Ball screw actuators
1st Quarter 2011
News & events
Duff-Norton ball screw actuators provide high efficiency and speed in one linear positioning package. They can handle full load in tension or compression. The positive action of the low friction ball screw and nut design increases the life at load and reduces the power needed to achieve a specified thrust. They come in many standard models or can be custom-designed for any application from half a ton up to 50 tons. They can be used individually, in tandem or as part of a larger mechanical system. With lifts up to 7 m, the actuators offer a solution to many linear positioning applications.
Adjustable to take end play out of bearings, the shell cap is locked into place by set screws. The ball nut is equipped with return tubes for continuous recirculation of the steel balls. It is threaded and secured to the worm gear which is constructed of wear resistant bronze and is accurately hobbed for greater gear contact.
Load bearings at the top and bottom take loads in either direction. The worm is available with double or single shaft extension. Clockwise rotation of this end raises load on all actuator models except the 50 ton ball screw actuator units. Thrust bearing and grease seals are situated at each end of the worm. The half- and 1-ton models have aluminium housings, the 2 to 10-ton models have ductile iron cast steel housings and the 20-ton to 50-ton models are housed in cast steel.
Duff-Norton is represented locally by Yale Engineering.
For more information contact Kevin Hoy, Yale Engineering Products, +27 (0)11 794 2910, [email protected], www.yalejhb.co.za
Further reading:
WearCheck turns the focus on friction modifiers
News & events
One of the most important features of a lubricant is the reduction of friction between two surfaces.A dditives like friction modifiers are added to perform this function. Wearcheck turns the focus on friction modifiers
Read more...
From the editor's desk: Where is AI taking us?
Technews Publishing
News & events
Welcome to another year with
Motion Control. May it be a happy and healthy one where you can rise to the challenges ahead and still enjoy all the good things we have in this country.
As we continue
...
Read more...
Timken funds Kids Haven STEM classroom
News & events
A bright new chapter in digital education has begun at Kids Haven with the official opening of a fully equipped STEM classroom at the Kids Haven Village. This exciting addition was generously donated by Timken South Africa and expertly installed by Breadline Africa.
Read more...
Bearings International enters South Africa’s pump market
Bearings International
News & events
Bearings International has entered into the local pumps market through an exclusive distribution agreement with leading Italian pump manufacturer, SAER.
Read more...
SKF launches the Patent Bay
SKF South Africa
News & events
SKF is launching The Patent Bay, a new platform open to companies that aim to accelerate technologies with the potential to advance sustainability, by making selected patents freely available to others.
Read more...
SKF and Sieb & Meyer announce strategic partnership for magnetic bearings
SKF South Africa
News & events
SKF has announced a strategic partnership with Sieb & Meyer, a renowned expert in variable frequency drives and control electronics.
Read more...
Young SA scientists awarded medals at IRIS Global Symposium in India
News & events
Young local scientists have been awarded gold and silver medals at the recent Initiative for Research and Innovation in STEM global symposium in India, where they displayed their scientific brilliance.
Read more...
UKZN’s SMART lab wins aviation award
News & events
The SMART Lab at UKZN was awarded first place in the Aviation Research and Development category at the Civil Aviation Authority of South Africa’s award ceremony for outstanding contributions and achievements in the aviation sector.
Read more...
Hamar Controls earns dual Siemens Partner Awards
News & events
Hamar Controls, a provider of advanced electrical, control and instrumentation solutions to Africa’s mining and industrial sectors for over 40 years, has been honoured with two Smart Infrastructure Partner of the Year Awards by Siemens.
Read more...
Schneider Electric to become Official Energy Technology Partner of McLaren Racing
Schneider Electric South Africa
News & events
Schneider Electric will become the Official Energy Technology Partner of McLaren Racing.
Read more...
printer friendly version