BLDC MotorHobbywing XRotor FPV racing motors · Ø37.2 mm

XRotor 3110 900KV

Name: XRotor 3110 900KV
Brand: Hobbywing

3110 900 KV drone motor from Hobbywing for 4-6S: up to 3626 g thrust with a 6S:HQ8x4.5x3;HQ9x4x3;HQ9x5x3 prop.

Manufacturer datasheet: Hobbywing · XRotor 3110 900KV ↗ (checked 2026-10-18)Maker profile & contacts →

Figures are copied from the maker’s published datasheet; curves are calculated from them. Confirm with the manufacturer before ordering. Not stated on the datasheet, estimated from it: rated point (estimated from KV, voltage and maximum current), inductance, rotor inertia, insulation class, IP rating.

Applications:Drones & UAV

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How this motor is made

Full manufacturing overview: 70 mm Outer-rotor BLDC Motor →

Ø37.2 mm frame; built with the same process as the 70 mm outer-rotor reference series.

Assembly steps: 12
Equipment types: 14
BOM lines: 13
PRD suppliers: 85

1. Stator lamination stamping & interlocking
2. Stator powder coating
3. Outer-stator winding
4. Terminal soldering
5. Stator in-process test
6. Trickle impregnation (optional)
7. Stator mounting & Hall board
8. Rotor cup assembly
9. Magnetizing
10. Rotor balancing
11. Final assembly
12. End-of-line test

Export certification: Low-voltage motor without electronics

Rated power: 298 W
Rated torque: 0.149 N·m
Rated speed: 19,118 rpm
Rated efficiency: 82.7 %

Performance curves

Right axis:

SpeedEfficiency (right axis)

Calculated with the linear DC-motor model (constant 22.2 V supply, ignoring resistance rise with temperature).

Full specifications

General

Motor type: BLDC Motor
Series: Hobbywing XRotor FPV racing motors
Frame / flange: Ø37.2 mm

Rated Values

Rated voltage: 22.2 V
Rated power: 298 W
Rated torque: 0.149 N·m
Rated speed: 19,118 rpm
Rated current: 16.2 A

Performance

Stall torque: 3.97 N·m
No-load speed: 19,863 rpm
Rated efficiency: 82.7 %
Peak efficiency: 85.3 %

Electrical

Torque constant Kt: 0.0106 N·m/A
Back-EMF constant Ke: 1.11 V/krpm
Resistance: 0.059 Ω
Inductance: 0.0885 mH
No-load current: 2.2 A
Stall current: 376 A
Poles: 14
Electrical time constant: 1.5 ms
Mechanical time constant: 0.419 ms

Mechanical

Rotor inertia: 8 g·cm²
Body length: 27 mm
Shaft diameter: 5 mm
Weight: 0.089 kg
Power density: 3,352 W/kg
Insulation class: B
Protection: IP40

Compatible drivers

All drivers →

Drivers whose supply voltage covers this motor and whose continuous current is at least its rated current; drivers from the same maker first. Confirm Hall/encoder type and settings with the maker.

Model	Maker	Motor type	Supply	Cont. / peak current	Feedback
DEPC-09024-OPEA	ZP Motors	BLDC, Servo	18–90 V DC	16 A / 35 A	Hall sensors, Incremental encoder, Absolute encoder
BLDA0401A1	Motion Control	BLDC	12–55 V DC	18 A
PSDB-4031A1	Motion Control	BLDC	12–55 V DC	18 A
NU-BL5020-01	Nuelectronics	BLDC	18–50 V DC	20 A / 25 A	Hall sensors, Sensorless, Open loop, Closed loop
NU-BL5020-02	Nuelectronics	BLDC, Servo	18–50 V DC	20 A	Hall sensors, Incremental encoder
DCPC-09030-OPE	ZP Motors	BLDC, Servo	18–90 V DC	21 A / 42 A	Hall sensors, Incremental encoder