Full specification
| Parameter | Value |
|---|---|
| Frame / size | Φ52 × 55.5 mm |
| Ratio | 101:1 |
| Rated torque @2000 rpm input | 5 N·m |
| Average output torque | 8.9 N·m |
| Start–stop peak | 11 N·m |
| Instantaneous max | 25 N·m |
| Weight | 375 g |
| Supply voltage | 24–48 V |
| Encoder | Absolute, integrated |
| Comms | CAN, per configuration |
Source: EYOU (Yiyou Robot) selection manual 2026.08, p. 9. Figures verified November 2026 — confirm the exact variant against the datasheet issued with your order.
When this is the right choice
- 25 N·m instantaneous at 375 g. That is a 5× margin over rated, which is what lets a wrist survive a mis-commanded move without a torque sensor.
- 24–48 V. The first frame in the series that runs on a 48 V humanoid bus and on a 24 V mobile platform without a converter.
- Φ52 is the practical minimum for a cable passage. Small enough for a forearm, big enough that motor cables can route through the axis.
- Two-thirds the mass of PHU11H-52 for the same 5 N·m rated figure — PHA is the lightweight cut, PHU is the instrumented one.
When it is the wrong choice
- No dual encoder and no force control. PHA is a position joint; if the axis has to sense contact you want PHU, which publishes ±0.5% FS at 8 kHz.
- Rated figure is quoted at 2000 rpm input. At a lower input speed the continuous torque drops; size on 5 N·m only if your speed envelope matches the catalogue condition.
- Not a knee or ankle. Shock loads and back-driving dominate those axes — the PHA gear set is not built for them.
Alternatives at a similar level
- EYOU PHA14H-101-C — 9.6 N·m at 645 g — one frame up
- Tongchuan TCHL-11 — Comparable torque class with brake and sensor variants
- EYOU PHU11H-52 — Same frame, dual absolute encoder and force-control option
Quote this model
Model, quantity and destination is enough to start — we come back with price, availability and the datasheet.
PHA11H-101-C FAQ
PHA11H or PHU11H at the same Φ52?
Same rated torque, different instrument. PHA11H is 375 g with a single encoder; PHU11H-52 is heavier, adds a dual absolute encoder and can be ordered as a force-control build. Pick PHA when the axis only needs position, PHU when it has to feel.
Can it run on 24 V?
Yes — the frame is specified 24–48 V, so a 24 V mobile platform and a 48 V humanoid bus both work. Output speed and torque at 24 V are lower; tell us the rail and we size against it.
How long does it take to ship?
Confirmed per order at quotation — the connector build and the cable length change it, and so does what the factory has ready. The quotation carries the date.
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