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L2-4. HFA Actuator Architecture Hub

One Actuator Platform. Three Motor Architectures.
HFA Product Hub (HFA-A / HFA-O / HFA-I)

Based on common 3K Compound Gear and Smart Drive platforms, we deliver optimal motor architectures tailored to torque, speed, and packaging requirements.

HFA A (Axial Flux)

Ultra-high torque density pancake structure for shoulder and hip joints

HFA I (Inner Rotor)

Ultra-slim structure with minimal rotor inertia for wrist and neck joints

L2-4. HFA Product Hub (HFA-A / HFA-O / HFA-I)

One Actuator Platform. Three Motor Architectures.

Based on common 3K Compound Gear and Smart Drive platforms, we deliver optimal motor architectures tailored to torque, speed, and packaging requirements.

HFA-A Series Ø82 x L60.5 mm
HFA80A-81P51 Fig. Cutaway

HFA80A-81P51

Compact Joints / Small Mobility

An 800g lightweight structure delivering 81Nm peak output for space-constrained upper-body joints.

Nominal Tq
27Nm
Peak Tq
81Nm
Max Speed
54rpm
HFA-A Series Ø97 x L68.4 mm
HFA90A-165P51 Fig. Cutaway

HFA90A-165P51

Shoulder R, Elbow, Hip Yaw

A mid-diameter joint solution for shoulder roll and elbow, where agility and sustained torque density both matter.

Nominal Tq
55Nm
Peak Tq
165Nm
Max Speed
54rpm
HFA-A Series Ø97 x L68.4 mm
HFA90A-102P30 Fig. Cutaway

HFA90A-102P30

Hip R/Y, Ankle

93 rpm speed and a 30:1 gear ratio precisely coordinate ground clearance and angle changes during multi-legged walking.

Nominal Tq
34Nm
Peak Tq
102Nm
Max Speed
93rpm
HFA-A Series Ø108 x L74.1 mm
HFA100A-300P51 Fig. Cutaway

HFA100A-300P51

Shoulder P/Y (Shoulder Pitch/Yaw)

A 100Nm-class axial-flux HFA actuator integrating an ultra-high-density AFPM structure with a 3K compound gear for high-load upper-body joints.

Nominal Tq
100Nm
Peak Tq
300Nm
Max Speed
54rpm
HFA-A Series Ø128 x L80.0 mm
HFA120A-255P22 Fig. Cutaway

HFA120A-255P22

Waist P/R (Waist Pitch/Roll)

A dedicated waist module with 127 rpm fast rotation speed and 255Nm peak torque for upper-body power balancing.

Nominal Tq
85Nm
Peak Tq
255Nm
Max Speed
127rpm
HFA-A Series Ø150 x L100.0 mm
HFA150A-348P22 Fig. Cutaway

HFA150A-348P22

Hip Pitch, Knee

Delivers the most powerful peak torque in the full-body humanoid at 348Nm, absorbing knee and hip landing impact.

Nominal Tq
116Nm
Peak Tq
348Nm
Max Speed
127rpm
HFA-I Series Ø52 x L60.0 mm
HFA22I-11C30 Fig. Cutaway

HFA22I-11C30

Micro Joints / Multi-Finger Grippers

A 35g ultra-compact, ultra-lightweight module for finger, micro-gripper, and gaze-camera gimbal joint control.

Nominal Tq
0.5Nm
Peak Tq
1.5Nm
Max Speed
65rpm
HFA-I Series Ø62 x L68.65 mm
HFA60I-60P51 Fig. Cutaway

HFA60I-60P51

Wrist, Neck

An ultra-light 560g, Ø62mm compact body optimized for fast motion control of end wrist and neck joints.

Nominal Tq
20Nm
Peak Tq
60Nm
Max Speed
52rpm
HFA-I Series Ø74 x L80.0 mm
HFA70I-75P51 Fig. Cutaway

HFA70I-75P51

Wrist Roll / Neck Pitch

A 730g HFA wrist module for precision robot tasks requiring finely tuned acceleration response.

Nominal Tq
25.6Nm
Peak Tq
75Nm
Max Speed
60rpm
HFA-I Series Ø74 x L87.0 mm
HFA70I-60P30 Fig. Cutaway

HFA70I-60P30

Ultra-Fast Precision Task Joints

Optimized for high-speed repetitive pick-and-place motion with 110 rpm fast response.

Nominal Tq
20.8Nm
Peak Tq
60Nm
Max Speed
110rpm
HFA-I Series Ø90 x L88.8 mm
HFA90I-150P51 Fig. Cutaway

HFA90I-150P51

Upper-Body Precision Coordination Joints

A 1.42kg, Ø90mm inner-rotor structure delivering both high-speed inertial motion and fast acceleration response.

Nominal Tq
60Nm
Peak Tq
150Nm
Max Speed
60rpm
HFA-I Series Ø90 x L88.8 mm
HFA90I-210P70 Fig. Cutaway

HFA90I-210P70

High-Reduction Precision Motion Joints

A 70:1 gear ratio for assembly and precision handling joints requiring high-precision torque transfer.

Nominal Tq
70Nm
Peak Tq
210Nm
Max Speed
42rpm
HFA-O Series Ø120 x L63.0 mm
HFA120O-291P51 Fig. Cutaway

HFA120O-291P51

High-Load Lower-Body Joints

The outer-rotor structure's powerful effective-radius torque supports heavy lower-body loads with no inertial gap.

Nominal Tq
97Nm
Peak Tq
291Nm
Max Speed
39rpm
HFA-O Series Ø120 x L70.0 mm
HFA120O-273P30 Fig. Cutaway

HFA120O-273P30

Dynamic Lower-Body Walking Joints

A mid-sized lower-body module achieving 66 rpm dynamic walking response with a 30:1 gear ratio.

Nominal Tq
91Nm
Peak Tq
273Nm
Max Speed
66rpm
HFA-O Series Ø120 x L70.0 mm
HFA120O-200P22 Fig. Cutaway

HFA120O-200P22

High-Speed Lower-Body Balance Joints

A fast-response Outer Rotor HFA actuator with 90 rpm rotation speed that catches rapid loss of balance.

Nominal Tq
66Nm
Peak Tq
200Nm
Max Speed
90rpm
HFA-O Series Ø120 x L63.0 mm
HFA120O-180P30 Fig. Cutaway

HFA120O-180P30

Mid-Size Outer Rotor Joints

A standard 120O HFA actuator delivering 180Nm peak torque in a compact 1.8kg body.

Nominal Tq
60Nm
Peak Tq
180Nm
Max Speed
66rpm
HFA-O Series Ø180 x L80.0 mm
HFA180O-450P30 Fig. Cutaway

HFA180O-450P30

Ultra-High-Load Hip / Locomotion Joints

The flagship module dedicated to the most demanding industrial humanoid lower-body and hip joints, with 450Nm max output.

Nominal Tq
160Nm
Peak Tq
450Nm
Max Speed
50rpm
HFA-O Series Ø180 x L80.0 mm
HFA180O-350P22 Fig. Cutaway

HFA180O-350P22

Ultra-Fast, High-Load Hip Joints

A large-diameter, Ø180mm Outer Rotor HFA actuator supporting 68 rpm high-speed dynamic output.

Nominal Tq
119Nm
Peak Tq
350Nm
Max Speed
68rpm
Datasheet Specs

HFA100A-300P51

Motor Topology AFPM (Axial Flux Pancake)
Recommended Drive C_0750
Gear Ratio 51:1
Module Weight 2.16 kg
Key Architecture Features