China Wholesale Pre-assembled Gearbox Manufacturer & Suppliers

High-Precision Miniature Planetary Gearboxes, Custom Drive Systems, and ISO 9001 Certified OEM/ODM Manufacturing Solutions

Featured Pre-assembled Gearboxes & Micro Drive Assemblies

Explore our range of engineered-to-order drive configurations. Each unit integrates precision polymer or metal gearing with calibrated electric motor outputs for immediate drop-in integration.

16mm Stability High Torque Dc Plastic Gear Motor 5V
Factory Supply 16mm Stability High Torque Dc Plastic Gear Motor 5V Electric Planetary Reduction Gearbox for Electric Egg Whisk
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16mm Stability Dc Plastic Gearboxs
Hot Sale Factory Supply Directly 16mm Stability Dc Plastic Gearboxs for Cordless Electric Screwdriver
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20mm High Torque High Precision Planetary Gearbox
Hot Sale Low Price 20mm High Torque High Precision Planetary Gearbox 12v Dc Gear Motor for Smart Washing Machine
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6mm DC Brush Micro Electric Stepper Motor
Spot Supplier High Quality 6mm DC Brush Micro Electric Stepper Motor 3V Gearbox Gear Motor for Toy, VR and UAV
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16mm Dc Plastic Gear Motor
Factory Supply High Quality 16mm Dc Plastic Gear Motor 5V 12v 24vPlanetary Reduction Gearbox for Electric Screw Driver
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12V Plastic Planetary Gearbox
Wholesale High Precision 12V Plastic Planetary Gearbox 28mm Diameter DC Gear Motor for Sun Curtain Opener and Closing Device
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DC Plastic Planetary Gearbox 28mm
Factory Supply Directly High Precision High Quality Low Noise DC Plastic Planetary Gearbox 28mm for Yacht Automatic Actuator
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10mm 3V Planetary Gearbox
Hot Sale High Precision Low Noise 10mm 3V Planetary Gearbox for Smart Baby Bottle
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The Global Landscape of Pre-Assembled Micro Gearboxes

In the contemporary B2B landscape, the transition from sourcing individual gear components to procuring fully pre-assembled gearbox systems has revolutionized equipment design and product manufacturing lifecycle timelines. Industrial and consumer automation require micro-motion configurations that possess highly optimized gear ratios, structural stability, and structural longevity. A pre-assembled gearbox integrates planetary or spur gear trains, housings, output shafts, and electric motors into a singular, pre-calibrated unit.

Global demand for integrated micro-drives has experienced exponential growth. Industries ranging from medical diagnostics, automated home appliances, and robotics to automotive subsystems are phasing out manual internal assembly of gearboxes. By shifting the tooling, component alignment, lubrication, and quality control back to a dedicated manufacturer, global OEMs reduce failure rates, streamline internal assembly lines, and eliminate concentricity errors that historically compromised performance. When sourcing from a verified China supplier, buyers secure this engineering reliability at scale.

20k+
Gear Ratio Configurations
100%
End-of-Line Quality Tested
2µm
Micro CNC Machining Precision
ISO
9001:2015 Certified Facility

The Structural Mechanics: Planetary Gearboxes vs. Spur Gears

When selecting a pre-assembled gearbox, mechanical engineers choose between two primary gear profiles based on application constraints:

  • Planetary Gear Systems: Ideal for applications demanding high torque density in restricted spaces. The load is shared across multiple planet gears rotating around a central sun gear, delivering high structural rigidity, minimal backlash, and exceptional gear ratio optimization.
  • Spur Gear Systems: Perfect for lower torque applications and cost-sensitive assemblies. Spur gears offer simple operation, ease of maintenance, and high mechanical efficiency at high rotational speeds, but lack the high load-bearing properties of planetary systems of equivalent physical dimensions.

The China Factory Advantage: Precision, Tooling, & Scale

Dongguan Divistechs Technology Co., Ltd. operates from Dongguan, the manufacturing capital of precision components. By running a fully integrated facility, we manage the entire production cycle: custom tooling, precision injection molding, die parts processing, assembly, and automated testing under one roof. Removing intermediaries ensures cost savings, consistent material composition, and strict control over tolerances.

Our production facilities utilize advanced CNC machinery, high-speed injection molding lines, EDM systems, and slow wire machines to manufacture components with micrometer accuracy. Choosing a vertically integrated factory ensures that the housing, shafts, planetary carriers, and teeth match perfectly, preventing assembly mismatches that cause noise and reduce longevity.

20,000+ Gear Configurations

We supply modular planetary and spur gear designs ranging from 6mm to 28mm diameters, custom-engineered to pair with standard DC brush, brushless, stepper, and servo motors.

In-House Tooling & Design

Our engineers convert technical drawings into physical tooling using CAD/CAM modeling. We maintain control over mold parameters, ensuring rapid prototyping and long mold life.

Advanced Materials Selection

From low-noise engineering polymers (POM, Delrin, Nylon) to powder metal gears and steel shafts, we optimize materials to balance mechanical strength, noise reduction, and cost.

Divistechs Manufacturing Facility & Shop Floor

Step-by-Step Production Process & Metrology Lab

Maintaining high standards requires structured engineering workflows. Every micro gear, casing, and assembled drive shaft is processed through a strict quality plan. We maintain total control over mechanical and structural specifications at every step.

