1 Nominal voltage U N   3 6 9 12 V
2 Terminal resistance R   5,4 21,2 47 101,8 Ω
3 Efficiency, max. η max.   69 69 69 67 %
4 No-load speed n 0   13 250 13 500 13 500 12 600 min -1
5 No-load current, typ. (with shaft ? 1 mm) I 0   0,016 0,0083 0,0057 0,0039 A
6 Stall torque M H   1,15 1,13 1,15 1 mNm
7 Friction torque M R   0,034 0,034 0,035 0,034 mNm
8 Speed constant k n   4 526 2 318 1 543 1 085 min -1 /V
9 Back-EMF constant k E   0,221 0,431 0,648 0,922 mV/min -1
10 Torque constant k M   2,11 4,12 6,19 8,8 mNm/A
11 Current constant k I   0,474 0,243 0,162 0,114 A/mNm
12 Slope of n-M curve Δ n / Δ M   11 475 11 904 11 714 12 553 min -1 /mNm
13 Rotor inductance L   53 217 507 1 033 μH
14 Mechanical time constant τ m   6,1 6,5 6,2 6,5 ms
15 Rotor inertia J   0,051 0,052 0,051 0,049 gcm2
16 Angular acceleration α max.   229 219 227 203 ·10 3 rad/s2
    
17 Thermal resistance R th1 / R th2 20 / 48 K/W
18 Thermal time constant τ w1 / τ w2 4,2 / 242 s
19 Operating temperature range:
– motor -30 ... +85 (optional version -30 ... +125) °C
– winding, max. permissible +85 (optional version +125) °C
20 Shaft bearings sintered bearings 
21 Shaft load max.: 
– with shaft diameter 1 mm
– radial at 3 000 min -1 (1,5 mm from bearing) 0,7 N
– axial at 3 000 min -1 0,1 N
– axial at standstill 20 N
22 Shaft play: 
– radial ≤ 0,02 mm
– axial ≤ 0,2 mm
23 Housing material steel, nickel plated
24 Mass 4,5 g
25 Direction of rotation clockwise, viewed from the front face
26 Speed up to n max. 16 000 min -1
27 Number of pole pairs 1
28 Magnet material NdFeB
Rated values for continuous operation
29 Rated torque M N   0,7 0,69 0,69 0,61 mNm
30 Rated current (thermal limit) I N   0,37 0,19 0,13 0,077 A
31 Rated speed n N   2 540 2 660 2 790 2 500 min -1
0816K003SR
0816K003SR (R th2 -50%)
12 000
M [mNm]
n [min -1 ]
0,1 0,3 0,4 0,2 0,6 0,5 0,7 0,8 0
Watt
1,1 0,8 0,5 0,2
3 000
0
9 000
6 000
15 000
18 000
21 000
U N
Intermittent operation
Operating point
at nominal value
Recommended operation areas (example: nominal voltage 3V)
Note:
The diagram indicates the recommended
speed in relation to the available torque
at the output shaft for a given ambient
temperature of 22°C.
The diagram shows the motor in a