Hollow shaft gear motors are ideal for compact, precise motion control where a motor shaft can pass an object or sensor through the center. They combine a gearbox with a motor to deliver high torque at low speeds, with many models offering self-locking, reversible operation, and varied shaft diameters. This guide highlights five solid options suited for automation, robotics, and DIY projects. Each entry includes who it’s best for, why it’s a good fit, and any notable limitations.
| Product | Best For | Key Benefit |
|---|---|---|
| Bemonoc 120W 110V Low RPM Gear Motor | Industrial hobbyists needing high torque | 1:80 reduction, 14mm shaft, self-locking |
| uxcell Double Shaft Worm Gear Motor DC 12V | Small automation projects with dual outputs | 10 RPM, 8mm output shaft, compact dimensions |
| Compact DIY robotics and tables | 100 RPM, reversible, 13.5V supply | |
| QWORK 2 Pack JGY-370 High Torque Worm Motor | DIY & industrial gadgets needing low speed and high torque | 10 RPM, all-metal gears, robust build |
| BRINGSMART 12V 12rpm DC Worm Gear Motor | Locking mechanisms and rotating platforms | Self-locking, 8mm shaft, 12 rpm |
Bemonoc 120W 110V Low RPM Gear Motor
- 1:80 reduction ratio yields strong torque with low output speed; 14mm output shaft diameter.
- Max torque around 345 kg.cm and reversible speed control from 0 to 18 RPM.
- Alloy steel gears with cooling features support durability and heat dissipation.
Best for: Applications needing precise, slow rotation and bidirectional control, such as conveyors or winches. Limitation: 110V operation may require appropriate power sourcing and safety considerations for household use.
uxcell Double Shaft Worm Gear Motor DC 12V
- No-load speed 10 RPM; 40 kg.cm rated torque; 850 mA current.
- Compact form with 8mm output shaft; dual-shaft design offers flexibility.
- Metal body for durability in industrial and automation settings.
Best for: Small projects requiring slow, controlled motion with dual-output options. Limitation: Lower voltage (12V) may necessitate a compatible driver or power supply.
Makermotor 3/8″ D Shaft 12V DC Reversible Gear Motor
- 13.5V DC rated supply; 100 RPM nominal speed; 60W load.
- Reversible operation allows bidirectional control for simple automation tasks.
- Compact 3/8″ D shaft suitable for small gearing and mounting options.
Best for: Lightweight robotics and projects needing straightforward reversible drive. Limitation: Power supply compatibility should be verified for higher torque tasks.
QWORK 2 Pack JGY-370 High Torque Worm Gear Motor
- 12V motor delivering 10 RPM with all-metal gears for high torque and low noise.
- Compact form factor; two identical motors included for synchronized projects.
- Robust construction suitable for DIY and industrial applications.
Best for: Projects needing reliable, low-speed, high-torque drives at a compact size. Limitation: Requires steady 12V supply and proper heat management for extended use.
BRINGSMART 12V 12rpm DC Worm Gear Motor
- 12V operation with 12 rpm output and 8mm shaft diameter.
- Self-locking feature ensures the output stays fixed when power is off.
- Micro-turbine worm design suitable for precise positioning tasks.
Best for: Locking mechanisms, rotating platforms, and robotic tables. Limitation: Self-locking behavior may limit backdrive in certain setups; verify system requirements.
Buying Guide
When choosing a hollow shaft gear motor, consider voltage, speed, torque, shaft size, and self-locking behavior. For high-torque needs, models with robust metal gears and larger gear ratios are preferred. If space is constrained, prioritize compact footprints and dual-shaft options. For projects requiring bidirectional motion, ensure the drive can be reversed safely with your control system.
Key questions to ask:
– What shaft diameter and hollow bore size does the load pass through?
– Is self-locking necessary when power is removed, or is backdriving acceptable?
– What voltage does your control system provide, and do you need DC or AC operation?
– Is continuous operation at higher torque acceptable, given heat dissipation capabilities?
– Do you require multi-motor synchronization or separate independent drives?
FAQ
- What is a hollow shaft gear motor useful for? It allows a shaft to pass through the center, enabling sensors or mechanisms to pass through while providing reduced overall footprint and integrated gearing for torque amplification.
- What does a worm gear do? Worm gears provide high torque at low speed and can offer self-locking, which prevents backdriving when power is off in many designs.
- Do these motors require drivers or controllers? Some models are ready for direct DC supply, while others need compatible controllers or speed regulators to adjust RPM and direction.
- Can I mix AC and DC motors for a project? Generally not in the same drive path; ensure the motor type matches your power source and control electronics.
- How do I choose shaft size? Match the bore to the through-shaft clearance and any mounting hardware to avoid misalignment or binding.