EC frameless 45 flat, brushless, 70 W

Part number 548270

EC frameless 45 flat, brushless, 70 W

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Technical illustrations

Information: Drawings are not to scale.

Values at nominal voltage
Nominal voltage 24 V
No load speed 6100 rpm
No load current 234 mA
Nominal speed 4780 rpm
Nominal torque (max. continuous torque) 128 mNm
Nominal current (max. continuous current) 3.22 A
Stall torque 1270 mNm
Stall current 34.3 A
Max. efficiency 84 %
Terminal resistance 0.7 Ω
Terminal inductance 0.463 mH
Torque constant 36.9 mNm/A
Speed constant 259 rpm/V
Speed / torque gradient 4.9 rpm/mNm
Mechanical time constant 12.3 ms
Rotor inertia 240 gcm²
Thermal data
Thermal resistance housing-ambient 3.59 K/W
Thermal resistance winding-housing 4.09 K/W
Thermal time constant winding 29.5 s
Thermal time constant motor 180 s
Ambient temperature -40...+100 °C
Max. winding temperature +125 °C
Mechanical data
Bearing type keine
Max. speed 10000 rpm
Axial play -1 - -1 mm
Max. axial load (dynamic) 0 N
Max. force for press fits (static) 0 N
(static, shaft supported) 0 N
Max. radial load 0 N, 5 mm from flange
Other specifications
Number of pole pairs 8
Number of phases 3
Number of autoclave cycles 0
Weight 140 g
  • Operating Range

    Continuous operation range
    Short term operation range


The EC frameless motors are BLDC motor kits. Rotor and stator are delivered separately, without bearings and motor shaft, and connected only during assembly. The flat design, the high torques and plenty of space for cable glands allow a high level of integration into your application.