STEKI SMB04-11 Permanent Magnet Brake (2.5 Nm)
STEKI · MPN SMB04-11 · Maglev ID ac-steki-smb04-11
CN Maker in China, factory not confirmed unknown VERIFIED
Permanent-magnet power-off brake from Shanghai Tangyi (STEKI), which markets it for humanoid joint modules; a Chinese counterpart of the Kendrion PM line.
Specifications
| Holding torque | 2.5 Nm (dynamic friction torque; static not stated) |
|---|---|
| Voltage | 24 VDC |
| Outer diameter | 44 mm (ΦA f9) |
| Axial thickness | 21.4 mm (L, stator body; hub K adds to overall) |
| Type | Permanent magnet, power-off, zero backlash |
Who makes it
MakerShanghai Tangyi Electronics Co., Ltd. (上海堂奕电子)
Based inChina
RoleBrand owner
Need a different shaft, connector, firmware or enclosure, or a price at 1,000 units? Maglev takes the catalog part to the factory and comes back with a custom version and one fixed price.
Landed cost in the US
CN
40.6%
TW
10%
VN
15.6%
IN
13.1%
JP
12.5%
KR
12.5%
DE
10%
MX
13.1%
US
0%
Total US duty on this part by where it is made (2026-10-29). Mexico shown before USMCA preference; qualifying goods enter duty free. Your factory choice, not the shipping port, sets the origin.
Loading duty data…
Compliance
| HTS classification | 8505.20.0000 |
|---|---|
| NDAA | unknown |
| Blue UAS | unknown |
| FCC | n/a |
Sources
- http://www.steki.cn/product/6/91.htmlSMB spec images (SMB04-11: 2.5 Nm dynamic, DC24V 9 W, 0.2 kg, ΦA 44 mm, L 21.4 mm, hub bore 6-10 mm)
- https://www.sohu.com/a/1045123499_583075article: STEKI permanent magnet brakes for humanoid robots, ~6% robot-brake share 2025
Record confidence: VERIFIED. VERIFIED means the maker's own documents; REPORTED means a credible third party; UNVERIFIED means a single weak source. Anything we could not confirm says unknown.