ClassA Motor
BLDC MotorT-MOTOR U series · Ø42.5 mm

U5 KV400

400 KV drone motor from T-MOTOR for 3-8S: up to 2850 g thrust with a 16*5.4CF prop.

Manufacturer datasheet: T-MOTOR · U5 KV400 ↗ (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
+ Add to compare

How this motor is made

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

Ø42.5 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. 1. Stator lamination stamping & interlocking
  2. 2. Stator powder coating
  3. 3. Outer-stator winding
  4. 4. Terminal soldering
  5. 5. Stator in-process test
  6. 6. Trickle impregnation (optional)
  7. 7. Stator mounting & Hall board
  8. 8. Rotor cup assembly
  9. 9. Magnetizing
  10. 10. Rotor balancing
  11. 11. Final assembly
  12. 12. End-of-line test

Export certification: Low-voltage motor without electronics

Rated power
147 W
Rated torque
0.121 N·m
Rated speed
11,591 rpm
Rated efficiency
92.4 %

Performance curves

Right axis:
02,5005,0007,50010,00012,50002040608010002468Torque (N·m)Speed (rpm)Efficiency (%)Rated point
SpeedEfficiency (right axis)

Calculated with the linear DC-motor model (constant 29.6 V supply, ignoring resistance rise with temperature).

Full specifications

General

Motor type
BLDC Motor
Series
T-MOTOR U series
Frame / flange
Ø42.5 mm

Rated Values

Rated voltage
29.6 V
Rated power
147 W
Rated torque
0.121 N·m
Rated speed
11,591 rpm
Rated current
5.37 A

Performance

Stall torque
6.08 N·m
No-load speed
11,826 rpm
Rated efficiency
92.4 %
Peak efficiency
93.3 %

Electrical

Torque constant Kt
0.0239 N·m/A
Back-EMF constant Ke
2.5 V/krpm
Resistance
0.116 Ω
Inductance
0.174 mH
No-load current
0.3 A
Stall current
255 A
Poles
14
Electrical time constant
1.5 ms
Mechanical time constant
0.366 ms

Mechanical

Rotor inertia
18 g·cm²
Body length
37.5 mm
Shaft diameter
5 mm
Weight
0.195 kg
Power density
753 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.

ModelMakerMotor typeSupplyCont. / peak currentFeedback
APS-06D48-RALTETechServoBLDC, Servo, DC18–48 V DC6 A / 18 AIncremental encoder, Hall sensors, Sensorless
ZM-BL4810FZemingBLDC18–50 V DC10 AHall sensors, Sensorless
ZM-BL48D10ZemingBLDC18–50 V DC10 AHall sensors, Sensorless
ZM-BL4810KZemingBLDC18–50 V DC10 AHall sensors, Sensorless
DBL-2420RMayi MotorBLDC22–36 V DC10 A
DBL-4820RMayi MotorBLDC27–56 V DC10 A

