Brushless Motor - KDE7208XF-135, Heavy-Lift Multi-Rotor UAS Series

Brushless Motor - KDE7208XF-135, Heavy-Lift Multi-Rotor UAS Series



  • One (1) KDE Direct XF UAS M8-RH Propeller Adapter Assembly (KDEXF-PA823-RH)

  • One (1) KDE Direct XF UAS M8-LH Propeller Adapter Assembly (KDEXF-PA823-LH)

  • One (1) KDE Direct XF UAS M10 Propeller Bracket Assembly (Black Edition)

  • Three (3) KDE Direct XF ф4.0mm 24K Bullet Connectors (KDEXF-BC40, Female)

  • Four (4) M5 x 0.8 x 8 mm Flat Head Phillips Head Machine Screws (Class 12.9)

  • Four (4) M4 x 0.7 x 8 mm Flat Head Phillips Head Machine Screws (Class 12.9)

  • Eight (8) M4 x 0.7 x 12 mm Socket Head Cap Screws (Class 12.9)

  • Four (4) M3 x 0.5 x 14 mm Socket Head Cap Screws (Class 12.9)

Add To Cart

The new KDE Direct 7208XF-135 (HE) Multi-Rotor Brushless Motor is an extremely efficient and powerful motor for numerous multi-rotor and UAS heavy-lift applications, and was designed to bring high-quality and vibration-free motors to the market. The motor incorporates a very high-efficiency (HE) 28-pole design, used in our industrial applications, and now brought to the UAS market for long-duration flight performance. 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) triple-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.

Motor includes 200°C, 14 AWG, 760mm silicone-wire leads and ф4.0mm 24K Bullet Connectors (KDEXF-BC40, pre-soldered to the motor leads and ESC matching Bullet Connectors).

UAS Multi-Rotor Brushless Motor Series Technology Review (PDF)


Material: Neodymium N45UH, 135Kv

Models: Universal mounting pattern provides simple installation for a wide-range of multi-rotor and UAS applications: M4 x ф35mm, M4 x ф40mm, M5 x ф40mm.


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

Compatible With:

  • Replacement Shaft: KDE7208XF-SR
  • Replacement Bearings: KDE72XF-BRK
  • Propeller Adapter (Right-hand): KDEXF-PA823-RH
  • Propeller Adapter (Left-hand): KDEXF-PA823-LH


Performance Data: 

KDE7208XF-135 (HE) Performance Testing Data Sheet (KDE Direct Propellers)





Full Specifications:

Kv (Motor Velocity Constant) 135 RPM/V
Kt (Motor Torque Constant) 0.0707 Nm/A
Km (Motor Constant) 0.2104 Nm/√(W)
Maximum Continuous Current* 58+ A (180 s)
Maximum Continuous Power* 2145+ W (180 s)
Maximum Efficiency > 93%
Voltage Range 22.2 V (6S LiPo) - 52.2 V (12S LiHV)
Io (@10V) 0.4 A
Rm (Wind Resistance) 0.113 Ω
Stator Poles 24 (24S28P, HE)
Magnetic Poles 28 (24S28P, HE)
Bearings Triple, 6900-2RS/6000-2RS
Mount Pattern M4 x ф35 mm, M5/M4 x ф40 mm
Stator Class 7208, 0.2 mm Japanese
Shaft Diameter ф10 mm (ф10 mm Internal)
Shaft Length 9.5 mm
Motor Diameter ф80 mm
Motor Length 37.5 mm
Motor Weight 380 g (445 g with Wires/Bullets)
Propeller Blade Size Up to 30.5"-DP (24.5"-DP Maximum on 12S)
Motor Timing 22° - 30°
ESC PWM Rate 16 - 32 kHz (600 Hz)

*: 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.


*Files are compressed as .rar files to decrease space & increase download speed.
To decompress the files, any reputable unarchiver will work such as WinRAR, 7-Zip, PeaZip, etc.

A note on shipping:
SpektreWorks is open for business Monday through Friday. Orders placed Friday evening, Saturday, and Sunday (Arizona time) will be processed and shipped the following Monday morning.