Radial Stiffness of Combined Journal and Thrust Hydrostatic Bearing.

The paper presents the results of theoretical analysis of the effect of supply pressure and rotational speed on the radial stiffness of the integrated angular cylindrical–face hydrostatic bearings designed for precise technological devices. The obtained theoretical results were verified experimentally using the spindle system of the grinding wheel of cylindrical grinder

Apparatus facilitates high-temperature tensile testing in vacuum

An apparutus for heating refractory materials to high temperatures during tensile testing includes a water-cooled stainless steel vacuum chamber. This contains a resistance heater consisting of a slit tube of tantalum or tungsten to enclose the tensile test rod