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The main cause for the limitation of gear durability in highly loaded and high speed working gears is scuffing. The principal way to avoid scuffing of tooth flanks is an oil- flm of sufficient thickness between the...

This paper presents the methodology used for testing materials with a worm gear set-up and with adisc roller machine. Several experimental results are discussed and analysed. A correlation between metallurgical analyses of the structure of bronzes and...

As progress continuallyplaces demands on thegeardesignerto makegearingthatissmaller, lighterand more reliable, thedemandfor bettergearmaterialsand heattreatprocesses increases.Properhardnessofagear,both inthetoothand in the body is becoming increasingly critical sinceload carrying capacity is dependenton hardness. The scope of this paperis limited to the mostcommon...

A significant characteristic of plastic gears when meshed with steel gears can be the differences in themmal expansion between the two materials. If a particular gear mesh is expected to operate satisfactorily over a wide thermal range,...

The combined mesh stiffness of spiral bevel gears is one important factor for dynamic analysis. The total deflection on the contact line of a tooth pair is composed of bending, shear and tooth contact deflections. The bending...

When naval ship propulsion gear teeth break, the affected teeth have been“field dressed", so that the units can be put back into service. Then the gears are rerated to a lower rating and used reliably, at least...

For gear systems and rlling element bearings, there are similar designations for the failures that are identified within their respective contact surfaces. By concentrating on the contact tribo system, it is possible to go beyond the appearance...

Reduction gears for frigates, corvetes, destroyers and submarines have to bereliable, durable, easy to maintain, small in size and as light as possible. In principle, there are two ways of reducing structure bome noise emission of gear...

This paper describes the design of a straight bevel gearset with the objective of minimizing the enclosed volume. The specifications for the design are the power requirements, the gear ratio, pinion speed and the material properties. The...