4.1 Flexible Tubular Heaters

|+| enlarge picture

Square stainless steel tubular heaters BASE-flex (1.4541) are a reliable industry standard for the use in heating platens and manifolds.

In contrast to traditional tubular heaters with a round section which have to be bent by machines, square BASE-flex can be fitted into any rectangular groove with simple hand tools. Moreover, the square shape results in a bigger heat emitting area of up to 80% compared with a corresponding round section. Finally, the easy manual mounting saves the usually high technical expenditure for casting-in / soldering / cementing of bent round tubular heaters.

A soft version of the BASE-flex, the NICKEL-flex (2.4068) is available as special execution. Due to the soft, easy to form nickel material, the NICKEL-flex is suitable for manual mounting with hand tools in round sections, too. Furthermore, Nickel has a better capability to conduct heat compared with stainless steel.

Available terminals

Terminal pin	|+| enlarge picture Standard (from stock)	|+| enlarge picture On request with ceramic connector
Blade terminal 6,3 mm	|+| enlarge picture |+| enlarge picture Standard (from stock)	|+| enlarge picture |+| enlarge picture On request with M4-screw bracket
Threaded pin 6 x 6 mm M3 8 x 8 mm M3 6,5 mm M2,5 8,5 mm M4 10,0 mm M4	|+| enlarge picture On request please note the minimum order quantity	|+| enlarge picture On request with nut and washers
With fibreglass leads	|+| enlarge picture On request	|+| enlarge picture On request with protection sleeve

Fixing options

Screw-in nipple 6,5 mm 8,5 mm

|+| enlarge picture M14 x 1,5 in stainless steel (option) |+| enlarge picture M12 x 1,0 in brass (option)

Cross section	4,5 x 4,5 mm ± 0,15 5,0 mm ± 0,15	6 x 6 mm ± 0,15	8 x 8 mm ± 0,15
"flex"-Type	BASE-flex (NICKEL-flex on request)	BASE-flex (NICKEL-flex on request)	BASE-flex (NICKEL-flex on request)
min. bending radius	12 mm	15 mm	20 mm
unheated length	25 mm ±5	30 mm ±5	40 mm ±5
	Standard	Standard 6x6 BASE-flex available from stock	Standard
Total length [mm]	Power [W] 230 V
250	200	-	-
300	250	-	-
350	300	550	-
400	350	650	-
450	400	750	-
500	450	800	-
550	500	900	-
600	550	1000	-
650	600	1100	-
700	650	1200	-
750	700	1300	-
800	750	1350	-
850	800	1450	-
900	850	1550	2100
950	900	1650	-
1000	950	1750	2300
1050	-	1850	-
1100	-	1950	2500
1150	-	2050	-
1200	-	2100	2700
1250	-	2200	-
1300	-	2300	2900
1350	-	2400	-
1400	-	2500	3100
1450	-	2600	-
1500	-	2700	3300
1550	-	2800	-
1600	-	-	3500
1700	-	-	3700
1800	-	-	3900
1900	-	-	4100
2000	-	-	4300

CONSTRUCTIVE SPECIFICATIONS AND TOLERANCES Wattage + 5% - 10% Resistance + 10% - 5% Dielectric strength 1500 V Insulation (cold 1000 Vdc) > 10 MΩ Leakage current (cold) < 0,5 mA Maximum working temperature 750 °C Length tolerance ± 2% (min. ± 5 mm)