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Pulling a Press Fitted Shaft From a Housing
A shaft with a threaded end can be removed without damage by using one of our slide hammer, manual Push-puller or hydraulic Push-pullers, in conjunction with the proper threaded adapter. Removal is easy! If the shaft to be removed has external threads, simply choose one of our female threaded
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Motor Designs To Survive Hostile Environments
variety of industrial and marine settings. The motors have been fitted with redundant shaft seals, O rings, hermetic cable feedthrough, pressure equalization and other waterproofing features. Together, these design features allow a step motor to answer a design engineer's need for a motor
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Ensuring Tight Seals (.pdf)
-. be answered in order to judge a. 4. sary to achieve labyrinth seal effec-. seal strip/abradable combination. tiveness. Thermal expansion, shaft. are: motion, tolerance stack-ups, and. Do the seal strips undergo. 3. 3. rub tolerance influence the radial. wear?. 6. clearance. Labyrinth seals experi
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Scanning for Ideas: A Motor Pump Built for Solar Power
the Ecocirc DC pump, a circulation pump that can be connected directly to photovoltaic cells. The design is based on a spherical motor, a concept invented by Laing. It consists of a hemispheric rotor and impeller that sits on a hard, wear-resistant ceramic ball. There are no conventional shaft bearings
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Magnetic fluids tackle tough sealing jobs
Ferrofluids provide hermetic sealing when mechanical seals won't do. Univ. of Mining and Metallurgy A basic magneticfluid seal has an annular, axially polarized permanent magnet contacting two stationary pole pieces, fluid, and the shaft. The parts create a closed magnetic circuit that holds
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Waterproof Step Motors Make Waves in Industry
fitted with redundant shaft seals, O rings, hermetic cable feedthrough, pressure equalization and other waterproofing features. Together, these design features allow a step motor to answer a design engineer's need for a motor that will not fail after even prolonged exposure to, or submersion in, most
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How to make bearings last in electric motors
Creating the best possible operating environment lessens the chance of premature bearing failure. Here are some basic guidelines. A deep-groove ball bearing installed on the output shaft of an acinduction motor. The motor end cap supports the bearing outer race. Characteristic fluting caused
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Avoiding Stick-Slip Chatter in Low-Speed Bearings
. Similar effects are also encountered with slow-speed sliding contacts in machine tools, metal cutting, squealing automobile brakes, household appliances, and shaft seals. The main culprits of stick-slip are low oil-film thickness and torsional vibration, both of which are described next. Friction