Precision positioning (CNC, 3D printers, camera sliders)
Open-loop positioning: 1.8° steps, 126.0 N·cm holding torque, 2.8 A per phase.
Engineering inference
SOYO
SOYO SY57STH56-2804A NEMA 23 hybrid bipolar stepper: 1.8° step (200 steps/rev), 2.8 A per coil at 2.52 V, 0.9 Ω / 2.5 mH per phase, 126 N·cm (13 kg·cm) holding torque, 56.4 mm square × 56 mm body, 6.35 mm D-shaft, 0.7 kg, four 30 cm bare leads.
SY57STH56-2804AMotorFacts about the complete product. Unknown values remain open design questions.
Guidance to help you shortlist. The basis is shown for each recommendation.
Open-loop positioning: 1.8° steps, 126.0 N·cm holding torque, 2.8 A per phase.
Engineering inferenceNo-load speed, rated performance and stall limits describe different operating points. A stall specification is not a continuous operating rating.
From $76.72 at www.pololu.com. Prices are observed unit prices before tax and shipping.
56.4 × 56.4 × 77 mm. A STEP model is available for enclosure fit checks.
Every value in this record is traced to a source — 2 documents including the board and chip datasheets — with the page and table cited per value. Unknowns are left explicit, never guessed.