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Temperature range: 1300°F. to 2350°F. (manual operation)
600°F. to 2350°F. (automatic operation)
Johnson's
rugged, low cost heat treating furnaces have been in wide use in
industrial tool rooms, tool and die shops, assay labs and school
shops, for over 80 years. These powerful, highly efficient furnaces
are designed to meet the demands of industrial heat treating for
speed, accuracy, efficiency and durability.
RUGGED
CONSTRUCTION: Massively built of heavy gauge steel with special fire
box reinforcement and cast iron doors, front sections and burner
ports.
FULLY
INSULATED: Over 3 inches of highest quality insulating fire brick
insures efficient, low-cost operation and comfortable working
conditions.
HIGH SPEED
DESIGN: Blast type burners and Johnson's powerful blowers insure fast
heat up and even temperatures. (1500°F.
in 15 minutes; 2300°F. in 50 minutes).
EASY, SAFE
OPERATION: All Johnson Hi Speed furnaces are equipped with Ultra
Violet safety systems. They also feature push button spark ignition
lighting and solid state air controllers that insure simple, accurate
furnace adjustment and operation.
OTHER
FEATURES: Furnace door (Nos. 125 & 142) opens upward with ratchet
arrangement allowing parts to be inserted or withdrawn without fully
opening the door. Special tool steel foil wrap is also available. (See
page 4.)
AUTOMATIC
TEMPERATURE CONTROLS: Fully automatic temperature controls are
recommended for Johnson Heat Treating Furnaces. Johnson Engineers have
developed a highly accurate control system. (See pages 16 and 17).
This control system extends the furnace temperature range to
600°F.-2350°F. The equipment is housed in the furnace cabinet which is
convenient for the operator, protects this equipment from shop
hazards, and provides valuable sound proofing.
(L) No. 142 Double Length with Ultra
Violet Safety and (R) No. 120 with Console and Ultra Violet Safety. |
(L) No. 142 with Manual Operation and
Ultra Violet Safety System and (R) No. 125 with Ultra Violet Safety
System and automatic temperature control.
NOS. 121 AND
143
HEAT TREATING AND FORGE FURNACES
Popular
adaptation of the standard No. 142 and No. 120 Furnaces. Especially
suitable for the shop where light forging is done as well as heat
treating. Special hard refractory bottom and hearth rests are
provided. The hearth plate is used for heat treating; plate is
removed for forge work so the parts to be forged can be placed on
hearth rests.
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Furnace Number |
Firebox Dimensions
(inches) |
Overall Dimensions
(inches) |
Door Opening
(inches) |
Hearth Size
Work Area
(inches) |
Gas Input |
Approx. Ship Weight |
|
125 |
H |
W |
L |
L |
W |
H |
H |
W |
L |
W |
BTU |
Lbs |
|
12 |
13 |
16.5 |
35 |
27 |
73 |
12 |
11.25 |
16 |
9.5 |
180,000 |
675 |
|
125 Special Length |
12 |
13 |
23.5 |
43 |
27 |
73 |
12 |
11.25 |
23 |
9.5 |
180,000 |
800 |
|
125 Double Length |
12 |
13 |
33 |
53 |
27 |
73 |
12 |
11.25 |
32 |
9.5 |
400,000 |
990 |
|
142 |
7 |
13 |
16.5 |
26 |
27 |
58 |
7 |
11.25 |
16 |
9.5 |
180,000 |
580 |
|
142 Special Length |
7 |
13 |
23.5 |
33.5 |
27 |
58 |
7 |
11.25 |
23 |
9.5 |
180,000 |
770 |
|
142 Double Length |
7 |
13 |
33 |
43 |
27 |
58 |
7 |
11.25 |
32 |
9.5 |
400,000 |
895 |
|
143 |
6.25 |
13 |
16.5 |
26 |
27 |
58 |
6.25 |
11.25 |
16 |
9.5 |
180,000 |
600 |
|
143 Double Door |
6.25 |
13 |
16.5 |
26 |
27 |
58 |
6.25 |
11.25 |
16 |
9.5 |
180,000 |
650 |
|
120 Bench |
5 |
7.75 |
13.5 |
13.5 |
19.5 |
22 |
5 |
7.75 |
13.25 |
5 |
90,000 |
184 |
|
120 Pedestal |
5 |
7.75 |
13.5 |
19.5 |
22 |
48 |
5 |
7.75 |
13.25 |
5 |
90,000 |
216 |
|
121 Pedestal |
4.25 |
7.75 |
13.5 |
19.5 |
22 |
48 |
4.25 |
7.75 |
13.25 |
5 |
90,000 |
226 |
|
121 Double Door |
4.25 |
7.75 |
13.5 |
19.5 |
22 |
48 |
4.25 |
7.75 |
13.25 |
5 |
90,000 |
300 |
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The 125 Pedestal and 142 Double Length Furnaces
utilize 1" gas pipe connections. All others are .75"
connections. |
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Gas Pressure: 4.5" to 14" W.C. Natural Gas: 11" W.C.
LP Gas. |
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Above furnaces, except 142 and 125 Double Length,
are furnishes with No. 1218 Blower. The 142 and 125 Double
Length include No. 1207 Blower |
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