500 RPM 12V DC Geared Motor - Centre Shaft High Torque Motor

Specification	Details
Operating Voltage	12V DC (6V - 15V Range)
Output Speed	500 RPM
Shaft Type	Centre Shaft (6mm Diameter)
Stall Torque	~1.5 - 2 kg-cm
No-Load Current	~60mA - 100mA
Load Current	Up to 300mA - 600mA (Max)

Price

₹ 152.54

(Tax included)

Barcode: 83721264

Product Description

The 500 RPM 12V Centre Shaft DC Geared Motor is a robust and versatile mechanical actuator designed for high-speed robotic applications. This motor features an internal high-quality spur gear assembly that reduces the high RPM of the base DC motor to a manageable and powerful 500 RPM. The "Centre Shaft" design ensures that the output shaft is perfectly aligned with the motor body, making it easy to mount wheels, pulleys, or gears symmetrically. It is an excellent choice for fast-moving robots, high-speed conveyor belts, and automated dispensing systems where a balance between speed and torque is required.

Key Features

Balanced Speed & Torque: The 500 RPM output provides rapid movement while maintaining enough torque to drive medium-sized robotic chassis.
Precision Spur Gearbox: Metal gears (on high-load stages) ensure durability and long life compared to all-plastic alternatives.
Symmetrical Centre Shaft: The 6mm D-shaped shaft is centered on the motor face, simplifying mechanical CAD designs and chassis alignment.
Wide Voltage Range: While optimized for 12V, the motor can run on 6V (at half speed) or up to 15V for short bursts of extra performance.
Easy Mounting: The front face features multiple threaded holes (typically M3) for secure attachment to motor brackets or metal frames.

Technical Details

Motor Diameter: ~37mm (Standard size).
Shaft Length: ~15mm to 20mm.
Shaft Shape: D-shape for anti-slip coupling.

Prototyping and Engineering Tips from Robogears

Controlling Speed (PWM): To vary the speed of this motor, use a Pulse Width Modulation (PWM) signal from a microcontroller via an L298N or L293D motor driver. Avoid reducing speed by lowering the voltage significantly, as this will drastically reduce the motor's torque and may cause it to stall under load.
Shaft Coupling: CRITICAL: Use a 6mm Bore Coupler or a 6mm Hex Adapter to attach wheels. Ensure the set screw of your coupler sits firmly on the "Flat" part of the D-shaft. If you tighten it on the round part, the shaft will eventually spin inside the coupler, causing mechanical failure.
Stall Protection: If your robot hits a wall and the motor stops spinning while still powered, it is in a "Stall" state. In this state, current draw spikes to its maximum, which can burn the motor windings or the motor driver. Always implement an over-current protection circuit or use a fuse.
Noise Suppression: DC motors generate "Electrical Noise" (EMI) that can interfere with your sensors or cause your Arduino to reset. Solder a 0.1µF ceramic capacitor across the motor terminals to snub these high-frequency spikes.
Mounting Orientation: Because this is a centre-shaft motor, the weight of the motor body is distributed evenly. This makes it ideal for "In-Wheel" designs where the motor sits inside a large hollow wheel or a cylindrical pipe.

Package Includes

1 x 500 RPM 12V Centre Shaft DC Geared Motor

Disclaimer: Do not apply AC power directly to this motor. Ensure your power supply can provide at least 1A of peak current to handle the motor's startup surge. Avoid using this motor for heavy lifting (vertical loads) exceeding 1.5kg without additional mechanical advantage, as it may strip the internal gears. Keep hair and loose clothing away from the spinning shaft.