Changzhou Vic-Tech Motor Technology Co., Ltd.
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High speed 2:1 to 1000:1 gear ratio N20 DC brushed motor with GB12 gear ratio
Description:
This is a N20 DC motor with gearbox.
N20 is typical brushed DC motor, and for a single motor, unloaded speed is about 15000RPM.
When the motor is attached with a gearbox, it’s speed with be much lower, and its torque will be much bigger.
The gear ratio is 2:1 to 1000:1
For gear ratio below 420:1 (including 420:1), gearbox length is 9mm.
For gear ratio over 420:1, gearbox length is 12mm
Motor Parameters:
| Motor type | N20 DC motor+gearbox |
| Rated voltage | 3V/6V/12V DC |
| Unloaded speed(single motor) | 12000~16000RPM |
| Loaded torque(single motor) | About 3g*cm |
| Output shaft | D shaft/M3 lead screw |
| Gearbox length | 9mm/12mm |
| Output speed | Single motor speed/gear ratio |
| Output torque | Single motor torque*gear ratio* efficiency |
| Gear ratio | 2:1 | 5:1 | 10:1 | 15:1 | 20:1 | 30:1 | 36:1 | 50:1 | 63:1 | 67:1 | 89:1 | 100:1 |
| Precise ratio | 2.002 | 4.995 | 9.677 | 14.754 | 20.501 | 29.120 | 36.122 | 51.103 | 63.071 | 66.801 | 89.227 | 99.002 |
| Tooth number | 23 | 20 | 13 | 18 | 15 | 12 | 20 | 20 | 14 | 17 | 14 | 13 |
| Gear levels | 2 | 2 | 2 | 3 | 3 | 3 | 4 | 4 | 4 | 4 | 4 | 4 |
| Efficiency | 80% | 80% | 80% | 72% | 72% | 72% | 65% | 65% | 65% | 65% | 65% | 65% |
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| Gear ratio | 110:1 | 150:1 | 172:1 | 210:1 | 250:1 | 275:1 | 298:1 | 380:1 | 420:1 | 500:1 | 600:1 | 1000:1 |
| Precise ratio | 110.407 | 150.948 | 171.883 | 210.591 | 250.111 | 274.403 | 297.924 | 387.689 | 421.296 | 506.155 | 599.394 | 986.406 |
| Tooth number | 12 | 18 | 13 | 12 | 13 | 12 | 12 | 12 | 12 | 18 | 16 | 12 |
| Gear levels | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 7 | 7 | 7 |
| Efficiency | 59% | 59% | 59% | 59% | 59% | 59% | 59% | 59% | 59% | 47% | 47% | 47% |
Gearbox increases motor torque and reduces motor speed
The gear ratio of the gearbox has different gear ratios for you to choose, and the efficiency of the gearbox is also related to the gear.
Output torque = raw torque * gear ratio * gearbox efficiency
output speed = original speed / gear ratio
For samples packed with foam sponge in carton.
For mass production, the products are packed in carton boxes.
For sea shipping (mass production), cartons are packed on pallets.
About express (DHL/UPS/Fedex/TNT): 5~12 days
About 4PX express: 10~20 days
About sea freight: 40~60 days (depending on different countries)