BCH2 gearbox assortments. The gearbox adapter assortments for the Schneider Electric BCH2 servo motor are designed for mounting the servo motors of the BCH2 series with planetary gearboxes. The adapter assortment includes: an adapter plate, a shaft stub adapter (depending on the model based on the combination of servo motor and planetary gearbox), accessories for mounting the plate on the planetary gearbox, and accessories for mounting the servo motor.