Product News: Machinery & Machining Tools
Ball Screws feature rotating nuts.
Press Release Summary:
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.
Original Press Release
New Ball Screws with Rotating Nuts Solve Critical Speed Limitation
Press release date: January 10, 2003
"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 www.steinmeyer.com and click on Rotating Nuts!