Related models

XRotor V11122 60KV
3.93 kW · 88.8 V
XRotor V11130 55KV
4.54 kW · 88.8 V
XRotor 2807 1300KV
231 W · 22.2 V
XRotor 2807 1500KV
216 W · 18.5 V
XRotor 2807 1700KV
192 W · 14.8 V
XRotor 3110 900KV
298 W · 22.2 V
XRotor 3110 1150KV
325 W · 22.2 V
XRotor M13842 HighProt 34KV
5.33 kW · 88.8 V
XRotor M13842 HighProt 38KV
5.35 kW · 88.8 V
XRotor M5208 HighProt 320KV
156 W · 22.2 V
XRotor M5208 HighProt 380KV
156 W · 22.2 V
XRotor M5208 Light 340KV
228 W · 22.2 V
XRotor M5208 Light 380KV
229 W · 22.2 V
XRotor M6208 Light 155KV
253 W · 44.4 V
XRotor M6208 Light 310KV
254 W · 22.2 V
XRotor V5212 275KV
698 W · 44.4 V
XRotor V6215 210KV
980 W · 44.4 V
XRotor V9626 160KV
2.57 kW · 44.4 V
XRotor M10005 HighProt 100KV
1.95 kW · 44.4 V
XRotor M10005 Light 90KV
1.2 kW · 44.4 V
XRotor M4006 HighProt 330KV
94.1 W · 22.2 V
XRotor M6210 HighProt 170KV
374 W · 44.4 V
XRotor M6210 HighProt 320KV
371 W · 22.2 V
XRotor M6215 HighProt 160KV
459 W · 44.4 V
XRotor M6215 HighProt 320KV
457 W · 22.2 V
XRotor M8108 HighProt 85KV
286 W · 44.4 V
XRotor M8108 HighProt 100KV
289 W · 44.4 V
XRotor M8108 Light 85KV
334 W · 44.4 V
XRotor M8108 Light 100KV
339 W · 44.4 V
XRotor M8108 Light 150KV
328 W · 22.2 V
XRotor M8110 HighProt 95KV
411 W · 44.4 V
XRotor M8110 HighProt 110KV
413 W · 44.4 V
XRotor M8110 Light 95KV
401 W · 44.4 V
XRotor M8110 Light 110KV
403 W · 44.4 V
RTF 2810 1100KV
277 W · 22.2 V
RTF 2812 900KV
240 W · 22.2 V
RTF 2812 1100KV
302 W · 22.2 V
RTF 2814 880KV
312 W · 22.2 V
RTF 2814 1100KV
316 W · 22.2 V
RTF 3115 900KV
361 W · 22.2 V
RTF 3115 1050KV
501 W · 22.2 V
RTF 4140 300KV
2.04 kW · 44.4 V
RTF 4214 380KV
546 W · 29.6 V
RTF 4214 440KV
644 W · 29.6 V
RTF 4214 500KV
542 W · 22.2 V
RTF 4214 660KV
720 W · 22.2 V
RTF 4215 400KV
644 W · 29.6 V
RTF 4215 600KV
720 W · 22.2 V
RTF 4218 350KV
672 W · 29.6 V
RTF 4218 560KV
746 W · 22.2 V
RTF 4720 300KV
1.16 kW · 44.4 V
RTF 4720 360KV
940 W · 29.6 V
RTF 5315 220KV
1.36 kW · 44.4 V
RTF 5315 360KV
1.42 kW · 29.6 V
RTF 5320 200KV
1.57 kW · 44.4 V
RTF 5320 350KV
1.79 kW · 29.6 V
RTF 5324 / 5330 205KV
1.92 kW · 44.4 V
RTF 5324 / 5330 220KV
2.33 kW · 44.4 V
RTF 4315 360KV
665 W · 29.6 V
RTF 4315 520KV
735 W · 22.2 V
RTF 4320 380KV
996 W · 29.6 V
XRotor V13823 60KV
19.3 kW · 88.8 V
XRotor V13828 55KV
22.1 kW · 88.8 V
XRotor V6212 180KV
728 W · 44.4 V
XRotor V8014 170KV
1.06 kW · 44.4 V
XRotor V8017 160KV
1.75 kW · 44.4 V
XRotor 2207.5 1980KV
182 W · 22.2 V
XRotor 2207.5 1780KV
156 W · 22.2 V
SunnySky 4014 KV400
439 W · 14.8 V
SunnySky 4014 KV330
729 W · 22.2 V
SunnySky 5206 KV340
452 W · 14.8 V
SunnySky 4006 KV380
326 W · 22.2 V
SunnySky 4006 KV740
733 W · 22.2 V
SunnySky 4008 KV380
262 W · 14.8 V
SunnySky 4010 KV375
747 W · 22.2 V
E-R2204 KV2300
340 W · 14.8 V
E-R2207 KV1800
759 W · 22.2 V
E-R2207 KV2580
730 W · 14.8 V
E-R2205 KV2300
530 W · 14.8 V
E-R2205 KV2500
598 W · 14.8 V
R2205 KV2300
532 W · 14.8 V
R2205 KV2500
609 W · 14.8 V
R2204 KV2300
332 W · 14.8 V
R2207 KV1800
1.14 kW · 22.2 V
R2207 KV2580
