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The upper and lower parts of the housing have a mating surface that seals perfectly the housing to avoid oil leaks and fatigue of the housing. A bathtub housing is made on a single piece and have a top opening for servicing the gear box and side opening to accommodate the bearing housing associated to the gear shafts. Have in general a better ...
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Laser and optical scanning wayside inspection devices (known as TBOGI—Truck Bogie Optical Geometry Inspection Systems) make images of the flange and tread. These measurements are compared with acceptable dimensions. When worn beyond limits, the wheels are scheduled for replacement. If beyond a safe level the axle set is removed from service.
Handheld inspection devices are very useful for this when the track is used heavily because they can be removed relatively easily. However, they are considered very slow and tedious, when there are thousands of miles of track that need an inspection. Rail inspection cars and HiRail trucks are the answer to today's high mileage inspection needs ...
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The outdrive resembles the bottom half of an outboard motor and is composed of two sub-units: an upper containing a driveshaft connected through the transom to an engine which transmits power to a 90-degree-angle gearbox; and the lower containing a vertical driveshaft receiving power from the upper unit gearbox, transmitted through another 90 ...
Three-speed sliding-gear non-synchronous transmission Non-synchronous "crash" gearbox; commonly used today in semi-trucks and tractors, and formerly used in automobiles pre-1950s. A non-synchronous transmission, also called a crash gearbox, is a form of manual transmission based on gears that do not use synchronizing mechanisms. They require ...
The technique is very sensitive and can detect tight cracks. Surface inspection can be performed both on ferromagnetic and non-ferromagnetic materials. [8] [9] Tubing inspection is generally limited to non-ferromagnetic tubing and is known as conventional eddy current testing.