For more than 60 years, Forest City Gear has crafted a legacy of excellence in precision gear manufacturing, leveraging advanced techniques and cutting-edge technology to earn the business of customers as exclusive as NASA. At the heart of the company’s technology-focused philosophy lies a long-time relationship with Sunnen Products Company, a leading manufacturer of honing systems, tooling, and accessories. The relationship helped Forest City set itself apart as one of the world’s most precise gear makers, and now the company’s parts are found on everything from fishing reels to the Mars Rovers.

As the automotive industry continues to move towards e-mobility, the manufacturing world is adapting to the respective requirements. Large gear ratios are necessary to reduce the high input speeds of electric motors to the required speed of the drive wheels. At the same time, masking noise of combustion engines is now missing, posing challenges to the noise level of transmissions. Principally, two main transmission concepts have become established for e-drive applications: two-stage layshaft transmissions with four gears, and planetary transmissions.