EC 45 flat Ø42.8 mm, brushless, 12 Watt, sensorless

Part number 339277

EC 45 flat Ø42.8 mm, brushless, 12 Watt, sensorless
Price scales Quantity Price per unit
Prices excluding VAT and shipping costs 1-4 $79.00
5-19 $69.00
20-49 $57.63
from 50 On request


Technical illustrations

Information: Drawings are not to scale.

Values at nominal voltage
Nominal voltage 12 V
No load speed 8150 rpm
No load current 115 mA
Nominal speed 4720 rpm
Nominal torque (max. continuous torque) 20 mNm
Nominal current (max. continuous current) 1.37 A
Stall torque 66.5 mNm
Stall current 4.92 A
Max. efficiency 72 %
Terminal resistance 2.44 Ω
Terminal inductance 0.541 mH
Torque constant 13.5 mNm/A
Speed constant 706 rpm/V
Speed / torque gradient 128 rpm/mNm
Mechanical time constant 69.8 ms
Rotor inertia 52.3 gcm²
Thermal data
Thermal resistance housing-ambient 6.64 K/W
Thermal resistance winding-housing 5.57 K/W
Thermal time constant winding 6.11 s
Thermal time constant motor 189 s
Ambient temperature -40...+100 °C
Max. winding temperature +125 °C
Mechanical data
Bearing type ball bearings
Max. speed 10000 rpm
Axial play 0 mm, at radial load < 5 N
0.6 mm, at radial load > 5 N
Max. axial load (dynamic) 4.8 N
Max. force for press fits (static) 45 N
(static, shaft supported) 1000 N
Max. radial load 12.5 N, 15 mm from flange
Other specifications
Number of pole pairs 8
Number of phases 3
Number of autoclave cycles 0
Weight 57 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.