ISO 9001Ventura, California
Precision
Gear
Design & Manufacturing
Design, manufacture, and inspection of fine and medium pitch gears for aerospace, robotics, medical, and high-reliability systems.
Design Setup Manufacture Inspect
Hobbing, Shaping, and Milling
We utilize hobbing, milling, generating, and 3D printing to produce commercial-grade gears for instruments, machine tools, and power transmission, as well as higher-quality gears for advanced applications. From spur and helical to sprocket, ratchet, worm and worm gear, rack, spline and bevel gears.
Inspection
Measurement over Pins (MOP) and Measurement over Wires (MOW) are common methods used to assess gear dimensions. Dual flank testing with devices such as the Vari-Roll provides additional insights into gear accuracy and performance, while span measurement and other similar techniques help evaluate various gear parameters. When these methods are combined with comprehensive dimensional checks using a Coordinate Measuring Machine (CMM), you can achieve a complete and detailed picture of both gear and blank quality. This integrated approach helps ensure that gears meet all required specifications and performance standards.
AGMA and ISO Tolerances
Tolerances can be measured in our Microgear system and deliver reports. We use NIST calibrated measuring instruments and maintain our membership with AGMA, ensuring access to the latest industry standards and advancements in gear technology.
Quality Shop
We follow ISO 9001, demonstrating our commitment to rigorous quality management.
Need Inspection Support or Reverse Engineering?
What We Do
Design
Setup
Manufacture
Inspect
Evolvent Design combines advanced engineering capability with a fully equipped gear machine shop — a rare combination. We serve aerospace, robotics, medical, and instrumentation clients who need gears that perform without compromise.
Our Gear Shop
Hobbing, milling, generating, and 3D printing for commercial and precision gears. Spur, helical, worm, rack, spline, and bevel.
- Gear hobbing — fine & medium pitch
- Gear shaping & generating
- 3D printing for rapid prototype
- ISO 9001
Gear School
Advanced design skills paired with a fully equipped gear shop — a rare combination. Accelerate your gear knowledge with hands-on guidance.
- The Law of Conjugate Action
- Free calculators & 3D generators
- One-day course in Ventura, CA
- Hands-on hobbing & shaping
Setup
Programming manual machines with change gears can be challenging without a solid understanding of the process and the math
Simplify the process of determining change gears for any machine tool. Our Change Gear Calculator helps you match change gears to achieve a precise machine ratio, transmitting the exact gear ratio between input and output shafts. Standard and reverted gearboxes use 2, 4, 6, or 8 gears for this purpose, and you’ll find common solutions for 4-gear double reduction gearboxes here. Our tools also support a wide range of brands, including Pfauter, Niles, Lorenz, Maag, Jones & Lamson, Barber Coleman, Stanko, Mikron, Fellows, Almhults Bruk AB, Adams, Brown & Sharpe, and more. Simply enter your available change gear assortment and desired ratio into GearCalculators.com to generate a set of change gears that delivers your target ratio.
For proper gear lubrication and crossover for older oils this is the place.