Ring Gears

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Assorted Ring Gears
Assorted Ring Gears

American Precision Gear Co., Inc. manufactures tight tolerance precision ring gears to your specifications. We have created custom ring gears for both OEM and aftermarket applications, and can produce the most complex ring gear designs. We work to your specifications and all critical contact surfaces are held to your tolerances (up to 0.0001"). Every ring gear we manufacture is put through our rigorous QA procedures. We can provide our clients with AGMA Level 12 quality gears. Both inch and metric unit ring gears are available. Fine pitch gears are our specialty.

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Ring Gear Specifications

Ring Gears are frequently used in aerospace and satellite applications or in any situation where it is necessary to convert torque.
No. of Teeth
Up to 197 teeth available
Pressure Angle
14, 20 & 25 Degree Pressure Angle is available
Available up to 1"
DP - Diametral Pitch
Up to 250+ DP
Inside Diameter
Available up to 48"
Outside Diameter
Available from 0.05" to 30" in gear outer diameter
Quality Control
Conforming to general Military Quality control requirements as follows: MIL-I-45208A, MIL-STD-45662A, ISO 9001:2000 compliant and ISO 13485 Medical Device Certification is pending.
We focus on providing ring gears to the satellite, military, and aerospace industries.
Lead Time
Average lead time on ring gears orders is 4 weeks
Preferred Drawing Formats
We prefer to accept CAD files of your designs in DXF format.


Aerospace Gears
Defense Gears
Government Gears
Industrial Gears
Instrumentation Gears
Medical Device Gears
Military Gears
Oil & Gas Gears
303 Stainless Steel
17-4 Stainless Steel
440 Heat Treated Stainless Steel
Carbon Steel
Chromium Stainless Steel
Chromium Steel
Chromium-Molybdenum Steel
Chromium-Molybdenum-Vanadium Steel
Chromium-Vanadium steel
High Strength Steel (Impact™, MicroTec®, WHS-100™)
High Temperature Steel
Manganese Steel
Molybdenum Steel
Nickel-Chromium Steel
Nickel-Chromium-Molybdenum Steel
Nickel-Molybdenum Steel
Silicon-Manganese Steel
Special Bearing Steel
Cast Iron
Able to meet AGMA quality level 12 for all gears (Precision 3), ANSI/AGMA 2001. Medical Device Gears, Custom Aerospace Gears, Custom Robotics Gears, Custom Gear Supplier.

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