JGB37-520 12V 7 RPM DC Gear Motor - Ultra-Slow 37mm Spur Gearbox with Offset 6mm D-Shaft

Specifications

• Model: JGB37-520

• Operating Voltage: 12V DC

• No-Load Speed: 7 RPM (Ultra-Slow)

• Gearbox Type: Metal Spur Gear

• Shaft Type: Offset D-Shape

• Shaft Diameter: 6mm (5.5mm at the flat cut)

• Shaft Length: 15mm Total (11.5mm D-cut)

• Mounting Holes: 6 x M3 (Threaded)

• Gearbox Diameter: 37mm

• Gearbox length(L) :29mm

• Motor Body Diameter: 33mm

• Motor Body Length: 22mm

• Terminals: Dual Solder Tabs

Key Applications and Projects

• Motorized Camera Sliders: Providing the incredibly slow, jitter-free pull required for cinematic macro timelapses.

• Heavy-Duty Rotisseries / Turntables: Slowly rotating display items in storefronts or turning heavy components in DIY painting/welding booths.

• Automated Winches & Hoists: Spooling up a heavy-duty line to slowly lift trap doors, heavy smart-blinds, or theater props.

Unlock New Capabilities (Project Evolution)

• The Automated Sun-Tracking Solar Panel: Solar panels are most efficient when pointed directly at the sun, but the sun moves incredibly slowly. Pair this ultra-slow 7 RPM motor with an Arduino, two light-dependent resistors (LDRs), and an L298N motor driver. The Arduino can read the light difference and pulse this high-torque motor for just a second at a time, slowly tilting a heavy wooden or metal solar panel frame to perfectly track the sun from dawn to dusk!

ACCESSORIES / PACKAGE INCLUDED

• 1 x JGB37-520 DC12V 7 RPM Miniature Speed Reduction Gear Motor

FREQUENTLY ASKED QUESTIONS (FAQ)

1. What is the operating voltage for this motor? This motor is optimized to run on a standard 12V DC power supply.

2. How fast does 7 RPM actually spin? 7 Revolutions Per Minute means the shaft completes one full 360-degree turn approximately every 8.5 seconds. It is exceptionally slow.

3. Does this motor have more torque than the 66 RPM version? Yes, significantly more. Because the gear reduction is vastly higher to achieve 7 RPM, the torque output is multiplied drastically.

4. What size is the output shaft? The shaft has a 6mm outer diameter.

5. Why is the shaft off-center? This uses an eccentric gearbox design. The internal spur gears require the final output shaft to be placed off-center to fit the high reduction ratio inside the 37mm casing.

6. What does "D-Shape" mean? The 6mm shaft has an 11.5mm long flat section machined into it. This creates a "D" profile, preventing pulleys or hubs from slipping when a set screw is tightened against it.

7. Is this a worm gear motor? No. This motor uses cylindrical spur gears.

8. Is this motor self-locking? Spur gears are generally not completely self-locking like worm gears. However, because the gear reduction ratio is so massive on the 7 RPM model, there is extremely high mechanical resistance, making it very difficult to back-drive by hand.

9. Can I reverse the direction of rotation? Yes. By simply swapping the positive and negative power connections, the motor will spin in the reverse direction.

10. What size mounting screws do I need? The gearbox face accepts standard metric M3 machine screws.

11. How many mounting holes are there? There are exactly six M3 threaded mounting holes on the face of the gearbox.

12. How long is the actual shaft? The protruding shaft is 15mm long in total.

13. Can I run this motor on 5V? Yes, a 12V DC motor will spin on 5V, but it will run incredibly slow (around 3 RPM) and will lose a significant amount of its torque.

14. Is this motor waterproof? No, the metal housing, seams, and rear solder terminals are exposed to the elements. It must be protected in a weatherproof enclosure if used outdoors.

15. Can I control the speed of this motor? Yes, using a standard PWM (Pulse Width Modulation) DC motor speed controller, you can slow it down even further than 7 RPM.

16. How do I connect wires to this motor? There are two metal solder tabs on the rear of the black motor body. You will need a soldering iron to attach your power wires.

17. Does the motor come with wires already attached? No, it ships with bare solder terminals ready for your custom wiring.

18. What is the diameter of the cylindrical motor body? The black and silver motor section behind the gearbox has a diameter of 33mm.

19. What is the diameter of the gearbox? The front silver gearbox measures exactly 37mm in diameter.

20. Will this work for a DIY RC car? No, 7 RPM is far too slow for any standard wheeled rover or RC vehicle. This motor is meant specifically for heavy lifting, slow winches, or rotating display bases.