T85H90-5504 Nema-34 4wire Stepper Motor (60Kg-Cm)
NEMA 34 stepper motor, 90mm body, 5.5 A/phase, 5.88 Nm / 60.0 kg-cm holding torque, 4 leads.
Overview
The T85H90-5504 is a NEMA 34 stepper motor with a 90mm body, wired with four fixed lead wires rather than the switchable eight-wire arrangement used on the T85H65-2808/T85H80-4208/T85H118-4208.
It draws 5.5 A per phase (0.9 ohm, 6.0 mH) and holds 5.88 Nm / 60.0 kg-cm at standstill. That current needs a drive with real headroom above it - a Tstep-168X (1.2-8.0 A) is the natural fit; a Tstep-117X (up to 7.0 A) would be running close to its ceiling.
Four lead wires bring out one connection per phase, fixed in series at the factory - simpler wiring, without the series/parallel option the eight-wire T85H motors offer.
Where more torque is needed at even higher current, the T85H156-6204 draws 6.2 A for 12.2 Nm / 124.0 kg-cm in a longer body. Both stay within the same NEMA 34 flange as the eight-wire T85H motors, so the choice comes down to torque and wiring flexibility rather than fitment.
Supplied by Tiny Controls in India.
Specifications
| Flange size | 85 mm (NEMA 34) |
|---|---|
| Phase current | 5.5 A |
| Holding torque | 5.88 Nm \ 60 kg-cm |
| Phase resistance | 0.9 Ω |
| Phase inductance | 6.0 mH |
| Lead wires | 4 |
Questions
Why 4 leads instead of the 8-wire switchable arrangement most of your T85H motors use?
Simpler wiring, fixed in series at the factory — it doesn't offer the series/parallel option the eight-wire T85H motors do, but there's less to configure.
What drive does 5.5A need?
A Tstep-168X (1.2-8.0A) — a Tstep-117X (up to 7.0A) would be running close to its ceiling.
Is there more torque at even higher current?
Yes — the T85H156-6204 draws 6.2A for 12.2 Nm / 124.0 kg-cm in a longer body.
Does this fit the same mount as the 8-wire T85H motors?
Yes — same NEMA 34 flange throughout, so the choice comes down to torque and wiring flexibility, not fitment.
The name says "60Kg-Cm" — does that match the actual spec?
Yes — 5.88 Nm / 60.0 kg-cm holding torque, confirmed.