33VM52-000-25 Pacific Scientific
Wake Industrial LLC is not an authorized distributor of this product.
The Pacific Scientific 33VM52-000-25 is a servomotor from the Low Inertia PMDC Servomotors series with a rated power of 54 watts and a rated speed of 3475 RPM. It operates at 24 VDC with a continuous stall torque of 22 oz-in and a torque constant of 5.3 oz-in per amp. The motor features a single-channel encoder with a 5 VDC supply and weighs 3 pounds.
Internal Product Review
The 33VM52-000-25 is a Pacific Scientific low inertia PMDC servomotor with 54 W rated power at 24 VDC. Low 400 uH inductance and 22 oz-in continuous stall torque support crisp response and stable low-speed control. This motor stands out as an efficient choice for demanding servo motion applications.
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Product Description:
The 33VM52-000-25 is a permanent-magnet DC servomotor built by Pacific Scientific for the Low Inertia PMDC Servomotors series. As a low-inertia actuator, it responds quickly to command changes and is used in automated pick-and-place units, small conveyor sections, and index tables that demand consistent velocity and torque control. The motor converts direct current into mechanical rotation, while its integrated feedback supports closed-loop control between the motion controller and the driven load. This arrangement provides stable operation in compact industrial equipment that requires responsive speed and torque adjustments.
At its nominal electrical input of 24 VDC, the motor sustains a shaft velocity of 3475 rpm while delivering 54 W of mechanical output. This operating point represents the continuous power region where the winding temperature remains within its allowable limit. When the load holds the rotor stationary, the motor can resist up to 22 oz-in of torque without thermal damage. During acceleration, each ampere supplied by the drive produces 5.3 oz-in/A of torque, allowing the control algorithm to translate current commands into predictable mechanical force. These operating values can be used when selecting a compatible power supply and gear reduction.
A back electromotive force of 3.92 V/kRPM returns voltage to the drive, so regenerative surges remain modest during rapid deceleration. The armature winding has an inductance of 400 µH, permitting a quick current rise while requiring the controller to filter switching edges. For brief movements, the circuit can carry a pulse current of 22 A, allowing the rotor to accelerate toward its no-load speed of 5865 rpm without saturation. Position data come from a single-channel optical encoder without an index channel, and the encoder produces sine-wave feedback. Its LED light source operates from a 5 VDC supply and draws 150 mA. With a mass of 3.0 lb, the motor adds little weight to lightweight axes used in high-cycle pickers and small gantries.
