X4 Tools HOME GEAR PRODUCTS GEAR SERVICES CNC MACHINING ABOUT US CONTACT US Prev Next Home Gear Products Internal Gears & Splines INTERNAL GEARS & SPLINES Geartronics has produced a wide-range of internal gears and splines for use throughout industry for nearly 90 years. Internal gears and splines have teeth on the inside diameter of a hollow cylinder. The teeth of internal gears are of involute form; however, the profile is concave rather than convex as is the case with the involute profile of external gear teeth. Internal gears must mate with one or more external gears and their primary application is as a component of an epicyclic (planetary) gear arrangement. Internal gear teeth may be of the spur or helical form and the mating gear must be of the same type and have the axis of rotation situated parallel to that of the internal gear. Internal splines are generated using the same processes as internal gears and usually mate with shafts having external splines to transmit power and rotation in a single axis. The teeth of internal splines may be of various forms including involute, parallel and serrated. Internal Gear & Spline Experience Geartronics produces thousands of internal gears and splines annually made from plain carbon and alloy steel, stainless steel, aluminum, brass, and plastics primarily for use in planetary gear sets. We have manufactured internal gears and splines for customers from a number of industries, including: Aerospace Appliance Automotive Consumer Product Defense Food Processing Hand & Power Tools Industrial Equipment Machine Controls Medical Device & Equipment Motion Control Oil & Gas Request For Quote Ask a Technical Question INTERNAL GEAR & SPLINE MATERIALS Geartronics has the capability of producing internal gears and splines from a wide range of materials, including: Aluminum Brass Bronze Castings & Forgings Delron Ductile Iron Low Carbon Alloy Steel Low Carbon Steel Medium Carbon Alloy Steel Non-Metallic Nylon Phenolic Plastics Preheat Treated Steel Stainless Steels Tool Steel CONTACT US Geartronics Incorporated 100 Chelmsford Road North Billerica, MA 01862 Call Us: 978.663.6566 Copyright © 2020 Geartronics Incorporated. All rights reserved.