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RPM / RDO-RP/ RPO

Uneven temperatures in injection moulding tools, hot-runner systems or mandrel heaters cause process faults, rejects and reduced service life. Ihne & Tesch RPM, RDO-RP and RPO tubular cartridge heaters deliver heat precisely where it is needed, with watt densities up to 15 W/cm² for short heating times and stable continuous-operation temperatures.

600 °C Maximum operating temperature
15 W/cm² Watt density
5–10 mm Wall thickness by type
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RPM / RDO-RP / RPO tubular cartridge heaters
Application

Applications

External heating systems reach their limits wherever heat must be introduced directly into a tool or component. Tubular cartridge heaters are installed in bores and transfer heat directly, providing uniform temperature distribution, short heating times and repeatable processes. RPM, RDO-RP and RPO cover applications ranging from plastics processing to hot-runner technology.

  • Injection moulding tools – direct cavity heating for dimensionally accurate parts and fewer rejects
  • Hot-runner systems – uniform temperature control prevents material degradation and pressure peaks
  • Socket machines – reliable heating for repeatable welded joints
  • Mandrel heating in pipe extrusion – heat from within for uniform wall thickness
  • Machine nozzles – precise temperature control at the melt transfer point
  • Die-casting machines – stable tool temperatures for accurately formed parts
Options
  • various diameters and lengths
  • voltage and output options matched to the machine control system
  • various connection lengths and connection types
  • alternative output tolerances for precise process control
  • conical contact surface for improved heat transfer
  • with installation and removal aid for easy tool changes
  • with terminal pins and a flat end face
  • with distributed output along the cartridge length
  • connection cable with various plug options
  • with integrated thermocouple or sheathed thermocouple
At a glance
Operating temperature 600 °C for injection moulding, hot-runner systems and mandrel heating
Watt density 15 W/cm² high watt density for short heating times
Wall thickness 5–10 mm depending on type and installation situation
Design Custom-made matched to bore diameter and installation length
Delivery time 2–3 weeks for custom designs
Compatibility

Compatible machinery

RPM, RDO-RP and RPO tubular cartridge heaters are used as original or replacement equipment in tools and machines from many manufacturers. Each heater is matched to the bore diameter and installation length.

Arburg Allrounder Engel Krauss-Maffei Wittmann Battenfeld Sumitomo Demag Netstal Husky Ferromatik Milacron Bühler Die Casting Frech Socket machines Pipe extrusion lines Hot-runner systems Special-purpose machines
Downloads

Tubular cartridge heaters

Technical data for design, engineering and spare-parts procurement

1 document
RPM / RDO-RP / RPO tubular cartridge heaters (DE)
Data sheet PDF
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FAQ

Frequently asked questions

RPM, RDO-RP and RPO are Ihne & Tesch tubular cartridge heaters for directly heating tools, nozzles and machine components. Installed in bores, they transfer heat uniformly to the surrounding material. With operating temperatures up to 600 °C and watt densities up to 15 W/cm², they cover injection moulding, hot-runner technology, pipe extrusion and die casting.

Tubular cartridge heaters are primarily used for mandrel heating in pipe extrusion. They heat the mandrel from within and provide uniform temperatures across the entire cross-section. This improves wall-thickness consistency and reduces internal stress in the extruded pipe. Distributed output and integrated thermocouples are frequently specified for this application.

RPM, RDO-RP and RPO differ in wall thickness, connection design and watt density. The three types therefore cover different installation conditions and temperature requirements. Selection depends on bore diameter, installation length, required output and operating temperature. Our engineers will assist with specification.

Yes. Ihne & Tesch RPM, RDO-RP and RPO tubular cartridge heaters are available with either an integrated or sheathed thermocouple. Direct measurement at the installation point improves control accuracy and prevents overheating, particularly in hot-runner systems and mandrel heating.

Tubular cartridge heaters are preferable where heat must be introduced inside a component, such as in bores, cores, mandrels or mould inserts. Band heaters are designed to heat the outside of barrels and nozzles. Tubular cartridge heaters minimise external heat loss in tools with internal heating bores, hot-runner systems and mandrel heating.

Ihne & Tesch RPM, RDO-RP and RPO tubular cartridge heaters are custom-manufactured to size. Typical delivery time is two to three weeks. Bore diameter, installation length, voltage and required output are sufficient for specification.

Contact and enquiry

The right tubular cartridge heater without compromise
for your application?

We specify the heater based on bore diameter, installation length and required output, for uniform temperature control in injection moulding tools, hot-runner systems and mandrel heating.

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