IKA S 50 N - G 45 G - ST mixing tool, sawtooth design, 0008039500

The IKA S 50 N - G 45 G - ST dispersing tool represents a high-purity and extremely powerful fluid-mechanical system solution for the professional comminution, homogenisation and suspension of demanding sample media on a laboratory and pilot-plant scale. This precision-manufactured rotor-stator system has been specifically validated for use with the high-performance IKA dispersing drives of the ULTRA-TURRAX T 50 series. In complex processes within the pharmaceutical processing industry, food analysis, biotechnology or pulp research, the disruption of viscous, fibrous or elastic sample structures is the primary criterion for producing homogeneous suspensions in a material-friendly and time-efficient manner for subsequent analytical steps.

Fluid-mechanical comminution via sawtooth geometry

The process-engineering heart of the tool is the generator in a special ST (Saw Tooth) design. The distinctive geometry of the saw teeth on the rotor and stator generates extremely high mechanical impact, cutting and shear forces in the transient shear gap. This mechanical kinetics is ideally designed to cut and disintegrate fibrous matrices – such as tissue structures, plant parts, tobacco, paper and wood pulps, as well as tough plastics or viscous emulsions – in a flash. Uncontrolled wrapping of fibres around the shaft is prevented by the flow-optimised tooth arrangement, ensuring gentle handling of the material and process reliability.

Material-related inertness and uncompromising sterilisability

The materials science design of the dispersing rod is consistently optimised for maximum chemical resilience and absolute freedom from contamination. All functional elements in contact with the medium are made of high-purity, stainless steel grade 1.4404 (AISI 316L). The shaft is supported by an extremely low-friction and wear-resistant PTFE bearing system. This combination of materials allows for continuous use in aggressive acids, alkalis and organic solvents. To ensure a sterile sampling environment and to completely rule out cross-contamination in multi-user operations, the entire assembly can be easily sterilised in an autoclave or cleaned gently with standard disinfectants without damaging the material.

Process reliability and convenient system integration

The mechatronic system architecture guarantees safe and vibration-free power transmission even at maximum speeds of up to 10,000 revolutions per minute. The dispersing shaft can be quickly secured in the T 50 digital drive via the standardised connection without the need for tools. Thanks to the generous immersion depth of up to 250 mm and the fluid-mechanical geometry, the tool is certified for a wide working volume ranging from 0.5 to 20 litres (based on water). This offers laboratory managers and industrial users maximum flexibility when scaling up processes from research to pilot plant scale.

Technical details

Metrology & Dispersion Specifications

• Tool type: Rotor-stator dispersing tool
• Model designation: S 50 N - G 45 G - ST
• Operating range (volume range for H₂O): 0.5 to 20 litres
• Generator design: G (Coarse) with ST geometry (sawtooth)
• Maximum speed range: 10,000 rpm
• Maximum peripheral speed: approx. 18.8 m/s

Design, materials & geometry

• Materials in contact with the medium: Stainless steel 1.4404 (AISI 316L), PTFE
• Stator diameter: 45 mm
• Rotor diameter: 36 mm
• Shear gap (distance): approx. 0.5 mm
• Minimum immersion depth: 70 mm
• Max. immersion depth: 250 mm
• Shaft diameter: 30 mm
• Overall length: 290 mm

Operating conditions & cleaning

• Solvent resistance: Yes (universal chemical resistance)
• Cleaning: Autoclavable (up to 121 degrees Celsius) and hot-air sterilisable (up to 180 degrees Celsius)
• Bearing type: PTFE plain bearing (shaft-guided, low-maintenance)

Contents

• 1 x IKA S 50 N - G 45 G - ST dispersing tool (MPN: 0008039500)
• 1 x Operating instructions / Quality certificate

Important note: The required dispersing drive (e.g. IKA ULTRA-TURRAX T 50 digital), stand fixtures, cross-sockets and sample vessels are not included in the standard scope of delivery and must be configured separately.

Individual requirements & accessories

To get the most out of the IKA S 50 N - G 45 G - ST tool, we recommend using it with the original ULTRA-TURRAX T 50 digital dispersing drive. To ensure a safe and vibration-free setup at your laboratory workstation, our range includes suitable telescopic stands (R 2722 or R 2723), robust cross-sockets (R 271) and practical vessel holders (RH 5). Should you wish to process samples requiring finer final homogenisation, we also offer alternative IKA generator heads with medium (M) or fine (F) toothing. For the regular replacement of wear parts, we stock original PTFE replacement bearings. Please use our technical procurement service to put together your complete homogenisation system.