T57H76-2804 NEMA-23 Stepping Motor
NEMA 23 stepper motor, 76mm body, 2.8 A/phase, 1.85 Nm / 18.9 kg-cm holding torque, 4 leads.
Overview
The T57H76-2804 is a NEMA 23 stepper motor with a 76mm body, the longest and highest-torque motor at 2.8 A in the T57H series in this catalogue.
It holds 1.85 Nm / 18.9 kg-cm at standstill - nearly double the T57H51-2804's 0.99 Nm / 10.1 kg-cm - for the same 2.8 A current, entirely down to the longer body's extra magnetic material. Winding figures are 1.13 ohm and 3.6 mH. 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.
Where 1.85 Nm / 18.9 kg-cm is more than needed, the shorter T57H56-2804 and T57H51-2804 share the same current at lower torque and lower cost. Where more torque is needed at higher current instead, the T57H111-4004 draws 4.4 A. The T57H76-2804B shares this exact electrical spec under a separate SKU, and all of these keep the same NEMA 23 mounting flange, so mount compatibility is never the deciding factor.
Supplied by Tiny Controls in India.
Specifications
| Flange size | 57 mm (NEMA 23) |
|---|---|
| Phase current | 2.8 A |
| Holding torque | 1.85 Nm \ 18.9 kg-cm |
| Phase resistance | 1.13 Ω |
| Phase inductance | 3.6 mH |
| Lead wires | 4 |
Downloads
Questions
Is this the most torque you can get at 2.8A in a NEMA 23 frame?
Yes — the longest and highest-torque motor at 2.8A in the T57H series, nearly double the T57H51-2804's torque for the same current.
Would this be overkill for a lighter job?
Possibly — the shorter T57H56-2804 and T57H51-2804 share the same current at lower torque and lower cost, if that's enough.
I've seen a "T57H76-2804B" too — is that different?
No, same exact electrical spec, under a separate SKU.
What's the next step up if I need more torque at higher current?
The T57H111-4004, drawing 4.4A.
Does mount compatibility change anywhere in the T57H series?
No — all of them keep the same NEMA 23 mounting flange, so it's never the deciding factor between them.