KDE3520XF-400
Overview
Recommended ESC: KDE Direct UAS 35A+ HVC Multi-Rotor Series
Alternate ESC: KDE Direct UAS 55A+ Multi-Rotor Series
Recommended Propeller: KDE Direct 15.5" x 5.3 Triple-Propeller Blades
Includes:
- One (1) KDE Direct XF UAS Motor Adapter Plate Assembly (35XX Edition)
- One (1) KDE Direct XF UAS Propeller Bracket Assembly (Clear Edition)
- One (1) KDE Direct XF UAS Propeller Bracket Adapter (ф4.0 x ф6.0 x 2.5mm)
- Three (3) KDE Direct XF ф3.5mm 24K Bullet Connectors (KDEXF-BC35, Female)
- Four (4) M4 x 0.7 x 8 mm Flat Head Phillips Head Machine Screws (Class 12.9)
- Two (2) M3 x 0.5 x 10 mm Socket Head Cap Screws (Class 12.9)
Replacement Parts:
The new KDE Direct 3520XF-400 Multi-Rotor Brushless Motor is an extremely efficient and powerful motor for numerous multi-rotor and sUAS heavy-lift applications, and was designed to bring high-quality and vibration-free motors to the market. 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, 15 AWG, 760mm silicone-wire leads and ф3.5mm 24K Bullet Connectors (KDEXF-BC35, pre-soldered to the motor leads and ESC matching Bullet Connectors).
UAS Multi-Rotor Brushless Motor Series Technology Review (PDF)Specifications
Material: Neodymium N45UH
Models: Universal mounting pattern provides simple installation for a wide-range of multi-rotor and sUAS applications: M3 x ф25mm, M4 x ф25mm, M3 x ф32mm, M2.5 x ф32mm.
Finish:
- Clear anodize, mirror-polish CNC gloss endbells
- Black electro-plate, CNC gloss central core (flux ring)
Compatible With:
- Replacement Shaft: KDE3520XF-SR
- Replacement Bearings: KDE35XF-BRK
- Propeller Adapter (Right-hand): KDEXF-PA617-RH
- Propeller Adapter (Left-hand): KDEXF-PA617-LH
Full Specifications:
| Kv (Motor Velocity Constant) | 400 RPM/V |
| Kt (Motor Torque Constant) | 0.0239 Nm/A |
| Km (Motor Constant) | 0.0855 Nm/√(W) |
| Maximum Continuous Current* | 45 A (180 s) |
| Maximum Continuous Power* | 1335 W (180 s) |
| Voltage Range | 14.8 V (4S LiPo) - 34.8 V (8S LiHV) |
| Io (@10V) | 0.3 A |
| Rm (Wind Resistance) | 0.078 Ω |
| Stator Poles | 12 (12S14P) |
| Magnetic Poles | 14 (12S14P) |
| Bearings | Triple, MR105ZZ, 625ZZ |
| Mount Pattern | M4/3 x ф25 mm, M3/2.5 x ф32 mm |
| Stator Class | 3520, 0.2 mm Japanese |
| Shaft Diameter | ф4 mm (ф5 mm Internal) |
| Shaft Length | 5.5 mm |
| Motor Diameter | ф42.2 mm |
| Motor Rotor Inertia | 0.240 kg*cm^2 |
| Motor Length | 45 mm |
| Motor Weight | 190 g (245 g with Wires/Bullets) |
| Propeller Blade Size | Up to 18.5"-TP (15.5"-TP Maximum on 8S) |
| Motor Advance Timing | 22° - 30° |
| Motor Drive Frequency | 16 - 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.
Performance Data
Manuals & Models
Manuals
- KDE3520XF-400 Design Geometry Dimensions Specification Sheet (PDF)
- KDE3520XF-400 Universal Mounting Pattern Specification Sheet (PDF)
- KDE3520XF-400 Components and Hardware Specification Sheet (PDF)
- KDE3520XF-400 Motor Adapter Plate Specification Sheet (PDF)
- UAS Multi-Rotor Brushless Motor Series Technology Review (PDF)
- KDE Direct Design Engineering - Episode VIII: XF M-R Brushless Motors (YouTube)
Models
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