Cartridge & Immersion Heaters

 

STANDARD CARTRIDGE HEATERS LOW TO MEDIUM WATT DENSITY

Standard Cartridge Heater
Availability: In Stock
Description

U.L. Recognized – E56973
C.S.A. Certified – 016386-0-000

Cartridge Heaters: Low to Medium Watt Density In Stock

Application

Compressor Crankcase Heating, Copiers, Dies, Food Processing, Glue Pots, Heat Sealing, Hot Melt Adhesive, Labeling, Medical Equipment, Packaging, Photographic Processing, Plastic Molding, Platens, Wax Pots.

Features
  • Backer Hotwatt Precision Cartridge Heaters provide localized heat to restricted work areas requiring close thermal control. Dies, Platens, and a variety of other types of processing equipment are efficiently heated. Closely controlled work temperatures up to 1250°F are obtained by a combination of heater location and proper wattage output.
  • Basic designs are readily adaptable to a wide variety of special requirements, sizes, or ratings.
  • Maximum surface temperatures up to 1250°F.
  • Designations are etched on the sheath to preserve accurate shape.
  • Heating elements arranged just beneath outside surface for maximum heat transfer, minimum core temperature and faster heating.
  • Made in U.S.A.
  • Where specified, units can be supplied liquid tight.
  • Long, trouble free service.
Construction
Standard Cartridge Heater Construction Illustration
  1. Mica.
  2. Series 300 stainless steel sheath of precision dimensions and tolerances for intimate,stable, non-oxidizing contact with cavities machined for them.
  3. Element wire situated in close proximity to outside surface for maximum heat transfer and minimum internal temperature while preserving good dielectric qualities.
  4. Magnesium oxide packing.
  5. Ceramic element support.
  6. Ceramic cap.
  7. Teflon insulated leads: 1/4″ diameter.
    Fiberglass leads: 5/16″ – 3/4″ diameter.
    Post terminals: 15/16″ – 2 3/8″
Round

Lengths between or longer than those listed may be ordered..

Diameter: 1/8″ (.124/120)

5/32″ (.155/152)

3/16″ (.186/.183)

Maximum Amperage: 2 Not UL/CSA

2 Not UL/CSA

3.5

Sheath
Length

Cat.No.

Min.
Watts

Max.
Watts

Cat.No.

Min.
Watts

Max.
Watts

Cat.No.

Min.
Watts

Max.
Watts

1″

SC12-1

10

15

SC15-1

10

15

SC18-1

10

20

1 1/2″

SC12-1.5

10

25

SC15-1.5

10

25

SC18-1.5

10

32

2″

SC12-2

10

35

SC15-2

10

35

SC18-2

10

44

2 1/2″

SC12-2.5

10

45

SC15-2.5

10

45

SC18-2.5

10

55

3″

SC12-3

10

55

SC15-3

10

55

SC18-3

10

70

3 1/2″

SC12-3.5

10

65

SC15-3.5

10

65

SC18-3.5

10

80

4″

SC12-4

10

75

SC15-4

10

75

SC18-4

10

95

4 1/2″

SC12-4.5

10

85

SC15-4.5

10

85

SC18-4.5

10

107

5″

SC12-5

10

95

SC15-5

10

95

SC18-5

10

120

5/12″

SC12-5.5

10

105

SC15-5.5

10

105

SC18-5.5

10

132

6″

SC12-6

10

115

SC15-6

10

115

SC18-6

10

145

6 1/2″

SC12-6.5

10

125

SC15-6.5

10

125

SC18-6.5

10

157

7″

SC12-7

10

135

SC15-7

10

135

SC18-7

10

170

7 1/2″

SC12-7.5

10

145

SC15-7.5

10

145

SC18-7.5

10

182

8″

SC12-8

10

155

SC15-8

10

155

SC18-8

10

195

8 1/2″

SC12-8.5

10

165

SC15-8.5

10

165

SC18-8.5

10

207

9″

SC12-9

10

175

SC15-9

10

175

SC18-9

10

220

9 1/2″

SC12-9.5

10

185

SC15-9.5

10

185

SC18-9.5

10

232

10″

SC12-10

10

195

SC15-10

10

195

SC18-10

10

245

10 1/2″

SC12-10.5

10

205

SC15-10.5

10

205

SC18-10.5

10

257

11″

SC12-11

10

215

SC15-11

10

215

SC18-11

10

270

11 1/2″

SC12-11.5

10

225

SC15-11.5

10

225

SC18-11.5

10

282

12″

SC12-12

10

235

SC15-12

10

235

SC18-12

10

295

Red catalog number denotes stock item. See stock section for specific ratings.


