Details

RE-max 21 Ø21 mm, Precious Metal Brushes CLL, 3.5 Watt, with terminals

Part number 221023

RE-max 21 Ø21 mm, Precious Metal Brushes CLL, 3.5 Watt, with terminals

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Specifications

Technical illustrations

Information: Drawings are not to scale.

Values at nominal voltage
Nominal voltage 3.6 V
No load speed 5720 rpm
No load current 29.1 mA
Nominal speed 4170 rpm
Nominal torque (max. continuous torque) 4.85 mNm
Nominal current (max. continuous current) 0.84 A
Stall torque 18 mNm
Stall current 3.02 A
Max. efficiency 82 %
Characteristics
Terminal resistance 1.19 Ω
Terminal inductance 0.0411 mH
Torque constant 5.95 mNm/A
Speed constant 1600 rpm/V
Speed / torque gradient 322 rpm/mNm
Mechanical time constant 6.99 ms
Rotor inertia 2.08 gcm²
Thermal data
Thermal resistance housing-ambient 28 K/W
Thermal resistance winding-housing 8 K/W
Thermal time constant winding 8.34 s
Thermal time constant motor 501 s
Ambient temperature -30...+65 °C
Max. winding temperature +85 °C
Mechanical data
Bearing type sleeve bearing
Max. speed 10000 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 43 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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