279 maxon EC-i Due to an optimized magnetic circuit, the brushless DC motors with iron windings have a very high torque and very low cogging torque. The robust design with a steel flange and housing offers a wide variety of applications. The “assembled in Korea” label stands for consistently high maxon quality at a competitive price. Summary EC-i motors 40 mm in diameter 281–285 X Drives (configurable) DC Motor EC Motor (BLDC Motor) Gearhead Spindle drive Sensor Motor control Compact Drive Accessories Ceramic
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279
maxon EC-i Due to an optimized magnetic circuit, the brushless DC motors with iron windings have a very high torque and very low cogging torque. The robust design with a steel flange and housing offers a wide variety of applications. The “assembled in Korea” label stands for consistently high maxon quality at a competitive price.
Summary
EC-i motors 40 mm in diameter 281–285
X D
rive
s(c
onfig
urab
le)
DC
Moto
r E
C M
oto
r(B
LDC
Mot
or)
Gearh
ead
Spin
dle
dri
veSenso
r M
oto
r
contr
ol
Com
pact
Dri
veA
ccess
ori
es
Cera
mic
280
Dynamic, high torque, and unbeatable value.
Modular construction with gears, sensors and brakes.
The modular rotor delivers good dynamics and large torques.
The steel housing and flange ensure good heat dissipation and mechanical stability.
Shaft with no groove guarantees torsional stability and smooth running.
The stator with an iron winding is designed for high power at a low cogging torque.
"assembled in Korea": High quality due to process-monitored manufacturing on state-of-the-art assembly lines.
April 2016 edition / subject to change maxon EC motor
Stock programStandard programSpecial program (on request)
Part Numbers
Specifications Operating Range Comments
n [rpm] Continuous operationIn observation of above listed thermal resistance (lines 17 and 18) the maximum permissible wind-ing temperature will be reached during continuous operation at 25°C ambient.= Thermal limit.
Short term operationThe motor may be briefly overloaded (recurring).
Assigned power rating
maxon Modular System Overview on page 20–27
EC-i 40 ∅40 mm, brushless, 50 Watt
Motor DataValues at nominal voltage
1 Nominal voltage V2 No load speed rpm3 No load current mA4 Nominal speed rpm5 Nominal torque (max. continuous torque) mNm6 Nominal current (max. continuous current) A7 Stall torque mNm8 Stall current A9 Max. efficiency %
Characteristics10 Terminal resistance phase to phase W11 Terminal inductance phase to phase mH12 Torque constant mNm/A13 Speed constant rpm/V14 Speed/torque gradient rpm/mNm15 Mechanical time constant ms16 Rotor inertia gcm2
Thermal data 17 Thermal resistance housing-ambient 18 Thermal resistance winding-housing 19 Thermal time constant winding 20 Thermal time constant motor 21 Ambient temperature 22 Max. winding temperature
Mechanical data (preloaded ball bearings)23 Max. speed 15 000 rpm24 Axial play at axial load
25 Radial play preloaded26 Max. axial load (dynamic) 27 Max. force for press fits (static)
(static, shaft supported) 28 Max. radial load, 5 mm from flange
Other specifications29 Number of pole pairs 30 Number of phases 31 Weight of motor
Values listed in the table are nominal.
Connection (Cable AWG 20) red Motor winding 1 Pin 1 black Motor winding 2 Pin 2 white Motor winding 3 Pin 3 N.C. Pin 4 Connector Article number Molex 39-01-2040 Connection (Cable AWG 26) yellow Hall sensor 1 Pin 1 brown Hall sensor 2 Pin 2 grey Hall sensor 3 Pin 3 blue GND Pin 4 green VHall 4.5…24 VDC Pin 5 N.C. Pin 6 Connector Article number Molex 430-25-0600 Wiring diagram for Hall sensors see p. 37
maxon EC motor April 2016 edition / subject to change
Stock programStandard programSpecial program (on request)
Part Numbers
Specifications Operating Range Comments
n [rpm] Continuous operationIn observation of above listed thermal resistance (lines 17 and 18) the maximum permissible wind-ing temperature will be reached during continuous operation at 25°C ambient.= Thermal limit.
Short term operationThe motor may be briefly overloaded (recurring).
1 Nominal voltage V2 No load speed rpm3 No load current mA4 Nominal speed rpm5 Nominal torque (max. continuous torque) mNm6 Nominal current (max. continuous current) A7 Stall torque mNm8 Stall current A9 Max. efficiency %
Characteristics10 Terminal resistance phase to phase W11 Terminal inductance phase to phase mH12 Torque constant mNm/A13 Speed constant rpm/V14 Speed/torque gradient rpm/mNm15 Mechanical time constant ms16 Rotor inertia gcm2
Thermal data 17 Thermal resistance housing-ambient 18 Thermal resistance winding-housing 19 Thermal time constant winding 20 Thermal time constant motor 21 Ambient temperature 22 Max. winding temperature
Mechanical data (preloaded ball bearings)23 Max. speed 10 000 rpm24 Axial play at axial load
25 Radial play preloaded26 Max. axial load (dynamic) 27 Max. force for press fits (static)
(static, shaft supported) 28 Max. radial load, 5 mm from flange
Other specifications29 Number of pole pairs 30 Number of phases 31 Weight of motor
Values listed in the table are nominal.
