Category: Gears

No print? Worn sample? Weird geometry that makes everyone else nervous?

6/9/2026

We love a challenge.
For this project, our team took a customer-provided sample and reverse engineered it into a fully manufacturable component — balancing tight tolerances (within just a few thousandths), complex features, and heat treatment planning to make sure the final part performed exactly as intended.
Projects like these are why we do what we do: solving machining challenges and turning “can this even be made?” into “when do you need it?”
Got a challenging part that needs to be machined? A sample part with no drawing? A project others passed on? Send it our way — we’d love to take a look:

HM custom manufactured these 316 stainless gears for the aerospace industry.

4/4/2023

These pieces started out in our CNC lathe before moving over to our CNC gear hobber and were inspected before being electro-polished and inspected once more before shipping to the customer. Our new machines and vast capabilities allow us to have a solution for all your power transmission needs.

HM manufactured a fixed internal input gear designed specifically for a new gearbox.

3/23/2023

This part is made from 4340 steel and has 102 teeth along with thin shoulder pieces that were heat treated. To create this piece we used our CNC turning, gear shaping, grinding and lapping capabilities to finish the process.

HM manufactured an assembled gear piece for the robotics industry.

6/22/2022

Made from 4140 heat treated steel, this gear has a custom tooth profile and is timed to the mating gear. To create this product we used CNC turning, CNC hobbing, CNC milling, CNC grinding and assembly.

HM recently manufactured intricate gears that will be going into a gearbox assembly we’ve been working on.

1/25/2022

The part is an external output gear made in 4340 steel and hardened to a core hardness of 38HRC and to a case hardness of 58HRC. The part has 2 external splines that help drive the gearbox and will also have 3 bearings press fitted to this part during assembly.

We have manufactured a housing for a recent gearbox project.

7/15/2021

This piece is made of 6061-T6 aluminum, with a 72mm Bore for accepting a bearing. Upon completion of assembly, this will be the outermost layer of the gearbox, and has a 1/16-27 Tapered pipe thread with matching removable setscrew to allow application of grease or oil to the internal components of the gearbox.

Today we are showcasing our recent project- a bronze aluminum gear with a custom keyway.

12/3/2020

For all projects, big or small simple or complex, we utilize materials specific to your project needs.

HM Manufactured a custom filter wheel gear with 448 teeth, 32 diametral pitch with a width of only 3/16”!

7/14/2020

This intricate gear produced for the aerospace industry, has four recessed pockets in each one of the four windows, timed to a custom tapped linear pattern. To manufacture this gear, we utilized our CNC hobbing, CNC milling, CNC lathe, CNC grinding and lapping capabilities. On all projects big or small, complex or simple, we proudly offer our services from prototype to production.

HM manufactured a gear made from black delrin with a 14.5 pressure angle.

6/2/2020

This gear features 30 teeth and a tight tolerance bore. Additionally, we utilized our CNC hobbing, CNC turning, and honing capabilities to create this piece. From prototype to production, HM is proud to offer our services for each step of the process on projects big or small, simple or complex.

HM manufactured a 303 stainless steel gear with 67 custom profile teeth.

1/15/2020

To achieve this design and quality, we utilized our CNC broaching machine and custom cutters. This gear was then drilled and taped for a M6 setscrew between the teeth to attach to a matting shaft. We proudly offer expedited and standard lead times for all orders, simple or complex, from prototype to production.