1900 SERIES BRUSHLESS INRUNNER MOTORS

Custom environmentally sealed 19xx series motor with optional fins provides power for production UAV project.

1917 with internal cooling fan.

1900 SERIES 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
  • High speed operation – 35,000 RPM
  • 8 poles / 24 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 P32 gearboxes for very high power-to-weight drives.

1900 SERIES LENGTHS & POWER RANGES:

Length
Continuous
Watts*
Max
Watts*
Physical
Length
(no fan)
No Fan /
FINNED
FAN /
FINNED
Weight
Price*
300
600
39mm
57.5mm
57.5mm
124.5g
$ 186.00 + options
600
1,200
44.65mm
57.5mm
57.5mm
181g
$ 230.00 + options
900
1,800
51mm
57.5mm
57.5mm
235g
$ 274.00 + options
1,200
2,400
57.5mm
57.5mm
72.2mm
283g
$ 329.00 + options
1,500
3,000
64mm
72.2mm
72.2mm
340g
$ 362.00 + options
1,800
3,600
70.2mm
72.2mm
78.5mm
396g
$ 428.00 + options
2,100
4,200
82.9mm
78.5mm
85.5mm
453g
$ 439.00 + options
2,500
5,000
82.9mm
85.5mm
90.5mm
510g
$ 450.00 + options
3,000
6,000
93mm
100.5mm
100.5mm
623g
$ 494.00 + options

1902: 300-600 watt class BLDC motors

Price: $ 186.00 + options 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
1902/3Y/1360 1360 0.020 0.567 7.036 0.996 26 23
1902/2.75Y/1483 1483 0.017 0.618 6.452 0.914 24 25
1902/2.5Y/1632 1632 0.014 0.680 5.863 0.830 21 28
1902/2.25Y/1813 1813 0.011 0.756 5.278 0.747 19 31
1902/2Y/2040 2040 0.009 0.850 4.690 0.664 17 35
1902/1.75Y/2331 2331 0.007 0.971 4.105 0.581 15 40

1905: 600-1,200 watt class BLDC motors

Price: $ 230.00 + options 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
1905/3Y/680 680 0.040 0.567 14.071 1.993 51 23
1905/2.75Y/741 741 0.033 0.618 12.913 1.829 47 25
1905/2.5Y/816 816 0.028 0.680 11.726 1.661 43 28
1905/2.25Y/906 906 0.022 0.756 10.561 1.496 39 31
1905/2Y/1020 1020 0.018 0.850 9.381 1.328 34 35
1905/1.75Y/1165 1165 0.013 0.971 8.213 1.163 30 40
1905/1.5Y/1360 1360 0.010 1.133 7.036 0.996 26 47
1905/1.25Y/1632 1632 0.007 1.360 5.863 0.830 21 56
1905/1Y/2040 2040 0.004 1.700 4.690 0.664 17 70

1907: 900-1,800 watt class BLDC motors

Price: $ 274.00 + options 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
1907/3Y/453 453 0.059 0.567 21.122 2.991 77 23
1907/2.75Y/494 494 0.050 0.618 19.369 2.743 71 25
1907/2.5Y/544 544 0.041 0.680 17.589 2.491 64 28
1907/2.25Y/604 604 0.033 0.756 15.842 2.243 58 31
1907/2Y/680 680 0.026 0.850 14.071 1.993 51 35
1907/1.75Y/777 777 0.020 0.971 12.315 1.744 45 40
1907/1.5Y/906 906 0.015 1.133 10.561 1.496 39 47
1907/1.25Y/1088 1088 0.010 1.360 8.794 1.245 32 56
1907/1Y/1360 1360 0.007 1.700 7.036 0.996 26 70
1907/0.75Y/1813 1813 0.004 2.267 5.278 0.747 19 93
1907/0.5Y/2720 2720 0.002 3.400 3.518 0.498 13 140

1910: 1,200-2,400 watt class BLDC motors

Price: $ 329.00 + options 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
1910/3Y/340 340 0.079 0.567 28.142 3.985 103 23
1910/2.75Y/370 370 0.067 0.618 25.861 3.662 95 25
1910/2.5Y/408 408 0.055 0.680 23.452 3.321 86 28
1910/2.25Y/453 453 0.045 0.756 21.122 2.991 77 31
1910/2Y/510 510 0.035 0.850 18.762 2.657 69 35
1910/1.75Y/582 582 0.027 0.971 16.441 2.328 60 40
1910/1.5Y/680 680 0.020 1.133 14.071 1.993 51 47
1910/1.25Y/816 816 0.014 1.360 11.726 1.661 43 56
1910/1Y/1020 1020 0.009 1.700 9.381 1.328 34 70
1910/0.75Y/1360 1360 0.005 2.267 7.036 0.996 26 93
1910/0.5Y/2040 2040 0.002 3.400 4.690 0.664 17 140