Manufacturing Workflow

Die Parts Processing
Die Parts Processing
Mold Making
Mold Making
Injection Molding
Injection Molding
Assemble
Assemble
Testing
Testing
Package
Package
Slow Wire
Slow Wire
Injection Molding Machine
Injection Molding Machine
EDM
EDM
CNC
CNC
Milling Machine
Milling Machine
Grinding Machine
Grinding Machine

Advanced Metrology & Quality Control Facility

Precision is verified through advanced metrology instruments. Our calibration and inspection lab monitors tooth profiles, concentricity, and raw material characteristics to ensure compliance with specifications.

Coordinate Measuring Machine
Coordinate Measuring Machine
JE25 Measurement Center
JE25 Measurement Center
Gear Meshing Instrument
Gear Meshing Instrument
Image Measuring Instrument
Image Measuring Instrument

Applications & Real-World Deployments

Pre-assembled micro planetary gearboxes are key components across various modern product lines. Proper selection depends on balancing operational speed, torque requirements, noise limits, and environmental conditions.

Smart Home Systems

Used in sun curtain openers, automated blinds, and smart toilet seat mechanisms. These applications rely on 22mm to 28mm planetary gearboxes coupled with low-noise 12V DC motors to deliver quiet, high-torque performance.

Consumer Tools & Appliances

Cordless screwdrivers and handheld egg whisks use high-torque 16mm planetary gear motors. These gearboxes handle peak load shifts and resist gear stripping during high-stress operations.

Medical & High-Tech Devices

Medical infusion pumps, VR headset tracking drives, and UAV camera stabilizers use micro 6mm to 10mm planetary gearboxes, which offer precise motion control and lightweight operation.

B2B Procurement and Supply Chain Optimization

Sourcing micro-motion gearboxes requires evaluating technical compatibility and supplier capacity alongside pricing. Our engineering and sales teams work directly with procurement managers to establish reliable delivery programs.

  • Detailed Specifications: We provide engineering drawings, 3D CAD files, and material certificates (RoHS, REACH) to streamline integration.
  • Production Flexibility: Our facilities support scaling from initial prototyping and pilot runs to high-volume container shipments.
  • Quality Management: Operating under ISO 9001:2015 standards, we use automated test benches to verify torque, noise levels, and backlash before packaging.

Frequently Asked Questions

What are the primary benefits of plastic planetary gearboxes compared to all-metal designs?
Plastic planetary gearboxes (often utilizing engineering polymers like POM, Delrin, and Nylon) offer significant noise reduction, corrosion resistance, self-lubricating properties, and lower weight. They are also highly cost-effective for high-volume B2B consumer applications. Metal gearboxes are reserved for extreme torque applications that exceed the shear limits of polymer gears.
How does Divistechs ensure low-noise operation in its micro gear assemblies?
Noise reduction is achieved through precise gear tooth geometry optimization, high-accuracy injection molding, and selective component pairing. Additionally, mixing polymer gears with metal gears inside the gearbox housing helps absorb resonance, lowering decibel output under load.
What custom parameters can B2B buyers modify?
Buyers can customize gear ratio configurations, shaft geometry (D-cut, round, splined, or threaded), input voltage, housing material, wiring harnesses, connectors, and mounting configurations to suit specific design constraints.
How does gear modulus affect precision and load capacity?
The gear modulus determines tooth size. A smaller modulus allows for compact packaging and higher precision (fewer gear teeth errors), but reduces individual tooth strength. A larger modulus increases tooth size, raising load capacity at the expense of overall packaging dimensions.
What is the typical lead time for custom OEM gear prototypes?
For modifications to existing configurations (such as shaft adaptations), prototyping typically takes 10 to 15 days. For completely new custom mold developments, tooling and initial sample production are completed within 25 to 35 days, followed by structural verification.

Technical Specifications & Component Catalog

Examine our standard components, modular gear elements, and custom planetary assemblies. All products include access to standard 3D CAD files for integration testing.

High Precision Plastic Gear Wholesale
Factory Spot Wholesale High Precision Plastic Gear Derlin Acetal Abs Pom Nylon Spur Gear
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22mm 12v Planetary Gear Motor
High Quality Customization High Torque Low Niose 22mm 12v Planetary Gear Motor Dc Automatic Toilet Seat Cover Gearbox
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22mm 12v Planetary Gearbox
Customization High Torque Low Niose 22mm 12v Planetary Gearbox Dc Gear Motor Customize for Vending Machine
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12V DC Plastic Planetary Gearbox
Wholesale 12V DC Plastic Planetary Gearbox 28mm Diameter Micro Gear Motor for Window Blind and Smart Door Lock
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High Precision Small Modulus POM Spur Gear
Factory Spot Wholesale High Precision Small Modulus Plastic POM Spur Gear
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Electric Stepper Motor 3V Gearbox
Factory Supply Directly Hot Sale High Quality Electric Stepper Motor 3V Gearbox Gear Motor for Toys
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12mm Micro Planetary Gearbox
Whole Sale 12mm High Quality Micro Planetary Gearbox Electric Gear Motors for Smart Trash Can and Robot Vacuum Cleaner
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12V Mini Gearbox Planetary Gear
High Torque 12V Mini Gearbox With 28mm Plastic Planetary Gear Low Noise Brush DC Micro Motor Medical Pump Quick Supply
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