External rotor motors — 24v, type Micro Motor. The complete factory specification follows. 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: 5540ZW
- Output Power: 340W
- Rated Voltage: 24v
- Speed(RPM): 15390rpm
- Place Of Origin: Guangdong, China
- Protect Feature: Totally Enclosed
Technical Specifications
| Commutation | Brushless |
|---|---|
| Speed(RPM) | 15390rpm |
| Efficiency | Other |
| Type | Micro Motor |
| Construction | Permanent Magnet |
| Protect Feature | Totally Enclosed |
| Usage | Car, Home Appliance, Medical equipment, industrial equipment, navigation models |
| Continuous Current(A) | 1.87A |
| Model Number | 5540ZW |
| Torque | 20mNm |
| Place Of Origin | Guangdong, China |
| Output Power | 340W |
| Brand Name | CONSTAR |
| Motor Type | DC motor |
| Weight | 210g |
| Keywords | dc brushless motor |
| Noise | low noise |
| Rated Voltage | 24v |
| Size | 55*40mm |
| Structure | Brushless |
| Packaging Details | CARTON BOX |
| Port Of Dispatch | HongKong OR ShenZhen |
| Selling Units | Single item |
| Single Volume | 0 cm³ |
| Single Gross Weight | 0.0 kg |
| Supply Ability | 200000 pieces per Month |
Product Details
high power 24v dc motor,diameter 55mm,dc brushless motor
| CONSTAR MICROMOTOR | ||
![]() ![]() |
![]() ![]() |
![]() ![]() |
| PRECISION DC CORELESS MOTOR | BRUSHLESS DC MOTOR | SERVO MOTOR |
![]() ![]() |
![]() ![]() |
![]() ![]() |
| GEARMOTOR | STEP MOTOR | MINI CORELESS MOTOR |
Precision driving field in medical equipment, industrial automation, etc.
| -1-24.0 | |||
| 1 | Voltage | V | 24 |
| 2 | Terminal resistance | Ω | 0.42 |
| 3 | No-load speed | rpm | 18400 |
| 4 | No-load current | A | 0.53 |
| 5 | Stall torque | mNm | 700 |
| 6 | Stall current | A | 57 |
| 7 | Nominal torque | mNm | 70 |
| 8 | Nominal speed | rpm | 16500 |
| 9 | Nominal current | A | 6.2 |
| 10 | Max. output power | W | 337 |
| 11 | Max. efficiency | % | 82 |
| 12 | Back-EMF constant | mV/rpm | 1.3 |
| 13 | Torque constant | mNm/A | 12.4 |
| 14 | KV Value | rpm/V | 770 |
| 15 | Speed/torque gradient | rpm/mNm | 26 |
| 16 | Rotor inertia | gcm2 | 500 |
| 17 | Weight | g | 210 |




Lead wires length, Shaft length, Special coils, Gearheads, Bearing type, Hall sensor, Encoder, Driver
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!
| Series | Dimension
(mm) |
Voltage
(V) |
No-load Speed
(rpm) |
No-Load Current
(mA) |
KV Value
(rpm/V) |
Torque Constant
(mNm/A) |
|---|---|---|---|---|---|---|
| 2914ZW | Φ29*14 | 24 | 5500 | 100 | 230 | 40 |
| 5540ZW | Φ55*40 | 24 | 18400 | 530 | 770 | 12.4 |
Ordering and Pricing
- Minimum order quantity: 5 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 5 piece. Trial orders can usually be arranged for buyers evaluating the product before a full production run.
Can the external rotor motors be supplied for my local voltage?
The standard configuration is 24v. 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.
See more in External Rotor Motors on HVACR Nexus.
























