Bosch Rexroth R039034018 Belt Drive Gear Motor Adaptor

R039034018 FD:581 Belt Drive Gear Motor Adaptor is a Rexroth accessory that attaches a belt-drive gear motor to Bosch Rexroth CKK compact modules. The FD:581 designation (FD581) identifies this adaptor for belt-drive configurations with CKK modules in Rexroth's compact family. Some listings indicate the part is refurbished, and Radwell notes it has been discontinued by the manufacturer, which means current availability is limited to remaining stock from select distributors. In Rexroth's belt-drive accessory lineup, the adaptor provides a practical way to retrofit belt-driven actuation to CKK compact modules without replacing the entire drive train.