EYOU · Joint modules

EYOU RHU17L-60 harmonic joint module

A Φ60 joint weighing 521 g with up to 27 N·m average output and optional force control. The size that fits a humanoid wrist or a small elbow without the 1 kg jump to the next frame.

Full specification

ParameterValue
Frame / sizeΦ60 × 66 mm
Ratios50:1 / 100:1
Rated torque @2000 rpm input11 / 16 N·m
Average output torque18 / 27 N·m
Start–stop peak23 / 37 N·m
Instantaneous max48 / 71 N·m
Weight521 g
EncoderDual absolute encoder
Force control-F version: ±0.5% FS, 0.1% FS resolution, ≥5 kHz sampling
Naming ruleRHU <reducer size><L>-<module OD> → 17-size reducer, light torque, 60 mm

Source: EYOU selection manual 2026.08, pp. 6–8. Figures verified November 2026 — confirm the exact variant against the datasheet issued with your order.

When this is the right choice

  • Wrist-sized with real torque. 27 N·m average output at half a kilogram.
  • Force control available at a frame most people expect to be sensor-less.
  • 71 N·m instantaneous gives headroom for the peak of a fast wrist move.
  • Same motor family as the rest of RHU — spare parts and firmware tooling carry across the build.

When it is the wrong choice

  • Elbows carrying a heavy forearm. 37 N·m start–stop is the ceiling; RHU20L or TCHL-17 double it.
  • Vertical axes that must not drop unless you confirm the brake option for this frame first.
  • High-cycle industrial use. A cheaper planetary frame with more backlash will outlast it.

Alternatives at a similar level

Quote this model

Model, quantity and destination is enough to start — we come back with price, availability and the datasheet.

Quoting for RHU17L-60

One business day reply. Prefer email? [email protected].

RHU17L-60 FAQ

Is 521 g light enough for a humanoid forearm?

Yes for a forearm pitch or roll on a mid-size platform. If the wrist carries a 1 kg hand, check the combined inertia before choosing the 50:1 ratio.

Can I get it with a brake and force control together?

The -F denotes force control; brake availability is a separate option confirmed per frame. Tell us the axis and we will confirm which combination the factory builds.

What is the difference from PHU17H-80?

PHU is the general-purpose PHU series with a different envelope and -F meaning a flange; RHU is the humanoid series with the large bore and the force-control suffix. Do not mix the two suffixes.

How long does it take to ship?

Confirmed per order at quotation.

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