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 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. 718-981
Mfr. Part No.22N28-208E.204
BrandPortescap
HK$549.35
Each
units
18 V dc - 3.8 W 6300 rpm 2mm 7 mNm 32mm - - 22 (Dia.) x 32 mm 260 mA Ironless - -
RS Stock No. 122-4624
Mfr. Part No.LT2020A-050K05
BrandPiezoMotor
HK$9,910.50
Each
units
48 V - 10 mW/Hz 0 10 mm/s - 20 (Stall Force) N, 22 (Holding Force) N 22mm 10.8mm 21mm 22 x 10.8 x 21 mm - - Piezo LEGS -
RS Stock No. 351-5189
Mfr. Part No.80030003
BrandCrouzet
HK$1,918.29
Each
units
24 V dc Brushless 35 W 3410 rpm 6mm 85 mNm 73.2mm 57mm 57mm 73.2 x 57 x 57 mm 2.5 A - - -
RS Stock No. 849-6241
Mfr. Part No.162.4101.3B.00
BrandDOGA
HK$1,031.54
Each
units
24 V dc - 63 W 3000 rpm - 0.2 Nm 118.5mm 60 (Dia.)mm - 60 (Dia.) x 118.5 mm 4 A - - -
RS Stock No. 881-4472
Mfr. Part No.DMN37BA
BrandNidec
HK$219.53
Each
units
12 V dc Brushed 7.2 W 4700 rpm 5mm 14.7 mNm 76.2mm 38.4mm - 38.4 (Dia.) x 76.2 mm 1.01 A - DMN37 RoHS
RS Stock No. 262-2135
Mfr. Part No.134384
BrandMaxon
HK$738.74
Each
units
6 V dc Brushed 5 W 6720 rpm - 0.633 Ncm - - - - - Ironless - -
RS Stock No. 122-0030
Mfr. Part No.80280007
BrandCrouzet
HK$4,519.44
Each
units
10 to 36 V Brushless 84 W @ 12 V, 199 W @ 24 V, 251 W @ 32 V 800 rpm @ 12 V, 1900 rpm @ 24 V, 2400 rpm @ 32 V 8mm 1000 mNm 57.2mm 137mm 57.2mm 57.2 x 137 x 57.2 mm 12.5 A @ 32 V, 15 A @ 12 V, 15 A @ 24 V - 80280 TNi21 -
RS Stock No. 495-108
Mfr. Part No.343016
BrandMaxon
HK$9,590.04
Each
units
12 50 V dc Brushless 60 W 12000 rpm - 5.4 Ncm 120mm 33mm 53mm 120 x 33 x 53 mm - - - -
RS Stock No. 752-1964
BrandRS PRO
HK$337.14
Each
units
6 15 V - 7.98 W 112 rpm 6mm 78.4 gcm 73.9mm 32 (Dia.)mm - 32 (Dia.) x 73.9 mm 990 mA Metal - -
RS Stock No. 122-0062
Mfr. Part No.80280001
BrandCrouzet
HK$6,789.82
Each
units
9 to 56 V Brushless 77 W @ 12 V, 235 W @ 24 V, 419 W @ 48 V 740 rpm @ 12 V, 2250 rpm @ 24 V, 4000 rpm @ 48 V 8mm 1000 mNm 57.2mm 167.9mm 57.2mm 57.2 x 136.9 x 57.2 mm 11.5 A @ 48 V, 14 A @ 12 V, 14 A @ 24 V - 80280 SMi21 -
RS Stock No. 323-4903
Mfr. Part No.110124
BrandMaxon
HK$668.21
Each
units
18 V dc Brushed 5 W 9970 rpm 2mm 6.25 mNm 31.9mm - - 22 (Dia.) x 31.9 mm 374 mA Ironless - -
RS Stock No. 881-4484
Mfr. Part No.DMN37KA
BrandNidec
HK$238.87
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. 323-4852
Mfr. Part No.110048
BrandMaxon
HK$591.44
Each
units
21 V dc Brushed 2 W 13700 rpm 1.5mm 2.14 mNm 25.4mm - - 16 (Dia.) x 25.4 mm 153 mA Ironless - -
RS Stock No. 892-9123
Mfr. Part No.22N28-216E.286
BrandPortescap
HK$670.36
Each
units
6 V dc Brushed 4.2 W 5580 rpm 1.5mm 8.4 mNm 45mm 22mm - 22 (Dia.) x 45 mm 7 mA Ironless - -
RS Stock No. 752-1955
BrandRS PRO
HK$291.03
Each
units
4.5 15 V - 11 W 5216 rpm 6mm 206 gcm 89.1mm 37 (Dia.)mm - 37 (Dia.) x 89.1 mm 1.26 A Metal - -
RS Stock No. 192-5966
Mfr. Part No.28L28-219.49
BrandPortescap
HK$1,559.39
Each
units
12 V dc - 11 W 5300 rpm 3mm 19.9 mNm 43.5mm - - 28 (Dia.) x 43.5 mm 950 mA Ironless - -
RS Stock No. 226-1077
Mfr. Part No.0.130.007.027.850
BrandBosch
HK$894.26
Each
units
12 V dc - 28 W 4500 rpm 6mm 6 Ncm 107mm - - 51 (Dia.) x 107 mm 4 A - - -
RS Stock No. 192-5938
Mfr. Part No.16N28-207E.201
BrandPortescap
HK$548.09
Each
units
12 V dc - 2.3 W 10800 rpm 1.5mm 2.4 mNm 28mm - - 16 (Dia.) x 28 mm 240 mA Ironless - -
RS Stock No. 181-7577
Mfr. Part No.B7744E742B5F
BrandMaxon
HK$696.55
Each
units
12 V Brushed 10.4 W 5260 RPM, 7140 RPM 2mm 12.5 mNm 32mm 22mm - 22 Dia. x 32 mm 810 mA - DCX -
RS Stock No. 181-7556
Mfr. Part No.625457
BrandMaxon
HK$3,057.34
Each
units
24 V Brushless 75 W 6870 RPM, 7950 RPM 4mm 107 mNm 64mm 30mm - 30 Dia. x 64 mm 3.64 A - DCX -
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