Product Description
2845 coreless DC motor
This type of 2845 coreless DC motor will offer a good specification with continuous high power and torque, high precision, reliable control, low vibration and noise on power tools and can provide a good user experience. We can make custom shafts and holes in the front cover. This type of 2845 coreless DC motor can completely replace the DC motor from Europe. Most importantly, we can customize the motor parameters for our customers, which will give full play to the advantages of the product, shorten the delivery time and save costs for our customers.
Product parameters
| Motor parameter | Motor type | ||||
|---|---|---|---|---|---|
| name | unit | XBD28450 6058GT- 30102 | XBD28451 2062GT- 30102 | XBD28452 4064GT- 30102 | XBD28454 8060GT- 30102 |
| Rated voltage | V/DC | 6 | 12 | 24 | 48 |
| Rated speed | rpm | 5336 | 5394 | 5568 | 6090 |
| Rated current | A | 0.67 | 0.8 | 0.59 | 0.29 |
| Rated torque | mi | 6.09 | 14.3 | 20.33 | 18.56 |
| No-load speed | rpm | 5800 | 6200 | 6400 | 7000 |
| No-load current | mA | 45 | 25 | 16 | 10 |
| Maximum efficiency | % | 85.4 | 87.5 | 88.3 | 87 |
| Rotational speed | rpm | 5394 | 5828 | 5984 | 6545 |
| Electric current | A | 0.588 | 0.384 | 0.301 | 0.152 |
| torque | mNm | 5.3 | 6.6 | 10.2 | 9.3 |
| Maximum power | W | 11.6 | 17.9 | 26.2 | 26.2 |
| Rotational speed | rpm | 2900 | 3100 | 3200 | 3500 |
| Electric current | A | 3.9 | 3 | 2.2 | 1.1 |
| torque | mNm | 38.1 | 55 | 78.2 | 71.4 |
| Locked-rotor current | A | 7.8 | 6 | 4.4 | 2.2 |
| Locked-rotor moment | mNm | 76.2 | 110 | 156.4 | 142.8 |
| Motor impedance | Ω | 0.77 | 2 | 5.45 | 21.82 |
| Inductive reactance of motor | mH | 0.053 | 0.16 | 0.55 | 2.1 |
| Torque constant | mNm/A | 9.82 | 18.41 | 35.68 | 65.18 |
| Speed constant | rpm/V | 966.7 | 516.7 | 266.7 | 145.8 |
| Revolution/torque constant | rpm/mNm | 76.1 | 56.4 | 40.9 | 49 |
| Mechanical time constant | ms | 6.66 | 6.28 | 4.78 | 6 |
| Rotor inertia | gcm2 | 8.35 | 11.47 | 11.16 | 11.69 |
Technological Innovation
Hollow cup brush motor is a kind of DC motor. Its core component, the rotor, is an empty core cup-shaped structure, which is the origin of its name. The motor contains a brush and a commutator, the brush is mainly used to transfer the current from the external power supply to the motor, and the commutator is used to change the direction of the current during the operation of the motor to ensure that the motor continues to rotate stably.
Product Display
Low torque ripple
The torque ripple during the operation of the motor is relatively small. This is because the distribution of the hollow cup winding is more uniform, and the electromagnetic force change in the magnetic field is relatively smooth, making the motor output torque more stable, able to provide a more stable power for the load, and performing well in equipment with high torque stability requirements, such as high-precision PTZ motors.
Small size and light weight
The overall structure of the brush motor is compact, and the hollow cup shape of the rotor and the lighter material (such as copper, etc.) make the weight and volume of the motor have advantages. This makes it widely used in devices with strict space and weight restrictions, such as small drones and portable medical devices.
Size & Interface
Quality Control
Assembly link control: tight seam
The assembly process of the motor is like a precise jigsaw puzzle, where every component must be fitted into place without error. Our assembly workers are professionally trained, have rich experience and a high sense of responsibility. When assembling the hollow cup rotor, ensure that its position in the stator is accurate and the clearance with the brush and commutator is just right. The tightening torque of each screw is precisely calculated and strictly controlled to prevent the overall performance of the motor from being too tight or too loose. After the assembly is completed, the appearance of the motor is also carefully checked to ensure that no parts are loose, scratched or improperly assembled.
Performance testing: Comprehensive inspection
We have a set of perfect performance testing system, for each hollow cup brush motor for comprehensive and strict inspection. In terms of electrical performance detection, the starting current, no-load current, rated power, speed and torque of the motor are measured by high-precision test equipment to ensure that these parameters are within the specified tolerance range and meet the design requirements. For the mechanical properties of the motor, we simulate the actual working environment and carry out long-term operating tests to observe the vibration, noise level and heating degree of the motor. Only motors that are fully qualified in all performance indicators will be labeled as qualified in quality and enter the market.
Durability test
In order to ensure the reliability and life of the motor, we will carry out a long time durability test on the motor. In the simulation of various actual working conditions, the motor is continuously run for hundreds of hours, during which the performance indicators of the motor are continuously monitored, such as temperature changes, vibration conditions, electrical parameter stability, etc. Only motors that pass the durability test and have no significant degradation in performance will be considered qualified products.
Quality traceability system: Tracing to the source
In order to ensure the continuous stability of quality, we have established a sound quality traceability system. Each hollow cup brush motor has a unique identity, from the procurement batch of raw materials, all aspects of the production process data to the final test report, are recorded in detail. Once a quality problem is found, it can be quickly traced back to the root of the problem, and effective corrective measures can be taken to avoid the recurrence of similar problems.
Application Cases
Hollow cup brush motor in many areas of excellence. In aerospace small UAVs, their lightweight, high-speed characteristics facilitate flight and photography. In the field of medical devices, such as handheld massagers and insulin pumps, low torque pulsation and precise control guarantee results. In products such as electric toothbrushes in consumer electronics, it offers a convenient experience with high RPM and small size.
Cooperative partner
Service
Our technical service team consists of a group of engineers with deep expertise and rich practical experience in the field of electrical machinery. They are familiar with the principle and structure of the hollow cup brush motor, whether it is the electromagnetic design of the motor, the hollow cup characteristics of the rotor, or the complex interaction between the brush and the commutator, they can be accurately analyzed. Whether it is a simple fault consultation or a complex technical problem, our engineers have the expertise to quickly provide accurate and effective solutions.
