Non-swaged cartridge heaters offer a cost effective solution where the performance of a swaged heater is not required. Non-swaged heaters can be used at watt densities up to 45 watts per square inch and temperatures up to 1000°F. Non-swaged heaters offer tighter length tolerances than swaged heaters, making them ideal for applications such as platens where heaters are generally longer. Non-swaged heaters can be built with 3 independent heat zones, distributed wattage, and/or internal thermocouples. Most of the lead configurations and options available for swaged Hotrod heaters are also available for non-swaged cartridge heaters. Non-swaged heaters are not recommended for applications where there is is a lot of vibration or impact.
- Lead wires are UL rated to 550°C (1022°F)
- High temperature cement filling protects leads and internal parts. Epoxy and silicon rubber leads are available.
- Nickel chromium resistance wire stretched evenly throughout the length for even heat distribution.
- High purity MgO is vibratory filled for maximum heat transfer.
- 304 SS sheath for superior oxidation resistance.
- Welded end disc to prevent contamination and moisture absorption.
Non-Swaged Heater Specifications
| Nominal Diameter | 5/8" | 3/4" | 1" |
| Minimum Diameter | 0.167 |
0.742 |
0.992 |
| Maximum Diameter | 0.624 | 0.749 | 0.999 |
| Standard Lead With Gage | 18 | 18 | 18 |
| Maximum Amps with Standard Lead Wire | 15 | 15 |
15 |
| Maximum Lead Wire gage | 16 | 16 | 16 |
| Maximum Amps | 20 | 20 | 20 |
| Maximum Volts | 600 | 600 | 600 |
Non-Swaged Heater Watt Density Recommendations
| Hole Clearance | Block Temperature in °F | ||||
|---|---|---|---|---|---|
| 1000 | 800 | 600 | 400 | 200 | |
| 0.003 | 25 | 30 | 35 | 40 | 45 |
| 0.005 | 20 | 25 | 30 | 35 | 45 |
| 0.010 | 20 | 23 | 28 | 30 | 38 |
| 0.015 | 18 | 20 | 25 | 27 | 34 |
| 0.030 | 16 | 15 | 20 | 23 | 30 |
| 0.100 | 10 | 12 | 15 | 20 | 25 |
