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  2. 20 useful and innovative gadgets to make life easier for ...

    www.aol.com/lifestyle/products-to-make-life...

    The phone itself is quite affordable, and service plans start at just $20 per month. While it’s not the most capable smartphone available, it is a great option for seniors looking for the basics ...

  3. Gear housing - Wikipedia

    en.wikipedia.org/wiki/Gear_housing

    The gear housing is a mechanical housing that surrounds the mechanical components of a gear box.It provides mechanical support for the moving components, a mechanical protection from the outside world for those internal components, and a fluid-tight container to hold the lubricant that bathes those components.

  4. Non-circular gear - Wikipedia

    en.wikipedia.org/wiki/Non-circular_gear

    Non-circular gear example Another non-circular gear. A non-circular gear (NCG) is a special gear design with special characteristics and purpose. While a regular gear is optimized to transmit torque to another engaged member with minimum noise and wear and with maximum efficiency, a non-circular gear's main objective might be ratio variations, axle displacement oscillations and more.

  5. Bevel gear - Wikipedia

    en.wikipedia.org/wiki/Bevel_gear

    Bevel gears are most often mounted on shafts that are 90 degrees apart, but can be designed to work at other angles as well. [1] The pitch surface of bevel gears is a cone, known as a pitch cone. Bevel gears change the axis of rotation of rotational power delivery and are widely used in mechanical settings. Bevel gear on roller shutter door.

  6. The best stationary bikes for seniors in 2025 - AOL

    www.aol.com/lifestyle/best-stationary-bikes...

    Staying active is crucial for seniors' health and well-being, but traditional forms of exercise can become challenging with age. Outdoor cycling, for instance, might lose its appeal due to ...

  7. Layshaft - Wikipedia

    en.wikipedia.org/wiki/Layshaft

    The layshaft is the gear-carrying shaft that links the wallower (the small spur gear driven at increased speed by the waterwheel) to any upright shafts that carry the millstones. The term, layshaft, was also used by millwrights , in both wind- and watermills, to refer to a shaft that drove secondary machinery such as sack hoists, rather than ...

  8. Spur gear - Wikipedia

    en.wikipedia.org/wiki/Spur_gear

    Spur gears or straight-cut gears are the simplest type of gear. They consist of a cylinder or disk with teeth projecting radially. They consist of a cylinder or disk with teeth projecting radially. Viewing the gear at 90 degrees from the shaft length (side on) the tooth faces are straight and aligned parallel to the axis of rotation .

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    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!