JGA25-370 Geared DC Motor Instruction Manual

1. Introduction

This manual provides essential information for the safe and efficient use of your JGA25-370 Geared DC Motor. This high-torque electric gear motor is available in various RPMs and voltages (6V, 12V, 24V) and is suitable for a wide range of applications requiring controlled rotational speed and power.

Please read this manual thoroughly before installation and operation to ensure proper function and longevity of the motor.

2. Safety Precautions

Failure to follow these safety instructions may result in injury or damage to the motor.

• Match the rated voltage and frequency.
• Ensure wiring is firm, reliable, and properly grounded.
• Always perform power-off maintenance.
• Strictly prevent stalling and overload; the load must not exceed the rated torque.
• Avoid frequent starting and stopping.
• Install the motor smoothly and securely, ensuring the axis is aligned and concentric.
• Do not strike the shaft end or forcefully push it.
• Monitor temperature, noise, and vibration during operation. Immediately cut off power for troubleshooting if abnormal temperature, noise, or jamming occurs.
• Operate in clean and dry environments. Protect the motor from dust, corrosive substances, and condensation.
• Add lubricating grease according to specifications.
• Do not disassemble the motor unless you are a professional.
• Replace parts with components of the same specifications.

3. Specifications

The JGA25-370 geared DC motor is available in various configurations. Key specifications are detailed below.

3.1 General Specifications

• Model Number: JGA25-370
• Type: Gear Motor
• Construction: Permanent Magnet
• Commutation: Brush
• Protect Feature: Slowdown
• Efficiency: IE 1
• Continuous Current (A): 0.03A
• Output Power: <18.65W
• Torque: 9KG.CM (This is a general value; specific torque depends on reduction ratio and voltage)
• Origin: Mainland China
• Certification: NONE
• Wireless Functionality: No
• Battery Included: No
• High-concerned chemical: None

3.2 Dimensions

Refer to the diagram below for detailed dimensions of the JGA25-370 motor. Note that the overall length 'L' varies with the reduction ratio.

Image Description: A technical drawing illustrating the dimensions of the JGA25-370 geared DC motor. It includes a side view with measurements for overall length (L), shaft diameter (Ø4mm), motor body diameter (Ø25mm), and gearbox diameter (Ø25mm). A front view shows the mounting holes (6-M3, P.C.DØ31) and shaft details. A table above the diagram correlates the 'L' value (length in mm) to different reduction ratios (4.4, 9.6, 21.3, 35.5, 46.8, 78, 103, 171, 226, 377, 500). The diagram notes that 'L' is determined by the reduction ratio, and a slower speed results in a longer 'L'. It also mentions a slight error in manual measurement and advises referring to the actual product.

• Shaft Diameter: 4mm
• Motor Body Diameter: 25mm
• Gearbox Diameter: 25mm
• Mounting Holes: 6-M3, P.C.DØ31

3.3 Performance Tables

The following tables provide detailed performance characteristics for different voltage and reduction ratio configurations.

3.3.1 ZYTD-520 (12V-3500R) & (24V-5000R) Performance

3.3.2 Reduction Ratio, Length, and Rated Torque

3.3.3 No-Load and Load Characteristics (ZYTD-520)

3.3.4 Detailed Model Performance (B37RG Series)

4. Setup and Installation

Proper installation is crucial for the motor's performance and lifespan.

1. Mounting: Install the motor smoothly and securely. Ensure the motor's axis is perfectly aligned and concentric with the driven component. Avoid any forceful striking or pushing on the shaft end during installation.
2. Wiring: Connect the motor firmly and reliably to your power source. Ensure proper grounding to prevent electrical hazards. Match the rated voltage and frequency of the motor with your power supply.
3. Environment: The motor is designed for clean and dry environments. Take necessary precautions to protect it from dust, corrosive substances, and condensation.

For visual reference, here are images of the motor and its internal components:

5. Operating Instructions

Once installed, the motor is ready for operation. Follow these guidelines:

• Power On: Apply the correct rated voltage (6V, 12V, or 24V) to the motor terminals.
• Rotation Direction: The motor's rotation direction can be changed by reversing the polarity of the power supply. Connecting the positive terminal to one motor lead and negative to the other will result in one direction; reversing them will result in the opposite direction.
• Load Management: Do not exceed the motor's rated torque to prevent stalling or overload. Avoid frequent starting and stopping, as this can reduce motor lifespan.

Watch this video for a demonstration of the motor's operation and how to reverse its direction:

6. Maintenance

Regular maintenance ensures optimal performance and extends the motor's life.

• Lubrication: Add lubricating grease according to the specifications.
• Cleaning: Keep the motor clean and free from dust and debris.
• Inspection: Periodically inspect the wiring for firm connections and ensure proper grounding. Check for any signs of wear or damage.
• Professional Service: Do not attempt to disassemble or repair the motor if you are not a qualified professional. Always replace parts with components of the same specifications.

7. Troubleshooting

If you encounter issues with your motor, refer to the following common problems and solutions:

• Motor Not Running:
  • Check power supply voltage and frequency match motor specifications.
  • Ensure wiring connections are firm and reliable.
  • Verify proper grounding.
  • Check for stalling or overload; reduce load if necessary.
• Abnormal Noise, Vibration, or Overheating:
  • Immediately cut off power.
  • Inspect for mechanical jamming or misalignment of the shaft.
  • Check for excessive load.
  • Ensure the motor is operating in a clean and dry environment, free from dust or corrosion.
  • If issues persist, professional inspection is recommended.
• Reduced Performance:
  • Check for signs of wear on internal components (gears, brushes).
  • Ensure adequate lubrication.
  • Verify the load is within the rated torque.

8. User Tips

Based on common user experiences and questions:

• Gear Material: The gears inside the gearbox are made of metal, ensuring durability and excellent quality.
• Voltage Compatibility: A 12V motor can often run on 14.4V without issues, resulting in slightly faster operation. For a 6V motor, a 7.4V battery might work, but consider a 12V motor for higher voltage applications.
• RPM for Applications:
  • For heavy-duty electric screwdrivers, 200 RPM or less is often recommended for better control and torque.
  • For RC tanks with 120mm tires, 150 RPM at 12V is generally suitable, though 100 RPM might offer more torque if speed isn't the primary concern. For smaller 12mm tires, 6V might be sufficient.
  • For applications requiring significant pulling force or smooth operation (e.g., WPL RC vehicles), lower RPMs (e.g., 200 RPM instead of 400 RPM) can provide better torque and control.
• Continuous Operation: The motor can run for extended periods. Some users report motors running warm after 5 minutes of operation, but the gearbox remains cool without load.
• Self-Locking: The motor is generally not self-locking, meaning the shaft can be turned manually when power is off, depending on the reduction ratio and external load.
• Power Consumption: For a 12V motor, current consumption under load can be around 200-280 mA for a 30 RPM model. Power consumption for a 6V motor is approximately 12W (6V * 2A), and for a 12V motor, it's around 24W (12V * 2A).

9. Warranty and Support

For any questions, technical support, or warranty claims, please contact your retailer or the manufacturer directly. Refer to the product packaging or purchase documentation for specific contact information.

A user manual in PDF format is also available for download: View User Manual (PDF).