OM ORIENTAL MOTOR E3421-444 REVERSIBLE MOTOR 50/60HZ 100V

OM ORIENTAL MOTOR E3421-444 REVERSIBLE MOTOR 50/60HZ 100V

Product Identification

• Manufacturer: Oriental Motor Co., Ltd. (A leading Japanese manufacturer of precision motors and gearheads).

• Model: E3421-444

• Type: Reversible Motor (Specifically, this is a Reversible AC Geared Motor).

• Voltage: 100V AC (Designed for the standard Japanese single-phase mains voltage).

• Origin: Made in Japan.

Product Description

The Oriental Motor E3421-444 is a single-phase, capacitor-start, reversible AC induction motor integrated with a gearhead (speed reducer). The “444” suffix specifically denotes the gear ratio.

1. Motor Type (Reversible Motor):

• Function: It can change its direction of rotation (Clockwise/Counterclockwise) instantly by switching the connection of its control leads. This is done using a simple DPDT (Double-Pole, Double-Throw) switch or a relay/controller in a circuit.

• Construction: It uses two windings (main and auxiliary) with a capacitor to create the rotating magnetic field necessary for startup and reversal.

• Control: Comes with 3 lead wires (typically color-coded: Red, White, Black) for easy connection to a forward/reverse switch.

  • Red: Common

  • White: Forward

  • Black: Reverse

2. Key Specifications:

• Motor Frame Size: 70mm square flange.

• Output Power: Likely in the range of 6W to 25W (1/125 to 1/30 HP).

• Gearhead Type: Spur gearhead (known for durability and cost-effectiveness).

• Gear Ratio “444”: This is a 1:144.3 gear ratio. (Note: In Oriental Motor’s old numbering, “444” often corresponded to a 144.3:1 ratio. The “444” might also indicate specific torque/output speed characteristics).

• Output Speed: At 100V, 50Hz or 60Hz input, the output speed will be the motor’s synchronous speed (e.g., 1500 rpm at 50Hz, 1800 rpm at 60Hz) divided by the gear ratio. Example: ~10.4 rpm at 50Hz or ~12.5 rpm at 60Hz for a 144.3:1 ratio.

• Output Torque: The gearhead significantly increases available torque while reducing speed. Torque ratings are typically in the range of 10 N·m to 50 N·m, depending on the exact model configuration.

• Output Shaft: Likely a keyed shaft (with a flat) or a pinion/dimple shaft for positive drive connection.

3. Key Features & Applications:

• Features:

  • Instantaneous Forward/Reverse Operation.

  • High Starting Torque due to capacitor-start design.

  • Electrically Braked: Stops quickly when power is cut (compared to a non-brake motor).

  • Durable Gearhead: Designed for frequent start-stop and reversing cycles.

  • Maintenance-Free: Pre-lubricated, sealed construction.

• Typical Applications (Industrial Automation):

  • Opening/closing mechanisms (doors, dampers, shutters).

  • Positioning of small tables or jigs.

  • Lifting/lowering devices.

  • Reversing conveyors.

  • Valve actuation.

  • Packaging machinery.

  • Material handling equipment.