EC 45 flat Ø42.8 mm, brushless, 70 Watt, with Hall sensors

Part number 397172

EC 45 flat Ø42.8 mm, brushless, 70 Watt, with Hall sensors
Price scales Quantity Price per unit
Prices excluding VAT and shipping costs 1-4 €159.15
5-19 €140.42
20-49 €118.42
from 50 On request

NRND (Not Recommended for New Designs): These products continue to be available, but are not recommended for new projects. Our sales team will be happy to suggest alternatives.


Technical illustrations

Information: Drawings are not to scale.

Values at nominal voltage
Nominal voltage 24 V
No load speed 6110 rpm
No load current 234 mA
Nominal speed 4860 rpm
Nominal torque (max. continuous torque) 128 mNm
Nominal current (max. continuous current) 3.21 A
Stall torque 1460 mNm
Stall current 39.5 A
Max. efficiency 85 %
Terminal resistance 0.608 Ω
Terminal inductance 0.463 mH
Torque constant 36.9 mNm/A
Speed constant 259 rpm/V
Speed / torque gradient 4.26 rpm/mNm
Mechanical time constant 8.07 ms
Rotor inertia 181 gcm²
Thermal data
Thermal resistance housing-ambient 3.56 K/W
Thermal resistance winding-housing 4.1 K/W
Thermal time constant winding 29.6 s
Thermal time constant motor 178 s
Ambient temperature -40...+100 °C
Max. winding temperature +125 °C
Mechanical data
Bearing type ball bearings
Max. speed 10000 rpm
Axial play {0} {1}, at radial load {2} {3} {4}
0.14 mm, at radial load > 4 N
Max. axial load (dynamic) 3.8 N
Max. force for press fits (static) 50 N
(static, shaft supported) 1000 N
Max. radial load 21 N, 5 mm from flange
Other specifications
Number of pole pairs 8
Number of phases 3
Number of autoclave cycles 0
Weight 141 g


Thanks to their flat design, the brushless EC flat motors are exactly the right drive for many applications. The well-conceived, simple engineering allows mainly automated production which results in a favorable price.