770 W · 14.8 V
R1104 KV5500
220 W · 14.8 V
R1104 KV7500
147 W · 11.1 V
R1106 KV5500
221 W · 14.8 V
R1106 KV6500
110 W · 7.4 V
R1106 KV8000
141 W · 7.4 V
V2806 KV400
223 W · 22.2 V
V2806 KV650
228 W · 14.8 V
V3506 KV400
288 W · 22.2 V
V3506 KV650
363 W · 14.8 V
V3508 KV380
373 W · 22.2 V
V3508 KV580
362 W · 14.8 V
V3508 KV700
470 W · 14.8 V
V4004 KV300
223 W · 22.2 V
V4004 KV400
298 W · 22.2 V
V4006 KV320
365 W · 22.2 V
V4006 KV380
452 W · 22.2 V
V4006 KV740
593 W · 14.8 V
V4008 KV380
519 W · 22.2 V
V4008 KV600
474 W · 14.8 V
V4014 KV330
749 W · 22.2 V
V4014 KV400
888 W · 22.2 V
V5208 KV340
715 W · 22.2 V
V5210 KV300
1.08 kW · 22.2 V
V4010 KV375
738 W · 22.2 V
V8110 KV90
1.37 kW · 44.4 V
V8110 KV100
2.33 kW · 44.4 V
V8110 KV120
2.99 kW · 44.4 V
V8110 KV170
1.53 kW · 22.2 V
V8110 KV190
2.08 kW · 22.2 V
V8117 KV100
2.02 kW · 44.4 V
V8117 KV120
4.53 kW · 44.4 V
V8117 KV90
2.32 kW · 44.4 V
X3515S KV400
1.09 kW · 22.2 V
X4110S KV340
669 W · 22.2 V
X4110S KV400
1.09 kW · 22.2 V
X4110S KV460
1.11 kW · 22.2 V
X4110S KV580
906 W · 18.5 V
X4110S KV680
701 W · 14.8 V
X5212S KV230
2.49 kW · 44.4 V
X5212S KV280
1.17 kW · 22.2 V
X5212S KV340
2.4 kW · 22.2 V
X6212S KV180
1.3 kW · 44.4 V
X6212S KV300
1.62 kW · 22.2 V
X6212S KV340
1.87 kW · 22.2 V
X6215S KV170
2.25 kW · 44.4 V
X6215S KV220
2.98 kW · 44.4 V
X6215S KV195
2.48 kW · 44.4 V
X6215S KV350
2.23 kW · 22.2 V
X6215S KV275
2.6 kW · 29.6 V
X8012S KV100
1.63 kW · 44.4 V
X8012S KV120
2.23 kW · 44.4 V
X8012S KV130
2.78 kW · 44.4 V
X8012S KV150
4.42 kW · 44.4 V
X8016S KV90
2.86 kW · 44.4 V
X8016S KV100
4 kW · 44.4 V
X8016S KV120
3.44 kW · 44.4 V
X8020S KV100
4.12 kW · 44.4 V
X8020S KV120
5.69 kW · 44.4 V
X8030S KV100
5.5 kW · 44.4 V
X8030S KV120
8.06 kW · 44.4 V
X8318S KV100
3.23 kW · 44.4 V
X8318S KV120
4.41 kW · 44.4 V
X3510S KV380
558 W · 22.2 V
X3510S KV700
518 W · 14.8 V
X4112S KV340
930 W · 22.2 V
X4112S KV400
1.24 kW · 22.2 V
X4112S KV450
1.92 kW · 22.2 V
MN705-S KV125
2.5 kW · 44.4 V
MN705-S KV140
3.22 kW · 44.4 V
MN705-S KV260
2.29 kW · 22.2 V
Antigravity MN1005 V2.0 KV100
1.57 kW · 44.4 V
MN1010 KV90
3.15 kW · 44.4 V
MN1010 KV135
5.67 kW · 44.4 V
U8II PRO KV100
1.58 kW · 44.4 V
Antigravity MN2806 EVO KV650
165 W · 14.8 V
MN1115 KV110
3.44 kW · 51.8 V
MN1115 KV130
3.42 kW · 44.4 V
MN1118 KV90
2.79 kW · 51.8 V
MN1118 KV108
2.73 kW · 44.4 V
MN1123 KV53
2.96 kW · 88.8 V
MN1130 KV45
3.94 kW · 88.8 V
MN1130 KV53
3.61 kW · 88.8 V
MN1315 KV100
4.07 kW · 51.8 V
MN1320 KV49
3.59 kW · 88.8 V
MN1325 KV47
4.21 kW · 88.8 V
MN1330 KV40
4.2 kW · 88.8 V
T-MOTOR 2807 KV1250
623 W · 22.2 V
T-MOTOR 2810 KV900
534 W · 22.2 V
T-MOTOR 2812 KV900
813 W · 29.6 V
T-MOTOR 2814 KV900
1 kW · 29.6 V
T-MOTOR 3110 KV1580
1.01 kW · 22.2 V
T-MOTOR 3115 KV900
897 W · 22.2 V
T-MOTOR 4214 KV380
1.26 kW · 44.4 V
T-MOTOR 4214 KV400
1.07 kW · 44.4 V
T-MOTOR 4720 KV320
3.14 kW · 44.4 V
T-MOTOR 4720 KV380
1.82 kW · 44.4 V
T-MOTOR 5315 KV280
3.01 kW · 44.4 V
T-MOTOR 5318 KV280
2.67 kW · 44.4 V
V804 KV170
5.78 kW · 44.4 V
U8 Lite L KV95
