2000 SERIES BRUSHLESS INRUNNER MOTORS

Custom environmentally sealed motor with optional fins provides power for production UAV project.

20xx with optional internal cooling fan.

2000 SERIES INRUNNER BLDC MOTORS QUICK LOOK:

High diameter to length bias achieves the high torque advantages of an outrunner with the mounting and operational advantages of a non-rotating enclosure.

  • 51mm OD
  • Inrunner construction
  • 600W to 7,000W depending on length
  • Max rpm – 40k rpm
  • Optimized for 15k-40k rpm
  • 6 poles / 18 slots
  • US component sourcing and assembly available

OPTIONS:

  • 5, 6 or 8mm shafts
  • Finned case
  • Waterproof case
  • Internal fan for better cooling
  • Stator can be skewed for reduced cogging and acoustic signature

May be mated with P42 gearboxes for very high power-to-weight drives.

2000 SERIES LENGTHS & POWER RANGES:

Length
Continuous
Watts*
Max
Watts*
Physical
Length
(no fan)
No Fan /
FINNED
FAN /
FINNED
Weight
Price*
2020
3,500
7,000
93mm
100.5mm
100.5mm
660g

See the tables below for kv and torque particulars.

2020: 3,500-7,000 watt class BLDC motors

Motor RPMs
per Volt
(KV)
Rm (Ohms) Io
@
10V
Torque
Constant
(mNm/A)
Torque
Constant
(inOz/A)
Max
Volts
Max
Amps
2020/6D/233 232 0.084 0.840 41.24 5.84 172 7
2020/5.75D/243 243 0.077 0.877 39.38 5.58 165 13
2020/5.5D/254 254 0.071 0.916 37.67 5.34 157 14
2020/3Y/258 258 0.063 0.933 37.09 5.25 155 22
2020/5.25D/266 266 0.064 0.960 35.97 5.09 150 26
2020/5D/279 279 0.058 1.008 34.30 4.86 143 29
2020/2.75Y/282 282 0.053 1.018 33.93 4.81 142 36
2020/4.75D/294 294 0.053 1.061 32.55 4.61 136 39
2020/4.5D/310 310 0.047 1.120 30.87 4.37 129 43
2020/2.5Y/310 310 0.044 1.120 30.87 4.37 129 50
2020/4.25D/328 328 0.042 1.186 29.17 4.13 122 52
2020/2.25Y/344 344 0.035 1.244 27.82 3.94 116 57
2020/4D/349 349 0.037 1.260 27.42 3.88 115 65
2020/3.75D/372 372 0.033 1.344 25.72 3.64 108 65
2020/2Y/388 388 0.028 1.400 24.66 3.49 103 72
2020/3.5D/399 399 0.029 1.440 23.98 3.40 100 77
2020/3.25D/429 429 0.025 1.551 22.30 3.16 93 79
2020/1.75Y/443 443 0.021 1.600 21.60 3.06 90 86
2020/3D/465 465 0.021 1.680 20.58 2.91 86 90
2020/2.75D/507 507 0.018 1.833 18.87 2.67 79 93
2020/1.5Y/517 517 0.016 1.867 18.51 2.62 77 100
2020/2.5D/558 558 0.015 2.016 17.15 2.43 72 103
2020/2.25D/620 620 0.012 2.240 15.43 2.19 65 108
2020/1.25Y/620 620 0.011 2.240 15.43 2.19 65 115
2020/2D/698 698 0.009 2.520 13.71 1.94 57 116
2020/1Y/775 775 0.007 2.800 12.35 1.75 52 122
2020/1.75D/797 797 0.007 2.880 12.01 1.70 50 129
2020/1.5D/930 930 0.005 3.360 10.29 1.46 43 129
2020/0.75Y/1033 1033 0.004 3.733 9.26 1.31 39 136
2020/1.25D/1116 1116 0.004 4.032 8.57 1.21 36 142
2020/1D/1395 1395 0.002 5.040 6.86 0.97 29 143
2020/0.5Y/1550 1550 0.002 5.600 6.17 0.87 26 151
2020/0.75D/1860 1860 0.001 6.720 5.14 0.73 22 155
2020/0.5D/2790 2790 0.001 10.080 3.43 0.49 14 158
2020/0.25Y/3100 3100 0.000 11.200 3.09 0.44 13 165
2020/0.25D/5580 5580 0.000 20.160 1.72 0.24 7 172

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.