Industrial Rod Cartridge Heater Resistance Pencil Heater

Product Description

Factory Custom Industrial Rod Cartridge Heater for Mold Immersion Heating

Cartridge heaters is consist of a cylindrical stainless steel tube and thus provide a high corrosion prevention. The heating wire inside which is onto a ceramic core.

The number of coils varies depending on the power. and provide a great uniform distribution of heat, which considerably increases the long life of the heater as well as prevents the oxidation of the heater wire even at high temperatures.

The solids, liquids, and gases need to be heated by cartridge heater, transmit heat quickly by conduction if the producer of the heat(the cartridge) is in direct contact with the heat sink(any solid, liquid, or gas). Widely used for manufacturing plastic and rubber parts in the car industry or in the food processing industry, etc they are also commonly found in the chemical, electronics, medical equipment, packing and nuclear industries.

 

Apart from our broad standard range we also develop and manufacture cartridge heaters according to your special demands.

 

Cartridge heaters are made of crimped-on or swaged-in construction that consists in a high-grade nickel chromium resistance wire wound around a high-quality MgO core that is centered in a stainless steel casing.

Cartridge heaters are used for several heating metal parts and can be fitted with threaded bushings for liquid heating for certain applications. cartridge heaters will reach metal temperatures of up to 760°C with the appropriate material, watt density, and fit selections .

Cartridge heater performance capabilities:

Part temperatures up to 1400°F ( 760° C ) on alloy 800 sheath

Watt densities up to 40W/cm2

Maximum voltage up to 480VAC, Minimum voltage up to 5VAC

Minimum diameter up to 3mm

Maximum diameter up to 35mm

Benefits of cartridge heater:

Easy and economical to install

Designed with first-class materials

Maximized heat transfer

Easy to maintain

uniform temperatures

Oxidation and corrosion resistant

Durable

CE certificated issued by TÜV Rheinland

Cartridge heater technical detail:
1. Tube diameter: Φ3mm-Φ30mm
2. Tube Material:SS304;SS316,SS321,NICOLOY800 etc
3. Insulation Material:High-purity Mgo
4. Reisistance wire element:Ni-Cr or FeCr
5. Lead Connection Option: Crimped or Swaged leads
6. Lead and type of connection leads, 10" Fiberglass Standard(Wire options,silicone high temperature fiberglass

Cartridge heater sheath material	SS304.321.316L,Incoloy800.840,Titanium
Insulation material	High-purity MgO
Resistance	Ni-Cr or FeCr
Maximum voltage	480VAC
Wattage density	high/middle/low(5-40w/cm2)
Wattage tolerances	tolerance :+5% -10%
Dimensional	Diameter: Min. dia:3mm
Length of cartridge heater:	Customized
Lead options	Crimped- on / Swaged- in
Lead types	Swage fiberglass insulation nickel wire ( 750°C )
	Crimp PTFE line ( 250°C ) Crimp
	silicon insulated wire ( 200°C )
	Crimp fiberglass insulation nickel wire ( 450°C )
Internal	Type J or K available thermocouple
Lead protection options	Stainless steel braid
	Stainless steel flexible hose
other options	Bent heaters, in no-heat section, up to 90° angle
	mounting flange

Cartridge heater feature:
Common cartridge can be devideded :
1. High power density(heat area sufuce power 10~25w/cm2)
Working temperature ≤450 degrees.
2. Middle,low power density(heat area sufuce power 5~11/cm2)
working temperature ≤ 300 degrees
Votage:12~250V(or as requirment)
High Density Construction
High-quality stainless steel construction provides long-lasting protection even in the most rugged industrial environments
Protected with a stainless steel sheath, their watt density can reach 50 W/cm2 and their operating temperature can go up to 800°C.

Cartridge heater factors:
Please consider the following factors in order to select the right cartridge heater.
Operating temperature
Watt density of the heating element
Sheath material (corrosive or non corrosive)

Temperature of the corrodent

Degree of aeration of exposed corrodent

Velocity of the corrodent

Cartridge heater dimensional Data:
This table shows minimum/ maximum sheath lengths for available diameters.

Diameter			Length
Normal	Actual		Min		Max
in.	in.	mm	in	mm	in	mm
1/8	0.122	3.1	7/8	22.2	12	305
1/4	0.246	6.3	7/8	22.2	36	915
3/8	0.371	9.4	7/8	22.2	48	1220
1/2	0.496	12.6	7/8	22.2	60	1520
5/8	0.621	15.8	1	25	72	1830
3/4	0.746	18.9	1	25	72	1830
1	0.996	25.3	1 1/4	32	72	1830

Indicates recommended maximum sheath length; however, longer lengths may be available.

Termination Options of Cartridge Heater

Swaged-in Flexible leads

Swaged-in flexible leads, with silicone-fiberglass insulation, are recommended for applications in which the leads must be bent at the exit point from the heater.
Unless longer length is specified, 250mm(10 in.) leads are supplied.
Heaters 150mm(6 in.) or shorter generally have a 6 mm(1/4 in.) no-heat section. Heaters up to 250mm(10 in.) require a 25mm(1 in.) no-heat section. Heaters greater than 250mm may require more than a 25mm no-heat section. To order, please specify swaged-in flexible leads.

