T57H56-2804 NEMA-23 Motor
NEMA 23 stepper motor, 56mm body, 2.8 A/phase, 1.24 Nm / 12.6 kg-cm holding torque, 4 leads.
Overview
The T57H56-2804 is a NEMA 23 stepper motor with a 56mm body, drawing the same 2.8 A per phase as the shorter T57H51-2804 but holding more torque - 1.24 Nm / 12.6 kg-cm against 0.99 Nm / 10.1 kg-cm - because the longer body carries more magnetic material for the same current.
Winding figures are 0.9 ohm and 2.5 mH. The 2.8 A current suits a Tstep-087 or Tstep-117X range drive (1.2-7.0 A) without needing anything larger, and leaves headroom for a supply voltage sag under load.
Four lead wires bring out one connection per phase, fixed in series at the factory.
For still more torque at the same current, the T57H76-2804 runs a 76mm body at 1.85 Nm / 18.9 kg-cm. The T57H56-2804B shares this exact electrical spec under a separate SKU. All of these share the same NEMA 23 flange, so a mount built for one accepts the others, and all wire four leads in fixed series.
Supplied by Tiny Controls in India.
Specifications
| Flange size | 57 mm (NEMA 23) |
|---|---|
| Phase current | 2.8 A |
| Holding torque | 1.24 Nm \ 12.6 kg-cm |
| Phase resistance | 0.9 Ω |
| Phase inductance | 2.5 mH |
| Lead wires | 4 |
Downloads
Questions
I've also seen a "T57H56-2804B" listing — is that a different motor?
No — it shares this motor's exact electrical spec under a separate SKU.
How is this different from the T57H51-2804?
Same 2.8A current, but more torque (1.24 Nm vs 0.99 Nm) — the longer 56mm body carries more magnetic material for the same current.
Is there more torque available at the same current?
Yes — the T57H76-2804 runs a 76mm body at 1.85 Nm / 18.9 kg-cm, still at 2.8A.
Does the current leave any headroom, or is it right at the drive's limit?
There's headroom — a Tstep-087 or Tstep-117X range drive (1.2-7.0A) covers 2.8A without needing anything larger, leaving room for a supply voltage sag under load.
Does this share a mount with the other T57H motors?
Yes — same NEMA 23 flange throughout the series.