PBDM423-C20 Sanyo Denki
Wake Industrial LLC is not an authorized distributor of this product.
The Sanyo Denki PBDM423-C20 is part of the PB SANMOTION Servo Motors series and features a motor size of 42 mm square with a total length of 87.9 mm. This servo motor offers an allowable torque of 1.47 N·m, a gear ratio of 1:20, and a maximum backlash of 0.25 degrees. It has a protection grade of IP40 and an encoder resolution of 2000 pulses per revolution.
Internal Product Review
The PBDM423-C20 is a Sanyo Denki PB SANMOTION servo motor with a 1:20 gear ratio and 1.47 N·m allowable torque. Encoder feedback remains precise through 2000 P/R resolution, and 0.25 deg max backlash supports controlled positioning. IP40 protection adds practical durability for enclosed motion assemblies, making this unit a strong choice for compact servo applications.
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Product Description:
The PBDM423-C20 is a geared servo motor manufactured by Sanyo Denki for the PB SANMOTION Servo Motors series. This compact unit couples a 42 mm square motor to a precision gearbox so it can deliver controlled motion for pick-and-place heads, light conveyors, or indexing fixtures in industrial automation cells. By integrating the reducer with the motor, the assembly keeps its overall length short while providing the low-speed, high-torque output often required at the machine’s working axis.
The mechanical stage supports an allowable torque of 1.47 N·m, a radial shaft load of 20 N, and a thrust load of 15 N, allowing direct connection to light pulleys or small cams without excessive bearing stress. A maximum operating speed of 90 rpm corresponds to the gearbox ratio of 1:20, which multiplies motor torque while limiting output speed. Positional accuracy is aided by maximum backlash of 0.25°, helping maintain repeatable stops during step-and-repeat cycles. Feedback is provided by an incremental encoder with a resolution of 2000 P/R. With the gearbox ratio applied, each motor pulse represents approximately one-hundredth of a degree at the load side. The output shaft is configured for reverse rotation, matching actuator layouts that require clockwise motor motion to move the load counterclockwise. An IP40 housing shields the interior from large particles during indoor operation.
The encoder electronics operate from a 5 VDC supply with a tolerance of ±5% and draw up to 140 mA while transmitting position data. The signal channels can respond at up to 37.5 kHz, supporting quick servo control loops. The combined motor and gearbox length is 87.9 mm, and the assembly has a mass of only 0.48 kg, minimizing inertial loading on moving carriages. The stator has a 42 mm square frame, allowing direct mounting to brackets with a NEMA 17 pattern. Internal rotor inertia is 0.056 × 10⁻⁴ kg·m², giving the drive predictable acceleration characteristics without overshoot when tuned with compatible SANMOTION amplifiers.
