TBS 2100E HTHS Viscometer

High-Temperature, High Shear Rate Rotational Viscosity
Test Methods
  • ASTM D4683 | ASTM D6616
  • CEC L-36-90
  • IP 370
  • JPI-5S-36-03
  • Reference technique for ASTM D4741 and D5481

The Tapered Bearing Simulator (TBS) Viscometer is a rotational viscometer for measuring high temperature, high shear rate (HTHS) viscosity of engine oils over a broad shear rate (50,000 to >7 million sec–1) and temperature range (40°C to 200°C).

Developed in 1979 and under several patents, the TBS Viscometer became the world’s first high shear viscometer. It remains the modern benchmark ‘referee’ instrument for HTHS viscometry due to its innovative measurement technique, robust design, and notable operational upgrades.

Through several noteworthy instrument advancements, the TBS brings a heightened level of operator ease and productivity for both research and routine laboratory HTHS testing. These innovations include two optional Full-Automation modes, constant temperature control, a 12-step motor for simple adjustment of shear rate, quick ‘chase-flush’ sample exchange, and complete computer control for automatic calibration, sample injection and data reporting.

  • Applies a constant, linear shear rate profile continually to the fluid. An absolute viscometer where ‘true’ shear rate is calculated from known dimensions and speed of rotation. No need for shear rate correction or the possibility of erroneous results due to clogged capillaries.
  • Full-Automation Package with 42-position AutoSampler – simply load samples, input desired sample information, start the automation program, and return to retrieve results.
  • The Full-Automation Manual Injection Package (with Laptop) incorporates specialized software for automated Rotor/Stator adjustments and instrument calibrations.
  • Capable of analyzing both ‘fresh’ and ‘used’ oils.
  • Single sample testing with no requirement for duplication or averaging of sample data.
  • ‘Chase-Flush’ sample replacement technique – no cleaning solution injections between sample runs.
  • Adjustable temperature range from 40°C to 200°C with an optional cooling device.
  • Thin-Film Stator heating provides constant and precise temperature control with no external hot oil bath.
  • Excellent research tool with broad shear rate range capability via 12 rotor speed selections and Rotor/Stator depth relationship adjustment (50,000 to >7 million sec-1).
  • TBS Reference Oil is available for operation at temperatures of 80°, 100°, and 150°C.
HTHS Newtonian Reference OilsHTHS Non-Newtonian Reference OilsAdditional TBS Reference Oils
R-100 | RL 236NNR-03 | RL 240BIF-03 (Break-In Fluid)
R-200 | R-2200 | RL 241NNR-10Idling Oil
R-300 | R-2300NNR-80 
R-350 | R-2350 | RL 242  
R-400 | RL 238  
R-450 | R-2450 | RL 239  
R-500 | RL 237  

For a complete listing of part numbers and available container sizes of Tannas Reference Oils, please review the Tannas Reference Oils & Catalysts Parts List.

Visit our Certified Reference Materials page to download SDS sheets or Oil Certificates.

300100: Tapered Bearing Simulator (TBS®) Viscometer, TBS 2100E-F, 120V, 50/60 Hz Power
300200: Tapered Bearing Simulator (TBS®) Viscometer, TBS 2100E-F, 220V, 50/60 Hz Power

Full Automation Package Option:
300850: Full-Automation Package-T42C
300199: TBS 2100 F-2 Auto Software – Manual Injection or T42C

Spare Parts & Consumables:
200924: 3005USB DAQ
300124: AutoSampler Plastic Rack (Holds 21 samples)
300130: Reference Oil Bottle Set, AutoSampler (6 pack)
300175: Shield Enclosure – TBS 2100
300252: Conventional Rotor/Stator Set (Calibrated)
300277: Modified R/S Assembly W/ Housing
300263: RTD Assembly (Temperature Sensor)
300274: Thermal Cut-off Fuse Assembly
300288: Stator Housing Assembly – 2100E (w/ Lids)
300308: Motor Control Board with 18″ Rib Cage
300315: Siamese Collet Assembly – TBS 2100
300320: Motor Assembly – TBS 2100
300477: Stator Housing Lids
300493: Alignment Tool – TBS 2100
300512: O-Ring: Stator – Stator Housing (5 pack)
300513: Syringe-50cc, (20 pack) – Disposable
300520: O-Ring: Stator – Stator Support (5 pack)
300319: Collet Assembly Tool
300547: Filter Holder
300569: Glass Syringe-50cc
950905: PI Film Tape (108 FT)

Accessories for Lower-Temperature Operation:
300277: Modified Rotor/Stator Assembly with Housing (for 40°C to 200°C)
300255: TBS Chiller, 100V, 50/60Hz, includes bath, connection fittings and lines
300249: TBS Chiller, 110V, 60Hz, includes bath, connection fittings and lines
300250: TBS Chiller, 220V, 50Hz, includes bath, connection fittings and lines
300242: TBS Chiller, 220V, 60Hz, includes bath, connection fittings and lines

Up to 42 samples can be tested with the TBS AutoSampler.

The Full-Automation Package with AutoSampler incorporates specialized software for automated Rotor/Stator adjustments and instrument calibrations.

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TBS 2100E HTHS Viscometer


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