DISCO dicing saw Theta-axis rotary motor D1900271

This is a THK precision rotary motor unit designed for use with DISCO dicing saws. The nameplate specifies model RBL36, serial number D1900271, with a manufacturing date of March 2019. The unit features a hollow-shaft design, allowing cables and vacuum lines to pass through the center. An external gear ring at the base facilitates rotation and angular positioning of the worktable (θ-axis). It offers high rigidity, minimal backlash, superior positioning accuracy, and rapid response—all of which are critical for ensuring consistent wafer alignment and dicing angles. The unit is well-sealed; the locking screws on the end face bear torque-verification markings, and the internal connectors are in excellent condition. This is an original component, free from any impact damage on the gear teeth or mounting surfaces. The rotor turns smoothly by hand without any abnormal noise. The unit has passed both power-on and rotational functionality tests and is ready for direct replacement of a faulty part. Please provide your equipment model and the specific part number to verify compatibility.