Let’s Build the Right Heating Solution
1535 Burgundy Parkway, Streamwood, IL 60107, USA
General Information
Akinsun’s electric line of tubular heaters is the most versatile of all heating elements.
They can be used in straight or formed configurations. Since most tubular heaters are
designed for specific applications, this section serves as a guide for your design
requirements. Due to their flexibility, they are suitable for heating liquids, gases,
radiant applications, and for casting into aluminum, bronze, or iron.
Construction
Akinsun tubular heaters are manufactured using the highest quality materials and
carefully researched production methods. A nickel-chromium resistance wire coil is
precisely centered within the tube and packed with high-purity magnesium oxide (MgO).
After filling, the tube is compacted by rolling or swaging, elongating the tube,
thickening the wire, and compressing the MgO into a dense, solid mass. This process
permanently stabilizes the coil in the center of the tube, preventing movement during
forming and operation.
| Sheath Material | Max. Sheath Temp. | Max Watts per Sq. In | Recommended Application | |
|---|---|---|---|---|
| Copper | 350°F (165°C) | 55 | Water, non-corrosive liquids | |
| Steel | 750°F (385°C) | 22 | Oil immersion, Cast-in | |
| Stainless | 1200°F (635°C) | 30 | Corrosive liquids, Food processing | |
| Incoloy | 1600°F (850°C) | 40 | Corrosive liquids, Air, Clamp-on | |
| Physical Limitations and Electrical Data | ||||
| Sheath Dia ± 0.005" | .260" | .315" | .375" | .430" |
| Sheath Minimum Length | 11½" | 11½" | 11½" | 11½" |
| Length Maximum | 84" | 200" | 230" | 255" |
| Max. Amperage | 15 | 30 | 30 | 40 |
| Max. Voltage | 250V | 300V | 480V | 550V |
| Thread Size | 6-32 | 8-32 | 10-32 | 10-32 |
| Standard Length Tolerances | ||||
| Sheath Length | Sheath Lgh. Tolerance | Heated Lgh. Tolerance | Minimum Cold Ends | |
| Up to 20" | ±1/16" | ±2% | 1" | |
| 20" to 100" | ±1/8" | ±2% | 1½" | |
| 100" to 200" | ±1/4" | ±2% | 2½" | |
Versatility
- Available in .260", .315", .375", and .430" diameters
- Multiple standard bend configurations (up to 3–5 bends)
- Four sheath material options
Features
AKINSUN tubular heaters are manufactured using the highest quality materials
and advanced construction techniques. This enables maximum allowable heat
output without compromising service life.
Economical Operation
Tubular heaters emit infrared energy, which is readily absorbed by materials
and efficiently converted into heat. Energy is delivered directly into the
product without the need to heat surrounding air, making AKINSUN heaters an
economical solution for a wide range of heating applications.
Performance Capabilities
- Sheath temperatures up to 1600°F (850°C)
- Watt densities up to 40 W/in² in air and when clamped down
- Voltage options: 120V, 208V, 240V, 480V, and 550V
- Resistant to shock, vibration, and corrosion