T57H56-2804B 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 T57H56-2804B is a NEMA 23 stepper motor with the same electrical spec as the T57H56-2804 - 2.8 A per phase, 0.9 ohm, 2.5 mH, 1.24 Nm / 12.6 kg-cm holding torque, 56mm body - listed as a separate SKU. The published spec sheet does not call out what distinguishes the two; check with Tiny Controls before assuming a mechanical difference such as shaft length if that matters for a specific mount.
The 2.8 A current suits a Tstep-087 or Tstep-117X range drive (1.2-7.0 A).
Four lead wires bring out one connection per phase, fixed in series at the factory.
For more torque at the same current in a longer body, the T57H76-2804 and T57H76-2804B step up to 76mm and 1.85 Nm / 18.9 kg-cm. All share the same NEMA 23 flange and 2.8 A current, so drive sizing doesn't change across the group, and the choice comes down to how much torque the axis needs.
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
What's actually different between this and the T57H56-2804?
Not stated — the published spec sheet doesn't call out what distinguishes the two. If a mechanical difference (like shaft length) would matter for your specific mount, check with Tiny Controls directly before assuming rather than guessing.
The price differs slightly from the T57H56-2804 — does that mean something's actually different?
Possibly, but it isn't documented what. Worth confirming directly rather than assuming based on price alone.
What drive covers this motor?
A Tstep-087 or Tstep-117X range drive (1.2-7.0A).
More torque at the same current, in a longer body?
Yes — the T57H76-2804 and T57H76-2804B step up to a 76mm body at 1.85 Nm / 18.9 kg-cm.
Same mount as the rest of the T57H series?
Yes — same NEMA 23 flange and 2.8A current throughout the group.