Technology has a new patent, which is applicable to more than just current XCT and XCF product lines.
The Active Cam technology that spawned the XCT and XCF will be used to launch a new generation of products. Request a free brochure from Abssac ...
The patent could also be used for ball screws or other devices".
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