DC Motors

DC motors are the most widely used type of motor with initial costs typically less than AC systems for low-power units. DC motors can be used for a wide range of applications from small tools and appliances, through to electric vehicles, lifts and hoists. DC Motors speed can be controlled by varying the supply voltage and are available in a wide range of voltages, however the most popular type are 12 V and 24 V, with some of the advantages being:

  • Easy installation
  • Speed control over a wide range
  • Quick Starting, Stopping, Reversing and Acceleration
  • High Starting Torque
  • Linear speed-torque curve

Types of DC Motors
There are two common types of DC motor, brushless and brushed. In both brushless and brushed motors, magnets drive the spinning (rotary) motion of the motor shaft.

  • Brushed Motors These are a more traditional type of motor and are typically used in cost-sensitive applications, where control systems are relatively simple, such as in consumer applications and more basic industrial equipment.
  • Brushless Motors Brushless motors alleviate some of the issues associated with brushed motors such as short life span for high use applications and are mechanically much simpler in design (not having brushes). The advantages of brushless motors are longer life, little maintenance and high efficiency (85-90%). These types of motors are generally used in speed and positional control with applications such as fans, pumps and air compressors, where reliability and ruggedness are required.

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Description Price Supply Voltage DC Motor Type Power Rating Output Speed Shaft Diameter Maximum Output Torque Length Width Depth Dimensions Current Rating Core Construction Series Standards Met
RS Stock No. 321-3192
BrandRS Pro
£25.14
Each
Units
12 V dc - 80.16 W 8311 rpm 6.35mm 92.13 mNm 69mm - - 51.8 (Dia.) x 69 mm 10.82 A Iron Core - -
RS Stock No. 238-9721
BrandRS Pro
£4.55
Each
Units
3 → 7.2 V dc - 19.68 W 19000 rpm 2.3mm 375 gcm 38mm - - 27.7 (Dia.) x 38 mm 4.41 A Iron Core - -
RS Stock No. 248-3716
Mfr. Part No.RS380
£8.64
Each
Units
24 V dc Brushed - 6500 rpm 2.3mm 3.5 Ncm 37.8mm - - 27.7 (Dia.) x 37.8 mm - Iron Core - -
RS Stock No. 536-6030
BrandRS Pro
£72.11
Each
Units
24 V dc Brushless - 4000 rpm 5mm 0.75 Nm 100mm 42mm 42mm 100 x 42 x 42 mm 20 A - - -
RS Stock No. 238-9759
BrandRS Pro
£7.11
Each
Units
4.5 → 15 V dc - 21.2 W 13360 rpm 3.18mm 154.4 gcm 50mm - - 35.8 (Dia.) x 50 mm 2.85 A Iron Core - -
RS Stock No. 238-9737
BrandRS Pro
£5.14
Each
Units
6 → 15 V dc - 7.98 W 9869 rpm 2.31mm 78.4 gcm 38mm - - 27.7 (Dia.) x 38 mm 990 mA Iron Core - -
RS Stock No. 238-9709
BrandRS Pro
£2.25
Each
Units
1.5 → 3 V dc - 1.6 W 7800 rpm 2mm 20 gcm 30.5mm - - 23.8 (Dia.) x 30.5 mm 850 mA Iron Core - -
RS Stock No. 238-9715
BrandRS Pro
£4.48
Each
Units
6 → 15 V dc - 5.75 W 10668 rpm 2.31mm 58.8 gcm 32.5mm - - 27.63 (Dia.) x 32.5 mm 770 mA Iron Core - -
RS Stock No. 226-1077
Mfr. Part No.0.130.007.027.850
BrandBosch
£74.05
Each
Units
12 V dc - 28 W 4500 rpm 6mm 6 Ncm 107mm - - 51 (Dia.) x 107 mm 4 A - - -
RS Stock No. 420-4997
Mfr. Part No.200189
BrandMaxon
£62.65
Each
Units
12 V dc Brushless 30 W 4360 rpm 4mm 54.3 mNm 16.4mm - - 42.9 (Dia.) x 16.4 mm 2 A - - -
RS Stock No. 238-9692
BrandRS Pro
£1.75
Each
Units
1.5 → 3 V dc - 1.21 W 8200 → 14000 rpm 2mm 10.4 gcm 38mm - - 21 (Dia.) x 38 mm 960 mA Iron Core - -
RS Stock No. 248-3671
Mfr. Part No.RS555
£10.78
Each
Units
24 V dc Brushed - 3500 rpm - 10 Ncm - - - - - Iron Core - -
RS Stock No. 772-4817
Mfr. Part No.MPM10-0005/CONT
BrandParvalux
£66.09
Each
Units
24 V dc Brushed 60 W 4000 rpm 7.93mm 0.14 Nm 106.7mm - - 86 (Dia.) x 106.7 mm 2.7 A - - -
RS Stock No. 536-6024
BrandRS Pro
£53.24
Each
Units
24 V dc Brushless - 4000 rpm 5mm 0.19 Nm 41mm 42mm 42mm 41 x 42 x 42 mm 5.4 A - - -
RS Stock No. 881-4484
Mfr. Part No.DMN37KA
BrandNidec
£19.77
Each
Units
12 V dc Brushed 9.2 W 3600 rpm 5mm 24.5 mNm 81.2mm 38.4mm - 38.4 (Dia.) x 81.2 mm 1.2 A - DMN37 RoHS
RS Stock No. 420-5192
Mfr. Part No.200142
BrandMaxon
£68.91
Each
Units
12 V dc Brushless 30 W 4370 rpm 4mm 59 mNm 16.4mm - - 42.9 (Dia.) x 16.4 mm 2.14 A - - -
RS Stock No. 536-6046
BrandRS Pro
£86.80
Each
Units
36 V dc Brushless - 4000 rpm 8mm 0.68 Nm 74mm 47mm 48mm 57 (Dia.) x 74 mm 9.8 A Metal 726 -
RS Stock No. 468-4804
Mfr. Part No.148867
BrandMaxon
£327.65
Each
Units
24 V dc Brushed 150 W 7580 rpm 6mm 170 mNm 71mm - - 40 (Dia.) x 71 mm 5.77 A Ironless - -
RS Stock No. 881-4475
Mfr. Part No.DMN29BA
BrandNidec
£9.29
Each
Units
12 V dc Brushed 3 W 3700 rpm 2.5mm 7.8 mNm 54mm 29mm - 29 (Dia.) x 54 mm 420 mA - DMN29 RoHS
RS Stock No. 495-063
Mfr. Part No.251601
BrandMaxon
£107.31
Each
Units
24 V dc Brushless 50 W 6700 rpm 4mm 84.3 mNm 21.3mm - - 42.8 (Dia.) x 21.3 mm 2.36 A - - -
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