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  • Gearing Up: The Ins-and-Outs of Gears
    Are all gears really alike? The answer is definitely no! There are four basic styles of gears. *Spur Gear: The spur gear has a helix angle of 0°. *Helical Gear: This is an angle toothed gear. The angle can vary from application to application usually between 1°-45°. *Worm Gear: Worm gears are found
  • Planetary reducers eliminate machining step to keep costs down
    as a parallel-shaft gearmotor. In another application involving an RV slide out, the 377:1 ratio planetary gearmotor routinely operates (intermittently) at output torques to 1,200 lb-in. The new planetary units target uses where less precision is acceptable but cost is important. The design meshes a sun gear
  • Sometimes it pays to be eccentric
    the flexspline, center, with the circular spline in two regions on opposite sides of the ellipse's major axis. Harmonic-drive pancake gears from Harmonic Drive Technologies, a Peabody, Mass., harmonic-gear manufacturer, are nearly flat for applications that require high reduction ratios in small packages

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