DC 3V Gear Motor 8RPM Speed Low Noise Rotary Box Plastic Box Watch Winder Motors

500 Plastic Gear Motor Specifications:

Voltage: 3V

Speed: 9rpm

Gear Box Size: 68mm (L)*50.5mm (D)

Output shaft: diameter 7mm flat position thickness 5mm long 9mm shaft elongation

No-load Current:40ma

Load Current:60ma (@3V )

No-load Speed:7.0士0.5rpm/8.0士0.5rpm

Torque:>2.3kg.cm

Operating noise:≤42dB. Quiet enough that will not affect your sleep and daily life.

Stall Current:≤150ma
Gearbox can withstand maximum damage
Torque Test:≤7.2kg.cm Speed:≤12rpm

Wire Cable Length:350mm or 500mm

Weight:50g

• Special accessories for watch winder
• Motor uses special material red belt to drive gear, durable and quiet.
• Optional belt drive or ALL- gear drive motor
• The rusty or damaged motor on the machine can be replaced.
• Easy to disassemble and maintain, suitable for mini fans, scientific experiments, remote control toy car robots, etc.

500 Plastic DC Motor Gear Motor Reducing Engine Drawing & Datasheet

Note:

1. Due to the light and screen difference, the item's color may be slightly different from the pictures.

2. Please allow 1mm-2mm differences due to manual measurement.

Type1:
Mute 500 Plastic Geared Motor 500 Series
Rated Volt:3V
No-load Current:40ma
Load Current:60ma
No-load Speed:7.0±0.5rpm
Torque:≥2.3kg.cm
Working Noise:≤42dB
Stall Current:≤150ma

Type2
Mute 500 Plastic Geared Motor 500 Series
Rated Volt:3V
No-load Current:40ma
Load Current:60ma
No-load Speed:8.0±0.5rpm
Torque:≥2.3kg.cm
Working Noise:≤42dB
Stall Current:≤150ma

Specific Application of the 500 Plastic Gear Motor in Mechanical Watch Winders

The 500-type 3V plastic gear motor, with its low noise, stable speed, and compact design, serves as an ideal driving core for mechanical watch winders. Its specific applications are as follows:

1. Power and Speed Adaptation

Precise Speed (8-9 RPM): Watch winding requires simulating the natural motion of wearing a watch, typically demanding 650-1200 rotations per day (varies by brand). The motor reduces speed to 8-9 RPM (approximately 10,368-12,960 rotations per day) through its gearbox, and when paired with intermittent programming, it precisely meets the winding needs of mechanical watches without overwinding the mainspring.

Low-Voltage Safe Operation (3V): Compatible with USB or lithium battery power, ensuring stable and safe long-term operation.

2. Quiet Operation and Durability

Noise Control (≤42dB): The gearbox uses engineering plastics and precision meshing, operating almost silently to avoid disturbance during sleep or in quiet environments.

High Torque (>2.3 kg·cm): Capable of driving multi-watch rotors (e.g., dual or quadruple watch holders) smoothly, even under varying loads (e.g., different watch resistance levels).

3. Mechanical Adaptation and Installation

Output Shaft Design (7mm Diameter + Flat Side): Directly connects to the watch winder’s turntable or linkage mechanism, secured by a flat side to prevent slippage and ensure reliable transmission.

Compact Gearbox (68×50.5mm): Easily fits into the limited internal space of watch winders, with 350mm/500mm cables allowing flexible wiring.

4. Protection and Longevity Optimization

Overload Protection: The motor withstands momentary torque up to ≤7.2 kg·cm (e.g., if the turntable jams), preventing burnout, while its low power consumption (60mA under load) extends battery life.

Long-Term Durability: The plastic gearbox reduces weight (50g) and resists wear, making it suitable for 24/7 intermittent operation with a lifespan of thousands of hours.

Conclusion: The 500-type motor, with its low-speed high-torque, silent operation, and modular design, is a key component in watch winders, fulfilling the "wearing simulation" function while balancing watch maintenance needs and user experience.

Guang Dong Lihua Mechatronics Co., Ltd.(Lihua Motor) was founded in May 2003, formerly Shen Zhen Hua Chuang Sheng Motor Co., Ltd.  (HCS Motors) 

In order to expand its business, it relocated from Shenzhen to Humen Town (Dongguan City) in October 2017. Lihua is a manufacturer of high-quality DC motors integrates professional development, production and sales, offering a wide range of DC motors, including brushed and brushless motors, geared motors,stepper motor. We has been at the forefront of motor manufacturing and customizing for 20 years, consistently delivering high-performing and reliable products to clients worldwide.

These motors are designed for various applications, including industrial equipment, medical devices, robotics, automotive systems, motor vehicle and more. We also provides Customized DC Motor Solutions to meet specific customer needs.