Immersion Type Electric Water Heating Cartridge Heater
Our cartridge heater consists of a robust cylindrical stainless steel tube, ensuring exceptional corrosion resistance. Inside, a meticulously wound heating wire is coiled around a premium ceramic core, forming the heart of this high-performance heater.
The coil count is tailored to the heater's power specifications, ensuring optimal heat distribution and prolonging heater lifespan. This design also minimizes oxidation of the heating wire, even at elevated temperatures. Whether heating solids, liquids, or gases, our cartridge heaters excel in transferring heat swiftly through conduction, provided they are in direct contact with the heat sink. Ideal for manufacturing plastic and rubber components in the automotive industry, these heaters are equally vital in food processing, chemical, electronics, medical equipment, packaging, and nuclear industries.
Beyond our extensive standard range, we specialize in custom-developing and manufacturing cartridge heaters tailored to meet your unique specifications.
Cartridge heaters feature a crimped-on or swaged-in construction, incorporating a high-grade nickel-chromium resistance wire for exceptional performance.
This wire is meticulously wound around a superior-quality MgO core, which is perfectly centered within a stainless steel casing.
Cartridge heaters are designed for diverse heating applications, including metal parts and liquid heating when equipped with threaded bushings. Capable of achieving metal temperatures up to 760°C, these heaters deliver optimal performance with the right material, watt density, and fit selections.
Performance capabilities:
1. Part temperatures reaching up to 1400°F (760°C) with an alloy 800 sheath
2. Watt densities up to 40W/cm²
3. Maximum operating voltage up to 480VAC, Minimum voltage as low as 5VAC
4. Minimum diameter as small as 3mm
5. Maximum diameter up to 35mm
Benefits:
1. Easy and economical installation
2. Constructed with premium materials
3. Enhanced heat transfer efficiency
4. Effortless maintenance
5. Uniform temperature distribution
6. Resistant to oxidation and corrosion
7. Exceptional durability
8. Certified by TÜV Rheinland (CE certification)
Technical Details:
1. Tube diameter: Φ3mm-Φ30mm
2. Tube Material: SS304; SS316, SS321, NICOLOY800, etc.
3. Insulation Material: High-purity MgO
4. Resistance wire element: Ni-Cr or FeCr
5. Lead Connection Options: Crimped or Swaged leads
6. Lead and Type of Connection Leads: 10" Fiberglass StandardWire Options: Silicone High Temperature Fiberglass.
Specification of Cartridge Heaters:
| 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 |
toloerance :+5% -10% |
| Dimensional |
Diameter: Min. dia:3mm |
| Length: |
Customized |
| Lead options |
Crimped- on / Swaged- in |
| Lead types |
Swage fiberglass insulation nickel wire ( 750°C ) |
| Crimp on silicone lead ( 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 |
Feature:
Common cartridge heaters can be divided into two types based on density:
1. High Power Density: Heat area surface power 10~25 W/cm²
Working temperature ≤ 450°C
2. Middle to Low Power Density: Heat area surface power 5~11 W/cm²
Working temperature ≤ 300°C
Voltage: 12~250V (or as per requirement)
High Density Construction:
High-quality stainless steel construction ensures long-lasting protection, even in the most demanding industrial environments.
Protected with a stainless steel sheath, the watt density can reach 50 W/cm² and the operating temperature can go up to 800°C.
More Photos of Our Cartridge Heaters:
Factors - How to Choose the Right Cartridge Heaters:
Consider the following factors to select the right cartridge heater:
1. Operating temperature
2. Watt density of the heating element
3. Sheath material (corrosive or non-corrosive)
-
- Temperature of the corrodent
-
- Degree of aeration of exposed corrodent
-
- Velocity of the corrodent
Dimensional Data:
(This table shows minimum and 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:
1. Swaged-in Flexible Leads:
Swaged-in flexible leads with silicone-fiberglass insulation are recommended for applications where the leads must be bent at the exit point from the heater.
Unless a longer length is specified, 250mm
(10 in.)
leads are supplied.
Heaters 150mm
(6 in.)
or shorter generally have a 6mm
(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 specifyswaged-in flexible leads.
2. 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.
