Steinmeyer Ball Screws with One Million Newton Load
Capacity
Steinmeyer, Inc. has announced a new addition to
its UltraThrust product line: a 100 x 25 ball screw boasting a load capacity of
one million newtons. "By using massive 19mm diameter load carrying balls,
Steinmeyer now provides more than three times the capacity of conventional ball
screws," said a company spokesperson. "The newest addition to our extensive
UltraThrust series-a 100 mm diameter ball screw with 25 mm pitch-features a nut
body diameter of 170 mm and an overall length of 290 mm. Dynamic capacity is 841
kN and static capacity is 1,989 kN. The UltraThrust series is specifically
designed to replace hydraulic drives in injection mold machines or for use in
very large transfer line modules."
Steinmeyer reports that precision ground ball
screws offer the following benefits when compared with hydraulic drives:
Ball screw load rating is determined primarily by
the number of load carrying balls and their size. Other factors include contact
angle and track conformity, but these are limited by design rules. The number of
balls can be increased by adding more circles, but only to a certain degree due
to grinding constraints as nut length grows. So, to increase capacity
significantly, the ball size must be increased. Larger balls put greater demands
on the ball return system, yet speed ratings should remain high in order to meet
the requirements of machine designers. Steinmeyer was able to use its production
proven high-speed line of ball nuts, the "UltraSpeed" series with dn values up
to 160,000, as a basis for the development of UltraThrust, the company reports.
For more information contact:
John Skaltsas
Sales and Marketing
Steinmeyer, Inc.
781-273-6220
Fax: 781-273-6602
www.steinmeyer.com
E-mail: info@steinmeyer.com