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Wednesday, 19 April 2017
Thursday, 13 April 2017
How to Find Bearing Numbers by Size
Bearing part numbers help you to identify the type, size and general uses for a bearing. The part number is usually stamped or printed on the bearing. There are three different types of bearings. Ball bearings are loose spheres that separate the races in a bearing. Roller bearings are circular shaped and function the same way as ball bearings. A needle bearing uses rollers to reduce friction. Occasionally, you may need to replace a bearing, but...
Tuesday, 11 April 2017
A Lesson to Introduce Simple Machines
Six simple machines --- levers, wheels and axles, inclined planes, wedges, pulleys and screws --- have either one moving part, or none at all. Simple machines provide mechanical advantage, meaning they multiply the user's muscle power, making it easier to push or pull heavy objects, to lift them, or to shift the direction that the objects are moved.
Levers
Levers have two parts: a bar used for pushing and pulling force, and a fulcrum that...
