16 Angular acceleration α max. 152 147 152 150 157 152 ·10 3 rad/s2
    
17 Thermal resistance R th1 / R th2 8 / 17 K/W
18 Thermal time constant τ w1 / τ w2 13 / 500 s
19 Operating temperature range:
– motor -30 ... +100 °C
– winding, max. permissible +125 °C
20 Shaft bearings sintered bearings ball bearings, preloaded 
21 Shaft load max.: (standard) (optional version) 
– with shaft diameter 3 3 mm
– radial at 3 000 min -1 (3 mm from bearing) 2,5 15 N
– axial at 3 000 min -1 0,3 2 N
– axial at standstill 20 20 N
22 Shaft play: 
– radial ≤ 0,03 0,015 mm
– axial ≤ 0,15 0 mm
23 Housing material steel, zinc galvanized and passivated
24 Mass 68 g
25 Direction of rotation clockwise, viewed from the front face
26 Speed up to n max. 8 000 min -1
27 Number of pole pairs 1
28 Magnet material NdFeB
Rated values for continuous operation
29 Rated torque M N 11 12 12 12 12 12 mNm
30 Rated current (thermal limit) I N 1,9 0,9 0,61 0,46 0,31 0,23 A
31 Rated speed n N 4 750 4 450 4 700 4 560 4 880 4 630 min -1
M [mNm]
n [min -1 ]
2 6 8 4 12 10 0 14 16
Watt
11 8 5 2
3 000
0
9 000
6 000
2 000
8 000
10 000
5 000
1 000
7 000
4 000
U N
2237S024CXR
2237S024CXR (R th2 -50%)
Recommended operation areas (example: nominal voltage 24V)
Intermittent operation
Operating point
at nominal value
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
compleby insulated as well as thermally
coupled condition (R th2 50% reduced).
The nominal voltage (U N ) curve shows
the operating point at nominal voltage
in the insulated and thermally coupled
condition. Any points of operation above
the curve at nominal voltage will require
a higher operating voltage. Any points
below the nominal voltage curve will
require less voltage.
Note: Rated values are calculated with nominal voltage and at a 22°C ambient temperature. The R th2 value has been reduced by 25%.
For notes on technical data and lifetime perbance