Since 2019, SEA MOTION has focused on the R&D and production of high-end coreless DC motor, building a fully independent and controllable industrial supply chain covering product design, OEM production, standardized QC testing and customized motion control solutions. Adopting exclusive optimized winding technology consistent with international premium brands and self-developed automatic winding equipment, our coreless DC motor greatly improves overall operating efficiency and solves common performance drawbacks of traditional motors. The product supports magnetic and optical encoder feedback, including incremental and absolute multi-turn feedback modes, and can be matched with planetary gear modules to boost output torque. Benefiting from core coreless design, the motor eliminates iron loss and tooth groove torque, achieving ultra-low heat generation and ultra-stable operation. With strict full-process quality control and complete industrial chain advantages, SEA MOTION, as a professional China coreless DC motor manufacturer, can stably supply high-standard products for medical, industrial, aerospace and consumer electronics fields, supporting both standardized mass production and personalized customized projects.
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.
For the same size, even a slight improvement in performance and parameters presents challenges to design, manufacturing, and QC.
|
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 |
SEA MOTION coreless DC motor boasts outstanding comprehensive performance far exceeding traditional motors, with ultra-low moment of inertia that is only 1/10 to 1/5 of conventional motors, delivering excellent dynamic response and ultra-high control linearity. It features zero cogging torque, achieving jitter-free low-speed operation with speed fluctuation controlled within 2%, alongside ultra-high power density, low electromagnetic interference and high energy efficiency. Relying on these superior characteristics, the motor covers multiple high-end precision industries. In the medical field, it is widely used in endoscopes, surgical robots and precision medical pumps. In industrial scenarios, it serves robot dexterous hands, servo gimbals and precision automation equipment. It also empowers high-precision consumer electronics such as drones and camera anti-shake systems, as well as aerospace attitude control and miniature servo equipment, becoming a core high-cost-performance component for high-end precision motion systems.
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403 4F Office Building Robot Industry Park No.232 Yuanfeng Road National High Tech Park Kunshan Suzhou Jiangsu China
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