PBM603DGBA20 Sanyo Denki
Wake Industrial LLC is not an authorized distributor of this product.
The Sanyo Denki PBM603DGBA20 is part of the PB SANMOTION Servo Motors series and features a low-backlash gear type with a gear ratio of 1 to 7.2. This motor has an allowable torque of 2.5 Newton meters and an encoder resolution of 800 pulses per revolution. The motor weighs 1.22 kilograms and supports a maximum allowable radial load of 100 Newtons.
Internal Product Review
The PBM603DGBA20 is a Sanyo Denki PB SANMOTION servo motor with a low-backlash gear train and a 1:7.2 gear ratio. Precise motion characteristics come through clearly in the 800 P/R encoder resolution and 0.25° max backlash, making this unit a strong choice for controlled positioning duty.
To contact sales for pricing and lead time:
Payment Methods
Shipping Methods
Our Credentials
Product Description:
The PBM603DGBA20 is a geared servo motor produced by Sanyo Denki as part of the PB SANMOTION Servo Motors series. The unit pairs a compact brushless rotor with an integrated low-backlash planetary reducer, allowing direct mounting on index tables and small pick-and-place arms. In industrial automation, it receives current-controlled commands from a matching amplifier and turns them into precise shaft motion, supporting repetitive positioning tasks that demand high accuracy while limiting mechanical play.
The reducer employs a gear ratio of 1:7.2, so 7.2 motor revolutions deliver one output turn, multiplying torque while reducing speed for controlled indexing. Continuous output is limited to 2.5 N·m, which is the maximum load that can be applied continuously without exceeding the thermal limits of the gearing. Positional uncertainty is held to a maximum of 0.25 degrees by the low-backlash design, which minimizes lost motion during reversals. A quadrature encoder with a resolution of 800 P/R reports shaft position to the drive, enabling fine interpolation of motion profiles. The bearing seats tolerate a radial force of 100 N, allowing belt tension or overhung pulley loads to be applied without premature wear.
Output speed is limited to 250 rpm to keep noise, vibration, and gear losses within acceptable levels during continuous operation. The thrust bearing can withstand up to 30 N along the shaft axis, accommodating moderate screw-driven or vertical loads. The assembly has a mass of 1.22 kg, so it adds little weight to moving machine elements. The rotor has a moment of inertia of 0.4 × 10⁻⁴ kg·m², supporting rapid acceleration and deceleration. The motor is built on a 60 mm square frame, rotates in the forward direction by default, and does not have a Z-phase index output, so homing routines must rely on incremental counts.
