# Nidec FLEXWAVE WPU-50-100-SRH Hollow-Shaft Strain-Wave Unit

FLEXWAVE high-torque type B2 open hollow-shaft unit, size 50 (HD size-20 class), 100:1; also offered as Smart-FLEXWAVE with built-in torque/temperature sensor (BD code).

- Maglev ID: ac-nidec-wpu-50-100-srh
- Brand: Nidec Drive Technology
- MPN: WPU-50-100-SRH
- Category: actuators / Strain-Wave (Harmonic) Reducers
- Origin: JP (maker HQ, factory not confirmed)
- Maker: Nidec Drive Technology (formerly Nidec-Shimpo) (brand, JP)
- 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: 52 N·m
- Peak torque (repeated / momentary): 107 N·m maximum output / 191 N·m emergency stop
- Backlash: zero backlash (maker claim)
- Outer diameter: unknown (leaflet lists D=90 mm and B=95 mm for size 50; which is the housing OD is not labelled)
- Hollow shaft: yes (SRH = hollow shaft unit)

## Links
- Product: https://www.nidec.com/files/user/www-nidec-com/nidec-drivetechnology/product/download/catalogs_pdf/PowerTransmission_WP/NDTC-FLEXWAVE_WPseries_leaflet_en_41781.pdf
- Datasheet: https://www.nidec.com/files/user/www-nidec-com/nidec-drivetechnology/product/download/catalogs_pdf/PowerTransmission_WP/NDTC-FLEXWAVE_WPseries_leaflet_en_41781.pdf
- CAD: none

## Equivalents
- Harmonic Drive SHG-20-100-2UH Hollow-Shaft Strain-Wave Gear Unit (ac-harmonicdrive-shg-20-100-2uh)

## Sources
- https://www.nidec.com/files/user/www-nidec-com/nidec-drivetechnology/product/download/catalogs_pdf/PowerTransmission_WP/NDTC-FLEXWAVE_WPseries_leaflet_en_41781.pdf (WP leaflet: series lineup (WPU-SRH), B2 spec table size 50 ratio 100, SRH dimension table)