# Laifual FSG-25-100 High-Torque Cup-Type Strain-Wave Reducer

![Laifual FSG-25-100 High-Torque Cup-Type Strain-Wave Reducer](https://parts.trymaglev.com/img/ac-laifual-fsg-25-100.webp)

Size-25 100:1 high-torque cup-type harmonic reducer (+30% torque vs FSS) from Laifual, China's number-two strain-wave maker; 1.46 kg (FSG-I/II).

- Maglev ID: ac-laifual-fsg-25-100
- Brand: Laifual
- MPN: FSG-25-100
- Category: actuators / Strain-Wave (Harmonic) Reducers
- Origin: CN (maker HQ, factory not confirmed)
- Maker: Zhejiang Laifual Drive Co., Ltd. (浙江来福谐波传动股份有限公司, HKEX 3952) (brand, CN)
- NDAA: unknown · Blue UAS: unknown · FCC: n/a
- HTS: 8483.40.50.10
- MOQ: unknown · Lead time: unknown
- Confidence: VERIFIED

## Price
- No public price. Request a quote via POST /api/rfq or the order pad.

## Specifications
- Ratio: 100:1
- Rated torque: 87 N·m at 2,000 rpm input
- Peak torque (repeated / momentary): 204 N·m repeated (start/stop) / 369 N·m momentary
- Backlash: ≤20 arcsec
- Outer diameter: unknown
- Hollow shaft: no (cup type)

## Links
- Product: https://www.laifualdrive.com/fsg/
- Datasheet: none
- CAD: none

## Equivalents
- Harmonic Drive CSG-25-100-2UH High-Torque Strain-Wave Gear Unit (ac-harmonicdrive-csg-25-100-2uh)
- Leaderdrive LCSG-25-100 High-Torque Cup-Type Strain-Wave Reducer (ac-leaderdrive-lcsg-25-100)

## Sources
- https://www.laifualdrive.com/fsg/ (FSG rating table: size 25, ratio 100, backlash, weight)