As part of our locomotive programs and also just because, we produce our own high quality precision gearboxes. Each gearbox bearing surface is ball bearing designed for uber smooth and reliable long term operation. Gears are currently all NWSL. Housings are precision designed and printed in a special lubricant tolerant high resolution nylon. While we do keep a very small inventory of gearboxes on hand, sometimes special orders are required. We can also custom design a gearbox to suit your need or axle diameters.