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Maximum Temperature 750 C, Resistance Tolerance +10% - 5%, custom made, Long-life usage time - details see: https://www.machineto.com/small-diameter-cartridge-heater-10079235

Thet are non-standard, made as your required, we could make very small diameter cartridge heater for example 3mm , 4mm, 5mm etc, we also could make large diameter cartridge heater for example,30mm 40mm 50mm 60mm etc

Technology data

The construction of high temperature cartridge heaters positions a nickel-chrome resistance wire precision wound around a magnesium oxide core.

It is inserted into a stainless or Incoloy tube locating the resistance wire close to the sheath.

The core is centrally positioned within the tube and filled with magnesium oxide powder. Nickel pins pass through the centre of the core making contact with the resistance wire at both ends.

The whole is assembly is highly compacted by a swaging operation and thus ensuring excellent heat transfer to the external sheath.

This allows for operating temperatures to 1600ºF and high watt densities. One end of the heater is closed with a welded metal end-disc and wire leads exit at the opposite end which is typically closed with a lava seal.

A variety of wire leads and lead protection options are available. Heaters can be supplied with internal thermocouples, mounting fittings and many other options

Leads cable method

Crimped-On Leads

Swaged in Leads

Stainless Steel Braid

Stainless Steel Armoured Cable (Hose)

Right Angle Fibreglass Leads
Right Angle Stainless Steel Braid
Right Angel Stainless Steel Armour (Hose)

Single and Double Threaded Fittings

Mounting Flanges

Teflon End Seal

Screw Terminals

Double Ended Terminals

Grounded at Disc End

Ungrounded at Disc End

Grounded at Centre

Ungrounded at Centre

Heat intensity	Not exceeding 30Wcm2 (advisable)
Power	Depends on the dimension
Escape of current (when cold)	<=0.1mA a 242 v.
Insulation (when cold)	5 Min Ohmios 500 Watts minimum
Dielectric strength	1500v. 1/seg
Working temperature	750ºG max.
Tolerance of length	+/-1.5%
Tolerance of diameter	-0.01 a -0.06 m/m
Tolerance of cut of connexion	+/-15 mlm
Power tolerance (w)	5 % - 10 %
Cold areas	Depends on length and diameter 5-25mm