Details
NRND

EC 20 flat Ø20 mm, brushless, 3 Watt, sensorless

Part number 339258

EC 20 flat Ø20 mm, brushless, 3 Watt, sensorless
Price scales Quantity Price per unit
Prices excluding VAT and shipping costs 1-4 €69.26
5-19 €61.05
20-49 €51.58
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.

Specifications

Technical illustrations

Information: Drawings are not to scale.

Values at nominal voltage
Nominal voltage 24 V
No load speed 9120 rpm
No load current 21.1 mA
Nominal speed 3850 rpm
Nominal torque (max. continuous torque) 3.56 mNm
Nominal current (max. continuous current) 0.162 A
Stall torque 7.12 mNm
Stall current 0.309 A
Max. efficiency 55 %
Characteristics
Terminal resistance 77.7 Ω
Terminal inductance 9.8 mH
Torque constant 23 mNm/A
Speed constant 414 rpm/V
Speed / torque gradient 1400 rpm/mNm
Mechanical time constant 56.2 ms
Rotor inertia 3.84 gcm²
Thermal data
Thermal resistance housing-ambient 19.5 K/W
Thermal resistance winding-housing 8.48 K/W
Thermal time constant winding 3.36 s
Thermal time constant motor 32.4 s
Ambient temperature -40...+100 °C
Max. winding temperature +125 °C
Mechanical data
Bearing type ball bearings
Max. speed 15000 rpm
Axial play 0 mm, at radial load < 2 N
0.14 mm, at radial load > 2 N
Max. axial load (dynamic) 1.8 N
Max. force for press fits (static) 18 N
(static, shaft supported) 200 N
Max. radial load 1.9 N, 5 mm from flange
Other specifications
Number of pole pairs 4
Number of phases 3
Number of autoclave cycles 0
Product
Weight 15 g

Description

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.

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