Tempco Custom Heater Manufacturing

Ceramic BAND HEATER SPECIFICATIONS AND TOLERANCES

Performance Ratings

Maximum Temperature: 1400°F (760°C)

Nominal Watt Density: 20-45 W/in2 (3-7 W/cm2 )

Maximum Watt Density: 45 W/in2 (7 W/cm2 )

Electrical Ratings

Maximum Voltage: 480 VAC per termination

Dual Voltage: Available depending on heater configuration

Maximum Amperage:

  • Lead Wire Termination: 12.5A
  • Screw Terminations: 25A

Resistance Tolerance: +10%, –5%

Wattage Tolerance: +5%, –10%

Exposed electrical wiring on band heater installations is a violation of Electrical Safety Codes including O.S.H.A.

Physical Size Construction Limitations

Sheath Material: Stainless Steel

Insulation Material: Ceramic Fiber Blanket
Standard Insulation Thickness: 1/4" (6.4 cm)
Double Insulation Thickness: 1/2" (12.7 cm)

Overall Thickness:

Insulation Type Dia. less than 4" Dia. 4" or greater
Standard Standard Optional
Standard .5" (12.7 cm) .625" (15.9 cm) 1/2" (12.7 mm)
Double .688" (17.5 cm) .75" (19.1 cm) 11/16" (17.5 mm)
Ribcage
(Uninsulated)
.344" (8.7 cm) .5" (12.7 cm) 11/32" (8.7 mm)

 

Minimum Width: 1" (2.54 cm)
Standard Width Increments: 1/8" (3.2 cm)
Consult Tempco for non-standard widths.
Maximum Width:

  • One-Piece & Two-Piece:
    • Dependent upon the ratio of diameter to width
    • Maximum Width to Diameter Ratio is 3:1
    • Maximum Width for 5" or greater ID is 15"
  • Reverse Band: 4" (101.6 mm)

 

Width Tolerance:

1" (25.4 cm) to 3-1/2" (88.9 cm) ±1/16" (±1.6 cm)
4" (101.8 cm) to 6-1/2" (165.1 cm) ±1/8" (±3.2 cm)
Over 6-1/2" (165.1 cm) ±1/4" (6.4 cm)

 

Minimum Diameter:
One-Piece: 2" (50.8 mm)
Two-Piece: 4" (101.6 mm)
Reverse Band: 5-1/2" (139.7 mm)

Maximum Diameter:
One-Piece – 21" (533.4 mm)
Two-Piece & Reverse Band – 44" (1,117.6 mm)

Nominal Gap: 3/8" (9.5 cm) — If a larger gap is required for probes or thermocouples, specify when ordering.

If tighter tolerances are required consult Tempco.

Construction / Clamping Min. ID Min. Width Max. ID
in mm in mm in mm
One-Piece 2  50.8 1  25.4 21  533.4
Two-Piece 4 101.6 1  25.4 44 1117.6
Reverse Band 5.5 139.7 1  25.4 44 1117.6
Standard Insulation 2  50.8 1  25.4 n/a
Double Insulation 2  50.8 1  38.1 n/a
Rib Cage (RCC) 3  76.2 1 114.3 n/a
Built-In Bracket 2  50.8 1  25.4 n/a
Built-In Bracket Spring Loaded 2  50.8 1  25.4 n/a
Latch and Trunnion 4 101.6 1  25.4 n/a
Bent-Up Flange 2  50.8 1  25.4 n/a
Shell Overlap 3  76.2 1  38.1 20  508.0

Note: Refer to individual Construction and Termination Descriptions (pages 1-66 through 1-74 in our catalog) for further information.
Actual heater minimums and maximums will depend upon the combination of construction/clamp, termination styles and electrical ratings.

Type R – Uninsulated Ceramic Band Heater Specifications and Tolerances

Performance Ratings

Maximum Watt Density: 50 W/in2 (8 W/cm2)
Maximum Temperature: 900°F (482°C)

Mechanical Ratings

Standard Width Increments: 1/8" 3.2 cm
Maximum Width: depends on ratio of diameter to width
Minimum Width: 1" (25.4 mm)
Standard Gap: 3/8" ±1/8" (9.5 ±3.2 mm)

Electrical Ratings

Resistance tolerance: +10%, –5%
Wattage tolerance: +5%, –10%
Maximum Voltage: 480 single or 3-phase (when applicable)
Maximum Amperage:
Screw Terminals: 25 Amps per circuit
Lead Wire: 10 Amps per circuit

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CORPORATE HEADQUARTERS

607 North Central Avenue
Wood Dale, IL 60191-1452 USA
Phone: 630.350.2252   Toll Free: 888.268.6396
Fax: 630.350.0232   Email: info@tempco.com

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We have Branch Offices located across the United States.


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Phone: 52.55.2451.4070
Fax: 52.55.5561.6889
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Website: www.tempcomexico.com


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