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Product CatalogueStandard testbeds, proven in production
Eighteen years of testbench manufacturing, distilled into mature standard designs — known specifications, shorter lead times, and hundreds of units already working in the field. Every bench can be optioned with the full Langdi software stack.
Motor & powertrain test benches
From R&D performance stands to production-line end-of-line gates — the deepest bench family in the catalogue, built for e-mobility.
| High-speed motor performance bench | Performance testing for automotive high-speed motors up to 30,000 rpm — power, torque, temperature rise and regenerative braking. |
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| Triple-motor bench (inverted / coaxial) | Reducer and transmission assemblies plus motor reliability, in inverted or coaxial configurations. |
| Shaft-coupled 4WD vehicle motor test system | Simulates dynamic road conditions and driving scenarios for powertrain and vehicle matching verification. |
| Powertrain performance & endurance bench | Complete electric drive units — performance maps and long-run endurance. |
| Back-to-back durability benches | Mutual-loading endurance for motors and complete powertrains — regenerated power circulates, cutting energy cost. |
| NVH test bench | Noise and vibration measurement for high-voltage three-in-one drive systems. |
| End-of-line (EOL) benches | Production-line automated testing — drive motors, hub motors to 60 kW, e-axles (incl. heavy commercial), coaxial reducers. |
| Motor controller test bench | Controllers and inverters validated under real operating conditions on real machines. |
Also in this family: special-purpose and commercial-vehicle motor benches, hydraulic suspension pump systems (up to 4 workstations), EMB (electro-mechanical brake) test stands and axle test rigs.
Robotics test systems
Purpose-built stands for the humanoid and industrial robotics supply chain — precision torque, backlash, efficiency and endurance.
Joint module test bench
Performance and endurance testing for integrated robot joint modules — torque accuracy, backlash, thermal behaviour and 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 testing for robotic dexterous hands.
Intelligent load banks
Configurable resistive-inductive-capacitive loads for gensets, UPS and inverters — computer-controlled and standards-aligned (GB/T 2820, ISO 8528).
High-power RLC dry-type
Combined resistive-inductive-capacitive loads for generator sets and solar inverters.
Marine load banks
Ship propulsion load simulation for diesel-generator stability and shore-power compatibility verification.
Data-centre RC loads
High-voltage resistive-capacitive load boxes for backup diesel generator commissioning.
Anti-islanding test platform
Precision RLC loads verifying grid-tied inverters detect and disconnect during islanding conditions.
Weak-grid test equipment
Simulates low-impedance network conditions to validate inverter grid-adaptive performance.
Rack, portable & mobile
19-inch rack (2U–6U, air- or liquid-cooled), portable multi-unit-parallel, wall-mounted vehicle-integrated and mobile field units.
Starter & alternator test equipment
A mature line of 20+ standard models refined over eighteen years — the product family Langdi's manufacturing reputation was built on.
| LDQ series | Starter performance and durability — no-load characteristics, load traits, braking curves, engine-simulation and engine-mounted endurance with automated reporting. |
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| LKZ series | No-load performance and no-load break-in durability — quick test cycles for pre-load validation. |
| LDK series | Electromagnetic switch performance and simulated endurance — horizontal and vertical formats, multi-unit simultaneous testing. |
| Torsional-vibration simulation (LDQ-6S / LDF-6S) | Servo-based engine torque-vibration simulation for realistic durability assessment — dual-unit simultaneous testing. |
| Specialty stands | Pinion-jitter measurement (LDP-35), one-way clutch testers (LDX-3), relay/switch endurance, and high-low temperature & humidity endurance chambers. |
Environmental durability rigs
Computer-controlled chambers that run the motor under load while the environment attacks it — performance and durability in one test.
Dust chamber
Computer-controlled dust exposure with the machine operating under test.
Rain chamber
Water-spray exposure during powered operation.
Salt-fog chamber
Corrosive salt-spray environment for coastal and road-salt duty.
Mud chamber
Slurry exposure for off-road and agricultural applications.
High-pressure wash (LDF-CS)
High-pressure water-jet simulation at 3,000 or 6,000 rpm under half or full load.
Combined profiles
Sequenced environmental profiles combined with electrical endurance cycles.
Aerospace test systems
High-speed drive stands with real-time inertia simulation — engine-driven generator behaviour reproduced and validated on the ground.
- Aerospace generator test bench — drive frame, high-speed gearbox, torque measurement, specimen cooling and VFD drive as one system.
- Engine simulation — real-time inertia simulation reproduces engine-driven operation for startup verification.
- Endurance runs — long-duration generator operation with full measurement and control coverage.
Standard bench. Modern software.
Every standard testbed can run the same AI-agent-friendly stack as our newest products — a proven mechanical design never has to mean legacy software.
LDEV-X option
Test automation, natural-language test programs and 1000-channel logging on any bench in this catalogue. About LDEV-X →
LDRT option
Real-time control down to 100 µs with EtherCAT and CAN FD, replacing closed legacy controllers. About LDRT →
LD-LMS option
Every bench visible and schedulable from one web dashboard across your lab. About LD-LMS →