HM Manufacturing is a manufacturer of custom gears produced to meet all your specifications and requirements. HM gears, are a reliable product to transmit power and to change the speed, torque, and direction of a power source for all your individual applications and needs. Our highly experienced team and state of the art facility allow for high volume production runs, prototypes and above all, quality gears. Our modern inspection department and quality control methods assure all products conform to your standards and are made to optimize production.
At HM we produce helical gears, spur gears, chain gears, internal gears and pawl & ratchet gears. Custom Gears can range in size from 3/4”-24” and are available in multiple pressure angles.
Spur Gears are used specifically to transmit rotary motion between parallel shafts, while maintaining consistent speed and torque. The involute tooth form allows high precision and tight tolerances to be achieved. A spur gear is a straight cut gear, parallel to the bore and rotating axis of the gear. Spur gears are the most common & cost-effective, and provide efficiency to transmit motion and power between parallel shafts.
Helical gears are cylindrical gears with a slanted tooth trace. They are quieter and smoother because of less vibration when in play. As a result of the way the helical gears are shaped, the helical gear is most efficient in projects with a high power to weight ratio. Helical gears are great for replacing spur gears in an application where more power is required, such as automotive.
Chain sprockets are a profiled gear with teeth that mesh with a chain to form a single unit. At HM we produce bushed sprockets, steel split sprockets, double single sprockets and Idler sprockets/Chain tensioners. A chain sprocket is mostly used for applications in automotive and machinery to transmit rotary motion between two shafts where gears are unsuitable. Chain sprockets also have the advantage of being nearly silent while also have the capability to be run at high speeds.
Pawl & Ratchet
Ratchets composed from gears are typically round and are made of uniform but asymmetric teeth. The pawl is pivoting, spring-loaded finger that engages the teeth and keeps the unit moving in a single direction. Together the pawl and ratchet transmit power moving in one specific way. Pawl and ratchets are usually used in the aerospace and automotive industry, or for any application in which the gear is only supposed to rotate in one direction.
The internal gear has teeth machined on the interior surface of the gear. Internal gears are made for applications involving planetary gear drives and gear couplings since these gears have the ability to work on the inside of another gear. Our internal gears are made for tight tolerance applications with high precision. Internal gears are used in applications that require better load carrying capability due to its strong and effective shape. Internal gears are greatly used since they have reduced sliding action which improves gear longevity and tool life.
HM Manufacturing Order Processing Advantages
We encourage our customers to place 12 month blanket purchase orders to accommodate for annual requirements. This in turn allows us to hold materials exclusively for our customer and can usually be dispatched within one business day.
Custom Gear Materials
Stainless Steel for Custom Gears
Custom Aluminum Gears
Custom Plastic Gears
Ketron (Food Grade)
Nylatron GSM (All colors)
Nylon (All colors)
PEEK 1000 (Food Grade)
Steel for Custom Gears
1018 (HR, CF)
1045 (HR, CF, TG&P)
1117 (HR, CF)
1141 (CF, Q&T)
1144 (HR, CF, Q&T)
Stressproof A311 Custom Gears
Fatigueproof Custom Gears
Custom Alloy Gears
4140 (HR/CF Annealed, Q&T, TG&P)
9310 (Aircraft grade)
Custom Bronze Gears
954 Aluminum Bronze
Contact us today for information and inquires about our Custom Gears