Why does the HSTT1eS use a dual PCD coupling (66.0 / 44.0) under 100 Nm Range and such a low Inertia (0.0003 kgm2)?

The HSTT (High Speed Torque Transducer) family is designed for the e-axle sector, heavy drones, aeronautical wind tunnels, and electric turbines. Rotating at 40,000 RPM would disintegrate any standard torsion ring due to sheer centrifugal force. Atesteo compacts this gauge by creating a stepped Dual PCD flange (66 or 44 mm) that secures the rotor without flexing it. Being so minuscule, its inertia is a mere 0.0003 kg·m², enabling microscopic ballistic testing where a greater mass would negate the test's accuracy and shatter the vibration test bench.

Can the optical reader guarantee the accuracy class when subjecting the sensor to 40,000 RPM under EMI magnetic fields?

Absolutely. In fact, it's the mandatory standard. The HSTTeS variant is purely optical (transilluminated light). The exclusion of magnetic and galvanic rings eliminates friction and parasitic heating at 40k RPM, while also immunizing the readings against the strong electromagnetic pulses (dV/dt) produced by the high-frequency test inverters required to scale electric motors to these terminal speeds.

Torque Sensor HSTT1eS 50/100 Nm | 40,000 RPM | Aeronautical Testbed

High-Speed Telemetry (Optical) | Range 50 – 100 N·m | Peak 40,000 RPM | Dual PCD Flange 66.0/44.0 mm | Inertia 0.0003 kg·m²

Manufacturer: CENSORED
Category: Torque torque, SENSORS

The HSTT1eS (High Speed Torque Transducer) series represents the pinnacle of ballistic micrometry within the Atesteo catalog. Designed specifically for testbeds of super-high-speed electric motors, next-generation e-axle turbines, and aerospace shafts, this minuscule device is capable of auditing torque vectors of 50 to 100 Nm while rotating at an astonishing base speed of 30,000 RPM, pushing its structural ceiling to 40,000 RPM in extended test configurations. To withstand such centrifugal load without disintegrating, its rotor is compressed into a concentric dual PCD flange mount (66.00 and 44.00 mm), reducing its gravitational footprint to a near-zero rotational inertia of 0.0003 kg·m².

Belonging to the "eS" family, its strain gauge conversion core relies on galvanic bearing-free optical (luminous) telemetry. This architectural decision eliminates parasitic overheating due to friction, guaranteeing a stable test temperature even under ballistic accelerations (Relative Zero Deflection Class ≤±0.05%). The result is a high-performance transducer that delivers clean readings, immune to electromagnetic noise from adjacent mega-inverters at stratospheric frequencies. Integrate this marvel of German miniaturization into your test bench by exploring the Torque Sensor category ultrafast, or start designing your e-axle propulsion array from the Guemisa Homepage.

Properties

Nominal Metrological Range (Nm)	50 / 100 N·m (Micro-Torsional Precision)
Ballistic Rotational Management	30,000 RPM Base / 40,000 RPM Peak Optional
Dual Concentricity Diameter PCD	ISO Flange 66.00 mm / 44.00 mm (Rotor 82/58 mm)
Structural Inertia Density	0.0003 kgm² (Load-Free Antifriction Profile)
Class Precision (High Speed)	≤ ±0.05% (Shielded against Increasing Centrifugal Force)
Flight Reading Technology	Optical Telemetry Ring (Galvanic Isolation)
EMI Isolation (Inverter Testing)	Total Iron Resilience to Magnetic Noise dV/dt
Operating Thermal Tolerance	10…60 °C (Relative Zero Signal Deviation)
Main Application E-Axle	Turbines / Electric Motors / Ultra-fast Aeronautics