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  • Gear Tooth Form
    Gear tooth geometry is determined primarily by pitch, depth, and pressure angle. Standard pitches are usually whole numbers when measured as diametral pitch , the ratio of the number of teeth to the pitch diameter in inches. Coarse-pitch gearing has teeth larger than 20 diametral pitch -- usually
  • Gear Tooth Heating Application
    Application Description: A conveyor is feeding randomly spaced product to a reciprocating inserting station. Upstream, a motor is driving the conveyor carrying the product. The conveyor travels at various speeds depending on the product being transported. The insert must be properly placed and
  • Reciprocating Insert Applicator Machine and Gear Tooth Heating Application
    Application Description: A conveyor is feeding randomly spaced product to a reciprocating inserting station. Upstream, a motor is driving the conveyor carrying the product. The conveyor travels at various speeds depending on the product being transported. The insert must be properly placed and
  • Stopping tooth fractures before they start
    Modifying gear profiles increases fracture strength and prevents tooth fractures. University of Mining and Metallurgy The most common failures in high-performance gears are gear-tooth fractures. They often stem from fatigue cracks that start at the root of the tooth. Repeated bending loads widen
  • Planetary Gear Design
    A planetary gear system, also referred to as epicyclic gearing, consists of three elements - a sun gear, one or more planet gears, and a ring gear. The sun gear is located at the center, and transmits torque to the planet gears that orbit around it. Both are located inside the ring gear. The tooth
  • Tooth for Tooth: Gear Cutting (.pdf)
    Precise gear cutting doesn't come cheap. Until now it has been necessary to rechuck workpieces numerous times or use costly CNC lathes. But as the saying goes, 'it ain't necessarily so,” because EWS Werkzeugfabrik design engineers have developed, in collaboration with Gildemeister, a solution
  • Recognizing gear failures
    Failure modes typically have distinct features. Here's what to look for. Metal gears fail for numerous reasons, some, in part, independent from the gears themselves. Assessing gear damage can be a challenge, especially in industrial equipment. Unlike lab tests designed to isolate a particular
  • Gear Design: Breaking the status quo
    Traditional gear design limits the performance of mechanical drives. Direct gear design optimizes tooth profiles and significantly reduces contact and bending stresses. Significant parameters are shown here for two gears in mesh with equal base-circle pitch. Subscripts 1 and 2 are for the mating

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