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Coreless DC Motor
 |
- Model：20SYK2128.A
- Connection：with wires
- Brushes：precious metal brushes
- Bearings：sleeve bearing
- Datasheet：PDF File
Operating parameters（25C）
| Assigned power |
W
|
1.6 |
Max.efficiency |
%
|
78 |
|
| Nominal voltage |
Volt
|
3 |
Limits for continuous operating | Max.continuous current |
mA
|
628 |
| Terminal resistance±10% |
Ohm
|
0.655 |
mNm |
mNm
|
2.09 |
|
| No-Load speed±10% |
rpm
|
8,500 |
Nominal speed |
rpm
|
7,335 |
|
| No-Load current≤125% |
mA
|
60.2 |
Max.continuous power |
W
|
1.60 |
|
| Speed constant |
rpm/V
|
2,833 |
Mechanical time constant |
ms
|
18.1 |
|
| Torque constant |
mNm/A
|
3.33 |
Rotor inetia |
gcm2
|
3.07 |
|
| Starting current |
mA
|
4,580 |
Inductance |
mH
|
|
|
| Stall torque |
mNm
|
15.24 |
Weight |
g
|
39 |
|
Dimensions（mm）
Characteristic curve diagram
Note
| ● | Axial play (measured at 4N axial force) |
|
|
|
|
|
≤0.15mm |
||
| ● | Max. sleeve bearing loads |
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|
|
|
Axial (dynamic) |
|
|
|
|
|
1.0N | ||
|
|
Radial (4 mm from jamming ring) |
|
|
|
|
|
2.7N | ||
|
|
Force for press-fits (static) |
|
|
|
|
|
80N | ||
| ● | Max. radial play sleeve bearing |
|
|
|
|
|
0.02 mm | ||
| ● | Ambient temperature range |
|
|
|
|
|
-20～+65℃ | ||
| ● | Max. rotor temperature |
|
|
|
|
|
+85℃ | ||
| ● | Weight of motor |
|
|
|
|
|
39g | ||
| ● | Options:gearbox and ball bearings |
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