🔧 Product Overview
The 12V Pololu 156:1 Metal Gearmotor (20Dx44L mm) is a compact high torque DC gearmotor designed for robotics, automation, and precision motion systems.
With a 156:1 gear ratio and sturdy metal gearbox, this motor delivers controlled low-speed output with excellent torque, perfect for mobile robots and mechanical subsystems.
Whether you're building a robot chassis or an automated mechanism, this gearmotor combines compact size, high torque performance, and reliable operation for demanding applications.
For applications requiring self-locking performance and even higher torque, consider our worm gear motor solutions.
⭐ Key Features
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⚙️ 156:1 Gear Ratio – Provides high torque at practical speed
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🔋 12V DC Input – Standard voltage for controllers and batteries
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⚙️ All-Metal Gearbox – Durable design for consistent long-term performance
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🔩 Compact Build (20Dx44L mm) – Ideal for space-constrained installations
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🚀 Suitable for Robotics & Automation Projects – Enhances torque and motion control
🧠 Why Choose This Gearmotor?
This Pololu metal gearmotor stands out by offering a balance of torque and size:
✔ Metal Gear Benefits
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Improved durability over plastic gears
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Better heat resistance and lifespan
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Consistent high torque under load
✔ High Gear Ratio Advantage
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Higher effective torque for heavy loads
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Slower, more stable motion control
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Ideal for robotics drive systems and load-bearing subsystems
This makes it excellent for applications where torque and compactness matter more than top speed.
🔩 Applications
This compact high torque DC gearmotor is commonly used in:
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Mobile robot drive systems
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Pan/tilt mechanisms and robotic arms
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Conveyor and materials handling systems
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Small automated gates and switches
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DIY automation and embedded hardware projects
🧭 How to Choose the Right DC Gearmotor
When selecting a gearmotor, consider:
| Selection Factor | Why It Matters |
|---|---|
| Voltage | Must match your power supply (12V DC) |
| Gear Ratio | Higher ratio = more torque, lower speed |
| Motor Size | Fit your mechanical space (20Dx44L) |
| Gear Material | Metal gears = longevity and strength |
| Application Load | Higher loads need higher torque |
This Pololu gearmotor’s 156:1 ratio and metal gearbox make it a smart choice for systems demanding controlled low-speed torque with limited space.
⚖️ Gearmotor Comparison (When Choosing)
| Feature | Pololu 156:1 Gearmotor | Standard DC Motor |
|---|---|---|
| Torque Output | High | Lower |
| Size | Compact | Varies |
| Gear Material | Metal | Often Plastic |
| Load Handling | Excellent | Moderate |
| Ideal For | Robots & Automation | General Motion |
For robotics and medium-sized mechanisms, higher gear ratio gearmotors outperform general-purpose DC motors.
📊 Technical Specifications
| Parameter | Value |
|---|---|
| Model | Pololu 156:1 Metal Gearmotor |
| Gear Ratio | 156:1 |
| Rated Voltage | 12V DC |
| Motor Type | DC |
| Gear Material | All Metal |
| Output Shaft | Metal |
| Compact Size | 20D x 44L mm |
| Torque | High Torque Output |
| Application | Robotics & Automation |
❓ Frequently Asked Questions (FAQ)
Q1: What is the benefit of a 156:1 gear ratio?
A: A high gear ratio increases torque and reduces output speed, ideal for applications that need strong force at lower speed.
Q2: Is this gearmotor compatible with 12V systems?
A: Yes, this motor runs on 12V DC, compatible with most battery and controller setups.
Q3: Can I use this motor in small robots?
A: Yes —Its compact size and high torque make it perfect for mobile robots and tight mechanical configurations.
Q4: Why choose metal gears over plastic?
A: Metal gears provide better durability, reduced wear, and higher load capacity for demanding use cases.
📦 Package Includes
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1 × Pololu 156:1 Metal Gearmotor (20D x 44L mm, 12V DC)
🔍 Product Summary
The Pololu 12V High Torque 156:1 Metal Gearmotor brings together compact design, durable metal gears, and high torque output to power robotics and automation projects that require reliable motion control in a space-efficient package.