Connection (Cable AWG 20) red Motor winding 1 Pin 1 black Motor winding 2 Pin 2 white Motor winding 3 Pin 3 N.C. Pin 4 Connector Article number Molex 39-01-2040 Connection (Cable AWG 26) yellow Hall sensor 1 Pin 1 brown Hall sensor 2 Pin 2 grey Hall sensor 3 Pin 3 blue GND Pin 4 green VHall 4.5…24 VDC Pin 5 N.C. Pin 6 Connector Article number Molex 430-25-0600 Wiring diagram for Hall sensors see p. 37
April 2016 edition / subject to change maxon EC motor
Stock programStandard programSpecial program (on request)
Part Numbers
Specifications Operating Range Comments
n [rpm] Continuous operationIn observation of above listed thermal resistance (lines 17 and 18) the maximum permissible wind-ing temperature will be reached during continuous operation at 25°C ambient.= Thermal limit.
Short term operationThe motor may be briefly overloaded (recurring).
Assigned power rating
maxon Modular System Overview on page 20–27
EC-i 40 ∅40 mm, brushless, 70 Watt
Motor DataValues at nominal voltage
1 Nominal voltage V2 No load speed rpm3 No load current mA4 Nominal speed rpm5 Nominal torque (max. continuous torque) mNm6 Nominal current (max. continuous current) A7 Stall torque mNm8 Stall current A9 Max. efficiency %
Characteristics10 Terminal resistance phase to phase W11 Terminal inductance phase to phase mH12 Torque constant mNm/A13 Speed constant rpm/V14 Speed/torque gradient rpm/mNm15 Mechanical time constant ms16 Rotor inertia gcm2
Thermal data 17 Thermal resistance housing-ambient 18 Thermal resistance winding-housing 19 Thermal time constant winding 20 Thermal time constant motor 21 Ambient temperature 22 Max. winding temperature
Mechanical data (preloaded ball bearings)23 Max. speed 15 000 rpm24 Axial play at axial load
25 Radial play preloaded26 Max. axial load (dynamic) 27 Max. force for press fits (static)
(static, shaft supported) 28 Max. radial load, 5 mm from flange
Other specifications29 Number of pole pairs 30 Number of phases 31 Weight of motor
Values listed in the table are nominal.
Connection (Cable AWG 20) red Motor winding 1 Pin 1 black Motor winding 2 Pin 2 white Motor winding 3 Pin 3 N.C. Pin 4 Connector Article number Molex 39-01-2040 Connection (Cable AWG 26) yellow Hall sensor 1 Pin 1 brown Hall sensor 2 Pin 2 grey Hall sensor 3 Pin 3 blue GND Pin 4 green VHall 4.5…24 VDC Pin 5 N.C. Pin 6 Connector Article number Molex 430-25-0600 Wiring diagram for Hall sensors see p. 37
maxon EC motor April 2016 edition / subject to change
Stock programStandard programSpecial program (on request)
Part Numbers
Specifications Operating Range Comments
n [rpm] Continuous operationIn observation of above listed thermal resistance (lines 17 and 18) the maximum permissible wind-ing temperature will be reached during continuous operation at 25°C ambient.= Thermal limit.
Short term operationThe motor may be briefly overloaded (recurring).
Assigned power rating
maxon Modular System Overview on page 20–27
EC-i 40 ∅40 mm, brushless, 70 WattHigh Torque
Motor DataValues at nominal voltage
1 Nominal voltage V2 No load speed rpm3 No load current mA4 Nominal speed rpm5 Nominal torque (max. continuous torque) mNm6 Nominal current (max. continuous current) A7 Stall torque mNm8 Stall current A9 Max. efficiency %
Characteristics10 Terminal resistance phase to phase W11 Terminal inductance phase to phase mH12 Torque constant mNm/A13 Speed constant rpm/V14 Speed/torque gradient rpm/mNm15 Mechanical time constant ms16 Rotor inertia gcm2
Thermal data 17 Thermal resistance housing-ambient 18 Thermal resistance winding-housing 19 Thermal time constant winding 20 Thermal time constant motor 21 Ambient temperature 22 Max. winding temperature
Mechanical data (preloaded ball bearings)23 Max. speed 10 000 rpm24 Axial play at axial load
25 Radial play preloaded26 Max. axial load (dynamic) 27 Max. force for press fits (static)
(static, shaft supported) 28 Max. radial load, 5 mm from flange
Other specifications29 Number of pole pairs 30 Number of phases 31 Weight of motor
Values listed in the table are nominal.