Right Angle leads

Right angle leads are used in applications with a high degree of flexing and when space limitations are critical. Lead wires exit at a 90° angle through the side of the heater sheath.
 

Right angle tube may be necessary on certain constructions.To order, specify right angle leads and lead length.

Diameter mm	Min No-Heat Length mm(in.)
6.5	15 (9/16)
8.0	15 (9/16)
10	17 (2/3)
12.5	18 (11/16)
16.0	20 (3/4)
20.0	21 (13/16)

 

A stainless steel braid is designed to protect leads from abrasion against sharp edges.
When the leads exit straight out, the braid is swaged into the no-heat section of the heater. When the leads exit at a right angle, a crimp connector is used to attach the braids.
Unless otherwise specified, leads are 250 mm(10 in.) and the braid is 200 mm(8 in.) long. To order, specify either straight or right angle stainless steel braid, lead length and no-heat section.

Diameter	Min. No-Heat Length
	Straight	Right Angle mm
mm
	mm (in.)		(in.)
6.5	30 (1 1/8)		N/A
8.0	30 (1 1/8)	15	(9/16)
10.0	30 (1 1/8)	17	(2/3)
12.5	30 (1 1/8)	18	(11/16)
16.0	30 (1 1/8)	20	(3/4)
20.0	30 (1 1/8)	21	(13/16)

Stainless steel hose provides the best protection against abrasion from sharp edges or abrasive equipment. It also offers ease of handling and wiring in abrasive environments.
When the leads exit at a right angle to the heater, the hose is silver soldered to the sheath. Unless otherwise specified, leads are 250 mm(10 in.) long and the hose is 200 mm(8 in.) long. To order, specify stainless steel hose, lead length and no-heat section.

	Min. No-Heat Length
Diameter	Straight	Right Angle mm
mm	mm (in.)		(in.)
6.5	30 (1 1/8)		N/A
8.0	30 (1 1/8)	15	(9/16)
10.0	30 (1 1/8)	17	(2/3)
12.5	30 (1 1/8)	18	(11/16)
16.0	30 (1 1/8)	20	(3/4)
20.0	30 (1 1/8)	21	(13/16)

Galvanized conduit equals stainless steel hose in its abrasion protection.
The conduit is attached with a 90° elbow copper coupler, which overlaps the heater sheath. Unless specified, 200 mm(8 in.) conduit is supplied, leads are 50 mm longer than the conduit. To order, specify galvanized conduit, lead length and no-heat section.

	Min			Galvani
Diam eter		Dimensio n A	Dimensio n B	zed
	No-Heat
				conduit
	Length
mm		mm(in.)	mm(in.)	O.D.
	mm(in.)
				mm(in.)
6.5	12(7/16)	22(7/8)	29(1 1/8)	10(3/8)
8.0	12(7/16)	22(7/8)	29(1 1/8)	10(3/8)
10.0	12(7/16)	22(7/8)	29(1 1/8)	10(3/8)
12.5	12(7/16)	28(1 1/8)	30(1 3/16)	14(1/2)
16.0	12(7/16)	28(1 1/8)	34(1 5/16)	14(1/2)
20.0	12(7/16)	29(1 1/8)	36(1 7/16)	16(5/8)

Ceramic Bead Insulation

Ceramic bead insulation protects the leads from high temperature ambients above 450°C(840°F). The beads fit over solid conductors and are extended long enough to reach a cooler area where flexible wires can be attached. To order, specifyceramic beads and length, and additional lead length.

Flanges for the cartridge heater

Stainless steel flanges are a convenient mounting method as well as a way to position a heater within an application. Flange style according to customer requirements . These flanges can be located in any no-heat section of the heater sheath. To order, specifyflange, flange size and location.

 

Immersion Cartridge Heaters:

(For liquid immersion heating applications, use brass or stainless steel threaded bushing.)

 

The size of threaded bushing is matched according to pipe diameter. The specifications of threaded bushing include G thread, NPT thread, BSPP thread, etc.
Please contact us for specific order.

How to install cartridge heater

make a hole in the section that is to be heated

ream a smooth hole for contact and for better heat transfer

extend the hole through the section so that the unit can be driven out if you should need to remover it.

if making a through hole is impossible ,increase the size of the hole without exceeding the tolerances

Reduce the vibration and flexing of the lead wires to prolong service life

prevent contamination from liquids by protecting the end of the heater

When ordering Cartridge Heaters, please specify the following information :-
1. Type of Cartridge Heater(please refer to Termination Options).
2. Diameter of Cartridge Heater.
3. Overall length for a straight Cartridge Heaters.
4. Wattage & Voltage
5. Lead type(glass fibre / PTFE) & lead length.