Spur Gears

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Precision Spur Gears
Precision Spur Gears

American Precision Gear Co., Inc. specializes in the custom manufacturing of tight tolerance internal and external custom spur gears. We work to your specifications and all critical contact surfaces are held to your tolerances (up to 0.0001"). We can provide you with AGMA Level 12 quality gears. Every spur gear we manufacture is put through our rigorous QA procedures. Both inch and metric unit spur gears are available.

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Spur Gear Specifications

Spurs Gears are the most common type of gear designed to transmit motion and power
No. of Teeth
Up to 197 teeth
Pressure Angle
Up to 25 Degree Pressure Angle (20 degree pressure angle is typical)
DP - Diametral Pitch
Up to 250 + DP for fine pitch spur gears
Outside Diameter
We specialize in small diameter spur gears, down to 0.05" Up to 48" outside diameter
Face Width
Up to 1" face width available inches
We specialize in holding very tight tolerances on your small Spur Gear designs. We can provide up to =/-0.0001"
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.
Providing spur gears to the aerospace, and biomedical and instrumentation industries. We have created gears small enough for use inside the human body to perform pumping functions.
We focus on high volume runs.
Lead Time
Average lead time on spur gear orders is 4-6 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
Bore Diameter
Up to 24" bored diameters available
Hub Options
Spur Gears are available in Hubbed or Hubless versions. Set screw and other locking mechanisms are available for Hubbed versions.
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, ANSI/AGMA 2001, AGMA 911-A94: Aerospace Gearing, AGMA 913-A98 Specifying the Geometry of Spur Gears, AGMA 926-C99: Carburized Aerospace Gearing, Medical Device Gears, Custom Aerospace Gears, Custom Robotics Gears, Custom Gear Supplier.

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