2. Products
  3. Accessory
  4. Various rotors
  5. Cone rotor


Various rotors

Cone rotor

Various optional cone rotors are available depending on the viscosity value of the sample to be measured.

In contrast to the 1°34′ x R24 cone rotor that comes standard, the 3° cone is for measuring higher viscosity samples, and the 0.8° cone is for measuring lower viscosity samples. Choose.
Also, since some “3° cones” have small diameters, the higher the viscosity, the smaller the diameter of the cone rotor selected.

The cone-plate viscometer is a viscometer that can specify the “shear rate”, but the shear rate is determined by the shear rate coefficient and rotation speed of the cone rotor used.

Shear rate = Shear rate factor × Rotational speed

The shear rate coefficient varies depending on the angle of the cone rotor as shown below.
(Independent of cone rotor diameter)

Cone rotor angle Shear rate factor
0.8° 7.5
1°34’ 3.83
3° 2.0

Cone rotor type

Please note that the required sample volume varies depending on the angle and diameter of the cone rotor.

Measurement upper limit