Ring Gear

Ring gears have a diversified industry presence and are typically used in passenger cars, trucks, tractors, earth moving equipment, marine engines, lawnmowers, and industrial/power generation.



HZPT 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 Level 12 quality gears. Both inch and metric unit ring gears are available. Fine pitch gears are our specialty.


Ring Gear Specifications

Use 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 are available
Pressure Angle 14, 20 & 25 Degree Pressure Angle is available
Thickness Open up to 1.”
DP – Diametral Pitch Up to 250+ DP
Inside Diameter Open 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.
Applications We focus on providing ring gears to the satellite, military, and aerospace industries.
Quantities 10+
Lead Time The average lead time on ring gears orders is four weeks
Preferred Drawing Formats We prefer to accept CAD files of your designs in DXF format.


Industries Aerospace Gears
Defense Gears
Government Gears
Industrial GearsInstrumentation Gears
Medical Device Gears
Military Gears
Oil & Gas Gears
Materials Steel
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 SteelMolybdenum Steel
Nickel-Chromium Steel
Nickel-Chromium-Molybdenum Steel
Nickel-Molybdenum Steel
Silicon-Manganese Steel
Special Bearing Steel
Cast Iron
Standards 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.