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*
300
600
900
1,200
1,500
1,800
2,100
2,500
3,000
3,500
Max
Watts*
600
1,200
1,800
2,400
3,000
3,600
4,200
5,000
6,000
7,000
Physical
Length
(no fan)
39mm
44.65mm
51mm
57.5mm
64mm
70.2mm
82.9mm
82.9mm
93mm
108.5mm
No Fan /
FINNED
57.5mm
57.5mm
57.5mm
57.5mm
72.2mm
72.2mm
78.5mm
85.5mm
100.5mm
FAN /
FINNED
57.5mm
57.5mm
57.5mm
72.2mm
72.2mm
78.5mm
85.5mm
90.5mm
100.5mm
Weight
124.5g
181g
235g
283g
340g
396g
453g
510g
623g
792g

See the tables below for kv and torque particulars.

1902: 300-600 watt class BLDC motors

1905: 600-1,200 watt class BLDC motors

1907: 900-1,800 watt class BLDC motors

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

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

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

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

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

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

1930: 3,500-7,000 watt class BLDC motors

 

MOTOR SELECTION:

The motor sizes and kVs listed above are the most common for this particular motor range. Custom sizes and RPMS are usually available.  Please contact us for more details if you don't immediately see the solution you are seeking in the tables above.

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.

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