52mm Brushed DC Motor – 85mm Type Model NFP-RS-997H

52mm brushed DC motor delivers high torque and reliable performance for robotics, automation, tools, vehicles and compact electromechanical applications.

12V,4,900RPM Performance Curve

DATASHEET

997 DC Motor 12V 24V 40V 5,000RPM 20,000RPM Parameters

First, the NFP-RS-997H series is a large brushed DC motor made for high power, high speed, and strong torque. It supports 12V, 24V, and 40V DC systems.

Also, several winding options are available. Therefore, users can choose a model based on voltage, speed, current, torque, and output power.

In addition, the fastest version reaches 19,500RPM at no load. As a result, this motor series is suitable for tools, gates, lawn equipment, cleaners, and other high-power drive systems.

Main Product Features

• Wide voltage range: Different models support 12V, 24V, and 40V DC systems.
• High speed: No-load speed ranges from 4,900RPM to 19,500RPM.
• Strong torque: Stall torque reaches up to 23,373g.cm.
• High output power: Maximum efficiency output reaches up to 469.62W.
• High efficiency: Maximum efficiency reaches up to 85%.
• Ball bearing design: The bearing structure helps support stable high-speed use.
• Multiple windings: Several motor versions are available for different load needs.

Motor Performance Data

Next, the table below compares the four NFP-RS-997H motor versions. It shows voltage, speed, current, torque, output power, efficiency, and stall data.

For example, the NFP-RS-997H-5105 gives the highest no-load speed at 19,500RPM. Also, it provides the highest output power and stall torque in this group.

However, the high-speed version also draws much more current. Therefore, the power supply, driver, wires, and connectors must support the required load and stall current.

NFP-Motor Largest Motor with Ball Bearing Dimension

First, the outline image shows the RS-997H motor body, shaft, mounting points, and overall size. Therefore, users can check the available installation space before making a bracket or housing.

Also, the ball bearing structure helps support smooth high-speed rotation. As a result, it is useful for applications that need stable output under heavier loads.

Mechanical Design Benefits

• Large motor body: Supports higher power and stronger torque.
• Ball bearings: Help improve shaft support and high-speed stability.
• Strong output shaft: Fits larger drive loads and couplings.
• Easy mounting: The motor can be fixed to a rigid frame or bracket.
• Wide use: Suitable for tools, machines, gates, cleaners, and lawn equipment.

997 Brushed DC Motor Characteristic Curve

Next, the characteristic curve shows how speed, current, torque, output power, and efficiency change under load. Therefore, it helps users choose a practical working point.

Also, motor current rises as the load becomes heavier. In contrast, speed falls as torque increases.

Performance Curve Benefits

• Speed check: Shows how motor speed changes as load increases.
• Current check: Helps users choose the correct power supply and driver.
• Torque check: Helps match the motor to the required load.
• Power check: Shows the useful output power range.
• Efficiency check: Helps find a better working point for long-term use.
• Stall check: Helps size current protection and overload control.

Applications and Selection Tips

Typical Applications

Finally, the NFP-RS-997H series is suitable for products that need high power, high speed, and strong torque.

• Drills and screwdrivers: Provides high speed and strong drive torque.
• Electric gates: Supports opening and closing drive systems.
• Lawn mowers: Fits high-power cutting and drive systems.
• Suction pool cleaners: Provides strong power for pumps and moving parts.
• DIY machines: Suitable for custom high-power motor projects.
• Industrial equipment: Can be used in compact machine drives and tools.

How to Choose the Correct 997 Motor

First, choose the motor based on the available supply voltage. Next, compare the required speed and torque with the table above.

Also, check the normal working current instead of only the no-load current. Therefore, the power supply can handle the motor during real use.

Moreover, check the stall current when choosing the driver and fuse. For example, the 40V version can reach 110.79A at stall.

Finally, keep the motor away from long stall conditions. Otherwise, very high current can quickly increase heat and damage the motor or control system.

Final Selection Notes

• First, check voltage: Choose the motor winding that matches the power supply.
• Next, check speed: Select from about 4,900RPM to 19,500RPM.
• Also, check torque: Make sure the normal load stays within a safe working range.
• Moreover, check current: Size the power supply for real operating current.
• In addition, check stall current: Use suitable wiring, driver protection, and a fuse.
• Then, check cooling: High-power use may need good airflow or added cooling.
• Furthermore, check mounting: Use a firm bracket to keep the shaft aligned.
• Finally, test the full system: Check speed, torque, current, heat, noise, and working life before mass production.

In short, the NFP-RS-997H is a large high-power brushed DC motor series with 12V, 24V, and 40V options.

Therefore, it is well suited for drills, electric gates, lawn equipment, pool cleaners, machines, and other products that need strong and fast motor output.

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