Details

RE-max 21 Ø21 mm, Graphite Brushes, 6 Watt, with terminals

Part number 250022

RE-max 21 Ø21 mm, Graphite Brushes, 6 Watt, with terminals

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Specifications

Technical illustrations

Information: Drawings are not to scale.

Values at nominal voltage
Nominal voltage 9 V
No load speed 9880 rpm
No load current 56.9 mA
Nominal speed 8230 rpm
Nominal torque (max. continuous torque) 5.69 mNm
Nominal current (max. continuous current) 0.72 A
Stall torque 34.8 mNm
Stall current 4.07 A
Max. efficiency 78 %
Characteristics
Terminal resistance 2.21 Ω
Terminal inductance 0.0848 mH
Torque constant 8.55 mNm/A
Speed constant 1120 rpm/V
Speed / torque gradient 289 rpm/mNm
Mechanical time constant 6.59 ms
Rotor inertia 2.18 gcm²
Thermal data
Thermal resistance housing-ambient 28 K/W
Thermal resistance winding-housing 8 K/W
Thermal time constant winding 8.83 s
Thermal time constant motor 502 s
Ambient temperature -30...+85 °C
Max. winding temperature +125 °C
Mechanical data
Bearing type sleeve bearing
Max. speed 12000 rpm
Axial play 0.05 - 0.15 mm
Radial play 0.012 mm
Max. axial load (dynamic) 1 N
Max. force for press fits (static) 80 N
(static, shaft supported) 420 N
Max. radial load 2.7 N, 5 mm from flange
Other specifications
Number of pole pairs 1
Number of commutator segments 9
Number of autoclave cycles 0
Product
Weight 42 g
  • Operating Range

    Continuous operation range
   
     
    Short term operation range
   

Description

maxon DC motors are high-quality motors equipped with powerful permanent magnets. The centerpiece of the motor is the globally patented ironless rotor. Our precious metal brushed combination ensures a high level of consistency of the low contact resistance, even after a long standstill. The motors operate with small startup voltages and extremely low levels of electrical interference.

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