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Starter Ring Gears

Starter ring gears, engineered for high torque resistance and reliable engine starting.

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Starter Ring Gear Production

Preparing Raw Ring Gear Material

The raw steel material is rolled from a straight bar into a coiled form. The coiled steel material is then split or cut on a center-line point to separate the coil into individual ring blanks.

Next, the split point is welded together to form a completed ring, with the major diameter larger than the finished size.
Ring gear blanks

Ring Gear Turning & Precision Machining

The starter ring gear blanks are precision machined through a two step process. The first machining process, the inner diameter is manufactured to the required drawing dimension and finish. The second machining process creates the required dimensions for the outer face and diameter.

Ring Gear Tooth Hobbing

The next step of the manufacturing process is the tooth hobbing cycle. The hobbing tool cuts the ring gear tooth profile and shape into the outer diameter zone. All customer projects require a hobbing tool specific to their part number. This tooling is maintained for the life of the project.

Teeth Chamfering

After the teeth are formed, the product is ready for the chamfering phase. During this manufacturing phase, the chamfer tool cuts a sharp edge into the side of the ring that meshes with the mating shaft. Chamfering creates an easy mating engagement in this zone, which results in less mating friction for improved functionality.


After the ring gear machining, hobbing and chamfer manufacturing phases, the machined parts tend to have small burs and sometimes sharp edges. The deburring machine uses a two step process to remove the burrs – deburring wheel and nylon brush.


After these machining steps, the work pieces are covered in loose material chips, dust and other particles. During the cleaning phase, all foreign substances are removed from the material surface by using a high pressure operation with anti-corrosion oil.

Induction Hardening Treatment

During the induction hardening phase, the parts are heat treated to increase the tooth surface strength.


The last cleaning phase prepares the parts for a final tempering process.


At this point of the manufacturing cycle, the material surface has a highly structure – with a high level of internal stresses. Tempering improves the surface toughness and ductility by relieving internal stresses.

Final Product

We currently manufacture over 275 types of starter ring gears for OEM customers throughout the globe. Our starter ring gears range in size for 8″ – 36″.
Starter Ring Gears manufacturing


Alloy Steel
Carbon Steel
Ductile Iron
Gray Cast Iron
Stainless Steel


  • Automotive
  • Biotechnology
  • Construction
  • Defense
  • Electrical
  • Electronics
  • Heavy Equipment
  • Industrial Machinery
  • Marine
  • Medical Devices
  • Off-Highway
  • Pneumatics
  • Robotics


  • Broaching
  • Casting
  • Climb Hobbing
  • Conventional Hobbing
  • Forging
  • Grinding
  • Heat Treating
  • Honing
  • Flame Cutting
  • Lapping
  • Milling
  • Shaping
  • Shaving
Dependable Gear Manufacturing

The AmTech Edge in Gearing

AmTech is distinguished by its internationally recognized certifications, extensive expertise, and a comprehensive global manufacturing network, positioning it as a leading choice for specialized gear production.

Specialized Services

AmTech excels in delivering precision-crafted bevel gears, helical gears, plastic gears, ring & pinion sets, spur gears, and worm gears, leveraging advanced investment and die casting techniques, as well as expert machining and forging processes.

Focused Expertise

AmTech is committed to providing top-quality gears, including customized bevel, helical, plastic, ring & pinion, spur, and worm gears, catering to the specific needs of original equipment manufacturer (OEM) partners.

Global Manufacturing Network

Address supply chain complexities confidently with AmTech's integrated and expansive international production network.

Industry Experience

With two decades of specialized experience, AmTech offers unparalleled reliability in OEM gear manufacturing, ensuring premium quality and precision in every product.
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Your Questions, Answered

If you have a question about our starter ring gear services that isn’t listed here, please reach out to our expert team to discuss specifics of your project.
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