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Understanding How Bevel Gears Work

September 28, 2017

Understanding How Bevel Gears Work

Present in most mechanical equipment, gears are components with accurately cut teeth around the edges designed to transmit motion and force. Gears come in a variety of shapes and sizes to cater to specific processes and assemblies.


Bevel gears are set gears, which are often mounted on shafts on a 90-degree angle. This type of gear is widely used in locomotives, automobiles, power plants, steel plants and in a variety of other industries. It is also present in differential drives, hand drills, grain mills and other important equipment.


Bevel gears make it possible to change the operating angle.


They must be mounted carefully for excellent performance. Bevel gears can be constructed from a variety of materials including:


  • Cast iron which has excellent wearing properties
  • Steel which is durable enough to withstand harsh conditions
  • Cast steel for high stress settings
  • Plain carbon steel for environments where toughness and durability are required
  • Alloy steel which has high tooth strength and low tooth wear


There are different classifications of bevel gears depending on their geometry:


  1. Straight bevel gears are designed with a conical pitch surface and straight teeth that taper toward the apex.
  2. Spiral bevel gears have curved teeth and gradual, smooth tooth contact.
  3. Zerol bevel gears resemble spiral bevel gears, but have a low zero spiral angle.
  4. Hypoid bevel gears are similar to spiral bevel gears but have hyperbolic pitch surfaces.


At True Gear & Spline, we manufacture high quality gears and splines. We have vast experience in gear production and the technological expertise to provide the highest industry standard of gears and splines for your company.


We offer an extensive list of services including gear cutting, gear grinding and more. Dedicated to providing excellent customer service, we will craft excellent customized components for your business' specific projects. Call us today at 1-877-270-9985 for more info!