DS125MG Digital Metal Gear Servo 10mm 7Kgf.cm 0.12sec for Glider Wing
The KST DS125MG delivers industry-benchmark wing servo performance at a price that transforms what competitive glider flying costs. At just 10mm thin and 28g, it fits directly into the tightest glider wing bays — sharing the exact form factor of leading premium servos — while delivering zero-backlash control, a coreless motor, and hardened steel gears that meet 90% of top-tier performance standards for less than half the price. Whether you're chasing thermals in F3J, ripping the slope in F3F, or optimizing lift in F5J, the DS125MG delivers the precision and reliability that competition pilots expect.
Key Features
- Ultra-Slim 10mm Profile: Identical form factor to leading premium wing servos — installs directly into existing servo bays on F3F, F3B, F3J, and F5J gliders without modification.
- Zero Backlash Geartrain: Hardened steel gears with precision fit deliver crisp, play-free control authority for exact surface positioning.
- Coreless DC Motor: Fast, linear response with smooth travel and consistent centering across the full range of motion.
- Dual Ball Bearings: Dual-bearing output shaft support reduces friction, enhances centering accuracy, and extends service life under sustained aerodynamic loads.
- Full CNC Aluminum Casing: Precision-machined alloy housing ensures accurate wing bay fitment, structural rigidity, and effective heat management.
- Programmable & Soft Start: Configurable travel limits with soft-start protection for precise surface tuning and linkage safety.
Technical Specifications
- Model: DS125MG Digital Metal Gear Servo
- Rated Voltage: DC 4.8V
- Operating Voltage: DC 4.8V – 6.0V
- Motor Type: Coreless DC Motor
- Gear Set Material: Hardened Steel
- Case Material: CNC Aluminum Alloy
- Bearings: Dual Ball Bearings (2BB)
- Position Sensor: Potentiometer
- Working Frequency: 1520μs / 333Hz
- Default Travel Angle: ±50° (100° Total)
- Operating Temperature: -10°C to +65°C
- Soft Start / Programmability: Yes (Programmable)
- Dimensions: 30.0 × 10.0 × 35.5 mm (±0.2mm)
- Weight: 28g (±10%)
Performance Ratings
-
Stall Torque:
- 6.0 kgf.cm @ 4.8V
- 7.0 kgf.cm @ 6.0V
-
Operating Speed (No-Load):
- 0.15 sec/60° @ 4.8V
- 0.12 sec/60° @ 6.0V
Dimensions & Sizing


Documentation
SHIPPING INFORMATION
Shipping Time and Rules
For non-pre-sale products, KST Servos processes orders within 5 working days of placement. Once confirmed, we will ship them based on the order time. In the case of out-of-stock items, we will inform you via email as soon as the lead time is determined.
ItemOrder Processing TimeItems in Stock5 working daysIndustrial Servo20-30 working days
We offer FREE SHIPPING in standard shipping way when order over $100, if you wanna receive your parcel within 7 days, please choose the Expedited shipping way.
Shipping MethodShipping FeeEstimated Shipping Time Standard Shipping(Order from 0-$100)$510-20 working daysStandard Shipping(Order Over $100)Free10-20 working daysExpedited Shipping (Including but not limited to DHL / FedEx / UPS / TNT)Depends on the weight7-10 working days
The shipping time should be subject to the time announced by the shipping company. Once the products of your order leave our warehouse, the actual delivery may be affected by events which are beyond our control. Thus, we do not assume any responsibility for any delay in delivery due to unexpected logistics related events.
If any logistics delay occurs, you may send an email to marketing@kstservos.com, and we will do our best to contact the logistics company to help resolve the issue.
PLEASE NOTE
Since the shipping policies are different in these countries (India, Saudi Arabia, United Arab Emirates, Malta), there is a different shipping fee based on the weight. Please check the shipping fee before pay the bill.
Order and Logistics Tracking
After the order is shipped, you will receive a notification email. You can click the link and skip to the shipping company‘s official website to check your package shipment status.
Tracking Your Order
- 4PX :http://track.4px.com
- 17Track:https://www.17track.net/en
- DHL:https://www.dhl.com/
VAT Fee
Due to the EU tax reform, VAT fees will be added to orders bound for EU member states if the standard shipping method is selected. Alternative shipping methods such as DHL do not add VAT fees. The recipient's VAT and EORI account number need to be provided.
Shipping
We will work quickly to ship your order as soon as possible. Once your order has shipped, you will receive an email with further information. Delivery times vary depending on your location.
Manufacturing
Our products are manufactured both locally and globally. We carefully select our manufacturing partners to ensure our products are high quality and a fair value.
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