ThomasNet News Logo
Sign Up | Log In | ThomasNet Home | Promote Your Business

Ball Screws feature rotating nuts.

Print | 
Email |  Comment   Share  
Ball Screws feature rotating nuts.
Ball Screws feature rotating nuts.
Click Here to Enlarge Picture
January 23, 2003 - Ball screws with rotating nuts are suitable for automated machinery that operates at high speeds. Nuts are offered in 16 x 30, 32 x 40, and 65 x 80 sizes. Any ball nut can be modified and converted into rotating nut, by adding precisely ground bearing seat on outside diameter, together with lock nut threads.

New Ball Screws with Rotating Nuts Solve Critical Speed Limitation

(Archive News Story - Products mentioned in this Archive News Story may or may not be available from the manufacturer.)

11 DeAngelo Dr.
Bedford, MA, 01730

Press release date: January 10, 2003

Bedford, MA, January 10, 2003 -- Steinmeyer, Inc. announced a significant addition to its standard line of precision ball screws - Rotating Nuts. Automated machinery operates at high speed today - and increasingly higher speeds tomorrow. This places additional demands on critical linear drive components such as ball screws. Two speed - related factors must be considered when designing with ball screws. One is the rotational limit for the ball nut, referred to as its dN value. The second is the rotational limit for the screw, or its critical speed. Rotating a ball screw at or near its critical speed causes harmful vibration due to resonance. Holding the screw stationary and using the motor to directly rotate the ball nut can alleviate the critical speed limitation. Rotating the nut has the following advantages, compared to rotating the screw:
• higher critical speed
• higher rigidity
• easier to cool the screw
• easier to pretension the screw

"We are seeing significantly more applications for Rotating Nuts. As machines get larger and faster, ball screws get longer and designers constantly fight critical speed issues", observes George Jaffe, Executive Vice President. "One solution is to redesign the whole machine and switch to linear motors. But that adds considerable cost and complexity. And linear motors, though offering speed advantages, have their own disadvantages. An alternative solution is to rigidly fix the screw and reconfigure the ball nut to allow direct connection to the motor."

Steinmeyer offers several standard Rotating Nut designs in sizes 16 x 30, 32 x 40 and 65 x 80 (pitch x diameter). And, any Steinmeyer ball nut can be modified and converted into a rotating nut, by adding a precisely ground bearing seat on the outside diameter, together with lock nut threads (as shown on the attached photo). This allows assembling the nut support bearings directly to the nut body. Another alternative is to install a standard Steinmeyer ball nut into a sleeve. The sleeve is then configured to accept duplex bearings, locknut, drive pulley (to enable motor connection) and rotating union for lubrication.

For further information call 1-800 -297 -6403 or visit and click on Rotating Nuts!
Print | 
Email |  Comment   Share  
Contacts: View detailed contact information.


Post a comment about this story

(your e-mail address will not be posted)
Comment title:
To submit comment, enter the security code shown below and press 'Post Comment'.

 See related product stories
More .....
 See more product news in:
Machinery and Machining Tools
 More New Product News from this company:
XY Stage is driven by ironless core linear motor.
Point to Point Motion Controller features compact design.
Linear Stage features self locking ball screw.
Precision Rotary Stage delivers accuracy and repeatability.
XYZ Stage with Granite Base is suited for medical dispensing.
More ....
| Featured Manufacturing Jobs
 Other News from this company:
Company Name Change
New and Improved Corporate Home Page
Factory Expansion
New Ball Screw Blog
Custom Positioning Systems for Medical Technology
More ....
 Tools for you
Watch Company 
View Company Profile
Company web site
More news from this company
E-mail this story to a friend
Save Story
Search for suppliers of
Ball Screws
Join the forum discussion at:
The Hardware Bin

Home  |  My ThomasNet News®  |  Industry Market Trends®  |  Submit Release  |  Advertise  |  Contact News  |  About Us
Brought to you by        Browse ThomasNet Directory

Copyright © 2014 Thomas Publishing Company. All Rights Reserved.
Terms of Use - Privacy Policy

Error close

Please enter a valid email address