PBM603DCR50 Sanyo Denki
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The Sanyo Denki PBM603DCR50 is part of the PB SANMOTION Servo Motors series and has a flange size of 60 mm with a single D-shaped output shaft. It features a battery-less absolute encoder with 17-bit resolution and an IP40 protection rating. The motor has a maximum stall torque of 1.05 N·m, weighs 1.25 kg, and supports an allowable radial load of 120 N.
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Product Description:
The PBM603DCR50 is a compact AC servo motor produced by Sanyo Denki within the PB SANMOTION Servo Motors series. In automated machinery, the motor converts drive current from a matching amplifier into controlled rotational motion. This operation enables precise positioning, speed regulation, and quick acceleration of mechanical axes such as pick-and-place heads or miniature conveyors in assembly equipment.
When mounted on a machine frame, the motor can tolerate a radial force of 120 N, helping the bearings withstand belt or gear loading. At stall, the electromagnetic system delivers a maximum torque of 1.05 N·m, allowing short-term holding against static loads without overheating. The housing is rated IP40, providing protection against certain solid objects but no protection against water. Position feedback is provided by a batteryless absolute encoder with a 17-bit resolution of 131,072 P/R, enabling fine interpolation by the drive. The sensor and power conductors exit the rear through a lead wire with a connector, and the overall depth is 126.9 mm, allowing the motor to fit shallow gantry brackets. A rotor inertia of 0.559 × 10⁻⁴ kg·m² provides quick speed response when the motor is paired with low-mass tooling.
The mechanical interface uses a 60 mm square flange, and the single D-shaped output shaft provides positive coupling to small pulleys while preserving alignment. As a single-shaft design, the motor has no second shaft end for auxiliary equipment. For vertical axes that require emergency holding, the motor incorporates a non-excitation brake that engages automatically when power is removed. The shaft can tolerate an axial force of 14.7 N, helping prevent premature bearing wear during applications involving axial loading. The motor has a net mass of 1.25 kg, which limits the additional moving mass on high-speed pick-and-place heads. Its batteryless absolute encoder retains position information after power loss, eliminating the need for a homing cycle when operation resumes.
