Micro Gear Shafts
Integrated micro gear shaft manufacturing for compact gearboxes and precision transmission assemblies
MH manufactures custom micro gear shafts where gear teeth and shaft features are integrated into one precision component. These parts are commonly used in compact gearboxes, robot actuators, aerospace instruments, medical devices, and precision mechanical assemblies.
Custom micro gear shaft with integrated gear and small-diameter shaft
Compared with separate gear and shaft assembly, integrated gear shafts can reduce assembly error and improve torque transmission stability. However, manufacturing requires careful control of gear accuracy, shaft runout, concentricity, heat treatment deformation, and small-diameter shaft features.
Representative Capability Parameters
| Item | Description |
| Product type | Micro gear shaft / integrated gear shaft |
| Gear form | Spur gear shaft, stepped gear shaft, miniature transmission shaft |
| Module examples | m0.2, m0.3, m0.5 representative cases |
| Precision grade | DIN 5–8 capability, depending on drawing and inspection method |
| Material examples | 20MnCr5, alloy steel, stainless steel or customer-specified material |
| Heat treatment | Available according to drawing; HRC60 examples available |
| Key control points | Shaft runout, gear-to-shaft concentricity, tooth accuracy, shaft diameter tolerance, surface finish |
| Manufacturing basis | 2D drawing, 3D model, sample, or technical specification |
drawing of custom micro gear shaft manufacturing case
Key Manufacturing Challenges
Micro gear shafts combine gear tooth manufacturing and precision shaft machining. The part may require multiple machining operations, heat treatment, grinding, finishing, and inspection. If the process is not well controlled, the final part may suffer from gear runout, shaft bending, poor meshing, or assembly instability.
MH focuses on:
- Gear-to-shaft concentricity
- Shaft straightness and runout
- Small shaft diameter tolerance
- Tooth accuracy after heat treatment
- Surface finish on functional shaft areas
- Burr control at gear teeth and shoulders
- Batch consistency for assembly use
Suitable Applications
- Robot actuator gearboxes
- Compact planetary gear systems
- Aerospace instrument mechanisms
- Medical device transmission assemblies
- Precision meters and micro-drive systems
- Miniature pumps and motors
Related Pages
Micro Spur Gears
Micro Spline Shafts
Small Module Gears
DIN 5–8 Precision Gears
Runout Control in Micro Gear Shafts
FAQ
What is the difference between a micro gear shaft and a micro gear?
A micro gear shaft integrates gear teeth and shaft features into one component, reducing assembly error and improving transmission stability.
Can MH manufacture hardened micro gear shafts?
Yes. MH can review heat treatment requirements such as carburizing, quenching, and hardness control based on drawing and material.
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