Rossi MR 21 125 UP2A gearmotor EURO 2800

Rossi gearmotor composed of MR 21 125 UP2A gearbox and three-phase asynchronous motor

1. General Description

The Rossi gearmotor, composed of the MR 21 125 UP2A gearbox and a three-phase asynchronous motor, is a unit designed to provide an effective combination of speed reduction and torque transmission for industrial applications. This machine, being used, represents an excellent opportunity to obtain a high quality solution at a lower cost than new. Its robustness and reliability make it an advantageous choice for multiple applications.

2. Visual Appearance and Construction

Visually, the Rossi gearmotor with MR 21 125 UP2A gearbox presents itself as a solid and well-designed unit. The MR 21 125 UP2A reducer is characterized by a compact and robust structure, usually made of aluminum alloy or steel to ensure durability and resistance. The surface is generally gray or blue in color, with painted finishes that offer protection against corrosion.

Components:

• MR 21 125 UP2A reducer: Metal body, planetary or worm gears, protective covers.
• Three-phase asynchronous motor: Cylindrical body with external cooling fans and electrical connection terminals.

3. Measurements and Technical Data

• Rossi MR 21 125 UP2A reducer:

  • Type: Planetary or worm gearbox.
  • Dimensions: Exact specifications not always available online, but generally compact to fit in tight spaces.
  • Gear Ratio: Typically varies by model, but often around 25:1 or 50:1, depending on application needs.
  • Max Input Load: Usually indicated in Nm (Newton-meters) or kNm (kilonewton-meters).

• Three-Phase Asynchronous Motor:

  • Power: 3 kW or 3.6 kW (variable power depending on the version).
  • Revolutions per Minute: 1450 rpm.
  • Operating Frequency: 50 Hz and 60 Hz.
  • Motor Type: Three-phase asynchronous motor designed to operate on three-phase alternating current.

4. Mechanical Characteristics

• Transmission Efficiency: The MR 21 125 UP2A reducer is designed to offer high efficiency with reduction of vibrations and noise, thanks to the quality of the materials and the precision of assembly.
• Maximum Torque: Maximum torque varies depending on the gear ratio and engine power. Usually, it can reach significant values, compatible with demanding industrial applications.
• Input and Output Speed: The speed of the output shaft depends on the gear ratio and engine speed. For example, with a 1450 rpm engine and a 50:1 ratio, the output speed will be approximately 29 rpm.

5. Procedure for Use

To use the Rossi gearmotor with MR 21 125 UP2A gearbox:

1. Installation: Mount the gearmotor on a stable base using the mounting flanges. Make sure the alignment between the motor and the gearbox is correct to avoid premature wear.
2. Electrical Connection: Connect the motor to the three-phase electrical network, making sure that the voltage and frequency correspond to the motor specifications (50 Hz or 60 Hz).
3. Gearbox Configuration: Adjust the gearbox to obtain the desired gear ratio. This may require the use of interchangeable gears or adjustment of other internal components.
4. Startup and Test: Start the engine and monitor the operation of the gearmotor. Check for vibrations and abnormal noises and check that all components work as expected.

6. Matching Accessories

• Replacement Gears: To adapt the gearbox to different transmission needs.
• Cooling Devices: If the gearmotor operates in high temperature environments or for high intensity applications.
• Speed ​​and Torque Sensors: To monitor the performance and regulate the operation of the gearmotor.
• Mounts and Mounts: To ensure proper installation and alignment.

7. Mathematical Formulas for Optimal Operation

• Torque (T):

  $$T$$

  Where:

  • TT $T$ = Torque (Nm)
  • PP $P$ = Motor power (W)
  • ω\omega $\omega$ = Angular velocity (rad/s)

• Angular Velocity (ω):

  $$\omega$$

  Where:

  • ω\omega $\omega$ = Angular velocity (rad/s)
  • nn $n$ = Engine speed (rpm)

• Gear Ratio(s):

  $$i$$

  Where:

  • ii $i$ = Gear ratio
  • NinputN _{\text{input}} $Ninput$ ​=
  • NoutputN _{\text{output}} $Noutput$ ​=

8. Workable Materials

The Rossi gearmotor with MR 21 125 UP2A gearbox is suitable for a variety of industrial materials and applications, including:

• Metals: For manufacturing and assembly processes.
• Plastics: In manufacturing and handling applications.
• Wood: For the processing and production of wooden components.
• Composite Materials: In sectors requiring high precision.

9. Maintenance and Control of Good Used Products

• Visual Inspection: Check for signs of wear, external damage and lubricant leaks. Make sure all components are in good condition and free of corrosion.
• Lubrication Check: Check that the gearbox and motor are well lubricated. Replace the oil as necessary according to the manufacturer's recommendations.
• Operation Test: Perform load tests to verify that the gearmotor operates without vibrations and abnormal noises.
• Maintenance Documentation: Check the service and maintenance documentation to ensure that the gearmotor has been properly maintained.

10. Sectors of Use

The Rossi gearmotor composed of the MR 21 125 UP2A gearbox and the three-phase asynchronous motor is used in various sectors, including:

• Industrial Automation: To operate machines and production lines.
• Transmission Systems: In mechanical transmission and speed reduction applications.
• Textile Sector: For the movement and control of textile processes.
• Food Industry: For the handling and processing of materials and production equipment.

11. Advantages of Buying Used

• Lower Cost: Used gearmotor offers an excellent savings opportunity compared to purchasing a new unit.
• Reliability: If well maintained, a used gearmotor can guarantee performance comparable to that of a new one.
• Immediate Availability: Buying used reduces waiting times for delivery, allowing rapid replacement or start-up of operations.