Spur gears are the most common Gear Types we offer. They have straight teeth, and are mounted on parallel shafts.  You should consider Ratio and Center Distance when designing these into your application.

Helical gears are one type of cylindrical gears with slanted tooth trace. Compared to spur gears, they have the larger contact ratio and excel in quietness and less vibration and able to transmit large force. A pair of helical gears has the same helix angle but the helix hand is opposite

Mechanical worm gear, cross section. Close-up. Modern mechanical equipment

Worm gears are usually used when large speed reductions are needed. The reduction ratio is determined by the number of starts of the worm and number of teeth on the worm gear. But worm gears have sliding contact which is quiet but tends to produce heat and have relatively low transmission efficiency. Popular Gear Types

Bevel gears are gears where the axes of the two shafts intersect and the tooth-bearing faces of the gears themselves are conically shaped. Bevel gears are most often mounted on shafts that are 90 degrees apart, but can be designed to work at other angles as well.  The pitch surface of bevel gears is a cone.


Sprockets run with chains.  NextDayGears makes all kinds of sprockets.  Roller Chain Sprockets,  Silent Chain Sprockets, Multi-Strand Sprockets etc.  We offer Extremely Fast Delivery options on all Sprockets and Machine Parts.

Timing Pulleys

NextDayGears makes all kinds for Timing Pulleys that run with different kinds of belts.  From standard HTD to Trapezoidal.  Flanged or unflanged.  And we can make the Timing Pulleys in Any material grade.