Details

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

Part number 221030

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 15 V
No load speed 5450 rpm
No load current 6.5 mA
Nominal speed 3530 rpm
Nominal torque (max. continuous torque) 6.31 mNm
Nominal current (max. continuous current) 0.248 A
Stall torque 18 mNm
Stall current 0.692 A
Max. efficiency 82 %
Characteristics
Terminal resistance 21.7 Ω
Terminal inductance 0.786 mH
Torque constant 26 mNm/A
Speed constant 367 rpm/V
Speed / torque gradient 305 rpm/mNm
Mechanical time constant 6.69 ms
Rotor inertia 2.09 gcm²
Thermal data
Thermal resistance housing-ambient 28 K/W
Thermal resistance winding-housing 8 K/W
Thermal time constant winding 8.41 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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