Gravity N20 Micro Metal Gear Motor w/ Integrated Drive (133rpm, 1:150)
Description
- Gravity N20 Micro Metal Gear Motor w/ Integrated Drive (133rpm, 1:150)
- Streamlines control with integrated drive
- Versatile 3V-6V voltage range
- Durable all-metal construction
- Compact and lightweight design
- High precision with 133 RPM output
The Gravity N20 Micro Metal Gear Motor w/ Integrated Drive (133rpm, 1:150) is designed to streamline motor control through its integrated drive chip and PWM servo control method. Suitable for a voltage range of 3V-6V, this motor is versatile, offering various gear ratios and output speeds to meet the needs of different application scenarios. Its all-metal construction ensures durability, while its compact size makes it an excellent choice for robotics, mechanical motion control, valve control, and door lock control systems.
The motor is equipped with a single PWM port that manages both speed and direction, which simplifies wiring and programming. It boasts an efficient performance with low standby power consumption and minimal current consumption in the absence of a control signal.
With an impressive speed of 20,000 RPM before gear reduction and a no-load output speed of 133 RPM after a 150:1 gearbox reduction, this motor is both powerful and precise. It also features a PPM signal resolution of 1μs and operates at a PWM drive frequency of 500 Hz. Despite its robust capabilities, the motor maintains a lightweight profile at just 10g and dimensions of 40mm in length, 12mm in width, and 20mm in height, making it a versatile component for a wide array of applications.
The motor is designed with a PH2.0-3P interface and adheres to the Gravity line sequence standard, which facilitates easy connection and insertion. It is an ideal motor choice for projects involving robotics, mechanical motion control, valve control, and door lock control, where compact size and reliable quality are paramount.
Please note that this product requires careful handling and should be installed by individuals with a good understanding of electronics and mechanical systems to prevent damage or injury.
- 1x Motor with Integrated Drive - Speed 133RPM (1:150)
- 1x Gravity 3-Pin Digital Sensor Cable

- 40 x 12 x 20 mm (L x W x H)
- Operating Voltage Range: 3 - 6V
- Rated Voltage: 6V
- No-load Current: 50 mA (under 6V)
- Static Current: Less than 1mA (no PWM control signal input)
- Stall Current: 640 mA
- Motor Speed (Unreduced): 20,000 RPM
- Gearbox Reduction Ratio: 150:1
- No-load Output Speed: 133 RPM
- Stall Torque: 1.0 kg*cm
- PPM Signal Resolution: 1 μs
- PPM Signal Positive Pulse Width Range: 500-2500 μs
- Forward Pulse Width Range: 500-1400 μs (max speed at 500 μs)
- Stop Pulse Width Range: 1400-1600 μs
- Reverse Pulse Width Range: 1600-2500 μs (max speed at 2500 μs)
- PWM Drive Frequency: 500 Hz
- Weight: 10 g
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Refund Policy
If you are not satisfied with a product purchased from the Site, you may request a return within 30 days from the delivery date, unless the product is listed under the Return Exceptions below or is subject to specific return conditions noted on the product page.
This return policy also applies, as a minimum standard, to products sold and fulfilled by third-party vendors through the Marketplace.
Please review the Return Conditions, Return Exceptions and the process on How to Request a Return Authorization (RA) before initiating a return request.
European consumers exercising their statutory Right of Withdrawal are subject to different conditions. See the Statutory Right of Withdrawal.
Returns under this policy concern non-defective products. In the case of a confirmed manufacturing defect, remedies are handled under the Warranty terms, at the Vendor's discretion. See the Warranty section.
Return Conditions
To qualify for a refund under the 30-day return policy, all of the following conditions must be met:
- A valid Return Authorization (RA) number must be obtained prior to returning the product. Returns without an RA number will be refused.
- The RA number is valid for 30 days. The returned item must be received within that period.
- The RA number must be included with the return.
- Products must be returned in unused, unmodified condition (e.g., no scratches, alterations, missing parts, or signs of installation/use) and in their original packaging, suitable for resale.
- Shipping fees are non-refundable. Return shipping costs are the responsibility of the customer, except in cases of a product confirmed defective through RobotShop's troubleshooting process or of a verified shipping error by RobotShop.
- Refunds are processed within 7 days after receipt and inspection of the returned item.
- A €100 cleaning fee may apply to domestic robots returned in used or unclean condition.
- A 20% restocking fee may apply to large-quantity returns of items ordered specifically for the customer from the manufacturer or not part of RobotShop's standard inventory.
Return Exceptions
The following products are not eligible for return or refund under this policy:
- Used, damaged, or modified products — Items that show signs of use, wear, or alteration, making them unsuitable for resale.
- Consumables * — Use and wear-and-tear components, altered or depleted through use (e.g., batteries, belts, brushes, gears, filament, tires, disposable bags, lubricants, greases, waxes, etc.). Not eligible for return once opened or used.
- Perishables — Goods liable to deteriorate or expire rapidly. Not eligible for return.
- Sealed goods (health or hygiene) — Items sealed for health-protection or hygiene reasons (e.g., masks, gloves, odor-absorbing products). Not eligible for return once unsealed.
- Build-it-yourself products and items requiring customer assembly * — Including robots & kits, robot parts, and other products requiring assembly or soldering. Not eligible for return once assembled, soldered, or installed.
- Digital Goods, Software, and Apps * — Final sale only, due to licensing restrictions.
- Clearance Items * — Products identified as clearance or final sale, including end-of-life or discontinued items.
- Custom-made, personalized, or special-order items — Products manufactured, configured, adapted, or built to the customer's own specifications and requirements.
- On-Demand Items * — Standard catalogue products not stocked by RobotShop and ordered specifically to fulfill a customer request.
- Professional & Specialized Equipment — See the Professional & Specialized Equipment Warranty page and Professional & Institutional Buyers (B2B) section in the Terms & Conditions.
* European consumers retain their statutory Right of Withdrawal on these items. Its exercise is subject to the conditions and exclusions set out in the Statutory Right of Withdrawal, and any reimbursement may be reduced to reflect a loss in value resulting from handling beyond inspection.
How to Request a Return Authorization (RA)
While the same return policy applies, these orders require a separate contact process for returns.
- RobotShop Fulfilled Orders → submit a support ticket from your account under My Support Tickets, or contact us through our Support Center.
- Marketplace Vendor Orders → submit a ticket from your account under My Marketplace Tickets to contact the vendor directly.
Note: Marketplace vendor products are normally labelled with SKUs starting with RM, and identified on the product page with the mention "Sold and fulfilled by [Vendor Name]".