For longer lengths, compute
wattage at:
10 watts per linear 1/2″

 

10 watts per linear1/2″

 

12 watts per linear 1/2″

Wattage

Minimum Wattage -The following table should be used to determine the allowable voltage for low wattage miniature elements:

Size:

1/8″ Diameter – 5/32″ Diameter

3/16″ Diameter

Length

30v

60v

120v

230v

30v

60v

120v

230v

1″

.6w

2.5w

10w

NA

.8w

3w

12w

NA

1 1/2″

.6w

2.5w

10w

NA

.5w

2w

8w

30w

2″

.5w

2w

8w

27w

.4w

1.5w

6w

22w

NA – Not Available

Diameter: 1/4″ (.249/.245)

5/16″ (.311/.307)

3/8″ (.374/.370)

Maximum Amperage: 3.5

6

6

Sheath
Length

Cat.No.

Min.
Watts

Max.
Watts

Cat.No.

Min.
Watts

Max.
Watts

Cat.No.

Min.
Watts

Max.
Watts

1″

SC25-1

10

25

SC32-1

10

35

SC37-1

10

35

1 1/2″

SC25-1.5

10

50

SC32-1.5

10

70

SC37-1.5

10

70

2″

SC25-2

10

75

SC32-2

10

105

SC37-2

10

105

2 1/2″

SC25-2.5

10

100

SC32-2.5

10

140

SC37-2.5

10

140

3″

SC25-3

10

125

SC32-3

10

175

SC37-3

10

175

3 1/2″

SC25-3.5

10

150

SC32-3.5

10

210

SC37-3.5

10

210

4″

SC25-4

10

175

SC32-4

10

245

SC37-4

10

245

4 1/2″

SC25-4.5

10

200

SC32-4.5

10

285

SC37-4.5

10

285

5″

SC25-5

10

225

SC32-5

10

325

SC37-5

10

325

5 1/2″

SC25-5.5

10

250

SC32-5.5

10

360

SC37-5.5

10

360

6″

SC25-6

10

275

SC32-6

10

395

SC37-6

10

395

6 1/2″

SC25-6.5

10

300

SC32-6.5

10

430

SC37-6.5

10

430

7″

SC25-7

10

325

SC32-7

10

465

SC37-7

10

465

7 1/2″

SC25-7.5

10

350

SC32-7.5

10

500

SC37-7.5

10

500

8″

SC25-8

10

375

SC32-8

10

535

SC37-8

10

535

8 1/2″

SC25-8.5

10

400

SC32-8.5

10

570

SC37-8.5

10

570

9″

SC25-9

10

425

SC32-9

10

605

SC37-9

10

605

9 1/2″

SC25-9.5

10

450

SC32-9.5

10

640

SC37-9.5

10

640

10″

SC25-10

10

475

SC32-10

10

675

SC37-10

10

675

10 1/2″

SC25-10.5

10

500

SC32-10.5

10

710

SC37-10.5

10

710

11″

SC25-11

10

525

SC32-11

10

745

SC37-11

10

745

11 1/2″

SC25-11.5

10

550

SC32-11.5

10

780

SC37-11.5

10

780

12″

SC25-12

10

575

SC32-12

10

815

SC37-12

10

815

Red catalog number denotes stock item. See stock section for specific ratings.


For longer lengths, compute
wattage at:
25 watts per linear 1/2″

 

35 watts per linear1/2″

 

35 watts per linear 1/2″

Diameter: 1/2″ (.499/.494)

5/8″ (.624/.619)

3/4″ (.749/.741)

Maximum Amperage: 10

10

15

Sheath
Length

Cat.No.

Min.
Watts

Max.
Watts

Cat.No.

Min.
Watts

Max.
Watts

Cat.No.