A right-angle tube may be necessary for certain constructions. To order, specifyright angle leads and lead length.
| Diameter mm |
Min No-Heat Length mm(in.) |
| 6.5 |
15 (9/16) |
| |
15 (9/16) |
| 108.0 |
17 (2/3) |
| 12.5 |
18 (11/16) |
| 16.0 |
20 (3/4) |
| 20.0 |
21 (13/16) |
3.Premium Stainless Steel Braid
Our robust stainless steel braid is meticulously designed to safeguard leads from abrasion against sharp edges, ensuring durability and reliability.
For different lead exit configurations, we offer tailored solutions: When leads exit straight out, the braid is swaged into the no-heat section of the heater. For right-angle exits, a crimp connector firmly attaches the braids, providing seamless integration.
Unless otherwise specified, our standard leads measure 250 mm
(10 in.)
in length. The braid is 200 mm
(8 in.)
long. To customize your order, please specify your preference for straight or right-angle stainless steel braid, lead length, and no-heat section requirements.
| 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) |
4. Durable Stainless Steel Hose
Our stainless steel hose provides superior protection against abrasion from sharp edges or abrasive equipment. It also ensures ease of handling and streamlined wiring in demanding environments.
For right-angle lead exits, the hose is securely silver soldered to the sheath. Unless otherwise specified, standard leads are 250 mm(10 in.) in length and the hose measures 200 mm(8 in.) in length. To order, please 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) |
5. Galvanized Conduit Protection
Our galvanized conduit offers protection equivalent to stainless steel hose against abrasion.
The conduit is attached with a 90° elbow copper coupler, securely overlapping the heater sheath. Unless specified, we provide a standard 200 mm(8 in.) conduit, with leads 50 mm longer than the conduit. To order, specify galvanized conduit, lead length, and no-heat section.
| |
Min |
|
|
Galvani |
| Diam |
Dimensio |
Dimensio |
zed |
| No-Heat |
| eter |
n A |
n B |
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) |
6. High-Temperature Ceramic Bead Insulation
Our ceramic bead insulation offers exceptional protection for leads in high-temperature environments above 450°C(840°F). The ceramic beads fit over solid conductors and extend to cooler areas where flexible wires can be securely attached. To order, specify ceramic beads and length, and additional lead length requirements.
7. Versatile Stainless Steel Flanges
Our stainless steel flanges provide both a convenient mounting method and an effective way to position heaters within applications. Flange style and specifications are tailored to customer requirements. These flanges can be positioned in any no-heat section of the heater sheath. To order, specify flange, flange size, and location. .
Immersion Cartridge Heaters for Liquid Applications:
For liquid immersion heating applications, we recommend using brass or stainless steel threaded bushings.
The size of the threaded bushing is matched according to the pipe diameter. Available specifications include G thread, NPT thread, and BSPP thread , among others.
Step-by-Step Guide to Installing Cartridge Heaters:
1. Create a precise hole in the section to be heated.
2. ream a smooth hole for optimal contact and enhanced heat transfer
3. extend the hole through the section to facilitate easy removal of the unit when necessary.
4. if making a through hole is not feasible, increase the hole size within the acceptable tolerances
5. Minimize vibration and flexing of the lead wires to extend the service life
6. prevent liquid contamination by protecting the heater's end
When ordering Cartridge Heaters, please provide the following details :
1. Type of Cartridge Heater(please refer to Termination Options)
2. Diameter of Cartridge Heater
3. Overall length of the straight Cartridge Heaters
4. Wattage and Voltage
5. Type of Lead(glass fibre / PTFE)and lead length.
FAQ
(1). Q: Can you offer a discount?
A: It depends on the quantity. The larger the quantity, the greater the discount.
(2). Q: How can I obtain a sample?
A: For most products, samples can be sent free of charge if the quantity is small, with customers covering the shipping costs. Alternatively, provide your DHL, FEDEX, EMS, or UPS account number. For larger quantities, a sample fee may apply.
(3). Q: Why is your price higher than other Chinese suppliers?
A: We focus on producing high-quality, high-performance products to build long-term, amicable relationships with all customers.
While our prices may not be the lowest, the cost performance is the highest.
(4). Q: How do you ensure the quality of mass production matches the sample sent to me?
A: Our warehouse team keeps an identical sample marked with your company name before sending the original to you, ensuring consistent production quality.
){kind=link}