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  • Medical Device Link . Spotlight on Motors
    . Because it is fitted with a hollow shaft that allows access through the central axis of a motor, a component is suited for tight system integration. The size 23 single-stack dc stepping motor measures 2.25 in. diam by 2 in. long. Bidirectional, the motor is based
  • Direct Drive (DDR) Rotary Table Construction
    mechanical transmission elements and directly couple the payload to the drive. This makes rotary drives with high dynamic responses and no hysteresis possible. The large inner diameter of a torque motor is a big advantage in machine tool design. Large hollow shaft allows designers to design rotary
  • Steppers go shaftless
    backlash. Two Size 17 IOS motors accurately position pneumatic grippers that clamp test tubes filled with DNA fluid to within 0.001 in. The exploded view of the IOS motor shows the reversal of the rotor and stator and the hollow core construction. The graph shows the torque-versus-speed qualities
  • Pressure Washer Pumps: Belt Drive vs. Direct Drive
    A "Direct Drive" pump has a hollow shaft, which simply slides onto the drive shaft of a motor or engine. The flange on the pump is mounted to the face of the engine or shaft end of the motor. Normal gasoline engine speed is about 3450 RPM. Since the pump is connected directly to the engine shaft
  • Medical Device Link .
    A hollow-shaft stepper allows access for electrical and optical cables through the central axis of the motor. The 2.25-in.-diam motor is bidirectional and based on a 1.8 step with noncumulative position accuracy of +-3%. The peak torque rating is 50 oz-in. Other features include permanently

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