This paper summarizes the chemical, metallurgical and physical aspects of bearing steels and their effect on rolling bearing life and reliability.

The complete Product News section from the December 2012 issue of Power Transmission Engineering.

Brian K. Langenberg explains what's likely to happen in the economy over the coming months.

Highlights from our e-mail newsletter and online videos section.

In most cases, industrial power transmission calls for flexible rather than rigid couplings in order to forgive minor shaft misalignment. For that reason, this article will focus solely on the selection of flexible couplings.

Seal design engineers and end users are continually seeking improved sealing systems and materials. This paper describes the potential of a new thermoplastic polyurethane (TPU) material to deliver improvements in pressure, speed and temperature capability, which are presented as comparisons to proven industry standard materials. Performance is demonstrated by virtue of test bench results of seals made from MDI-, PPDI- and NDI-based materials.

The availability of high-strength shaft materials, in combination with bearings with high carrying capacity, allows use of slimmer shafts. However, the modulus of elasticity remains the same, so seat design for bearings and gears must be given close attention.

Managing Editor Randy Stott recounts a recent visit to Siemens manufacturing and assembly facilities in Elgin, IL.

Though the original definition of mechatronics derived from the Yasakawa Electric Company in the late 1960s (the company won trademark rights for the term in 1973), the word has remarkably evolved.

This special product news section takes a look at the latest in motion control products.