Waveshare 40kg.cm Metal Serial Bus Servo, Programmable 360 deg Magnetic Encoder & Brushless Motor
Features 360° programmable magnetic encoder
Supports wide voltage range from 6 to 12.6V
Enables control of up to 253 servos via UART
Offers two-way feedback on multiple parameters
Includes an all-aluminum alloy case for durability
The Waveshare 40kg.cm Metal Serial Bus Servo, Programmable 360 deg Magnetic Encoder & Brushless Motor is a high-performance servo designed for advanced robotics and industrial applications. It features a robust metal case and a brushless motor, ensuring durability and reliability. The servo is equipped with a 360-degree programmable magnetic encoder, providing high precision and extended lifespan compared to traditional potentiometers.
This servo offers a wide voltage range from 6 to 12.6 volts, making it versatile for various power sources, including 3S lithium batteries. It delivers a substantial torque of 40kg.cm at 12V, making it suitable for demanding projects such as quadruped robots, hexapod walkers, and robotic arms. The servo supports multiple operation modes, including angle servo mode, speed closed-loop motor mode, and step mode, allowing for flexible control in diverse scenarios.
The servo provides two-way feedback, offering real-time data on position, load, speed, input voltage, current, and temperature. This feature is crucial for closed-loop automatic control systems. Additionally, the servo supports UART serial bus control, enabling the management of up to 253 servos simultaneously, although power supply considerations are necessary when using multiple units.
The all-aluminum alloy case enhances heat tolerance and mechanical performance, while the high-precision steel gears reduce noise and improve stability. The servo also includes an acceleration start-stop function for smoother motion and a one-button calibration feature for easy setup. An open-source control program and 3D model are available for further customization and development.
1x Waveshare 40kg.cm Metal Serial Bus Servo, Programmable 360 deg Magnetic Encoder & Brushless Motor
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.
United Kingdom consumers exercising their statutory Right of Cancellation are subject to different conditions. See the Statutory Right of Cancellation.
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 Authorisation (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, tyres, 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, odour-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 fulfil a customer request.
* United-Kingdom consumers retain their statutory Right of Cancellation on these items. Its exercise is subject to the conditions and exclusions set out in the Statutory Right of Cancellation, and any reimbursement may be reduced to reflect a loss in value resulting from handling beyond inspection.
How to Request a Return Authorisation (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.
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]".