RE 25 Ø25 mm, Graphite Brushes, 20 Watt

Part number 339157

RE 25 Ø25 mm, Graphite Brushes, 20 Watt
Price scales Quantity Price per unit
Prices excluding VAT and shipping costs 1-4 $319.88
5-19 $282.25
20-49 $238.13
from 50 On request


Technical illustrations

Information: Drawings are not to scale.

Values at nominal voltage
Nominal voltage 48 V
No load speed 6720 rpm
No load current 9.89 mA
Nominal speed 5530 rpm
Nominal torque (max. continuous torque) 32.9 mNm
Nominal current (max. continuous current) 0.495 A
Stall torque 192 mNm
Stall current 2.84 A
Max. efficiency 88 %
Terminal resistance 16.9 Ω
Terminal inductance 1.97 mH
Torque constant 67.7 mNm/A
Speed constant 141 rpm/V
Speed / torque gradient 35.2 rpm/mNm
Mechanical time constant 5.12 ms
Rotor inertia 13.9 gcm²
Thermal data
Thermal resistance housing-ambient 14.4 K/W
Thermal resistance winding-housing 5.08 K/W
Thermal time constant winding 28 s
Thermal time constant motor 543 s
Ambient temperature -30...+100 °C
Max. winding temperature +155 °C
Mechanical data
Bearing type Waelzlager
Max. speed 14000 rpm
Axial play 0.05 mm, at radial load < 0 N
0.15 mm, at radial load > 0 N
Radial play 0.025 mm
Max. axial load (dynamic) 20 N
Max. force for press fits (static) 60 N
(static, shaft supported) 1000 N
Max. radial load 35 N, 5 mm from flange
Other specifications
Number of pole pairs 1
Number of commutator segments 11
Number of autoclave cycles 0
Weight 115 g
  • Operating Range

    Continuous operation range
    Short term operation range


maxon DC motors are high-quality motors fitted with powerful permanent magnets. The “heart” of the motor is the worldwide patented ironless rotor. For you, this means cutting-edge technology in compact, powerful and low inertia drives.