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Coil Heaters: High-Performance Heating Solutions
Shop our wide selection of coil heaters for industrial, commercial, and custom applications. Find nozzle heaters, flexible coil heaters, and more. High watt density, durable, and precise temperature control.
Your best choice | ELEKHEAT coil heater
Coil heaters provide efficient and versatile heating for various applications, including plastics processing, hot runner nozzles, and packaging machinery. Constructed with resistance wire encased in a durable sheath (often stainless steel), these compact heaters offer excellent heat transfer and can be formed into complex shapes. Key features include high watt densities and suitability for high-temperature environments. Selecting the right coil heater depends on wattage, temperature needs, and sheath material. Common search terms: flexible coil heater, nozzle heater, heating element, cartridge heater. Coil heaters are a reliable choice for precise temperature control.
What coil heaters do we have
Copper Sleeve Coil Heaters
These heaters use a thermally conductive copper sleeve wrapped around the flow channel, ensuring rapid, uniform heat transfer.
- Pros: Excellent for demanding polymers like PA (nylon) and POM (acetal), which require tight temperature control.
- Cons: Higher manufacturing costs; regular maintenance to prevent oxidation.
- Best For: High-precision applications where heat consistency impacts material performance.
Embedded Coil Heaters
Embedded coils integrate heating elements directly into the runner walls, enabling fast response times and localized heating.
- Pros: Superior for fast-processing plastics like ABS and PP, minimizing cycle times.
- Cons: Complex installation and repairs; frequent inspections needed to avoid downtime.
- Best For: High-volume production prioritizing speed over ease of maintenance.
Spring Coil Heaters
These heaters use a thermally conductive copper sleeve wrapped around the flow channel, ensuring rapid, uniform heat transfer.
- Pros: Excellent for demanding polymers like PA (nylon) and POM (acetal), which require tight temperature control.
- Cons: Higher manufacturing costs; regular maintenance to prevent oxidation.
- Best For: High-precision applications where heat consistency impacts material performance.
Why choose ELEKHEAT
Unmatched Reliability for Critical Applications
ELEKHEAT coil heaters deliver precise, consistent temperature control. ISO-certified quality ensures minimal downtime for critical processes. Robust design guarantees unwavering performance, eliminating failure risks.
Energy-Efficient Designs to Reduce Operating Costs
ELEKHEAT heaters cut energy consumption by up to 25%. Smart design minimizes heat loss, delivering substantial long-term savings, significantly lowering operational costs.
Engineered for Durability in Harsh Environments
Built with robust materials like stainless steel and Incoloy, ELEKHEAT heaters withstand harsh environments. Corrosion-resistant coatings ensure longevity, minimizing maintenance and maximizing uptime.
Custom Solutions Tailored to Your Needs
ELEKHEAT provides custom coil heaters. We collaborate to meet your precise specifications, ensuring a perfect fit. Benefit from rapid prototyping and dedicated support.
Application scope
Packaging
Plastics Processing
Food & Beverage
Industrial & Manufacturing
Laboratory & Scientific
Coil Heater Specifications Reference
| Sheath Material | Chromium-Nickel Steel | Thermocouple | Type J (Standard); Type K |
|---|---|---|---|
| Insulation Material | MgO (Magnesium Oxide) | Length Tolerance (Straight) | 5% |
| Resistance Wire | NiCr 80-20 (Nickel-Chromium 80-20) | Wattage Tolerance | 5% |
| Thermocouple | Type J; Type K | Resistance Tolerance | 5% |
| Maximum Sheath Temperature | 650 °C | Unheated Length | 35 mm (Standard) |
| Dielectric Strength of Mold | 800V A/C | Dimensional Tolerance | Coil: D + 0.1 ~ 0.2 mm |
| Insulation | > 5 MΩ | Coil Length + 1 mm |
Product Details
1. Uniform heating: good heating effect, the heating coil is not easy to deform.
2. Imported high-temperature wire: imported high-temperature wire is more resistant to high temperatures, avoiding damage to the heating coil lead due to excessive mold temperature.
3. High-quality high-temperature snake skin sleeve: better protection of the lead, effectively singing the service life of the heating coil.
4. High-power non-standard customization: a full range of specifications, can be customized to meet the various needs of customers.
