Products

High Precision & Low Backlash

Manufactured to Grade 4 accuracy or better, our Joint Gear guarantees smooth joint operation with minimal play—critical for humanoid robot dexterity.

Durable Material & Treatment

Made from alloy steel with tailored carburizing and quenching, ensuring a hard, wear-resistant surface and tough core for extended lifespan.

Compact Design

Small-module configuration allows integration into tight joint assemblies without compromising torque performance.

Noise Reduction

Polished tooth surfaces and precision shaft fitting reduce vibration and noise—ideal for human-interactive robotics.

Lightweight & Efficient

Optimized for minimal inertia, reducing energy consumption and boosting movement responsiveness

Product parameters

Module:m0.5-m2

Material: 20CrMnTi/42CrMo (alloy steel)

Hardness: HRC 58-62(surface); ≥HRC 30 (core)

Tooth Accuracy: ISO Class 4 or better

Surface Finish:Ra≤0.8 μm

Outer Diameter: Customizable, range10-50mm

Bore Type: Straight, keyway, or spline (based on joint design)

Lubrication: Compatible with standard synthetic and silicone greases

Application areas/scenarios

Joint Gear is specifically tailored for humanoid robots—including companion bots, service robots, and rehabilitation devices. In one project with a leading robotics firm, our Joint Gear enabled a walking robot to perform precise balancing routines and dynamic hand gestures, significantly enhancing user interaction capabilities. The gear’s silent, accurate motion also improved perception of robotic “lifelikeness”—a crucial advantage in social robotics and customer-facing automation.

Q1: What makes your precision gears unique?

A1: DDGear’s precision gears stand out for their ultra-tight tolerances (ISO ≤ Class 4), hardened alloy material (e.g., 20CrMnTi, 42CrMo), micron-level surface finishes (Ra ≤ 0.8 µm), and superior wear resistance. They are optimized for minimal vibration and long service life, making them ideal for applications such as robotics, EV drivetrains, AGVs, and medical devices.

Q2: Can you customize gears to our exact specifications?

A2: Absolutely. We offer both OEM and ODM services—including design refinement, material selection, and tailored manufacturing. Our engineering team supports you from prototype to mass production, with flexible options for module, bore type, and heat treatment.

Q3: How long is the lead time for prototypes and production?

A3: For gears with existing tooling, typical lead time is around 15 days. For custom parts, sample production takes 2–3 weeks depending on complexity. We prioritize fast turnaround while ensuring top precision.

Q4: What quality standards and certifications do you adhere to?

A4: We operate under ISO 9001 and IATF 16949 quality systems and comply with ISO 1328, DIN, and AGMA standards. All gears go through SPC monitoring, CMM checks, noise/vibration testing, and full traceability documentation to ensure consistent performance.

Q5: What industries do you serve, and what makes your service reliable?

A5: DDGear serves over 30 countries and has collaborated with leading OEMs across robotics, EVs, AGVs, medical equipment, industrial automation, e-bikes, and automatic doors. Our in-house manufacturing capabilities—covering everything from design to production—ensure short delivery cycles, high quality, and flexible volume scaling.