FN Series

FN Series

Atmosphere Box Furnace With Certifiable Uniformity Of +/-5°F From 300°F (150°C) To 2200°F (1200°C)

Description:

The FN Series Electric Box Furnaces feature extremely uniform temperature gradients over a wide temperature range, and atmosphere tight construction. Two uniformity ranges are offered:+/-10°F (+/-5°C) and +/-5°F (+/-3°C). Several important features are combined to achieve uniformity within the defined work zone. These features are uniform distribution of elements, fan circulation of furnace atmosphere, all ceramic fiber insulation, six zones of element control, SCR power control, generous extra area inside the furnace for air circulation and to keep direct radiation of elements at a minimum, and a very tight gasketed and interlocked door seal. Atmospheres may be air, inert or combustible. The uniformity specification is guaranteed from 300°F (150°C) to the maximum temperature of the furnace. The maximum temperature rating depends on the type of fan used, type of elements, and grade of insulation. Three temperature ranges are offered: 1800°F (980°C), 2000°F (1095°C), and 2200°F (1200°C). These furnaces are ideal for aviation work or any critical heat treating that requires certifiable uniformity. The design details are carefully thought out for convenience of use, service and flexibility. See just how good the uniformity of the FN Series furnace: Look at a PDF of an actual uniformity test.

Power Source:
Electric
Loading:
Front
Atmosphere:
Air or Inert or Nitrogen/Propane
Lining:
Ceramic Fiber

Our most popular model sizes are listed below. Discuss a custom solution that fits your exact needs by contacting our sales team today.

Model #
Internal Dimensions
W
H
D
Hearth
W
D
Outside Dimensions
W
H
D
Uniform Dimensions
W
H
D
Max Load (Lbs)
Ship Weight (Lbs)
Max Temp (°F)
Standard Pwr (kW)
High Pwr (kW)
FN222
36
48
36
24
24
72
185
65
24
24
24
400
5500
2200
40
60
FN223
36
48
48
24
36
72
185
77
24
24
36
600
6000
2200
55
80
FN324
48
48
60
36
48
84
185
89
36
24
48
1200
7500
2200
90
125
FN326
48
48
84
36
72
84
185
113
36
24
72
1800
9000
2200
125
175
FN434
60
60
60
48
48
96
226
89
48
36
48
1600
9000
2200
120
165
FN436
60
60
84
48
72
96
226
113
48
36
72
2400
10000
2200
150
225
FN545
72
72
72
60
60
108
238
101
60
48
60
2500
10000
2200
155
225
FN546
72
72
84
60
72
108
238
113
60
48
72
3000
11000
2200
180
265
FN555
72
84
72
60
60
108
240
101
60
60
60
2500
11000
2200
160
225
FN646
84
72
84
72
72
120
240
113
72
48
72
3600
13000
2200
225
300
FN666
84
96
84
72
72
120
240
113
72
72
72
3600
15000
2200
240
315

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