Rossi MR 21 125 UP2A gearmotor EURO 2800

Rossi Gearmotor Consisting of MR 21 125 UP2A Reducer and Asynchronous Three-Phase Motor

1. General Description

The Rossi gearmotor, consisting of the MR 21 125 UP2A gearbox and a three-phase asynchronous motor, is designed to provide an effective combination of speed reduction and torque transmission for industrial applications. This used machine 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 a variety of applications.

2. Visual Appearance and Construction

Visually, the Rossi gearmotor with MR 21 125 UP2A gearbox appears to be a solid and well-designed unit. The MR 21 125 UP2A gearbox features a compact and robust structure, typically made of aluminum alloy or steel for durability and strength. The surface is generally gray or blue, with painted finishes that offer protection against corrosion.

Components:

• MR 21 125 UP2A reducer: Metal body, epicyclic 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 gear reducer.
  • 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 given 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 reduced vibration 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 motor power. Typically, it can reach significant values, compatible with demanding industrial applications.
• Input and Output Speeds: The output shaft speed depends on the gear ratio and the 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 reducer:

1. Installation: Mount the gearmotor on a stable base using the mounting flanges. Ensure proper alignment between the motor and the gearmotor to avoid premature wear.
2. Electrical Connection: Connect the motor to the three-phase electrical network, making sure that the voltage and frequency match the motor specifications (50 Hz or 60 Hz).
3. Gearbox Setup: Adjust the gearbox to achieve the desired gear ratio. This may require the use of interchangeable gears or adjustments to other internal components.
4. Startup and Test: Turn on the engine and monitor the gearmotor's operation. Check for any abnormal vibrations or noises, and ensure all components are functioning 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 performance and adjust the operation of the gearmotor.
• Brackets and Mounts: To ensure proper installation and alignment.

7. Mathematical Formulas for Optimal Operation

• Couple (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)

• Transmission Ratio(s):

  $$i$$

  Where:

  • ii $i$ = Transmission ratio
  • NingressoN_{\text{ingresso}} $N$ ingresso ​=
  • NuscitaN_{\text{uscita}} $N$ uscita ​=

8. Workable Materials

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

• Metals: For machining 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 Used Goods

• 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. Change the oil if necessary according to the manufacturer's recommendations.
• Operation Test: Perform load tests to verify that the gearmotor operates without abnormal vibrations and noises.
• Maintenance Documentation: Check the service and maintenance documentation to ensure that the gearmotor has been properly maintained.

10. Areas of Use

The Rossi gearmotor consisting of the MR 21 125 UP2A reducer and the asynchronous three-phase 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 handling and control of textile processes.
• Food Industry: For the handling and processing of materials and production equipment.

11. Advantages of Buying Used

• Lower Cost: The 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 delivery wait times, allowing for quick replacement or start-up of operations.