491 W · 44.4 V
U8 Lite L KV110
593 W · 44.4 V
V602 KV180
2.22 kW · 44.4 V
MN1015 KV70
6.92 kW · 88.8 V
MN1018 KV72
8.25 kW · 88.8 V
V10 KV160
8.27 kW · 44.4 V
V10L KV170
10.7 kW · 44.4 V
Antigravity MN6007 II KV160
1.22 kW · 44.4 V
Antigravity MN6007 II KV320
1.13 kW · 22.2 V
Antigravity MN8012 KV100
2.1 kW · 44.4 V
Antigravity MN8014 KV100
2.72 kW · 44.4 V
Antigravity MN8017 KV120
3.61 kW · 44.4 V
U8II Lite KV100
466 W · 44.4 V
Antigravity MN2806 KV400
199 W · 22.2 V
Antigravity MN2806 KV650
173 W · 14.8 V
MN4110 KV300
543 W · 22.2 V
MN4110 KV340
697 W · 22.2 V
MN4110 KV400
799 W · 22.2 V
MN4112 KV320
885 W · 22.2 V
MN4112 KV420
1.23 kW · 22.2 V
MN4116 KV340
979 W · 22.2 V
MN4116 KV450
1.36 kW · 22.2 V
Antigravity MN4006 EVO KV380
327 W · 22.2 V
U3 KV700
97.4 W · 14.8 V
U7 KV280
250 W · 29.6 V
U7 KV420
430 W · 29.6 V
U7 KV490
614 W · 29.6 V
MN3110 KV470
366 W · 22.2 V
MN3110 KV700
519 W · 22.2 V
MN3110 KV780
549 W · 22.2 V
MN3510 KV360
346 W · 22.2 V
MN3510 KV630
310 W · 14.8 V
MN3510 KV700
358 W · 14.8 V
MN3515 KV400
956 W · 29.6 V
MN4010 KV370
525 W · 29.6 V
MN4010 KV475
622 W · 29.6 V
MN4010 KV580
693 W · 29.6 V
MN4012 KV340
718 W · 29.6 V
MN4012 KV400
860 W · 29.6 V
MN4012 KV480
1.01 kW · 29.6 V
MN4014 KV330
850 W · 29.6 V
MN4014 KV400
1.02 kW · 29.6 V
MN5208 KV340
845 W · 22.2 V
MN3508 KV380
324 W · 22.2 V
MN3508 KV580
242 W · 14.8 V
MN3508 KV700
317 W · 14.8 V
MN5212 KV340
960 W · 29.6 V
MN5212 KV420
1.54 kW · 29.6 V
MN2212 KV780
200 W · 14.8 V
MN2212 KV920
225 W · 14.8 V
P60 Pin KV170
2.1 kW · 51.8 V
P60 Pin KV340
1.78 kW · 29.6 V
Antigravity MN4004 KV300
271 W · 22.2 V
Antigravity MN4006 KV380
385 W · 22.2 V
MN601-S KV170
1.67 kW · 44.4 V
MN601-S KV320
1.32 kW · 22.2 V
MN605-S KV170
1.97 kW · 44.4 V
MN605-S KV320
1.22 kW · 22.2 V
MN701-S KV135
2.1 kW · 44.4 V
MN701-S KV280
1.81 kW · 22.2 V
Antigravity MN7005 KV115
807 W · 44.4 V
Antigravity MN7005 KV230
762 W · 22.2 V
U8 Lite KV85
273 W · 44.4 V
U8 Lite KV100
443 W · 44.4 V
U8 Lite KV150
399 W · 44.4 V
U8 Lite KV190
346 W · 22.2 V
U8 II KV85
273 W · 44.4 V
U8 II KV100
443 W · 44.4 V
U8 II KV150
399 W · 44.4 V
U8 II KV190
346 W · 22.2 V
MN3520 KV400
1.23 kW · 29.6 V
MN501-S KV240
1.4 kW · 44.4 V
MN501-S KV300
1.13 kW · 29.6 V
MN501-S KV360
1.1 kW · 22.2 V
MN505-S KV320
1.42 kW · 22.2 V
MN505-S KV380
1.37 kW · 22.2 V
U10 II KV100
578 W · 44.4 V
MN801-S KV120
2.44 kW · 44.4 V
MN801-S KV150
3.18 kW · 44.4 V
MN805-S KV120
3.6 kW · 44.4 V
MN805-S KV150
4.16 kW · 44.4 V
MN805-S KV170
4.64 kW · 44.4 V
U15 II KV80
2.4 kW · 88.8 V
U15 II KV100
2.67 kW · 88.8 V
U12 II KV120
1.33 kW · 51.8 V
U12 II KV60
1.45 kW · 92.5 V
U11 II KV120
739 W · 44.4 V
P80III Pin KV100
3.11 kW · 44.4 V
P80III Pin KV120
3.1 kW · 44.4 V
V505 KV260
2.83 kW · 44.4 V
V605 KV210
3.6 kW · 44.4 V
V807 KV170
7.01 kW · 44.4 V
Antigravity MN5006 KV300
524 W · 22.2 V
Antigravity MN5006 KV450
730 W · 22.2 V
Antigravity MN5008 KV170
787 W · 44.4 V
Antigravity MN5008 KV340
847 W · 22.2 V
Antigravity MN5008 KV400
896 W · 22.2 V