Full specification
| Parameter | Value |
|---|---|
| Frame / size | Φ120 × 126 mm |
| Ratios | 120:1 / 160:1 |
| Rated torque @2000 rpm input | 124 / 169 N·m |
| Average output torque | 197 / 267 N·m |
| Start–stop peak | 270 / 459 N·m |
| Instantaneous max | 848 N·m |
| Weight | 4,080 g |
| Encoder | Dual absolute encoder |
| Built-in torque sensor | Not available — RHU -F stops at RHU25L-80 |
Source: EYOU selection manual 2026.08, pp. 6–7. Figures verified November 2026 — confirm the exact variant against the datasheet issued with your order.
When this is the right choice
- Knee and hip pitch on a 50–70 kg platform. 169 N·m rated at 160:1 in a Φ120 frame.
- 848 N·m instantaneous ceiling gives a leg axis headroom for landing and for the first instant of an unexpected contact.
- Half a kilogram lighter per axis than RHU40H — matters when there are two legs.
- Same family, same drawings as the smaller RHU frames, so the design vocabulary carries over.
When it is the wrong choice
- Force-controlled knees. No built-in sensor at this frame — you need an external sensor plus the bracket and the calibration that goes with it.
- Arms. 4.08 kg is leg mass, not arm mass.
- Ankles. Harmonic drive in an impact path; consider a cycloidal or planetary frame instead.
Alternatives at a similar level
- EYOU RHU40H-130 — 248–363 N·m at 5.82 kg with a Φ22 bore
- EYOU RHU25L-80 — 47–110 N·m at 1.27 kg — the last frame with built-in force control
- Crabnova CE-RBV3-R102-161 — 147–350 N·m with brake and 350 N·m sensor, 2.60 kg
- Tongchuan TCHL-32 — 169–411 N·m at 3.30 kg with sensor option
Quote this model
Model, quantity and destination is enough to start — we come back with price, availability and the datasheet.
RHU32H-120 FAQ
120:1 or 160:1 for a knee?
A knee wants the higher ratio: 160:1 gives 169 N·m rated and 459 N·m start–stop against 124 and 270. The instantaneous ceiling is the same 848 N·m either way.
How do I get torque feedback on this axis?
Externally. RHU-F stops at RHU25L-80, so a force-controlled knee here means an in-line torque sensor plus a bracket, and we spec both together with the module.
Is it a cup or hat flexspline?
EYOU confirmed cup type for the 40-size frame; for RHU32H we confirm per order rather than assume the same answer.
How long does it take to ship?
Confirmed per order at quotation — this frame is built to order more often than the small ones.
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