Based on decades of experience and the close cooperation with our customers we have developed a variety of single extruders for every need. From simplex extrusion of profiles to the feeding of mills and calanders, we help you pick the best combination from our portfolio.
The extruder is driven by a variable speed AC motor either with forced air-cooling or with water cooling. The helical gear unit is equipped with an oil-cooling system with a flanged pump and a heat exchanger. The gear set and the thrust bearing are splash lubricated. The drive gears for the feed roll are lubricated by an oil circulation system with pump and flow controller. The bearings of the feed roll are life-time lubricated with grease.
The extrusion barrel consists of three parts. The barrel inlet has an exchangeable liner with a spiral undercut and a nitride hardened bore. The pin barrel and the extension barrel have an inner surface with hard facing alloy:
The screw is available with stellited screw flight tips or in a nitrided version. The screw is removable from the extruder barrel without having to dismantle or move the extrusion set.
Pork Chop technology is widely used when high output and excellent homogeneity are needed. The extruder serves to extrude and plastify the material for subsequent processing.
Cold rubber compounds are fed to the extruder by a slab feeder. The extruder heats and homogenizes the material and conveys the material into the Pork Chop head by means of a screw. The knives inserted into the Pork Chop head shear off material lumps, which are then further homogenized on a mill and fed into a hot feed extruder or calander.
Our cold feed pin type extruders and our hot feed extruders are designed to cover the different profiles, component specifications and compound properties needed for the production of tire components.
Our screws range from high output models to homogenization optimized designs and even low temperature processing types for delicate compounds.
|KGS extruder screw diameter ***
|Output * kg/h
|Max. speed rpm
|Drive rating (approx.) kW
|7 x 8
|8 x 8
|9 x 8
|9 x 12
|10 x 12
* depending on rubber compound, profile cross section and required output temperature
** pin rows x pins on the circumference
*** other length/diameter (L/D) ratios on request
Our driven feed roll bearings offer life-time lubrication. The gears are lubricated by an oil circulation system, complete with pump and flow controller. Retainer rings are exchangeable, which is made simple by the easy disassembly of the feed roll system.
HF TireTech Group
Tel.: +49 40 77179-649
Fax: +49 40 77179-407
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Our premium parts are known for their highest wear resistance, longest service life, and immediate availability due to stock production.