# ST4118 NEMA 17 Stepper 0.50 N·m 1.8 A (ST4118L1804-A)

![ST4118 NEMA 17 Stepper 0.50 N·m 1.8 A (ST4118L1804-A)](https://parts.trymaglev.com/img/mo-nanotec-st4118l1804-a.webp)

German-brand NEMA 17 hybrid stepper with free STEP model and published torque curves; solid choice where documentation matters.

- Maglev ID: mo-nanotec-st4118l1804-a
- Brand: Nanotec
- MPN: ST4118L1804-A
- Category: motors / Stepper & Integrated Stepper Motors
- Origin: DE (maker HQ, factory not confirmed)
- Maker: Nanotec Electronic (brand, DE)
- NDAA: unknown · Blue UAS: unknown · FCC: n/a
- HTS: 8501.10.40.40 (typical)
- MOQ: unknown · Lead time: unknown
- Confidence: VERIFIED

## Price
- 1+: $54.30 (list, 2026-10-29, https://nanotec.com/us/en/products/372-st4118l1804-a)

## Specifications
- Frame size: NEMA 17
- Holding torque: 50 N·cm
- Rated current: 1.8 A/winding
- Step angle: 1.8°/step
- Length A: 48.5 mm
- Integrated driver: No
- Phase resistance: 1.75 Ω
- Phase inductance: 3.3 mH
- Rotor inertia: 82 g·cm²

## Links
- Product: https://nanotec.com/us/en/products/372-st4118l1804-a
- Datasheet: https://www.nanotec.com/fileadmin/files/Datenblaetter/Schrittmotoren/ST4118/L/ST4118L1804-A.pdf
- CAD: https://nanotec.com/us/en/products/372-st4118l1804-a

## Equivalents
- NEMA 17 Bipolar Stepper 0.59 N·m 2.0 A 48 mm (17HS19-2004S1) (mo-stepperonline-17hs19-2004s1)
- QMot QSH4218 NEMA 17 Stepper 0.35 N·m 1.0 A (QSH4218-41-10-035) (mo-trinamic-qsh4218-41-10-035)

## Sources
- https://nanotec.com/us/en/products/372-st4118l1804-a (specs (torque, current, R, L, inertia, length), single price $54.30 USD in page data, STP + PDF downloads)