Internal Mixer 350 SX: Material development & optimization for elastomers

Intended use

The Internal Mixer 350 SX is specially designed for use in the rubber and caoutchouc industry.
Use the powerful measuring mixer for compounding and preparation tasks or for material testing.

Internal Mixer 350 SX

  • Enhanced material feeding:
    Through pneumatic loading chute

  • Easy material removal:
    Due to jaw-like opening

  • Produktion-like analyses:
    Thanks to intermeshing blades

  • Leakage protected:
    Special sealing avoids leakage of fine-particle fillers

  • Expanded range of applications:
    Max. 500 Nm – developed for
    high torque applications


You have a specific type of problem or need a special configuration?

Contact us

We will gladly answer your questions. Please complete all information in the fields below. We will contact you as soon as possible.



I accept the terms of the privacy policy.


All fields marked with * are required.

Analyze rubber and rubber compounds practically

Intermeshing blades provide optimum mixing, blending and kneading. The easily accessible mixing chamber makes it very easy to remove the sample material: To do this, you open the mixer block from the center, like a jaw. Special seals prevent the leakage of fine-particle fillers such as carbon black or silicate.

When metering your formulation ingredients, you benefit from the large net mixer chamber volume. The 350 SX internal mixer is supplied on a special docking station.

Comprehensive software packages are available for material testing, such as the determination of the Black Incorporation Time (BIT).

The measuring principle is based on making visible the resistance the sample material opposes to the rotating blades. The corresponding torque moves a dynamometer out of its zero position.

In compliance with the existing standards and test specifications, a typical ‘Plastogram®’ (torque and stock temperature vs. time) is recorded for each sample material.

The measured data are displayed numerically as a table and/or graphically as a diagram during the measurement on the monitor and can be printed and stored.

Volume of mixer bowl:
318 cm3

Sample weight:
200 - 400 g


max. 500 Nm

Speed ratio of the idle blades:

Operating temperature:
max. 250 °C

Dimensions (W x H x D):
1000 x 2040 x 640 mm with docking station

Net Weight:
approx. 170 kg with docking station

Brochure Internal mixer 350 SX