BL-D


Dumbbell Heating Elements consist of a hot zone with high electrical resistivity and rigidly connected with two thickened cold ends of low resistance owing to their larger diameter and special manufacturing technique. The particular connecting technique ensures perfect mechanical and electrical operation. Hot zones and cold ends are made of exceptionally homogeneous, self-bonded silicon carbide. The BL-D elements are manufactured in a range of 8 of 80 mm in hot zone diameter, 30 to 1500 mm in hot zone length and 90 to 2300 mm in total length. The heating rods are self-supporting and can be installed vertically or horizontally. The table below list standard rod dimensions. If necessary, rods with other hot zone and / or cold end lengths can be manufactured upon customer’s request.

Item No. Hot Zone Cold End Overall Length
(mm)
Hot Zone Surface Area
(cm2)
Resistance at 1400℃ rod temp
(Ohms)
(W±15%)
  Maximum permissible loading values per heating element at furnace temperature of
Diameter
(mm)
Length
(mm)
Diameter
(mm)
Length
(mm)
1200℃ 1400℃ 1500℃
BL-D8108.5       85 270     W 377 150 95
  8 100 14     25.0 2.4 V 30.1 19 15
BL-D81013       130 360     A 12.5 7.9 6.3
 
BL-D8158.5       85 320     W 565 228 145
  8 150 14     38.0 3.6 V 45.1 28.5 23
BL-D81515       150 450     A 12.5 7.9 6.3
 
BL-D8186       60 300     W 678 270 170
BL-D8188.5 8 180 14 85 350 45.0 4.4 V 54.6 34.5 27.5
BL-D81815       150 480     A 12.4 7.9 6.2
 
BL-D8208.5       85 370     W 754 300 185
  8 200 14     50.0 4.8 V 60.1 38 30
BL-D82015         500     A 12.5 7.9 6.2
 
BL-D82510       100 450     W 942 385 240
  8 250 14     63.0 6.2 V 76.4 49 38.5
BL-D82515       150 550     A 12.3 7.9 6.2
 
                W 1130 450 285
BL-D82308.5 8 300 14 85 470 75.0 7.4 V 91.5 58 46
 
                W 1507 600 380
BL-D8408.5 8 400 14 85 570 100.0 10.0 V 122.8 77 62
                A 12.3 7.7 6.2
 
                W 565 225 143 
BL-D121020 12 100 18 200 500 37.5 1.1 V 24.9 16 12.5
                A 22.7 14.3 11.4
 
                W 848 340 215
BL-D121520 12 150 18 200 550 56.5 1.7 V 38 24 19
                A 22.3 14.2 11.23
 
                W 1130 450 285
BL-D122020 12 200 18 200 600 75.0 2.2 V 49.9 31.5 25
                A 22.7 14.3 11.4
 
                W 1413 565 355
BL-D122520 12 250 18 200 650 94.0 2.8 V 62.9 40 31.5
                A 22.5 14.2 11.3
 
BL-D123020       200 700     W 1696 680 430
  12 300 18     113.0 3.4 V 75.9 48 38.3
BL-D123025       250 800     A 22.3 14.1 11.3
 
BL-D142025       250 700     W 1319 530 340
  14 200 20     88.0 1.8 V 48.7 31 25
BL-D142035       350 900     A 27.1 17.2 13.7
 
BL-D142525       250 750     W 1649 665 420
  14 250 20     110.0 2.2 V 60.2 38 30.5
BL-D142535       350 950     A 27.4 17.3 13.8
 
BL-D143025       250 800     W 1978 785 500
  14 300 20     132.0 2.6 V 71.7 45 36
BL-D143035       350 1000     A 27.6 17.4 13.9
 
BL-D144025       250 900     W 2638 1060 675
  14 400 20     176.0 3.5 V 96.1 61 48.5
BL-D144035       350 1100     A 27.5 17.4 13.9
 
BL-D145025       250 1000     W 3297 1320 835
  14 500 20     220.0 4.4 V 120.4 76 60.5
BL-D145035       350 1200     A 27.4 17.3 13.8
 
BL-D146025       250 1100     W 3956 1580 1000
  14 600 20     264.0 5.2 V 143.4 91 72
BL-D146035       350 1300     A 27.6 17.4 13.9
 
BL-D182525       250 750     W 2120 840 535
  18 250 25     141.0 1.3 V 52.5 33 26.5
BL-D182535       350 960     A 40.4 25.5 20.3
 
BL-D183025       250 800     W 2543 1020 645
BL-D183035 18 300 25 350 1000 170.0 1.7 V 65.8 41.5 33
BL-D183040       400 1100     A 38.7 24.5 19.5
 
BL-D184025       250 900     W 3391 1360 860
BL-D184035 18 400 25 350 1100 226.0 2.3 V 88.3 56 43.5
BL-D184040       400 1200     A 38.4 24.3 19.4
 
BL-D185025       250 1000     W 4239 1700 1080
BL-D185035 18 500 25 350 1200 283.0 2.7 V 107 68 54
BL-D185040       400 1300     A 39.6 25.1 20
 
BL-D186025       250 1100     W 5087 2040 1295
BL-D186035 18 600 25 350 1300 340.0 3.4 V 131.5 83 66.5
BL-D186040       400 1400     A 38.7 24.5 19.5
 
BL-D188025       250 1300     W 6782 2700 1710
  18 800 25     450.0 4.6 V 176.6 111 88.5
BL-D188035       350 1500     A 38.4 24.3 19.3
 
                W 3533 1410 900
BL-D253040 25 300 35 400 1100 236.0 1.0 V 59.4 37.5 30
                A 59.4 37.5 30
 
                W 4710 1900 1200
BL-D254040 25 400 35 400 1200 314.0 1.3 V 78.2 50 39.5
                A 60.2 38 30.4
 
                W 7065 2820 1800
BL-D256050 25 600 35 500 1600 470.0 2.0 V 118.9 75 60
                A 59.4 37.5 30
 
                W 9420 3800 2400
BL-D258050 25 800 35 500 1800 628.0 2.6 V 156.5 100 79
                A 60.2 38 30.4
 
                W 12717 5100 3230
BL-D309050 30 900 45 500 1900 850.0 1.9 V 155.4 98.5 78.5
                A 81.8 51.7 41.2
 
                W 14130 5650 3580
BL-D3010050 30 1000 45 500 2000 942.0 2.0 V 168.1 106 84
                A 84.1 53.2 42.3
 
                W 16956 6780 4295
BL-D3012050 30 1200 45 500 2200 1130.0 2.4 V 201.7 128 101.5
                A 84.1 53 42.3
 
                W 21195 8480 5370
BL-D3015040 30 1500 45 400 2300 1413.0 3.0 V 252.2 159 127
                A 84.1 53.2 42.3
 

Note:
* Products with special shapes are manufactured to meet the requirements of size, application and operating conditions.