5. Copper sleeve can be wound
Terminal exit selection
Product Benefits
- Standard sizes available in various cross-sections
- Various watt densities available
- Robust design with terminal outlet options
- Built-in thermocouple
- Designed for uniform heat dissipation
- Precise fit for hot runner nozzles and manifolds
- High density and non-corrosive
- Maximized heat transfer due to larger contact area
To better design the right heater for you, please consider the following factors:
- Heating element voltage and power requirements
- Sheath material
- Product temperature
- Application ventilation level
- Application air velocity
- Ambient temperature
Please provide the following data when designing
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High-Quality Coil Heater Manufacturer
A Simple Guide to Buying Coil Heaters
Coil heaters are compact, high-performance heating elements designed to provide exceptional heat in small spaces. They are commonly used in industrial processes like plastics manufacturing (hot runner nozzles), packaging, and scientific equipment.
Here’s what you need to consider when buying one.
1. What Are You Heating? (The Application)
First, understand the physical object you need to heat. Coil heaters are typically wrapped around a cylindrical nozzle or part. The most important measurements are:
Inside Diameter (ID): The heater must fit snugly around the part. A loose fit results in poor heat transfer and can cause the heater to burn out prematurely. Measure the outside diameter of your part accurately.
Heated Length: How much of the part needs to be heated? The length of the coiled section should match this requirement.
2. Key Specifications to Choose
Once you know the dimensions, you need to select the right electrical and material properties.
A. Voltage and Wattage
Voltage (): This is determined by your power source. Common industrial voltages are 120V, 240V, or 480V. This must match your equipment.
Wattage (): This is the heater’s power output. Higher wattage means more heat, but it’s not always better. The key concept is Watt Density (watts per square inch or ).
Low to Medium Watt Density: Good for general-purpose heating. Lasts longer.
High Watt Density: Heats up very quickly but requires precise temperature control to avoid overheating and burnout.
Recommendation: If you don’t have a specific wattage requirement, consult your equipment’s manual or the heater manufacturer. Providing them with your application details is the best way to get the right wattage.
B. Sheath Material
The outer metal tube of the heater is called the sheath. The material determines its maximum operating temperature and resistance to corrosion.
Stainless Steel (e.g., 304, 316): The standard choice. Excellent for most applications up to about (). Good corrosion resistance.
Incoloy® / Inconel® (e.g., 800, 600): A superior nickel-chromium alloy. Use this for very high temperatures (above ) or in corrosive environments. It is more expensive but necessary for demanding applications.
C. Built-in Thermocouple
A thermocouple is a sensor that measures temperature. For precise temperature control, you need a heater with an integrated thermocouple.
Why you need it: A thermocouple sends feedback to a temperature controller, which then cycles the heater on and off to maintain a set temperature. Without it, the heater would just stay on, likely overheating and damaging the part or itself.
Common Types:
Type J: Very common for general-purpose applications up to .
Type K: Used for higher temperature applications.
Recommendation: Almost always buy a heater with a built-in thermocouple. Choose the type that is compatible with your temperature controller.
D. Lead Wires and Termination Style
This is how the heater connects to your power source. Consider the space and environment where it will be installed.
Lead Wire Length: Ensure the wires are long enough to reach the power connection without stretching.
Protection:
Fiberglass Sleeve: Standard, flexible insulation.
Braided Metal Sleeve: Offers good protection against abrasion and pinching.
Flexible Armored Cable (Conduit): Provides the best protection against physical damage and contaminants.
Exit Style:
Straight Exit: Wires come straight out from the end.
Right-Angle Exit: Wires exit at a 90-degree angle, useful for tight spaces.
Buying Checklist: Before You Order
Have the answers to these questions ready to ensure you get the right part:
Inside Diameter (ID): What is the diameter of the part I’m heating?
Heated Length: What length do I need to heat?
Voltage: What is my power supply voltage? (e.g., 240V)
Wattage: What is the required power? (If unsure, ask the supplier.)
Sheath Material: Is Stainless Steel okay, or do I need Incoloy® for high heat?
Thermocouple: Do I need one? (Almost always yes). Is it Type J or Type K?
Lead Wires: How long do they need to be, and what level of protection (sleeve, braid, armor) is required?
Lead Exit Style: Straight or right-angle?
By considering these key factors, you can confidently select a coil heater that will perform effectively and reliably in your application. When in doubt, always contact the supplier with the details of your project.
