SEA MOTION coreless brushless motor is a high-end precision motion component independently developed for ultra-stable and high-dynamic industrial scenarios, relying on the company’s top professional technical research team. Different from conventional brushless motors, it adopts innovative optimized winding structure and self-developed automatic winding process, effectively improving motor operating efficiency and overall service life. The product supports dual feedback of magnetic encoder and optical encoder, covering incremental and absolute multi-turn feedback modes, and can be equipped with planetary gear modules to meet high-torque output requirements. Thanks to the coreless structure design, the motor completely avoids core loss and cogging torque problems.
Supported by a fully controllable supply chain system covering R&D, production and quality inspection, every SEA MOTION coreless brushless motor undergoes strict standardized QC testing. With stable performance comparable to imported brands and flexible customization capabilities, our products have replaced imported components in many high-end fields, delivering cost-effective and high-reliability solutions for global customers.
1.Output Flange
2.Housing
3.Laminated Steel Stack
4.Permanent Magnet
5.Shaft
6.Winding
7.PCB Bracket
8.PCBA with Hall Sensors
9.Cable
10.Ball Bearings
11.O-ring
12.Input Flange
13.Balancing Disks
14.Limiting Tube
Here is a comparison of SEA MOTION coreless motor specifications with those of domestic competitors and leading international brands. This data is sourced from their official website.
|
Parameter |
Our motor |
Maxon |
Faulhaber |
Portescap |
Other brand |
|
Brand |
Our motor |
Maxon |
Faulhaber |
Portescap |
Other brand |
|
Model |
EC1636 |
EC-Max1636 |
B 1628 |
16ECP36 |
EC 1636 |
|
Diameter / mm |
16 |
16 |
16 |
16 |
16 |
|
Rated voltage / V |
24 |
24 |
24 |
24 |
24 |
|
Max efficiency / % |
72 |
71 |
69 |
/ |
72.2 |
|
No load speed / rpm |
15600 |
11900 |
31600 |
12420 |
14668 |
|
No load current / mA |
90 |
31.9 |
45 |
35 |
50 |
|
Phase resistance / Ω |
6.12 |
20.5 |
15.2 |
21 |
10.8 |
|
Max continuous torque / mNM |
7 |
8.19 |
3.3 |
7.2 |
6 |
|
Stall torque / mNM |
56.4 |
22 |
11 |
/ |
33 |
|
Speed constant / rpm/V |
653 |
510 |
1349 |
543 |
625 |
|
Torque constant / mNM/A |
14.4 |
18.7 |
7.08 |
17.6 |
15.3 |
|
Slope / rpm/mNM |
277 |
556 |
2896 |
648 |
444 |
|
Mechanical time constant / ms |
2.23 |
4.95 |
16.4 |
3.7 |
2.9 |
|
Moment of inertia / gcm² |
0.756 |
0.85 |
0.54 |
0.6 |
0.62 |
|
Length / mm |
36 |
36 |
28 |
36 |
36 |
|
Parameter |
Our motor |
Maxon |
Faulhaber |
Portescap |
Other brand |
|
Brand |
Our motor |
Maxon |
Faulhaber |
Portescap |
Other brand |
|
Model |
EC2248 |
EC-Max2248 |
B 2057 |
22ECP45 |
EC 2248 |
|
Diameter / mm |
22 |
22 |
20 |
22 |
22 |
|
Rated voltage / V |
24 |
24 |
24 |
24 |
24 |
|
Max efficiency / % |
78 |
76 |
84 |
/ |
79.7 |
|
No load speed / rpm |
12900 |
12900 |
24900 |
15700 |
12930 |
|
No load current / mA |
146 |
121 |
129 |
60 |
102 |
|
Phase resistance / Ω |
2.25 |
3.44 |
1.32 |
1.5 |
2.71 |
|
Max continuous torque / mNM |
20 |
22.7 |
19.5 |
29.4 |
18 |
|
Stall torque / mNM |
187 |
121 |
172 |
/ |
153 |
|
Speed constant / rpm/V |
543 |
549 |
1010 |
654 |
545 |
|
Torque constant / mNM/A |
17.5 |
17.4 |
9.46 |
14.6 |
17.5 |
|
Slope / rpm/mNM |
69.8 |
109 |
141 |
67.2 |
84.3 |
|
Mechanical time constant / ms |
2.54 |
5.06 |
5.9 |
1.6 |
2.8 |
|
Moment of inertia / gcm² |
3.43 |
4.45 |
4 |
2.3 |
3.1 |
|
Length / mm |
45 |
45 |
/ |
45 |
45 |
For the same size, even a slight improvement in performance and parameters presents challenges to design, manufacturing, and QC.
SEA MOTION coreless brushless motor has unparalleled performance advantages in precision motion control. Its coreless structure brings ultra-high efficiency, lower heat generation and extremely low electromagnetic interference, while the ultra-small moment of inertia realizes ultra-fast dynamic response and excellent control linearity. The motor operates extremely smoothly without low-speed jitter, with precise speed control accuracy, and achieves miniaturization and high power density, perfectly adapting to limited installation space of precision equipment. It is widely applied in multiple high-end industries: medical equipment including surgical robots and precision medical devices; industrial automation such as robotic dexterous hands and precision servo platforms; consumer electronics like drones and high-end imaging stabilization equipment; and aerospace miniature servo and attitude control systems. It is an ideal core driving component for modern high-end precision intelligent equipment.
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