TechArchive

Original article date: March 2000 It’s not often that we hear of a new concept in roller bearings, so we sent Tommy Miller to find out more Roller bearings, one with a cage, one without, and yes, the rollers are hollow? This design offers several advantages compared with solid roller bearings and preloaded ball bearings, [...]

Original article date: July 1998 The need for frictional hub connections arose through situations where other shaft hub attachment methods such as keys splines and shrink fits have failed or presented problems. Frictional shaft-hub connections are one answer argue Martin McDonagh and Tony Thornton of Ringflex Drive Systems. The keyed connection though widely used can [...]

This article was originally written in the period 1995-2000 Hybrid angular contact bearings last four to six times as long as conventional high precision spindle bearings; make it possible to accelerate and retard the spindle to an extent unachievable with bearings having steel balls; offer extremely high speeds and accuracy; and thanks to the lubrication [...]

Original article date: April 2000 To determine the cause of a drive problem, you can rely on a wide range of tools, from the technical to the surprisingly simple. We consulted Gates for a few possibilities If your drive belts are failing prematurely, then you’ll want to know why. As outlined here, there is a [...]

This article was originally written in the period 1995-2000 Jeff Mead of EMS explodes the myths about differences between spur and planetary gearheads. For a long time, a simple gearhead, one with gears sandwiched between two plates, has been referred to as a spur gearhead. A planetary gearhead, also described as an epicyclic gearhead, is [...]

Original article date: June 1998 Bearings still fail at least once on average during a plant’s service life. Why? TONY HERRATY Engineering Manager of FAG (UK) explains how to avoid premature failures. The modern rolling bearing is a high reliability super precision component which transmits high specific loads with very low energy absorption. This is [...]

Original article date: June 2000 The performance capacity of linear bearings can no longer be measured simply in terms of their load carrying capacity, rigidity and accuracy. Due to economic and environmental pressures, there is a clear trend towards design solutions which run with little or no maintenance whilst achieving a long operating life. This [...]

Original article date: September 1998 Francheska Goddard Sales Director of Millennium Oils explains the development of an environmentally friendly pressure agent for oils and greases. DM-X technology developed by Goldberg and Associates represents a departure from current additive formulations by re-engineering conventional overbased calcium petroleum sulfonate to achieve an extreme pressure agent without using chlorinated [...]

Original article date: March 1999 TONY HERRATY Engineering Manager with FAG (UK) follows up his article last June on bearing failures with some remedies. The characteristic clues to a particular bearing problem are usually to be found within the damaged bearing. Analysis and correction of problems with bearings are made much easier if the bearing [...]

Original article date: November 1997 In special applications the seal or shield is increasing becoming an integral part of the bearing design rather than an extra which is added later. Bearing seals and shields have been available almost as long as ball bearings themselves. However, the move towards more integrated bearing structures has meant that [...]