In recent years, ball screws have been looked at more and more favorably as replacements for hydraulics. They offer higher efficiency and speed, and can be controlled more precisely with servo loops. And who wants to deal with the unavoidable maintenance and disposal hassle of hydraulics?
Steinmeyer is recognized worldwide as an elite supplier of premium engineered products. The company enjoys a century of designing and manufacturing precision tools and components in Germany. Throughout its long history, Steinmeyer has been family owned, operating under the leadership of the Beck family since 1940.
Many of our customers, especially those with high speed applications, have been asking: can you make the screws any quieter? Recently, Steinmeyer delivered an answer: the Quiet Series, featuring an innovative end cap that reduces noise by 50%.
Like all motion control devices based on contact friction, ball screws require lubrication for proper functionality. The reason is that lubrication is required for smooth recirculation of the rolling elements.
Customers often ask us: what type of lubricant is best for my ball screw application? And which is better, oil or grease? The truth is that both oil and grease can perform well in a variety of situations.
Double Nut vs. Single Nut
In the Steinmeyer view of ball screw design, a double nut is always associated with 2-point contact. The advantages of 2-point contact are numerous: lower friction, more consistent torque, higher stiffness, and longer life.
Proper functioning wipers are an essential element of any ball screw system. Their first job, of course, is to shield the contact surfaces from contamination. But some wipers may also serve as a lubricant reservoir, thereby lengthening service intervals. Fortunately, Steinmeyer offers the industry’s widest choice in wipers:
Steinmeyer recently added a key individual to its USA sales force. He is Bruce Gretz. Bruce has 30 years’ experience in various high tech businesses including Loral and Rockwell.
Steinmeyer recently added Custom Precision Solutions (CPS) as our representative for the southeast USA. Dominic Mastroianni, president of CPS, is located in Wake Forest North Carolina and covers the following states: Maryland, Virginia, North Carolina, South Carolina, Tennessee, Georgia, Alabama and Florida.
Seems there is still a lot of confusion on load and life ratings when it comes to ball screws. Many people are familiar with the classic L10 life equation L10 = (Ca/P)^3 x 10^6 revolutions where Ca is the dynamic capacity in N and P is the mean applied axial load in N. Recently we fielded several inquiries on applications where an engineer wanted to know whether s/he can apply a force equal to Ca and achieve 1 million revolutions of life. Or even higher than Ca and achieve less than 1 million revolutions. The basic answer is NO! Here is why: