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  • How to make bearings last in electric motors
    ruined when a motor is used improperly. For example, the deep-groove ball bearings optimized for in-line couplers can overload if motors fitted with them drive a belt pulley. Likewise, motors containing roller bearings for heavy belt loads may prematurely fail when run with an in-line coupler
  • Wedge drives precision elevator
    . "The inclined-plane approach offers superior performance to traditional -axis stages, " says Alan Petersen, Primatics' president. "The PZA offers a lower profile and easy access to all sides of the load. " Using a frameless motor eliminates a motor coupler and external motor, which reduces the table
  • Riveter harnesses inertia
    design for its new Servo Rivet Setter. It uses energy stored in a spinning roller screw, one with more mass than a typical roller screw, to move a plunger/punch that drives rivets. A pushrod connects the screw and plunger and a servomotor turns the screw via a belt drive. The motor produces relatively
  • What to look for in a servocoupling
    improved corrosion resistance and double the torque capacity and stiffness of comparable aluminum parts. However, small drive motors can have trouble accelerating the added mass and inertia. Multiple-beam couplings work best for such light-duty applications as connecting a servomotor to a leadscrew

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