6mm DC Gear Motor - Smallest Type Used For Lock

6mm Nano Planetary DC Gearmotors

---

Small Gear Motor Overview

First, this 6mm nano planetary DC gear motor is made for very small drive systems. Because the motor diameter is only 6mm, it is narrower than a pencil and can fit into tight spaces.

In early times, this type of micro planetary gear motor was sold on Gizmoszone.com under models such as GH612M, GH6121S, GH6122S, GH6123S, and GH6124S. Today, these small DC geared motors are still useful for robots, locks, model trains, beauty tools, and other compact products.

Unlike general cylindrical pager motors, these motors include a gearbox with 1 to 4 gear stages. As a result, the gearhead reduces speed and increases output torque. Therefore, it can provide more drive force than a normal 6mm coreless motor without a gearbox.

• First, compact size: The motor diameter is only 6mm.
• In addition, higher torque: The gearbox helps increase output force.
• Also, flexible choices: Different motor lengths and gear ratios are available.
• Finally, fast sampling: Many 609 series models are available from stock.

Gearbox and Motor Options

Next, this 6mm planetary gear motor combines different motor lengths with several gearbox choices. For example, the gearbox options include 1-stage, 2-stage, 3-stage, and 4-stage gear reduction designs.

In addition, the available motor body lengths include 9mm, 12mm, 14mm, and 15mm. As a result, this product group offers multiple speed and torque choices for small DC gear motor projects.

Moreover, all motors on this page have a 6mm outer diameter. However, the motor length, gearbox length, shaft type, speed, and torque may be different from model to model.

6mm Gear Motor Selection Table

Therefore, you can use the table below to compare gear ratio, motor length, voltage, no-load speed, stall torque, and sample links. In addition, the table can help you choose a suitable model before testing.

609 Series POM Shaft, POM Gearbox Models

First, these 609 series models use a POM D-cut shaft. Therefore, they are useful for light and compact gear drive tests.

609 Series Metal Shaft, POM Gearbox Models

In addition, these models use a metal 4Cr13 D-cut shaft. As a result, they offer better shaft strength for higher load use.

609 Series Metal Shaft, Metal Gearbox Models

In addition, these models use a metal 4Cr13 D-cut shaft. As a result, they offer better shaft strength for higher load use.

609 Series Lifting POM Gearbox Models

For example, this lifting gearbox motor is made for slow linear motion. Therefore, it can be used in small lifting or push-pull systems.

612 Series POM Shaft, POM Gearbox Models

Next, the 612 series offers more motor length choices. In addition, it provides several gear ratios for speed and torque matching.

612 Series Metal Shaft, Metal Gearbox Models

Meanwhile, these metal gearbox models are suitable for higher torque needs. However, the final choice should depend on speed, load, and available space.

614 Series POM Shaft, POM Gearbox Models

Moreover, the 614 series can provide stronger output than shorter models. Therefore, it is useful when the design needs more torque.

615 Series Metal Shaft, POM Gearbox Models

615 Series Metal Shaft, Metal Gearbox Models

617 Series POM Shaft, POM Gearbox Models

Finally, the 617 series is suitable for higher torque applications. As a result, it can drive heavier small mechanisms at lower speed.

How To Choose the Right 6mm Gear Motor

First of all, choose a low gear ratio when speed is more important. For example, a 5:1 ratio is better for fast output.

However, choose a high gear ratio when torque is more important. Therefore, a 136:1 or 699:1 ratio is better for slow and strong motion.

• In addition, choose a POM shaft for light load designs.
• Meanwhile, choose a metal shaft when the shaft needs more strength.
• As a result, the motor can match the load more safely.
• Finally, test samples before mass production.

609 Series Motor Structure

First, the 609 series uses a 6mm diameter and 9mm length coreless motor. Because the motor no-load speed can reach 33,000rpm, it works well with several planetary gearbox options.

In addition, a planetary DC gear motor uses gears to reduce speed and increase torque. The gears are mounted around a center gear, and therefore the gearbox can keep a compact shape while improving drive force.

Output Shaft Materials

There are two common output shaft materials: POM and stainless steel 4Cr13. Therefore, you can choose the shaft type based on strength, wear needs, and product cost.

• First, POM shaft: This plastic shaft is light, smooth, and useful for many small drive parts.
• In addition, 4Cr13 shaft: This metal shaft offers higher hardness and better wear resistance.
• Also, D-cut design: The shaft shape helps connect gears, cams, or small drive parts.

For example, POM is often used for small precision parts because it has low friction and good wear resistance. However, it should not be used for high-heat or harsh chemical conditions.

Meanwhile, 4Cr13 is a stainless steel with good hardness and wear resistance. As a result, it is a practical choice when the shaft needs more strength.

Introduction Of Micro Planetary Gearbox

---

How the Gearbox Works

First, a micro planetary gearbox is a compact gear system for small motors. Because it uses a sun gear, planet gears, a ring gear, and a carrier, it can reduce speed in a small space.

In addition, the input and output shafts are usually aligned on the same center line. Therefore, this gearbox is easy to pair with micro DC motors.

Moreover, micro planetary gearboxes can provide small size, high gear ratio, good drive efficiency, strong structure, and useful load capacity. As a result, they are often used in compact products that need controlled motion.

Available Gearbox Sizes

Driven by market needs, our company has developed a wide range of micro planetary gearboxes. For example, the outer diameters include 3.6mm, 4mm, 5mm, 6mm, 8mm, and up to 36mm.

Therefore, customers can choose different gearbox sizes for different load, speed, space, and cost needs.

Applications Of 6mm Motors With Plastic Gearbox

---

Typical Uses

First, 6mm planetary gear motors are widely used in locks, train models, beauty tools, and small smart devices. Because they are small and compact, they are a good choice for tight mechanical spaces.

In addition, a variety of speeds and torques are available. Therefore, these motors are suitable for small precision drive systems that need slow speed, high torque, or stable motion.

• For example, smart locks can use this motor for small latch drive systems.
• In addition, train models can use it for compact motion control.
• Also, beauty tools can use it where small size and low speed are required.
• Finally, robots can use it for micro movement and small mechanisms.

High Torque Smallest Gear Motor Using In Door Lock Systems