The Spinea TwinSpin high precision reduction gear from DieQua is designed specifically for applications requiring zero backlash, high accuracy, high torsional rigidity and high tilting load capacity, in a compact design. They are ideal for robotics, rotary tables, machine tools and other precision machinery.

The Timken Company recently announced its power systems service facility in Princeton, WV, has earned ISO 9001:2008 Quality Manageme...

Engineers typically learn that the bearing L10 life can be estimated using the so called “C/P method” — or the “basic rating life” of the bearing, a method rooted in the 1940s. Major developments have since led to the “modified rating life,” released in ISO 281:2007, which includes the aiso life modification factor. In this paper a succession of equations used for bearing life ratings are reviewed, and current bearing life rating practices are discussed in detail. It is shown that — despite the introduction more than 30 years ago of the adjustment factor of the basic rating life, and the standardization in 2007 of the aiso modification factor — use of these improved calculation methods are not practiced by all engineers. Indeed — many continue referring to the old model as a way of seeking compliance with existing, established practices.

Bellows couplings first began to be widely used by machine tool builders in the mid-to-late 20th century. With the advent of CNC technology, machine engineers started looking to improve upon some of the negative influences traditional power transmission couplings can have on a precision rotary / linear motion system.

“[Motion, Drive & Automation] at Hannover Messe is the place where the future is determined.”

This issue we present our Hannover Fair preview. As most of you know, Hannover is one of the biggest trade shows on Earth, and by far the largest that includes a significant focus on mechanical power transmission components.

The Spinea TwinSpin high precision reduction gear from DieQua is designed specifically for applications requiring zero backlash, high accuracy, high torsional rigidity and high tilting load capacity, in a compact design. They are ideal for robotics, rotary tables, machine tools and other precision machinery.

Let’s be clear about something up front here: Delta Gear does not make parts for lawnmowers. This is a fairly flippant point that falls under the timeless, clichéd designation of “goes without saying.” Yet, not all that long ago,Tony Werschky had to say it.

The use of motor current signature analysis (MCSA) for motor fault detection — such as a broken rotor bar — is now well established. However, detection of mechanical faults related to the driven system remains a more challenging task. Recently there has been a growing interest for detection of gear faults by MCSA. Advantages and drawbacks of these MCSA-type techniques are presented and discussed on a few industrial cases.