Basic Info.
Model NO.
7B720
Power Source
DC Motor
Function
Control, Driving
Casing Protection
Closed Type
Structure
Combined
Certification
ISO9001
Diameter
7mm
Length of Motor Body
20mm
Transport Package
Standard Export Carton
Specification
7mm x L20
Trademark
CHUNGFO
Origin
China
HS Code
8501109990
Production Capacity
4 Million PCS/Month
Product Description
| 7B Series φ7mm x L20 Precious Metal Brushes |
| Motor Paramter | Motor Model | |||||||||||
| Values at nominal voltage | 7B1NA- 013021 | 7B2NA- 024091 | ||||||||||
| 1 | Rated voltage | V | 3.0 | 3.7 | ||||||||
| Free Load | 2 | No load speed | rpm | 31730 | 42870 | |||||||
| 3 | No load current | mA | 28 | 104 | ||||||||
| At Max. Efficiency | 4 | Max. efficiency | % | 78.61% | 72.72% | |||||||
| 5 | Speed | rpm | 28499 | 37351 | ||||||||
| 6 | Current | mA | 249 | 701 | ||||||||
| 7 | Torque | g.cm | 2.48 | 3.99 | ||||||||
| At Max. Output | 8 | Max. output | W | 1.98 | 3.41 | |||||||
| 9 | Speed | rpm | 15865 | 21435 | ||||||||
| 10 | Current | mA | 1115 | 2424 | ||||||||
| 11 | Torque | g.cm | 12.19 | 15.5 | ||||||||
| At Stall | 12 | Stall current | A | 2.2 | 4.7 | |||||||
| 13 | Stall torque | g.cm | 24.38 | 31 | ||||||||
| Motor Constants | ||||||||||||
| 14 | Teminal resistance | Ω | 1.5 | 0.55 | ||||||||
| 15 | Torque constant | g.cm/A | 11.217 | 6.678 | ||||||||
| 16 | Speed constant | rpm/V | 8687 | 1461.3 | ||||||||
| 17 | Speed/Torque constant | rpm/g.cm | 1301.5 | 1383.1 | ||||||||
| Motor Characteristic | Typical Performance | ||||||||||||||||
| Thermal parameters |
| ||||||||||||||||
| 18 | Ambient temperature | -20~+65 | ºC | ||||||||||||||
| 19 | Max. permissible winding temperature | 85 | ºC | ||||||||||||||
| Mechanical parameters | |||||||||||||||||
| 20 | Max. penmissible No-load speed | 60000 | rpm | ||||||||||||||
| 21 | Max. axial load(dynamic) | 0.15 | N | ||||||||||||||
| Other parameters | |||||||||||||||||
| 22 | Number of pole pairs | 1 | |||||||||||||||
| 23 | Number of commutator segments | 3~5 | |||||||||||||||
| 24 | Weight | 3.2 | g | ||||||||||||||
| Remarks | |||||||||||||||||
| 1 | Rotation direction, wire specification and performance parameters can be | ||||||||||||||||
| made according to customer's requirement. | |||||||||||||||||
| 2 | Motor can be mounted with various shapes and sizes of eccentric weight which | ||||||||||||||||
| is made of iron, brass or ferro-alloy to become vibration motor. | |||||||||||||||||
| 3 | Dimension with "*" in the drawing can be adjusted according to customer's requirement. | ||||||||||||||||
| 1g=0.035oz 1inch=25.4mm 1g.cm=0.098mN.m 1oz=28.35g 1mm=0.0394inch 1mN.m=10.2g.cm | |||||||||||||||||
Company & Factory
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Appliance
