Hi-Denisty Cartridge Heater (Metric Sizes) Specifications and Tolerances

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Performance Ratings

Maximum Temperature: 1400°F (760°C)

Maximum Watt Density: 100-300 W/in² (15.5-46.5 W/cm²) depending on heater size & operating temperature.

Note: The maximum operating temperature and the life expectancy of a cartridge heater is dependent on two main factors:
1. The maximum recommended sheath temperature (v1200°F for a standard heater)
2. The maximum ambient temperature for the termination selected. Consult Tempco if you require a recommendation for your application.

Dimensional Specifications

Nominal Diameter	6.5		8		10		12.5		16		20
	mm	(in)	mm	(in)	mm	(in)	mm	(in)	mm	(in)	mm	(in)
Actual Diameter	6.43	-0.253	7.92	-0.312	9.93	-0.391	12.42	-0.489	15.93	-0.627	19.91	-0.784
Actual Diameter Tolerance	±.05 mm (±.002")
Minimum Length	25.4	-1	25.4	-1	25.4	-1	25.4	-1	25.4	-1	31.75	(1-1/4)
Maximum Length	914	-36	914	-36	1219	-48	1524	-60	1829	-72	1829	-72
Length Tolerance Heaters up to 127 mm (5") long	±2.4	(3/32)	±2.4	(3/32)	±2.4	(3/32)	±2.4	(3/32)	±2.4	(3/32)	±3.2	(1/8)
Length Tolerance Heaters over 127 mm (5") long	±2% of Sheath Length
Camber Tolerance Heaters to 305 mm (12") long	.25 mm (.010") per 305 mm (12") of length
Camber Tolerance Heaters over 305 mm (12") long	.50 mm (.020") per 305 mm (12") of length

With some force, Tempco Hi-Density Cartridge Heaters will normally flex enough to fit into a straight reamed hole.

Electrical Specifications

Nominal Diameter	6.5	8	10	12.5	16	20
Maximum Voltage	260	260	260	380	480*	480*
Maximum Amperage (see next line for exceptions)	4.4	4.4	6.7	10.5	23	23
†Maximum Amperage for Types C1C, C1D, C2C, C2D, CS, F, M3, R1B, S1B, S2B, SA, W, & W3 & Terminations	3	3	5.5	7.6	9.7	9.7
Maximum Wattage at 260V	1140	1150	1740	2730	5980	5980
Maximum Wattage at 380V	—	—	—	3990	8740	8740
Maximum Wattage at 480V	—	—	—	—	10,580	10,580
Wattage Tolerance	Plus 5%, Minus 10%
Resistance Tolerance	Plus 10%, Minus 5%