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Graupner COMPACT 555   20 V   for 19,2 - 24 V Ref. N°. 7716
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Product information
GRAUPNER COMPACT BRUSHLESS motors.
A range of high-performance BRUSHLESS motors. The impressive feature of this series of power plants is their enormously high torque, and it is in direct-drive applications that they show their full power potential. GRAUPNER COMPACT motors are brushless external-rotor (out-runner) types, i.e. the outer motor jacket rotates and drives the motor shaft. This design principle results in ultra-compact electric motors capable of an outstanding performance without recourse to a gearbox. An additional advantage: the weight of GRAUPNER COMPACT motors is very low compared to that of conventional motors.
Recommended accessories
Spinner No. 6045.6 and Propeller 1336.36.24 @ 19.2 ... 24V
Propeller adaptor 7690.7
Motor mount*** 7690.6
All-up weight approx. 3000 g
Recommended speed controller Compact Control 80 2892 or Genius 70 2897
Specification
Nominal voltage 20 V
Operating voltage range 19.2 ... 24 V
No-load speed 10,200
Revs. / Volt 510
No. of winds 18
Current drain at max. efficiency* 15 ... 40 A
Maximum efficiency 88%
Permissible direction of rotation R and L
No. of poles 14
Overall length approx. 74.5 mm
Case length, excl. shaft 55.5 mm
Diameter approx. 49.8 mm
Free shaft length approx. 19 mm
Shaft diameter 6 mm
Weight approx. 320 g


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