33VM52-000-20 Pacific Scientific
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The Pacific Scientific 33VM52-000-20 is a PMDC servomotor from the Low Inertia PMDC Servomotors series featuring a 24 V input voltage and a rated current of 6.2 Amps. It uses a hollow rotor design with Alnico V-7 magnet material and is equipped with carbon brushes. The primary shaft diameter is 5/16 inch and the motor is not fitted with forced-air cooling.
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Product Description:
The 33VM52-000-20 is a permanent-magnet DC servomotor produced by Pacific Scientific for the Low Inertia PMDC Servomotors series. Within industrial automation, it supplies controllable torque and rapid response for indexing tables, small actuators, and pick-and-place devices. By combining a lightweight rotor with surface-mounted field magnets, the motor minimizes rotational inertia so a drive can change speed or reverse direction with minimal delay while maintaining tight velocity and position loops in compact machine axes. This behavior is useful on compact axes that must start, stop, and reverse frequently during repetitive machine cycles in automated equipment.
This model operates from a supply of 24 V and draws a continuous armature current of 6.2 A. Those values describe the steady electrical load that the paired servo amplifier must supply. Motion reliability is supported by carbon brushes that slide on the commutator and tolerate frequent cycling without excessive wear. Field flux derives from Alnico V-7 magnets, giving stable magnetic density over a wide temperature range and eliminating the need for field excitation windings. A hollow rotor keeps mass low, shortening acceleration times, and the design uses no forced-air cooling so copper losses are dissipated through frame conduction. This arrangement suits enclosures with limited airflow and servo loops that benefit from quick dynamic response.
Mechanical output is available on two shafts. The primary end has a diameter of 5/16 in for coupling to pinions or timing pulleys, and the opposite end provides a 1/4 in secondary stub that can carry minimal-load accessories such as tachometer wheels. Feedback hardware is intentionally omitted, with no attached encoder provided for the optical encoder interface, so position or speed sensing must be handled by external devices if required.
Frequently Asked Questions about 33VM52-000-20:
Q: What is the input voltage requirement for the 33VM52-000-20 servomotor?
A: The 33VM52-000-20 motor operates with a 24 V input voltage, making it compatible with low-voltage power supplies.
Q: What type of brushes are equipped in the 33VM52-000-20 servomotor?
A: This model uses carbon brushes, which provide reliable electrical contact for the motor operation.
Q: What magnet material is used in the 33VM52-000-20 servomotor?
A: The 33VM52-000-20 has an Alnico V-7 magnet, ensuring consistent magnetic field performance.
Q: Does the 33VM52-000-20 servomotor include forced-air cooling?
A: This motor does not employ forced-air cooling, relying instead on natural convection for temperature management.
Q: What are the shaft diameters of the 33VM52-000-20 servomotor?
A: The primary shaft diameter is 5/16 inch, and the secondary shaft diameter is 1/4 inch for this model.