Min.
Watts

Max.
Watts

1″

SC50-1

10

55

SC62-1

10

60

1/2″

SC50-1.5

10

100

SC62-1.5

10

120

SC75-1.5

40

140

2″

SC50-2

10

145

SC62-2

10

180

SC75-2

40

210

2 1/2″

SC50-2.5

10

190

SC62-2.5

10

240

SC75-2.5

40

280

3″

SC50-3

10

235

SC62-3

10

300

SC75-3

40

350

3 1/2″

SC50-3.5

10

280

SC62-3.5

10

360

SC75-3.5

40

420

4″

SC50-4

10

325

SC62-4

10

420

SC75-4

40

490

4 1/2″

SC50-4.5

10

370

SC62-4.5

10

480

SC75-4.5

40

560

5″

SC50-5

10

415

SC62-5

10

540

SC75-5

40

630

5 1/2″

SC50-5.5

10

460

SC62-5.5

10

600

SC75-5.5

40

700

6″

SC50-6

10

505

SC62-6

10

660

SC75-6

40

770

6 1/2″

SC50-6.5

10

550

SC62-6.5

10

720

SC75-6.5

40

840

7″

SC50-7

10

595

SC62-7

10

780

SC75-7

40

910

7 1/2″

SC50-7.5

10

640

SC62-7.5

10

840

SC75-7.5

40

980

8″

SC50-8

10

685

SC62-8

10

900

SC75-8

40

1050

8 1/2″

SC50-8.5

10

730

SC62-8.5

10

960

SC75-8.5

40

1120

9″

SC50-9

10

775

SC62-9

10

1020

SC75-9

40

1190

9 1/2″

SC50-9.5

10

820

SC62-9.5

10

1080

SC75-9.5

40

1260

10″

SC50-10

10

865

SC62-10

10

1140

SC75-10

40

1330

10 1/2″

SC50-10.5

10

910

SC62-10.5

10

1200

SC75-10.5

40

1400

11″

SC50-11

10

955

SC62-11

10

1260

SC75-11

40

1470

11 1/2″

SC50-11.5

10

1000

SC62-11.5

10

1320

SC75-11.5

40

1540

12″

SC50-12

10

1045

SC62-12

10

1380

SC75-12

40

1610

Red catalog number denotes stock item. See stock section for specific ratings.

For longer lengths,compute
wattage at:

 

45 watts per linear 1/2″

 

60 watts per linear 1/2″

 

70 watts per linear 1/2″

Diameter: 15/16″ (.936/.928)

1″ (.999/.991)

1 1/4″ (1.249/1.241)

Maximum Amperage: 25

25

30

Sheath
Length

Cat.No.

Min.
Watts

Max.
Watts

Cat.No.

Min.
Watts

Max.
Watts

Cat.No.

Min.
Watts

Max.
Watts

2″

SC93-2

50

280

SC1.0-2

50

280

SC1.2-2

100

350

2 1/2″

SC93-2.5

50

375

SC1.0-2.5

50

375

SC1.2-2.5

100

470

3″

SC93-3

50

470

SC1.0-3

50

470

SC1.2-3

100

590

3 1/2″

SC93-3.5

50

565

SC1.0-3.5

50

565

SC1.2-3.5

100

710

4″

SC93-4

50

660

SC1.0-4

50

660

SC1.2-4

100

830

4 1/2″

SC93-4.5

50

755

SC1.0-4.5

50

755

SC1.2-4.5

100

950

5″

SC93-5

50

850

SC1.0-5

50

850

SC1.2-5

100

1070

5 1/2″

SC93-5.5

50

945

SC1.0-5.5

50

945

SC1.2-5.5

100

1190

6″

SC93-6

50

1040

SC1.0-6

50

1040

SC1.2-6

100

1310

6 1/2″

SC93-6.5

50

1135

SC1.0-6.5

50

1135

SC1.2-6.5

100

1430

7″

SC93-7

50

1230

SC1.0-7

50

1230

SC1.2-7

100

1550

7 1/2″

SC93-7.5

50

1325

SC1.0-7.5

50

1325

SC1.2-7.5

100

1670

8″

SC93-8

50

1420

SC1.0-8

50

1420

SC1.2-8

100

1790

8 1/2″

SC93-8.5

50

1515

SC1.0-8.5

50

1515

SC1.2-8.5

100

1910

9″

SC93-9

50

1610

SC1.0-9

50

1610

SC1.2-9

100

2030

9 1/2″

SC93-9.5

50

1705

SC1.0-9.5

50

1705

SC1.2-9.5

100

2150

10″

SC93-10

50

1800

SC1.0-10

50

1800

SC1.2-10

100

2270

10 1/2″

SC93-10.5

50

1895

SC1.0-1.5

50

1895

SC1.2-10.5

100

2390

11″

SC93-11

50

1990

SC1.0-11

50

1990

SC1.2-11

100

2510

11 1/2″

SC93-11.5

50

2085

SC1.0-11.5

50

2085

SC1.2-11.5

100

2630

12″

SC93-12

50

2180

SC1.0-12

50

2180

SC1.2-12

100

2750

For longer lengths,compute
wattage at:
95 watts per linear 1/2″

 

