Prove every joint before it walks

Joint modules, harmonic reducers and dexterous hands — the components that make a humanoid work, tested for torque accuracy, backlash, efficiency and life on dedicated Langdi benches.

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The challenge

Humanoids put the supply chain under a microscope

Dozens of joints per robot

Every humanoid carries 30+ actuators. A small per-joint failure rate becomes a whole-fleet reliability problem — component-level test is non-negotiable.

Precision is the product

Transmission accuracy, stiffness and backlash of a harmonic reducer decide whether a hand can hold an egg. Measuring them takes metrology-grade benches.

Scaling from lab to line

Prototype validation and production quality gates need the same measurements at very different throughput — one toolchain should cover both.

What we test

The moving parts of a humanoid

Joint modules — torque accuracy, backlash, thermal behaviour, efficiency maps and life cycling of integrated actuators.
Harmonic reducers — transmission accuracy, stiffness, no-load running torque, efficiency and durability.
Dexterous hands — grip force, finger-joint performance and repeatability.
High-speed frameless motors — performance and temperature rise on high-speed motor stands.
Controllers & drives — servo drives validated under real load on real joints.

The Langdi stack for robotics

Metrology-grade benches, modern software

LDRT — precision control

Deterministic control down to 100 µs for torque ripple and backlash measurement that older PLC-based rigs can't resolve. About LDRT →

LDEV-X — automation

Life-cycle endurance programs described in natural language; every cycle logged, every anomaly flagged. About LDEV-X →

LD-LMS — fleet testing

Run a wall of joint benches as one lab — scheduling, live status and traceable results per serial number. About LD-LMS →

Proven hardware

Standard benches for robotics

From the standard testbed catalogue — plus high-speed motor stands from the motor family.

Joint module test bench	Performance and endurance of integrated robot joints — torque accuracy, backlash, thermal behaviour, life cycling.
Harmonic reducer test bench	Transmission accuracy, stiffness, efficiency and durability for harmonic drives.
Dexterous hand test bench	Grip force, finger-joint performance and repeatability for robotic hands.
High-speed motor stands	Performance and temperature rise for high-speed frameless and servo motors.

Beyond the bench

Have us build it — or build yours

Complete test solutions

A joint-module lab designed end to end — benches, software, fixtures and commissioning. Learn more →

Customised testbeds

Novel actuator or unusual form factor? Purpose-built rigs to your specification. Learn more →