The external rotor motors listed here carries 24V 36V 48V, type Micro Motor, documented exactly as the manufacturer publishes it. Made by Constar Micromotor Co., Ltd. (17 years on the platform, typical reply ≤11h). Send your target quantity and destination for a firm quotation with current lead times.
Key Features of These External Rotor Motors
- Model Number: BO3846NH2B
- Rated Power: 300W
- Max. Output Power: 1395W
- Rated Voltage: 24V 36V 48V
- Speed Rpm: 8800RPM
- Speed(RPM): 8800rpm
Technical Specifications
| Commutation | Brushless |
|---|---|
| Rated Voltage | 24V 36V 48V |
| Rated Power | 300W |
| Speed Rpm | 8800RPM |
| Speed(RPM) | 8800rpm |
| Efficiency | IE 1 |
| Type | Micro Motor |
| Construction | Permanent Magnet |
| Frame | 38MM |
| Motor Mounting Type | Foot Mount |
| Protect Feature | IP20 |
| Usage | Gardening tool |
| Warranty | 3 months ~ 1 year |
| Continuous Current(A) | 0.7A |
| Model Number | BO3846NH2B |
| Torque | 345mNm |
| Place Of Origin | Guangdong, China |
| Brand Name | Constar |
| Motor Type | Outer Rotor Brushless motor |
| Diameter | 38mm |
| No Load Speed | 8800rpm |
| No Load Current | 0.7A |
| Product Name | 300W Brushless dc motor |
| Size | 38*46mm |
| Max. Efficiency | 87% |
| Max. Output Power | 1395W |
| KV Value | 244rpm/V |
| Selling Units | Single item |
| Single Volume | 0 cm³ |
| Single Gross Weight | 0.0 kg |
Product Details
High Power 300W Outer Rotor Brushless DC Motor
| CONSTAR MICROMOTOR | ||
 |  |  |
| PRECISION DC CORELESS MOTOR | BRUSHLESS DC MOTOR | SERVO MOTOR |
 |  |  |
| GEARMOTOR | STEP MOTOR | MINI CORELESS MOTOR |
1. Applications:electric power tool UAV,industrial automation,etc
2. Operating Environment:-40~+100°C
3. Characteristics :
The following are our standard products, we also provide customized products and service.
| 01-85-48.0 01-85-36.0 01-85-24.0 | |||||
| 1 | Voltage | V | 48.0 | 36.0 | 24.0 |
| 2 | Terminal resistance | Ω | 0.39 | 0.23 | 0.1 |
| 3 | No-load speed | rpm | 8800 | 8800 | 8800 |
| 4 | No-load current | A | 0.5 | 0.7 | 1.0 |
| 5 | Stall torque | mNm | 6358 | 6060 | 6198 |
| 6 | Stall current | A | 123.1 | 156.5 | 240.0 |
| 7 | Nominal torque | mNm | 347 | 345 | 346 |
| 8 | Nominal speed | rpm | 7850 | 7480 | 7650 |
| 9 | Nominal current | A | 6.7 | 8.5 | 13.1 |
| 10 | Max. output power | W | 1464 | 1395 | 1427 |
| 11 | Max. efficiency | % | 87.6 | 87.0 | 87.5 |
| 12 | Back-EMF constant | mV/rpm | 5.4 | 4.1 | 2.7 |
| 13 | Torque constant | mNm/A | 51.9 | 38.9 | 25.9 |
| 14 | KV Value | rpm/V | 183 | 244 | 367.0 |
| 15 | Speed/torque gradient | rpm/mNm | 1.38 | 1.45 | 1.42 |
| 16 | Rotor inertia | gcm2 | 228 | 228 | 228 |
| 17 | Weight | g | 198 | 198 | 198 |
4. Options:Lead wires length, shaft length, special coils, gearheads,bearing type, driver,encoder
5. Outline Drawing:
6.Photo:
Customized Motor Solutions:
CONSTAR MICROMOTOR specialize in design, custom and manufacture electric motors,including DC Coreless Motor, Sonic Motor, Brushless DC Motor, Gear Motor, Servo Motor, DC Core Motor and Mini Step Motor.All of them can be fully and easily customized . We committed to offer high quality, high performance, cost effective options to meet customers specific demands. Choosing to customize one of the motors in our Product Categories now!
