Brushless Motor for 450/500-Class Electric Single-Rotor Series

Product has been archived, and is no longer available for purchase. This page is for reference only.



Product is NOT STOCKED at fulfilment center. Minimum order quantity of 50 required. 8+ week lead time. Contact sales for details.

NOTE: Use the pull-down menu above to select the shaft of your choice:

    • 5mm Edition, Standard (KDE500XF-SR14)
      • ф5mm shaft diameter, 22.5mm shaft extension, 60mm overall length

    Replacement Bearings: KDE500/550/600XF-BRK

    The new KDE Direct 500XF-925-G3 High-Performance Brushless Motor is an extremely efficient and powerful motor for any 450 through 500-class single-rotor helicopter or fixed-wing application. Using the latest Computer-Aided Magnetic Field Analysis software to design the most efficient and optimized design for high-level, performance-driven flight applications and the highest-quality materials and processes in manufacturing; the new "G3" series is the new generation in performance for the single-rotor and UAS marketplace. The motors are designed with performance and durability in-mind, with features unseen in the current market: (1) high-grade, 240°C continuous (340°C maximum) high-temperature solid-core copper windings for failure-free operation in extreme-climates, (2) Japanese-built, 0.2 mm silicon-steel stator laminations and Kevlar tie-wraps for high-efficiency performance, and (3) quad-bearing supported, ABEC-7 bearings for maintenance-free and worry-free flying for hundreds of hours. These are just a few of the advantages built-in to these motors, and every detail of the motors was scrutinized to produce the absolute best available; for a wide-range of flight applications.

    Motors include 200°C, 13 AWG silicone-wire leads and ф4.0mm 24K Bullet Connectors (KDEXF-BC40pre-soldered to the motor leads and ESC matching Bullet Connectors).


      Material: Neodymium N45UH

      Models: 450- through 500-class single-rotor and UAS applications (compatible with M4 x ф30mm and M3 x ф25mm mounting profiles) and ф5mm exit shaft (22.5mm extension).


      • Clear anodize, mirror-polish CNC gloss endbells
      • Black electro-plate, CNC gloss central core (flux ring)

      Full Specifications:

      Kv (Motor Velocity Constant) 925 RPM/V
      Kt (Motor Torque Constant) 0.0103 Nm/A
      Km (Motor Constant) 0.0769 Nm/√(W)
      Maximum Peak Current 83 A (2 s)
      Maximum Peak Power 1,845 W (2 s)
      Maximum Continuous Current* 58 A (180 s)
      Maximum Continuous Power* 1,295 W (180 s)
      Voltage Range 14.8 V (4S LiPo) - 34.8 V (8S LiHV)
      Io (@10V) 1.2 A
      Rm (Wind Resistance) 0.018 Ω
      Magnetic Poles 10 (12S10P)
      Bearings Quad, 696ZZ/MR106ZZ
      Mount Pattern M4 x ф30 mm, M3 x ф25 mm
      Stator Class 3514, 9T+9T, YY
      Stator Windings 10-Strand, ф0.30 mm
      Shaft Diameter ф5 mm (ф6 mm Internal)
      Shaft Length 22.5 mm
      Motor Dimension ф41 mm x 37.5 mm
      Motor Weight 155g (175g with Wire Leads)
      Motor Leads 13 AWG, 200°C
      Cooling System High-Volume Centrifugal Fan
      Motor Timing 5° - 15°
      ESC PWM Rate 8 - 32 kHz

      *: Brushless motor requires consistent open airflow (5 mph or greater) across the windings to maintain maximum continuous current and power ratings during operation. Performance figures are provided as guidelines for normal conditions and operation; environmental factors, such as air temperature and humidity, can significantly alter the maximum performance limits of the motor.


      We Also Recommend