# ThinGap LSI 51-13 Slotless Motor Kit

51 mm slotless, zero-cogging frameless kit with 30 mm clear bore and very high peak-to-continuous ratio; benchmark for smooth gimbal and precision joints.

- Maglev ID: mo-thingap-lsi-51-13
- Brand: ThinGap (Allied Motion)
- MPN: LSI 51-13
- Category: motors / Frameless BLDC Torque Motors
- Origin: US (maker HQ, factory not confirmed)
- Maker: ThinGap (brand, US)
- NDAA: unknown · Blue UAS: unknown · FCC: n/a
- HTS: 8501.31.40.00 (typical)
- MOQ: unknown · Lead time: 16-20 weeks average (series page)
- Confidence: VERIFIED

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

## Specifications
- Peak torque: 1.01 Nm (1 s); 0.59 Nm (3 s)
- Continuous torque: 0.12 Nm at max speed (unhoused)
- Outer diameter: 51 mm
- Axial length: 13 mm axial height
- Voltage: 20.5 Vpk l-l required at max speed (WYE series winding)
- Mass: 91 g part set (rotor 56, stator 35)
- Through hole: 30 mm
- Max continuous speed: 1820 rpm
- Torque constant: 0.087 Nm/Arms (WYE series)
- Max continuous phase current: 1.4 Arms (WYE series)
- Magnetic poles: 18
- Cogging: zero (slotless)

## Links
- Product: https://www.thingap.com/ls-series/
- Datasheet: https://www.thingap.com/wp-content/uploads/2026/09/LSI-51-13-Datasheet-Rev-I.pdf
- CAD: https://www.thingap.com/wp-content/uploads/2020/03/VirtualAssembly_051-013.step

## Sources
- https://www.thingap.com/ls-series/ (LS series table, lead times, STEP links)
- https://www.thingap.com/wp-content/uploads/2026/09/LSI-51-13-Datasheet-Rev-I.pdf (datasheet Rev I: full specs)