Edition 2022 Sep. 16
DC-Micromotors
Precious Metal Commutation 8 W
5,9 mNm
Series 2233 ... S
Values at 22°C and nominal voltage 2233 T 4,5 S 006 S 012 S 018 S 024 S 030 S
1 Nominal voltage U N 4,5 6 12 18 24 30 V
2 Terminal resistance R 1,2 2,7 9,6 25 52 97 Ω
3 Efficiency, max. η max. 86 85 85 83 83 81 %
4 No-load speed n 0 8 500 7 700 8 200 9 000 8 400 8 700 min -1
5 No-load current, typ. (with shaft ? 1,5 mm) I 0 0,02 0,014 0,007 0,005 0,004 0,003 A
6 Stall torque M H 20,2 16 17,3 13,4 12,4 9,9 mNm
7 Friction torque M R 0,1 0,1 0,1 0,1 0,1 0,1 mNm
8 Speed constant k n 1 895 1 296 684 508 354 293 min -1 /V
9 Back-EMF constant k E 0,528 0,772 1,46 1,97 2,82 3,41 mV/min -1
10 Torque constant k M 5,04 7,37 14 18,8 27 32,6 mNm/A
11 Current constant k I 0,198 0,136 0,072 0,053 0,037 0,031 A/mNm
12 Slope of n-M curve Δ n / Δ M 421 483 472 676 678 877 min -1 /mNm
13 Rotor inductance L 60 120 440 800 1 600 2 400 μH
14 Mechanical time constant τ m 11,5 10 11 17 11 12,9 ms
15 Rotor inertia J 2,6 2 2,2 2,5 1,6 1,4 gcm2
16 Angular acceleration α max. 77 80 78 54 78 71 ·10 3 rad/s2
    
17 Thermal resistance R th1 / R th2 4 / 27 K/W
18 Thermal time constant τ w1 / τ w2 4 / 660 s
19 Operating temperature range:
– motor -30 ... +85 (optional version -30 ... +125) °C
– winding, max. permissible +125 °C
20 Shaft bearings sintered bearings ball bearings, preloaded 
21 Shaft load max.: (standard) (optional version) 
– with shaft diameter 1,5 2 mm
– radial at 3 000 min -1 (3 mm from bearing) 1,2 8 N
– axial at 3 000 min -1 0,2 0,8 N
– axial at standstill 20 10 N
22 Shaft play: 
– radial ≤ 0,03 0,015 mm
– axial ≤ 0,2 0 mm
23 Housing material steel, zinc galvanized and passivated
24 Mass 61 g
25 Direction of rotation clockwise, viewed from the front face
26 Speed up to n max. 10 000 min -1
27 Number of pole pairs 1
28 Magnet material AlNiCo
Rated values for continuous operation
29 Rated torque M N 3,4 5 5,9 4,9 4,9 4,3 mNm
30 Rated current (thermal limit) I N 0,7 0,7 0,43 0,27 0,19 0,14 A
31 Rated speed n N 6 930 4 800 4 600 4 830 4 170 3 860 min -1
M [mNm]
n [min -1 ]
1 3 4 2 6 5 0 7 8 9 10
Watt
8 6 4 2
3 000
0
9 000
6 000
12 000
U N
2233T012S
2233T012S (R th2 -50%)
Intermittent operation
Operating point
at nominal value
Recommended operation areas (example: nominal voltage 12V)
Note:
The diagram indicates the recommended