7.Other Item
| Series | Dimension (mm) | Voltage (V) | No-load Speed (rpm) | No-Load Current (mA) | KV Value (rpm/V) | Torque Constant (mNm/A) |
|---|---|---|---|---|---|---|
| 1308ZWW | Φ13*8 | 3.7 | 39000 | 700 | 10500 | 0.85 |
| 1511ZWW | Φ15*11 | 7.4 | 35000 | 400 | 4700 | 1.97 |
| 1709ZWW | Φ17*9 | 10 | 26000 | 110 | 2600 | 3.5 |
| 1814ZWW | Φ18*14 | 6.4 | 18500 | 270 | 2900 | 3.3 |
| Φ18*14 | 6.4 | 22000 | 350 | 3440 | 2.7 | |
| 1816ZWW | Φ18*16 | 7.4 | 12000 | 160 | 1620 | 5.8 |
| 2010ZWW | Φ20*10 | 10 | 24000 | 110 | 2400 | 3.9 |
| 2015ZWW | Φ20*15 | 12 | 11300 | 80 | 940 | 9.9 |
| 2316ZWW | Φ23*16 | 12 | 19500 | 450 | 1625 | 5.8 |
| 2414ZWW | Φ24*14 | 12 | 6400 | 40 | 530 | 16.7 |
| 2814ZWW | Φ28*14 | 11.1 | 22000 | 650 | 2000 | 4.8 |
| 2820ZWW | Φ28*20 | 10.5 | 13500 | 450 | 1290 | 7.4 |
| 2824ZWW | Φ28*24 | 11.1 | 10200 | 400 | 920 | 10.3 |
| 2826ZWW | Φ28*26 | 14.8 | 13500 | 550 | 910 | 10.4 |
| 2828ZWW | Φ28*28 | 14.8 | 13000 | 650 | 880 | 10.8 |
| 2830ZWW | Φ28*30 | 14.8 | 13300 | 750 | 900 | 10.6 |
| 2914ZW | Φ29*14 | 24 | 5500 | 100 | 230 | 40 |
| 2914ZWW | Φ29*14 | 24 | 5500 | 100 | 230 | 40 |
| 3212ZWW | Φ32*12 | 12 | 22000 | 500 | 1833 | 5.0 |
| 3216ZWW | Φ32*16 | 12 | 3200 | 500 | 270 | 35 |
| 3517ZWW | Φ35*17 | 24 | 4450 | 60 | 185 | 50 |
| 3518ZWW | Φ35*18 | 12 | 10000 | 500 | 830 | 11.3 |
| 3825ZWW | Φ38*25 | 14.8 | 10400 | 560 | 700 | 13.5 |
| 3828ZWW | Φ38*28 | 24 | 29000 | 700 | 1200 | 7.8 |
| 4316ZWW | Φ43*16 | 12 | 4350 | 180 | 360 | 26 |
| 4321ZWW | Φ43*21 | 24 | 6700 | 200 | 280 | 34 |
| 4326ZWW | Φ43*26 | 24 | 6100 | 300 | 260 | 37 |
| 4834ZWW | Φ48*34 | 22.2 | 10400 | 1300 | 470 | 20 |
| 6133ZWW | Φ61*33 | 22.2 | 6400 | 930 | 290 | 33 |
| 8724ZWW | Φ87*24 | 36 | 3600 | 200 | 100 | 95 |
High Power 300W Outer Rotor Brushless DC Motor
Ordering and Pricing
- Minimum order quantity: 5000 piece
- Volume pricing:
- 5000+ piece: US $55 / piece
- Ships from: China
- Customization: OEM and ODM accepted on qualifying volumes.
Frequently Asked Questions
What is the minimum order quantity for this external rotor motors?
The standard minimum order quantity is 5000 piece. Trial orders can usually be arranged for buyers evaluating the product before a full production run.
What warranty is provided?
The manufacturer provides a 3 months ~ 1 year warranty. Spare parts and technical support remain available after the warranty period.
Can the external rotor motors be supplied for my local voltage?
The standard configuration is 24V 36V 48V. Alternative voltage and frequency builds are available when specified at the time of order.
Do you accept OEM or custom branding?
Yes. Custom logo, colour, packaging and specification changes are accepted on qualifying order volumes. Send your artwork and technical requirements with your enquiry.
How long does production and delivery take?
In-stock configurations typically ship within 7–15 days. Customised or large-volume orders are usually produced in 25–35 days, confirmed on order.
About the Manufacturer
This product is produced by Constar Micromotor Co., Ltd., based in China. The company 17 years as a verified Alibaba.com supplier, operates its own manufacturing. Browse the full Constar Micromotor Co., Ltd. range on HVACR Nexus.
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