95 watts per linear 1/2″

 

120 watts per linear 1/2″

Diameter: 1.90″ (1.890/1.910)

2 3/8″” (2.365/2.385)

Maximum Amperage: 40

40

Sheath
Length

Cat.No.

Min.
Watts

Max.
Watts

Cat.No.

Min.
Watts

Max.
Watts

6″

SC1.9-6

500

1400

7″

SC1.9-7

500

1700

8″

SC1.9-8

500

1960

SC2.3-8

500

2300

9″

SC1.9-9

500

2240

SC2.3-9

500

2650

10″

SC1.9-10

500

2500

SC2.3-10

500

3000

12″

SC1.9-12

500

3100

SC2.3-12

500

3630

14″

SC1.9-14

500

3650

SC2.3-14

500

4300

16″

SC1.9-16

500

4200

SC2.3-16

500

5000

18″

SC1.9-18

500

4750

SC2.3-18

500

5600

20″

SC1.9-20

500

5300

SC2.3-20

500

6270

22″

SC1.9-22

500

5900

SC2.3-22

500

6930

24″

SC1.9-24

500

6450

SC2.3-24

500

7600

26″

SC1.9-26

500

7000

SC2.3-26

500

8250

28″

SC1.9-28

500

7550

SC2.3-28

500

8900

30″

SC1.9-30

500

8100

SC2.3-30

500

9570

32″

SC1.9-32

500

8700

SC2.3-32

500

10250

34″

SC1.9-34

500

9250

SC2.3-34

500

10900

36″

SC1.9-36

500

9800

SC2.3-36

500

11550

38″

SC1.9-38

500

10350

SC2.3-38

500

12200

40″

SC1.9-40

500

10900

SC2.3-40

500

12870

42″

SC1.9-42

500

11500

SC2.3-42

500

13530

44″

SC1.9-44

500

12000

SC2.3-44

500

14200

46″

SC1.9-46

500

12600

SC2.3-46

500

14850

48″

SC1.9-48

500

13200

SC2.3-48

500

15500

 

For longer lengths,compute wattage at:
280 watts per linear 1″

 

330 watts per linear 1″

* Lengths longer than those listed may be ordered.  

 
Wattage

The maximum wattage’s listed are computed at 60 watts per square inch of heated surface. With proper fit in a heat sink, long life may be expected at this watt density. Consult factory for higher watt density applications. Lower watt density will result in longer life. Any wattage within standard limits may be ordered without affecting price.

Voltage

Standard voltages are either 120V or 240V (subject to limits above). Lower voltages are available.

Termination

 All units up to 15/16″ diameter, within published amperage limits, are manufactured with 6″ (type SF1) leads, longer length leads are available. Standard insulation on 1/4″ units is Teflon (200°C); Fiberglass (250°C) is standard on units 5/16″ diameter and larger. All units 15/16″ and larger are manufactured with post terminals (type SF-3). Optional Type SF1 leads are available. Stock units supplied with 12″ leads.

Tolerances

Wattage tolerances are held to +5%, -10% at rated voltage. Diameter is always .001″ less, but not more than .009″ less, than the nominal (fractional) heater diameter except for 1.90″ and 2 3/8″ diameters. This sizing is maintained so that all units are a slide fit into a standard reamed hole of the size ordered. Thermal action will expand the unit to a snug fit for best heat conduction. If close hole tolerances are not maintained, operating life may be drastically reduced. See specific heater size for exact tolerances. Length tolerances are ± 2% with a 1/16″ minimum. Consult factory for closer tolerances.

How To Order

After determining the wattage required and the line voltage available, determine the physical space available for heaters and the number of heaters required.
Review Stock list for In-Stock Items.
Review Special Features.

Specify: Catalog number, wattage, voltage, lead type, and special features, if required.
Example: SC62-8.5/600W/240V/SF1-16/SF14-10