V-MV 3000 Variable Mooney Viscometer

The variable rotor speed Mooney Viscometer achieves more innovative Mooney values for greater R&D and production purposes.

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V-MV 3000 Variable Mooney Viscometer

The V-MV 3000 applies variable shear rates for a more advanced and complete characterization of molecular and processing properties of rubber specimens. This is made possible by the latest direct servo drive technology mounted in a high-strength industrial load frame. The superior design enables unbeaten data accuracy and test result precision.

Advanced Features and Applications

  • Rugged 3000 series machine frame for the most stable readings in laboratories or the harshest production environments
  • Variable Rotor Speed for fully dynamic test sequencing
  • 0 to 50 turns per minute, 0.01 steps (0 to 5.25 radians / second)
  • Includes state-of-the-art direct servo drive technology
  • Lower radial V-Groove die – accommodates large or small serrated rotor
  • Fanless and sealed housing prevents debris from entering critical systems
  • Equipped with industry standard programmable logic controller for reliable operation and sampling rate
  • Internal diagnostic and condition monitoring routines
  • Includes MonControl LIMS instrument management software

View Applications

  • Mooney Viscosity

    The Mooney Viscosity test is the most popular test method for characterizing polymers and uncured rubber materials. Defined by international standards, the sample material is preheated for a defined period in a closed die cavity, then sheared by the embedded rotor at a constant rate. The Mooney Viscosity is recorded and data is automatically calculated at predefined time and viscosity points.

    MonTech Mooney Viscometers offer superior precision and repeatability, providing the user with reliable data and making it easy to differentiate between different types and grades of polymers in order to ensure a high processing consistency.

    Mooney Viscosity
  • Mooney Stress Relaxation

    While Mooney Viscosity testing only provides information about the flow/viscosity of polymers and rubber compounds, stress relaxation testing assesses elastic material behavior.

    Once the Mooney Viscosity test is completed, the rotor is stopped within 5 milliseconds and the torque decay is observed and recorded. Once the stress relaxation is completed, the slope-intercept and regression coefficient are calculated, providing excellent correlations in reference to polymer branching and processing.

    Mooney Stress Relaxation
  • Mooney Scorch

    Mooney Scorch tests determine onset of vulcanization (also known as scorching behavior) in rubber compounds. This provides essential data for designing/controlling production processes and verifying material consistency.

    Every MonTech Mooney Viscometer offers full Mooney Scorch and Delta Mooney testing capabilities. These capabilities feature a comprehensive selection of data points such as initial Mooney viscosity, minimum viscosity, scorch times and scorch viscosities.

    Mooney Scorch
  • Mooney Viscosity at Shear Rates and Temperatures

    MonTech Variable Mooney Viscometers offer full dynamic testing capabilities, allowing measurement of viscosity at variable shear rates and temperatures matching process conditions.

    Non-isothermal sequences, variable rotor speed profiles, and step-relaxations can easily be programmed and executed. This allows a detailed and complete understanding of the polymer behavior.

    Mooney Shear Rates and Temperatures
Pneumatic Cooling System
Pneumatic Cooling System
Rotor die assembly and drive system
Rotor die assembly and drive system

Technical Specifications


ISO 289:2005
ASTM D 1646 | ASTM D 3346
DIN 53523
AFNOR T43-00/005
BS 903: Part 58 | BS 1673
GOST 10722-76
JIS K6300
TGL 25-689

Die Configuration / Rotor

According to international standards
large (⌀ 38.1 mm) and small (⌀ 30.48 mm) Rotor

Force Measurement

High precision in-line torqe transducer

Closing Force

11.5 kN

Rotor Speed

0 to 50 turns per minute, 0.01 steps (0 to 5.25 radians / second)

Stress Relaxation

According to ISO 289:2018, DIN 53523 Part 4

Torque Range

0.01 to 230 MU

Sample Volume

Two specimens having a combined volume of 25 cm3

Temperature Control System

Ambient to 232 °C, precision +/-0.03 °C, digital,
microprocessor controlled

Temperature Check System

Recordings of the temperature gradient on the screen,
PID microprocessor controlled


Fully automatic by built-in calibration weights, software-guided

Measured Data

Mooney - value (MU)
Temperature (°C, °F)
Time (min - min / min - sec / sec)

Data Interface

Ethernet (10/100 MBit), USB (int.), CF card (int.), RS232 (opt.)

Data Points

Over 3500 data points available, including:
Initial viscosity, ML / ML 1+X, Y+X+Z, scorch viscosities and cure times, stress relaxation (log-log), slope, intercept, regression coefficient, multi-zone stress relaxation


min. 4.5 Bar / 60 psi


200-240 V, 6 Amps, 47-63 Hz, Single phase

Dimensions (H x W x D)

59.84 in x 26.77 in x 23.62 in (152 cm x 68 cm x 60 cm)

Instrument Options

- Instrument control panel with 5" touchscreen display and printer
- Easy access and encapsulated electronic system
- Rotor detection
- Reinforced drive shaft and rotor to 300 MU
- Double channel forced air cooling system
- Low-temperature cooling system MCool 10
- M-VS 3000 constant volume sample cutter

Advanced Modules

  • Pneumatic Cooling System
  • Instrument Control Panel

Pneumatic Cooling System

This pneumatic air cooling system cools both dies separately using independent PID-controllers, rapidly cooling the instrument from higher to lower testing temperatures. When using non-Isothermal and RPA operation modes this system enables cooling at any point during the test.


  • • Allows test sequences to follow precise cooling ramps and steps
  • • Conducts friction heat away from the sample when testing at high shear rates
  • • Reduces non-productive time of the instrument and operator by shortening stabilization time
  • • Air lines have quick connects at each platen, and exhaust through the platen assemblies
  • • Air is supplied by an independent regulator on the back of the machine

Instrument Control Panel

The 5“ Color-Touchscreen allows the machine to be operated from a remote computer or completely standalone for simple quality control testing.

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