Burgsmüller precision extrusion components and thread whirling systems

Burgsmüller precision extrusion components: modular screw elements, bimetallic barrels, splined shafts, lead screws, and whirling tooling.

Burgsmüller modular screw elements for twin screw extrusion machinery

German manufacturer Burgsmüller produces precision screw elements for compounding twin screw extruders. The portfolio encompasses conveying bushings, kneading blocks, mixing and shearing elements configured with single, double, or triple flight geometric profiles.

Forward and reverse conveying bushings engineered with optimized flight pitches
Staggered kneading disc blocks with 30, 45, 60, and 90 degree shearing angles
High endurance tool steel and powder metallurgy alloy metallurgy fabrications
Micron level clearance accuracy maintaining smooth co-rotating screw operation

Burgsmüller modular extruder barrels and bimetallic liner assemblies

Burgsmüller manufactures modular barrel sections for twin screw and single screw extruders. Housing bodies are machined in solid nitrided designs or fitted with replaceable bimetallic figure-eight liners to resist severe abrasive wear and chemical corrosion.

Solid feed and conveying barrel sections with liquid heating and cooling bores
Open intake zones and atmospheric venting housings for volatile extraction
Replaceable oval liners machined from specialized wear resistant PM alloys
Precision flange alignment with dedicated ports for melt sensor integration

Burgsmüller precision splined screw shafts for high torque transmission

The screw shaft forms the primary mechanical backbone delivering motor torque from the gearbox to the assembled screw elements. Burgsmüller manufactures splined shafts from high strength alloy steels with involute spline geometry complying with DIN 5480 standards.

Precision fabrication following DIN 5480 and ISO involute spline specifications
Core heat treatment delivering exceptional resistance against torsional fatigue
Ground shaft journals and spline teeth ensuring absolute runout straightness
High load capacity accommodating intense extrusion pressures and shear forces

Burgsmüller degassing inserts, adapters, and melt injection plugs

Specialized Burgsmüller components optimize melt hydrodynamics across degassing and filtering zones. The manufacturer supplies degassing inserts configured for specific polymer melt viscosities, 8/0 transition adapters with probe ports, and fluid injection plugs.

Degassing inserts designed with viscosity tailored melt channel geometry
Transition 8/0 adapters featuring threaded ports for melt sensors and probes
Machined injection plugs and sealing plugs for liquid additive introduction
Profiles engineered with dedicated sealing borders to prevent polymer leakage

Burgsmüller precision threaded lead screws and bronze spindle nuts

As the pioneer of thread whirling technology, Burgsmüller produces precision threaded lead screws and spindles spanning diameters from 16 to 300 mm. Trapezoidal, metric, saw-tooth, and custom threads feature ground grade surface finishes with high load durability.

External thread whirling across diameters from 16 to 300 mm on heavy shafts
Trapezoidal bronze and steel nuts machined from 16 to 600 mm inside diameters
Trapezoidal, saw-tooth, buttress, and customized multi-start thread profiles
Minimal friction coefficient delivering smooth drive motions under high loads

Burgsmüller thread whirling tooling heads and carbide cutter inserts

Burgsmüller develops advanced cutter heads and tooling for high efficiency thread whirling on lathes and specialized machines. The system machines deep external and internal thread profiles rapidly while reducing cycle times and optimizing raw material usage.

High velocity whirling cutter heads for machining feed screws and shaft blanks
Indexable carbide insert tooling treated with wear resistant PVD thin coatings
Machining of symmetric and asymmetric rotational surfaces without vibration
Substantial reduction of machining cycle time compared with regular turning

German engineering heritage and Burgsmüller brand milestones

Founded in 1876 in the historic engineering hub of Einbeck, Burgsmüller stands as a globally acknowledged pioneer in thread whirling and extrusion machining.

Across more than a century of metallurgical development, the enterprise has grown into a premier provider of precision wear components for twin screw processing lines.

Today the facility delivers modular wear resistant screw elements and bimetallic barrel housings to compounding facilities around the globe.

Continuous factory quality control alongside modern five-axis machining centers ensures outstanding operational longevity when processing filled technical polymers.

Geometry and metallurgy of modular extruder screw elements

The modular screw design concept engineered by Burgsmüller provides flexible configuration tailored to customer-specific formulation, devolatilization, and pelletizing demands.

The portfolio features conveying flights with variable pitch, shearing kneading blocks with diverse stagger angles, and distributive mixing blocks.

To withstand severe abrasive attack from fiberglass strands and mineral additives, components are machined from powder metallurgy tool steel grades and proprietary BU alloy formulations.

Precision tooth contouring eliminates localized polymer degradation zones while maintaining uniform plasticization.

Design of sectional barrel housings and bimetallic liner sleeves

Burgsmüller processing barrel sections are engineered modularly to allow flexible zoning for feeding, plasticizing, atmospheric venting, vacuum degassing, and discharge pressure generation.

Barrel housings feature internal spiral fluid channels ensuring rapid thermal response and uniform temperature management.

In high wear processing zones, replaceable figure-eight bimetallic liner sleeves fabricated through centrifugal diffusion or powder metallurgy are installed.

This rebuildable construction substantially reduces long-term maintenance expenditure without requiring complete replacement of the structural steel housing.

Involute splined screw shafts and tailored degassing block assemblies

Transmitting heavy drive torque within modern compounding machinery demands exacting screw shaft geometry.

Burgsmüller machines splined shafts from high strength alloy steels featuring involute spline profiles adhering to DIN 5480 standards, undergoing multistage thermal processing to relieve internal stresses.

Within degassing zones, processing stability is augmented by custom degassing inserts shaped to match the rheological behavior of specific polymer melts. This design avoids melt surging toward vacuum ports, ensuring steady gas evacuation without contamination of environmental extraction paths.

Precision thread whirling spindles and heavy duty drive screw pairs

As the inventor of modern thread whirling technology, Burgsmüller manufactures heavy drive threaded lead screws and bronze spindle nuts for industrial presses and machine building. External whirling operations form trapezoidal, buttress, and metric thread forms across diameters up to 300 mm.

Thread flank surfaces attain ground-equivalent finish quality without requiring lengthy abrasive grinding passes, lowering friction against mating bronze or steel nuts.

Finished spindles exhibit high fatigue strength, true axial alignment, and minimal backlash throughout extended operational lifespans.

Service inspection protocols and precision extruder wear measurement

Regular inspection of internal mechanical clearances between screw tips and barrel walls represents a key factor in avoiding unexpected compounding shutdowns. Burgsmüller service engineers utilize optical and mechanical bore gauges to record accurate profile dimensions directly on site.

Drawing upon collected wear profile charts, engineers prepare remaining life assessments and calculate optimized screw rebuild configurations suited for evolving customer formulations. Timely modular replacement of degraded segments restores original throughput efficiency and melt uniformity.

Burgsmüller and model names are trademarks of their respective owners and are used only to identify the equipment for which we source parts. SpareX is not an official dealer, distributor or representative of Burgsmüller and is not affiliated with the trademark owner. Origin, documents and warranty are stated for each item in the quotation.