4400 SERIES QUICK LOOK:

  • 126mm OD
  • Inrunner construction
  • Up to 40,000W
  • 10,000 MAX RPM
  • 12 poles / 36 slots

OPTIONS:

  • Finned case
  • Water resistant case built to customer design
  • Stator can be skewed for reduced cogging and acoustic signature
  • May be mated with P62 or P120 gearboxes for very high power-to-weight drives
  • US component sourcing and assembly available

44XX SERIES LENGTHS & POWER RANGES

Neumotors 4400 series brushless motors are manufactured in a wide variety of lengths and winds to provide increasing power ratings at a number of voltages. Select the desired motor power range from the table below.

LENGTH
Continuous
Watts*
Max
Watts*
Physical
Length
Weight
Price*
4,000
8,000
70mm
1,786g
$1,044.00
6,000
12,000
127mm
2,270g
$1,155.00
8,000
16,000
127mm
2,745g
$1,205.00
10,000
20,000
138mm
3,715g
$1,535.00
12,000
24,000
152mm
4,675g
$1,865.00

 Volume discount available.

4410: 4,000-8,000 watt class BLDC motors

Price: $1,044.00 each.  Volume discount available.

Motor RPMs
per Volt
(KV)
Rm (Ohms) Io
@
10V
Torque
Constant
(mNm/A)
Torque
Constant
(inOz/A)
Max
Volts
Max
Amps
4410/3Y/78KV 78 0.054 1.000 122.672 17.372 128 78
4410/2.5Y/94KV 94 0.038 1.200 101.792 14.415 106 94
4410/2Y/119KV 119 0.020 1.500 80.407 11.387 84 119
4410/1.5Y/160KV 160 0.014 2.000 59.803 8.469 63 160
4410/1Y/235KV 235 0.006 3.000 40.717 5.766 43 235
4410/.5Y/470KV 470 0.002 6.000 20.358 2.883 21 470

4415: 6,000-12,000 watt class BLDC motors

Price: $1,155.00 each.  Volume discount available.

Motor RPMs
per Volt
(KV)
Rm (Ohms) Io
@
10V
Torque
Constant
(mNm/A)
Torque
Constant
(inOz/A)
Max
Volts
Max
Amps
4415/3Y/60KV 60 0.064 1.000 159.473 22.583 167 90
4415/2.5Y/72KV 72 0.044 1.200 132.894 18.819 139 108
4415/2Y/83KV 83 0.028 1.500 115.282 16.325 120 125
4415/1.5Y/120KV 120 0.016 2.000 79.737 11.292 83 180
4415/1Y/180KV 180 0.007 3.000 53.158 7.528 56 270
4415/.5Y/360KV 360 0.002 6.000 26.579 3.764 28 540

4420: 8,000-16,000 watt class BLDC motors

Price: $1,205.00 each.  Volume discount available.

Motor RPMs
per Volt
(KV)
Rm (Ohms) Io
@
10V
Torque
Constant
(mNm/A)
Torque
Constant
(inOz/A)
Max
Volts
Max
Amps
4420/3Y/47KV 47 0.090 1.000 203.583 28.83 213 75
4420/2.5Y/55KV 55 0.063 1.200 173.971 24.636 182 88
4420/2Y/62KV 62 0.040 1.500 154.329 21.855 161 99
4420/1.5Y/85KV 85 0.023 2.000 112.569 15.941 118 136
4420/1Y/125KV 125 0.010 3.000 76.547 10.84 80 200
4420/.5Y/235KV 235 0.003 6.000 40.717 5.766 43 376

4430: 10,000-20,000 watt class BLDC motors

Price: $1,535.00 each.  Volume discount available.

Motor RPMs
per Volt
(KV)
Rm (Ohms) Io
@
10V
Torque
Constant
(mNm/A)
Torque
Constant
(inOz/A)
Max
Volts
Max
Amps
4430/3Y/30KV 30 0.117 1.000 318.947 45.167 333 54
4430/2.5Y/38KV 38 0.081 1.200 251.8 35.658 263 68
4430/2Y/46KV 46 0.052 1.500 208.009 29.457 217 83
4430/1.5Y/60KV 60 0.029 2.000 159.473 22.583 167 108
4430/1Y/97KV 97 0.013 3.000 98.643 13.969 103 175
4430/.5Y/195KV 195 0.003 6.000 49.069 6.949 51 351

4440: 12,000-24,000 watt class BLDC motors

Price: $1,865.00 each.  Volume discount available.

Motor RPMs
per Volt
(KV)
Rm (Ohms) Io
@
10V
Torque
Constant
(mNm/A)
Torque
Constant
(inOz/A)
Max
Volts
Max
Amps
4440/3Y/25KV 25 0.144 1.000 382.736 54.2 400 50
4440/2.5Y/29KV 29 0.100 1.200 329.945 46.724 345 58
4440/2Y/34KV 34 0.064 1.500 281.424 39.853 294 68
4440/1.5Y/50KV 50 0.036 2.000 191.368 27.1 200 100
4440/1Y/70KV 70 0.060 1.800 136.691 19.357 143 140
4440/.5Y/140KV 140 0.004 6.000 68.346 9.679 71 280

LEAD TIME

Neutronics assembles motors to order.  Most motors in this series are ready to ship from our San Diego office within 3-6 weeks.  Lead time varies with quantity, customizations, and supply chain considerations.  Rush orders may be available.

Please email us to confirm delivery estimates for your motor needs. info@neutronics.com

MOTOR KV:

The motor sizes and KVs listed above are the most common for this particular motor range. Custom sizes and  KV (RPMs per volt) are usually available.  Please contact us for more details if you don't immediately see the solution you are seeking in the tables above.

KV is the term used in the brushless motor workspace to specify the number of rotations per minute that a motor will turn for each volt applied to the motor/ESC with no load on the motor.

Neutronics specifications are +/- 5%.

For a more complete discussion of KV, please go to our KV FAQ page.  

POWER RATINGS (Watts):

  • Continuous rating is the power the motor can deliver while maintaining the external housing temperatures below 100C.
  • MAX power is achieved at max RPMs and voltage, not at a partial throttle or reduced voltage.
  • MAX power rating is the power the motor can deliver beginning with motor at a temp of 20C until it reaches it's limit temperature of 100C.
  • The ratings are therefore dependent on a number of variables including air flow, ambient air temperature, contact cooling etc. Each application will present different variables.  

MTBF RATINGS:

When used within the constraints described above, BLDC motors' primary "wear" item(s) are the bearings supporting the shaft. Bearing life is inversely affected by speed, temperature, and radial and axial loads.  While an MTBF figure can be generated, it would be rendered invalid by excursions beyond prescribed temperatures or load limits - such as prop strikes, or side loads.  MTBF must be determined on a case by case basis, and even then, it would be subject to numerous exceptions.

MAX VOLTAGE

Limited by kv (RPMs per volt) times the applied voltage.  Max voltage must be kept below the voltage which will spin the motor over max rpm for the motor series.

MAX AMPERAGE

See power ratings above.

COMPONENT SPECIFICATIONS

  • Winding temperature:  -- 180C
  • Magnet grade: - 180C UH grade
  • Bearings:  Japanese SPB bearings

CONTROLLER SETTINGS: TIMING

  • APD controllers automatically adjust timing for optimum efficiency
  • Recommend low timing for controllers that require configuration

Pole Count vs. Pole Pairs

  • Neumotors lists the number of poles in a motor rotor. Example: N S N S would be a four pole motor.
  • Some ESC manufacturers use the term "pole pairs" which refers to the number of N and S pairs.  Example: N S N S would be a 2 pole pair motor.