1912: 1,500-3,000 watt class BLDC motors

Price: $ 362.00 + options 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
1912/3Y/272 272 0.099 0.567 35.178 4.982 129 23
1912/2.75Y/296 296 0.083 0.618 32.326 4.578 118 25
1912/2.5Y/326 326 0.069 0.680 29.351 4.156 107 28
1912/2.25Y/362 362 0.056 0.756 26.432 3.743 97 31
1912/2Y/408 408 0.044 0.850 23.452 3.321 86 35
1912/1.75Y/466 466 0.034 0.971 20.533 2.908 75 40
1912/1.5Y/544 544 0.025 1.133 17.589 2.491 64 47
1912/1.25Y/652 652 0.017 1.360 14.675 2.078 54 56
1912/1Y/816 816 0.011 1.700 11.726 1.661 43 70
1912/0.75Y/1088 1088 0.006 2.267 8.794 1.245 32 93
1912/0.5Y/1632 1632 0.003 3.400 5.863 0.830 21 140

1915: 1,800-3,700 watt class BLDC motors

Price: $ 428.00 + options 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
1915/3Y/226 226 0.119 0.567 42.338 5.996 155 23
1915/2.75Y/247 247 0.100 0.618 38.738 5.486 142 25
1915/2.5Y/272 272 0.083 0.680 35.178 4.982 129 28
1915/2.25Y/302 302 0.067 0.756 31.683 4.487 116 31
1915/2Y/340 340 0.053 0.850 28.142 3.985 103 35
1915/1.75Y/388 388 0.040 0.971 24.661 3.492 90 40
1915/1.5Y/453 453 0.030 1.133 21.122 2.991 77 47
1915/1.25Y/544 544 0.021 1.360 17.589 2.491 64 56
1915/1Y/680 680 0.013 1.700 14.071 1.993 51 70
1915/0.75Y/906 906 0.007 2.267 10.561 1.496 39 93
1915/0.5Y/1360 1360 0.003 3.400 7.036 0.996 26 140
1915/0.25Y/2720 2720 0.001 6.800 3.518 0.498 13 280

1917: 2,100-4,200 watt class BLDC motors

Price: $ 439.00 + options 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
1917/3Y/194 194 0.139 0.567 49.322 6.985 180 23
1917/2.75Y/211 211 0.116 0.618 45.348 6.422 166 25
1917/2.5Y/233 233 0.096 0.680 41.066 5.815 150 27
1917/2.25Y/259 259 0.078 0.756 36.944 5.232 135 30
1917/2Y/291 291 0.062 0.850 32.881 4.656 120 34
1917/1.75Y/333 333 0.047 0.971 28.734 4.069 105 39
1917/1.5Y/388 388 0.035 1.133 24.661 3.492 90 45
1917/1.25Y/466 466 0.024 1.360 20.533 2.908 75 55
1917/1Y/582 582 0.015 1.700 16.441 2.328 60 68
1917/0.75Y/777 777 0.009 2.267 12.315 1.744 45 91
1917/0.5Y/1165 1165 0.004 3.400 8.213 1.163 30 136
1917/0.25Y/2331 2331 0.001 6.800 4.105 0.581 15 273

1920: 2,500-5,000 watt class BLDC motors

Price: $ 450.00 + options 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
1920/3Y/170 170 0.158 0.567 56.285 7.971 206 24
1920/2.75Y/185 185 0.133 0.618 51.721 7.324 189 26
1920/2.5Y/204 204 0.110 0.680 46.904 6.642 172 29
1920/2.25Y/226 226 0.089 0.756 42.338 5.996 155 32
1920/2Y/255 255 0.070 0.850 37.523 5.314 137 36
1920/1.75Y/291 291 0.054 0.971 32.881 4.656 120 42
1920/1.5Y/340 340 0.040 1.133 28.142 3.985 103 49
1920/1.25Y/408 408 0.028 1.360 23.452 3.321 86 58
1920/1Y/510 510 0.018 1.700 18.762 2.657 69 73
1920/0.75Y/680 680 0.010 2.267 14.071 1.993 51 97
1920/0.5Y/1020 1020 0.004 3.400 9.381 1.328 34 146
1920/0.25Y/2040 2040 0.001 6.800 4.690 0.664 17 291

1924: 3,000-6,000 watt class BLDC motors

Price: $ 494.00 + options 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
1924/3Y/142 142 0.190 0.567 67.383 9.542 246 24
1924/2.75Y/155 155 0.160 0.618 61.732 8.742 226 27
1924/2.5Y/170 170 0.132 0.680 56.285 7.971 206 29
1924/2.25Y/189 189 0.107 0.756 50.626 7.169 185 32
1924/2Y/213 213 0.084 0.850 44.922 6.362 164 37
1924/1.75Y/243 243 0.065 0.971 39.376 5.576 144 42
1924/1.5Y/283 283 0.048 1.133 33.811 4.788 124 49
1924/1.25Y/340 340 0.033 1.360 28.142 3.985 103 58
1924/1Y/425 425 0.021 1.700 22.514 3.188 82 73
1924/0.75Y/567 567 0.012 2.267 16.875 2.390 62 97
1924/0.5Y/850 850 0.005 3.400 11.257 1.594 41 146
1924/0.25Y/1700 1700 0.001 6.800 5.628 0.797 21 291

19 series options and prices

Option Price Notes
1907 - 15 high cooling $50.00 includes finned case and fan
6 & 8mm shaft for 1912 and larger $15.00 for longer version-5mm standard
P32 gear box 6.7 $175.00 includes adapter plate
P42 gear box 6.7 $295.00 includes adapter plate
Hall sensor board $85.00

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.