The KST DS589MG V8.0 Mini Digital HV Metal Gear Servo is a 15mm-thick high-voltage mini servo for RC helicopter cyclic use, fixed-wing aircraft, and compact high-load control systems. KST positions it as a small and light servo with strong torque and fast response for its size class. Verified KST data lists a DC 6.0V-8.4V voltage range, up to 9.2Kgf.cm torque at 8.4V, and 0.08sec/60deg no-load speed at 8.4V. The servo uses a coreless DC motor, hardened steel gears, aluminum alloy case, potentiometer feedback, and programmable soft start. At 35.5 x 15 x 32.5mm and about 40g, DS589MG V8.0 offers a compact HV mini-servo option for builders who need more torque than micro servos can provide. Product Images Features 9.2Kgf.cm peak torque - Listed stalling torque reaches 9.2Kgf.cm at 8.4V. 0.08sec no-load speed - Listed speed reaches 0.08sec/60deg at 8.4V. HV voltage range - Supports DC 6.0V-8.4V. Helicopter and fixed-wing use - KST positions it for helicopter cyclic and fixed-wing applications. Coreless DC motor - Supports responsive servo movement. Hardened steel gears - Improves drivetrain durability under load. Aluminum alloy case - Adds stiffness and heat dissipation. 25T 6mm spline - Uses the listed output shaft spline. Programmable soft start - KST lists soft start and programmability. 40g mini-servo format - Balances compact size with stronger output. Specifications Parameter Value Model KST DS589MG V8.0 Shopify SKU KST-DS589MG-V80 Rated Voltage DC 7.4V Voltage Range DC 6.0V-8.4V Stalling Torque 6.5Kgf.cm @ 6.0V; 8.0Kgf.cm @ 7.4V; 9.2Kgf.cm @ 8.4V No-load Speed 0.10sec/60deg @ 6.0V; 0.09sec/60deg @ 7.4V; 0.08sec/60deg @ 8.4V Working Frequency 1520us / 333Hz Default Travel Angle +/-60deg = 120deg total Command Interface PWM command; pulse length 900us-2100us Signal Voltage High min. 3.3V, max. 5.0V; low min. 0.0V, max. 1.5V Output Shaft Spline 25T, 6mm Case Material Aluminum alloy Motor Type Coreless DC motor Gear Set Material Hardened steel Position Sensor Potentiometer Case Dimensions 35.5 x 15 x 32.5mm +/-0.2mm Weight 40g +/-10% Temperature Range -20C to +65C Soft Start Programmable Programmable Yes Reference Documents KST DS589MG V8.0 Technical Specification Application RC helicopter cyclic control - KST positions DS589MG for helicopter cyclic applications. Fixed-wing aircraft - Suitable where torque, speed, and size match the control surface requirements. HV receiver systems - Works within DC 6.0V-8.4V when powered correctly. High-load mini-servo bays - Provides more torque than many smaller micro servos. Fast control linkages - Useful where fast response and metal gears are required. Servo upgrade projects - Can replace compatible mini servos after checking dimensions, spline, and voltage. Packing List Description Quantity KST DS589MG digital HV servo 1 Plastic servo horn 5 Servo horn screw 1 Rubber grommet 4 Eyelet 4 Mounting screw 4 FAQ .faq-accordion details { border-bottom: 1px solid #e6eef8; padding: 14px 0; } .faq-accordion summary { list-style: none; cursor: pointer; font-size: 16px; font-weight: 700; color: #1f2933; position: relative; padding-right: 32px; } .faq-accordion summary::-webkit-details-marker { display: none; } .faq-accordion summary::after { content: "\203A"; position: absolute; right: 4px; top: 50%; transform: translateY(-50%) rotate(90deg); color: #007fff; font-size: 28px; line-height: 1; transition: transform 0.2s ease; } .faq-accordion details[open] summary::after { transform: translateY(-50%) rotate(270deg); } .faq-accordion p { margin: 12px 0 0; color: #4b5563; line-height: 1.65; } How does DS589MG compare with MS589? KST notes MS589 is the same size class but uses a magnetic position sensor. The DS589MG technical specification lists potentiometer feedback. Does OpenELAB list multiple Shopify variants for this product? No. The current Shopify product is a single variant with SKU KST-DS589MG-V80. What is the maximum listed torque? The technical specification lists 9.2Kgf.cm at 8.4V. What is the fastest listed speed? The fastest listed no-load speed is 0.08sec/60deg at 8.4V. What voltage range does it support? The listed voltage range is DC 6.0V-8.4V. What is included in the package? The package includes one DS589MG digital HV servo, five plastic servo horns, one servo horn screw, four rubber grommets, four eyelets, and four mounting screws. What spline does it use? The technical specification lists a 25T, 6mm output shaft spline. What should I check before installation? Confirm the 35.5 x 15 x 32.5mm case, 25T 6mm spline, HV power range, and servo arm clearance.
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