T42H47-1504 NEMA-17 Step Motor
NEMA 17 stepper motor, 47mm body, 1.5 A/phase, 0.54 Nm / 5.5 kg-cm holding torque, 4 lead wires.
Overview
The T42H47-1504 is a NEMA 17 stepper motor with a 47mm body, longer than the T42H38 pair, which is where its extra torque comes from rather than from current alone.
It draws 1.5 A per phase (1.65 ohm, 4.8 mH) - actually less current than the T42H38-1684 - yet holds 0.54 Nm / 5.5 kg-cm, over 50% more torque, because the longer body carries more magnetic material. That current is well within the Tstep-484 (0.7-4.0 A) or any Tstep-087 range drive.
Four lead wires bring out one connection per phase, fixed in series at the factory.
Within the same 47mm body, the T42H47-1684 and T42H47-1684B run at higher current for more torque still, the latter with a second shaft end for mounting an encoder or handwheel.
Winding inductance (4.8 mH) is higher than the T42H38 pair's 3.2 mH, which is normal for a longer motor and means the driver takes slightly longer to establish current at each step - a difference that only matters at high step rates, not at typical router or engraver feed speeds.
Supplied by Tiny Controls in India.
Specifications
| Flange size | 42 mm (NEMA 17) |
|---|---|
| Phase current | 1.5 A |
| Holding torque | 0.54 Nm \ 5.5 kg-cm |
| Phase resistance | 1.65 Ω |
| Phase inductance | 4.8 mH |
| Lead wires | 4 |
Downloads
Questions
This actually draws less current than the T42H38-1684 but holds more torque — how does that work?
The extra torque comes from the longer 47mm body, which carries more magnetic material — not from current. It's over 50% more torque than the T42H38-1684 on less current.
What drive covers this?
The Tstep-484 (0.7-4.0A) or any Tstep-087 range drive — well within its current.
The inductance is higher than the shorter T42H38 motors — does that actually matter?
Only at high step rates — the driver takes slightly longer to establish current at each step, but that doesn't show up at typical router or engraver feed speeds.