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1. Scope:
The document defines the standard specifications and test Conditions for the DC micro motor model RF-300CA-11400
which is to be delivered by HUACHUANGSHENG CO.,LTD.
2.Standard Operating Conditions :
Item NO |
Items |
Specifications |
2 1 |
Rated voltage |
3.0V / DC3.0V between motor terminals |
2 2 |
Operating Voltage Range |
DC 1.5 V ~4.0 V between motor terminals |
2 3 |
Rated Load |
5.0g-cm (by pulley load) |
2 4 |
Rotating Direction |
Direction CW & CCW when viewed from output shaft side. |
2 5 |
Operating Temperature Range |
At normal humidity. |
2 6 |
Storage Temperature Range |
At normal humidity. |
2 7 |
Operating Position |
output shaft all direction |
3. Test Conditions:
Item NO |
Items |
Test Conditions |
3 1 |
Operating Position |
When inspected ,the shaft is horizontal . |
3 2 |
Power Source |
Regulated DC power supply which assures unquestionable measurement. |
3 3 |
Temperature & humidity |
In standard test, measurement is to be made at +10℃ ~ +30℃ and relative humidity 45%~85%RH. If the judgment is questionable, the measurement is to be made based on JIS standard testing condition(+18℃ ~ +22℃,60 ~ 70%RH) |
3 4 |
Rotating Direction |
CW when viewed from output shaft side. |
3 5 |
Dimension |
Refer to construction drawing. |
4. Electrical Characteristics:
Item NO |
Items |
Test conditions |
Specifications |
4 1 |
Rated Load Speed |
At rated voltage and rated load |
3700±370r/min |
4 2 |
Rated Load Current |
At rated voltage and rated load |
100mA max. |
4 3 |
No load Speed |
At rated voltage and no load |
3900±390r/min |
4 4 |
No load Current |
At rated voltage and no load |
35mA max |
4 5 |
Starting Torque |
At rated voltage and two different load, 0g-cm and 4g-cm |
15 g-cm (min.) |
4 6 |
Starting Voltage |
Under no load |
1.0 V (max.) |
4 7 |
Insulation Resistance |
Measured between terminal and frame with 250V DC megger. |
10.0 MΩ(min.) |
4 8 |
Starting Current |
At rated voltage, rotor position to be 2/3R.(R means the resistance in one pole) |
330mA max. |
4 9 |
Electrical Noise |
|
To be equipped with
varistor |
4 10 |
Reference Characteristic Curve |
|
See attached drawing |
5.Mechanical & Functional Characteristics:
Item NO |
Items |
Test conditions |
Specifications |
5 1 |
External Appearance |
Visual |
Appropriate for usage. |
5 2 |
Shaft end play |
Measured by dial gauge. |
0.05 ~ 0.35 mm |
5 3 |
Shaft T.I.R |
5mm from mounting surface by dial gauge. |
Less than 0.03 mm. |
5 4 |
Weight |
Measured by scale. |
Approx. 20g |
5 5 |
Mechanical noise |
35 dB (max.) No load, rated voltage, with motor to be set and measured as below. Background noise:35 dB max.
|
45dB max.
JIS-A(RMS) |
5 6 |
Maximum Axial Load |
Direction of static load and support of
load as shown below.
|
10 Kg max |
6 Life Test
Item NO |
Items |
Test conditions |
Specifications |
6 1 |
Life test |
1. DC3.0V,5gf-cm
2. Environment:25℃±5℃/65%±20%RH
3. Duty Cycle: As sketched below
4. Life Expectancy:500hours(min.) |
1.Rated load speed varies more than ±30% from the initial .
2.Rated load current varies more than ±30% from the initial .
3.Motor gets apparently recognized to be unusable. |
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