Whether you are building a DIY robotic arm, a tiny conveyor, or a compact rotating table, hollow shaft gear motors offer convenient, vibration-quiet torque with easy mounting. This guide highlights five hollow-shaft-compatible motors ideal for low-speed, high-torque tasks. Each entry explains who it’s best for, why it fits, and a practical limitation to consider. The quick-reference table below compares key traits to help you choose quickly.
| Product | Voltage / Speed Range | Output Shaft | Best For |
|---|---|---|---|
| Bemonoc 120W 110V | 110V, 0–18 RPM | 14 mm | High-torque, precision control in automation and conveyors |
| uxcell Double Shaft DC 12V | 12V, 10 RPM | 8 mm | Compact, budget-friendly low-speed applications |
| Makermotor 12V DC | 12V, 100 RPM | Shaft not specified | Small machinery with moderate speed requirement |
| QWORK JGY-370 Pair | 12V, 10 RPM | D-shaped shaft | DIY projects needing high torque for tight spaces |
| BRINGSMART 12V 12 RPM | 12V, 12 RPM | 8 mm | Self-locking, compact robotic or locking applications |
Bemonoc 120W 110V Hollow Shaft Gear Motor
The Bemonoc model offers a 1:80 reduction with a 14 mm output shaft and a maximum torque of 345 kg.cm. This unit features a self-locking worm gear structure for stable position control and reversible speed from 0 to 18 RPM. It is ideal for precision positioning tasks, such as belt conveyors or winches, where direction changes are required. Built with high-precision alloy gears and a cooling design, it emphasizes durability and heat dissipation. Best for high-torque, precise tasks where a hollow shaft is beneficial for mounting accessories or passing through components.
Caution: The motor operates at 110V AC, which may require appropriate safety and electrical considerations for hobbyist setups.
uxcell DC 12V Double Shaft Worm Gear Motor
This 12V DC worm gear motor provides a compact 10 RPM output with a robust 40 kg.cm torque. Its dual-shaft design (one shaft at 8 mm) offers flexibility for driving two linked mechanisms or mounting through-holes. The metal gearbox and electronic components indicate suitable durability for small automation tasks, such as fans, curtains, and simple automation instruments. Best for compact, budget-friendly installations where low speed and reliable torque are needed. Limitations include relatively modest torque compared with larger industrial units.
Makermotor 3/8″ D Shaft 12V DC Reversible Gear Motor
The Makermotor unit runs on 12V DC with a nominal 100 RPM and a 3/8″ D shaft. It is a straightforward option for small machines that require a reliable, reversible drive. The explicit 100 RPM rating suits projects needing moderate speed without sacrificing torque. Best for compact robotics and simple automation tasks where a straightforward, reversible drive is desirable. Caution: Shaft dimensions and mounting configuration should be verified to ensure a proper fit in custom housings.
QWORK JGY-370 High Torque 12V Worm Gear Motor
The QWORK pair provides 12V operation with a 10 RPM output and a D-shaped shaft, emphasizing high torque and low noise for both DIY and industrial uses. All-metal gears contribute to long-term durability and heat resistance. It suits small-scale automation projects, label machines, remote curtains, and barbecue appliances where a compact, robust motor is needed. Best for low-speed, high-torque needs in confined spaces. Limitation: The D-shaped shaft may require specific couplings or adapters for some configurations.
BRINGSMART 12V 12 RPM Self-Locking Gear Motor
The BRINGSMART model runs at 12V with a precise 12 RPM no-load speed and an 8 mm output shaft. Its self-locking design helps maintain position without continuous power, making it suitable for locking mechanisms, rotating tables, and curtain systems. The motor’s compact form factor pairs well with small enclosures and mounting plates. Choose this if self-locking capability is a priority, but be mindful of current draw under load, which can impact power supply sizing.
Buying Guide: Key Considerations For Hollow Shaft Gear Motors
- Output shaft diameter and compatibility: Ensure the hollow shaft or through-hole design aligns with your load and mounting hardware.
- Speed and torque needs: Low-speed, high-torque motors excel in positioning and lifting tasks; verify rated torque and stall torque when available.
- Voltage and drive type: AC vs DC, single vs dual shafts, and reverse capability affect wiring, controllers, and overall system complexity.
- Self-locking and braking: Self-locking gear motors hold position without power; consider if your application requires a passive brake.
- Durability and heat management: All-metal gears and cooling features extend motor life in continuous operation; check for venting and heatsinking design.
- Mounting and footprint: Check mounting holes, flange size, and overall dimensions to fit tight enclosures or chassis.
- Control options: If precise speed control is needed, ensure you have an appropriate drive or controller that matches the motor type.
FAQ
- What is a hollow shaft gear motor used for?
It allows components to pass through the motor shaft or to mount accessories along the shaft, common in robotics and compact machinery.
- Should I choose AC or DC for a hollow-shaft motor?
AC motors (like the Bemonoc) can provide high torque and stable control; DC motors (like theuxcell, Makermotor, QWORK, BRINGSMART) are typically easier to power and control in DIY projects.
- What does self-locking mean in practice?
Self-locking means the output shaft remains fixed when power is removed, useful for position-stable applications like locking mechanisms or rotating platforms.
- How do I verify shaft compatibility with a custom mount?
Check shaft diameter, shape (round, D-shaped), and any adapters required. Measure your load hub and mounting holes to ensure a proper fit.
- Are these motors suitable for continuous operation?
All-metal gear construction and cooling features improve longevity, but ensure your selection matches your duty cycle and cooling availability.
- Can these motors be controlled precisely?
Yes, especially the low-speed, high-torque units with suitable drivers; pair with a compatible controller and feedback mechanism for best results.
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