a high pressure grinding roll, often referred to as hpgrs or roller press, consists out of two rollers with the same dimensions, which are rotating against each other with the same circumferential speed. the special feeding of bulk material through a hopper leads to a material bed between the two rollers. the bearing units of one roller can .
aircraft engines may have a spline upon which mounts the propeller. there may be a master spline which is wider than the others, so that the propeller may go on at only one orientation, to maintain dynamic balance. this arrangement is commonly found in larger engines, whereas smaller engines typically use a pattern of threaded fasteners instead.
in diamond turning, a computer-controlled lathe with a diamond-tipped tool is used to make precision optical surfaces in glass or other optical materials. unlike conventional optical grinding, complex aspheric surfaces can be machined easily. instead of the dovetailed ways used on the tool slide of a metal-turning lathe, the ways typically .
high salvington windmill is a post mill with a single storey roundhouse. the mill rotates on a solid oak post which is in turn supported by a trestle of heavy pine quarter nars supported on two crosstrees, themselves resting on four brick piers. the trestle is protected by a wooden roundhouse, modelled on the pre-1907 structure. on top of the .
roller grinding. in a roller grinder, the beans are ground between pairs of corrugated rollers. a roller grinder produces a more even grind size distribution and heats the ground coffee less than other grinding methods. however, due to their size and cost, roller grinders are used exclusively by commercial and industrial scale coffee producers.
thorp mill is an historic building located in thorp, washington, united states.. on november 23, 1977, the thorp mill was placed on the national register of historic places.. the landmark is maintained by the thorp mill town historical preservation society, which aims to preserve the mill for the benefit of the local community and to make it available for the benefit of people seeking to .
roll forming, also spelled roll-forming or rollforming, is a type of rolling involving the continuous bending of a long strip of sheet metal typically coiled steel into a desired cross-section.the strip passes through sets of rolls mounted on consecutive stands, each set performing only an incremental part of the bend, until the desired cross-section profile is obtained.