Connection (Cable AWG 20) red Motor winding 1 Pin 1 black Motor winding 2 Pin 2 white Motor winding 3 Pin 3 N.C. Pin 4 Connector Article number Molex 39-01-2040 Connection (Cable AWG 26) yellow Hall sensor 1 Pin 1 brown Hall sensor 2 Pin 2 grey Hall sensor 3 Pin 3 blue GND Pin 4 green VHall 4.5…24 VDC Pin 5 N.C. Pin 6 Connector Article number Molex 430-25-0600 Wiring diagram for Hall sensors see p. 37
April 2016 edition / subject to change maxon EC motor
Stock programStandard programSpecial program (on request)
Part Numbers
Specifications Operating Range Comments
n [rpm] Continuous operationIn observation of above listed thermal resistance (lines 17 and 18) the maximum permissible wind-ing temperature will be reached during continuous operation at 25°C ambient.= Thermal limit.
Short term operationThe motor may be briefly overloaded (recurring).
Assigned power rating
maxon Modular System Overview on page 20–27
EC-i 40 ∅40 mm, brushless, 100 WattHigh Torque
Motor DataValues at nominal voltage
1 Nominal voltage V2 No load speed rpm3 No load current mA4 Nominal speed rpm5 Nominal torque (max. continuous torque) mNm6 Nominal current (max. continuous current) A7 Stall torque mNm8 Stall current A9 Max. efficiency %
Characteristics10 Terminal resistance phase to phase W11 Terminal inductance phase to phase mH12 Torque constant mNm/A13 Speed constant rpm/V14 Speed/torque gradient rpm/mNm15 Mechanical time constant ms16 Rotor inertia gcm2
Thermal data 17 Thermal resistance housing-ambient 18 Thermal resistance winding-housing 19 Thermal time constant winding 20 Thermal time constant motor 21 Ambient temperature 22 Max. winding temperature
Mechanical data (preloaded ball bearings)23 Max. speed 8000 rpm24 Axial play at axial load
25 Radial play preloaded26 Max. axial load (dynamic) 27 Max. force for press fits (static)
(static, shaft supported) 28 Max. radial load, 5 mm from flange
Other specifications29 Number of pole pairs 30 Number of phases 31 Weight of motor
Values listed in the table are nominal.
Connection (Cable AWG 20) red Motor winding 1 Pin 1 black Motor winding 2 Pin 2 white Motor winding 3 Pin 3 N.C. Pin 4 Connector Article number Molex 39-01-2040 Connection (Cable AWG 26) yellow Hall sensor 1 Pin 1 brown Hall sensor 2 Pin 2 grey Hall sensor 3 Pin 3 blue GND Pin 4 green VHall 4.5…24 VDC Pin 5 N.C. Pin 6 Connector Article number Molex 430-25-0600 Wiring diagram for Hall sensors see p. 37
maxon EC motor April 2016 edition / subject to change
Stock programStandard programSpecial program (on request)
Part Numbers
Specifications Operating Range Comments
n [rpm] Continuous operationIn observation of above listed thermal resistance (lines 17 and 18) the maximum permissible wind-ing temperature will be reached during continuous operation at 25°C ambient.= Thermal limit.
Short term operationThe motor may be briefly overloaded (recurring).
Assigned power rating
maxon Modular System Overview on page 20–27
EC-i 52 ∅52 mm, brushless, 180 WattHigh Torque
Motor Data (provisional)Values at nominal voltage
1 Nominal voltage V2 No load speed rpm3 No load current mA4 Nominal speed rpm5 Nominal torque (max. continuous torque) mNm6 Nominal current (max. continuous current) A7 Stall torque mNm8 Stall current A9 Max. efficiency %
Characteristics10 Terminal resistance phase to phase W11 Terminal inductance phase to phase mH12 Torque constant mNm/A13 Speed constant rpm/V14 Speed/torque gradient rpm/mNm15 Mechanical time constant ms16 Rotor inertia gcm2
Thermal data 17 Thermal resistance housing-ambient 18 Thermal resistance winding-housing 19 Thermal time constant winding 20 Thermal time constant motor 21 Ambient temperature 22 Max. winding temperature
Mechanical data (preloaded ball bearings)23 Max. speed 6000 rpm24 Axial play at axial load
25 Radial play preloaded26 Max. axial load (dynamic) 27 Max. force for press fits (static)
(static, shaft supported) 28 Max. radial load, 15 mm from flange
Other specifications29 Number of pole pairs 30 Number of phases 31 Weight of motor
Values listed in the table are nominal.
Connection (Cable AWG 16) red Motor winding 1 Pin 1 black Motor winding 2 Pin 2 white Motor winding 3 Pin 3 N.C. Pin 4 Connector Article number Molex 39-01-2040 Connection (Cable AWG 26) yellow Hall sensor 1 Pin 1 brown Hall sensor 2 Pin 2 grey Hall sensor 3 Pin 3 blue GND Pin 4 green VHall 4.5…24 VDC Pin 5 N.C. Pin 6 Connector Article number Molex 430-25-0600 Wiring diagram for Hall sensors see p. 37