The design, gear ration analysis and manufacturing of fine- and medium-pitch gears take place here. St. Louis Gear has been in business since 1943 as a gear manufacturer specializing in bevel gears, helical gears, spur gears plus worm wheel and worm gears. Custom cutting to AGMA Class 12. It is our mission to offer complete customer satisfaction through superior service and value, unequaled by our competitors. Let us meet your gear requirements today. Call or visit us online for details.