T57H51-2804 NEMA-23 Motor
NEMA 23 stepper motor, 51mm body, 2.8 A/phase, 0.99 Nm / 10.1 kg-cm holding torque, 4 leads.
Overview
The T57H51-2804 is a NEMA 23 stepper motor with a 51mm body, the shortest and lowest-torque motor in the T57H series in this catalogue.
It draws 2.8 A per phase (0.83 ohm, 2.2 mH) and holds 0.99 Nm / 10.1 kg-cm at standstill. That current suits a Tstep-087 or Tstep-117X range drive (1.2-7.0 A) with plenty of headroom.
Four lead wires bring out one connection per phase, fixed in series at the factory.
The T57H series runs longer for more torque at the same 2.8 A current on most models: the T57H56-2804 (56mm body, 1.24 Nm / 12.6 kg-cm) and T57H76-2804 (76mm body, 1.85 Nm / 18.9 kg-cm) share this current draw but carry more magnetic material in a longer body. Where more torque is needed at higher current instead, the T57H111-4004 steps up to 4.4 A. All share the same NEMA 23 mounting flange, so the choice comes down to available body length and required torque, not fitment.
Supplied by Tiny Controls in India.
Specifications
| Flange size | 57 mm (NEMA 23) |
|---|---|
| Phase current | 2.8 A |
| Holding torque | 0.99 Nm \ 10.1 kg-cm |
| Phase resistance | 0.83 Ω |
| Phase inductance | 2.2 mH |
| Lead wires | 4 |
Downloads
Questions
A couple of your other T57H motors draw the same 2.8A but have more torque — how?
Body length — the T57H56-2804 (56mm) and T57H76-2804 (76mm) share this exact current draw but carry more magnetic material in a longer body, which is where their extra torque comes from.
What drive covers this motor?
A Tstep-087 or Tstep-117X range drive (1.2-7.0A), with plenty of headroom.
Do all the T57H motors fit the same mount?
Yes — all share the same NEMA 23 mounting flange, so the choice comes down to available body length and required torque, not fitment.
If I need more torque at higher current instead of a longer body, what's available?
The T57H111-4004 steps up to 4.4A for significantly more torque.
Is this the entry point of the T57H series?
Yes — the shortest body and lowest torque in the group.