Low-Temperature Torque Tester
Low-Temperature Torque Tester TT-1478
Low-Temperature Torque Tester TT-1478 complies with ASTM D1478 Standard Test Method for Low-Temperature Torque of Ball Bearing Grease.
This method was devised using greases exhibiting very low torque characteristics at -54°C. It's common for greases of this kind to necessitate testing at such temperatures. For other grease types, testing may be required at temperatures ranging from -73°C to -18°C.
This testing approach has proven valuable in selecting greases for low-powered mechanisms, like instrument bearings in aerospace applications. However, the suitability of this method for other applications with varying greases, speeds, and temperatures should be assessed on a case-by-case basis.
1. Test bearing includes eight 7.9mm balls, separated by a two-piece pressed steel cage, with a standard radial clearance of 0.008 to 0.018mm.
2. Microcomputer temperature controller, with a range from ambient to -70°C.
3. Pt100 temperature sensor, accurate to 0.1°C.
4. Imported compound compressor for low noise operation.
5. Driving motor utilizes a high-speed ratio of 1740/1 to maintain stable rotating speed.
6. Low-temperature tank features dedicated insulating material, ensuring the ambient environment does not affect the inner temperature.
7. Digital display indicates the pull-in torque and running torque.
8. Brass grease cup strictly conforms to standard requirements.
9. Digital display for working time, equipped with alarm function.
10. Stainless steel air bath.
1. Cooling mode: Danfoss double-compressor cooling system.
2. Temperature range: Ambient to -70°C.
3. Timer: Digital display.
4. Rotating speed accuracy: ±1 rpm.
5. Torque test: Digital ergometer.
6. Torque accuracy: 0.1%.
7. Total power consumption: 2000W.
8. Rated voltage: AC 220V, 50Hz. (110V also available)
9. Dimensions: 800*500*1300mm.
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