Spline Driven Transformer Coupled Torque Sensor Model T258

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Spline Driven Transformer Coupled Torque Sensor Model T258

  • Meets AND 20002 & 10262 requirements
  • High stiffness, low inertia, and high bending moment capability
  • On-board shunt calibration circuit
  • Rated speed 35,000 rpm
  • Internal zero velocity speed sensor
  • (optional)
  • SAE 4340 alloy steel construction with satin nickel finish

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The T258 rotary transformer torque sensor with a spline drive and flanged housing meets the mounting requirements of Army-Navy standards AND 20002 and AND 10262. The T258 has been field proven in high speed aircraft fuel pump test stands and is rated to operate at speeds up to 35,000 RPM over extended periods with standard grease pack bearings. The T258 requires the use of AC carrier strain gage signal conditioning electronics such as SensorData’s i200. The optional zero velocity speed sensor is installed inside the T258 housing. Interconnecting cable assemblies are available as an option. SensorData will provide in-house calibration of the T258 with customer-supplied electronics for a fee.

Additional information


Small, Medium, Large, X-Large


Rated Capacity100, 200, 500, 1K, 2K lb-in
Rated Speed 35,000 rpm
Nonlinearity0.05% of rated output
Hysteresis0.05% of rated output
Non-repeat ability0.02% of rated output
Rated Output, typical2 mV/V
Zero Balance+/-0.5% of rated output
Temperature Range, operating-20 to +200 F
Temperature Range, compensated+68 to +170 F
Temperature Effect on Output0.001% of load/F
Temperature Effect on Zero0.001% of rated output/F
Bridge Resistance, typical350 ohms
Excitation2.8 to 5 VAC rms, 3 kHz to 5 kHz
Insulation Resistance, bridge to case>5000 megohms at 50 VDC
Input Voltage, speed sensor, Vcc (optional) (1)4.5 to 24 VDC
Maximum Load, safe (2)200% of rated capacity
Maximum Load, ultimate (3)400% of rated capacity
Bending Moment Capability, measured from rear flange mounting pad to CG of unit under test120,000 lb-in
Number of Bridges1


SAE 4340 alloy steel with satin nickel finish