Harmonic Drive SHF-25-100-2A-GR Silk-Hat Component Set
Harmonic Drive · MPN SHF-25-100-2A-GR · Maglev ID ac-harmonicdrive-shf-25-100-2a-gr
JP Maker in Japan, factory not confirmed unknown VERIFIED
Benchmark size-25 100:1 standard-torque silk-hat (hat-type) component set with large hollow bore; 0.48 kg.
Specifications
| Ratio | 100:1 |
|---|---|
| Rated torque | 67 N·m at 2,000 rpm input |
| Peak torque (repeated / momentary) | 157 N·m repeated (start/stop) / 284 N·m momentary |
| Backlash | Zero backlash (maker claim; no arcsec figure published) |
| Outer diameter | 104 mm (φI h6, flexspline hat flange, largest diameter); circular spline φA h6 = 85 mm |
| Hollow shaft | yes (silk-hat, large hollow bore) |
| Length | 37 mm (dimension B, SHF Series, overall axial position) |
| Mass | 480 g (0.48 kg) |
| Input bore | 11 mm (φV H7 standard wave generator bore; max 15 mm) |
Who makes it
MakerHarmonic Drive LLC / Harmonic Drive Systems
Based inJapan
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%
TW
10%
VN
15%
IN
12.5%
JP
12.5%
KR
12.5%
DE
10%
MX
12.5%
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 | 8483.40.50.10 |
|---|---|
| NDAA | unknown |
| Blue UAS | unknown |
| FCC | n/a |
| Notes | Harmonic Drive rates torque at 2,000 rpm input. Peak column: L10 limit for repeated peak / limit for momentary peak. |
Equivalents from other makers
Sources
- https://www.harmonicdrive.net/products/component-sets/silk-hat/shf-2aSHF-2A table: SHF-25-100-2A-GR torques, mass
- https://www.harmonicdrive.net/_hd/content/documents1/SHG-SHF_Component.pdfOuter diameter (researched 2026-11-03); Length (researched 2026-11-03); Mass (researched 2026-11-03); Input bore (researched 2026-11-03)
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.