Free Standards Download

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...

Previously known calculation methods permit the compen-sation of nominal ~ actual deviations on flank surfaces of spi-ral bevel and hypoid gear sets on the basis of correction matrixes.' These are expanded forms of well known pro-portional changes,...

Face milling and face hobbing are the two principal processes used in the production of bevel and hypoid gears. A manufacturer must decide on one or the other. This paper defines the methods and the inherent characteristics...

Processes in chemical industries and power plant stations require to a certain extent variable speed drives of high power capacity. In contrast to controlled hydrodynamic or friction clutches a new system of hydrostatic controlled superimposed planetary gears...