Forge Furnaces by Johnson

THE JOHNSON GAS APPLIANCE COMPANY was established in 1901. It has always pioneered in the development and manufacture of gas burning equipment of highest efficiency and quality.

Johnson Furnaces are perfect for the Artist, Blacksmith, & Sculptor!  The versatile Johnson Forge Furnaces provide the high, fast heat needed in heavy equipment shops, welding and metal forming shops, metal fabricating plants, auto spring manufacturers, blacksmithing, farm equipment and industrial maintenance shops, and school vocational shops.
 
Forges can be used for a variety of applications including metal bending, metal forging, occasional heat treating, metal forming and sharpening, preheating and stress relief of weldments. 

The forge body is made of heavy gauge steel construction with cast iron burner manifold and special steel tie-rod reinforcement. Fire boxes are heavily insulated and super duty hard-burned firebrick is used on all wearing surfaces. Gas and air adjustments are convenient to the operator. 

 Johnson Forge Furnaces come complete with quiet, powerful Johnson Blower, swinging adjustable refractory lid, adjustable front tool rack for supporting pieces, solenoid safety valve that shuts off gas when blowers are turned off, and exclusive Johnson Automatic Spark Ignition System. The need for matches is eliminated. Press a button and the furnace light automatically. 

Model No.133 is equipped with four burners (end burners may be turned off for smaller jobs when desired). The No.122 has two burners. Additional Furnace sizes available on request.

Forges can be used for a variety of applications including metal bending, metal forging, occasional heat treating, metal forming and sharpening, preheating and stress relief of weldments. 

The forge body is made of heavy gauge steel construction with cast iron burner manifold and special steel tie-rod reinforcement. Fire boxes are heavily insulated and super duty hard-burned firebrick is used on all wearing surfaces. Gas and air adjustments are convenient to the operator. 

Johnson Forge Furnaces come complete with quiet, powerful Johnson Blower, swinging adjustable refractory lid, adjustable front tool rack for supporting pieces, solenoid safety valve that shuts off gas when blowers are turned off, and exclusive Johnson Automatic Spark Ignition System. The need for matches is eliminated. Press a button and the furnace light automatically. 
 

Model No.133 is equipped with four burners (end burners may be turned off for smaller jobs when desired). The No.122 has two burners. Additional Furnace sizes available on request.

Click here to download Johnson Furnace Manuals

Special Order Only

Specifications:

Furnace
Number
 
Firebox Size
(Inches)
 
Overall Size
(Inches)
 
Burners
 
 
Blower
Number
 
Gas
Connect.
(Inches)
Gas
Input
 
Approx.
Shipping
Weight
  L W D L W H No.   Pipe Size BTU/hr. Lbs.
133 27 4-1/4 7 41 20 30 4 1203 1 400,000 510
133 Double Width 27 8-3/4 7 41 20 30 4 1203 1 400,000 510
 
122 13-1/2 4-1/4 7 27-1/2 20 30 2 1218 3/4 200,000 340
122 Double Width 13-1/2 8-3/4 7 27-1/2 20 30 2 1218 3/4 200,000 340
 
133 Double Length 54 4-1/4 7 74 20 48 8 2-1203 1-1/2 800,000 1200
133 Triple Width 27 13-1/2 7 41 29 48 8 2-1203 1-1/2 800,000 900
133 Special 36 18 7 41 36 48 12 2-1203 1-1/2 1,200,000 1190
133 Double Length,
       Double Width
54 8-3/4 7 80 30 48 8 2-1203 1-1/2 800,000 1200


Gas pressure: 4-1/4" to 14" W. C.   Nat. Gas; 11" W. C.  LP Gas

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Johnson Gas 122 Double Width Furnace with Thermocouple Safety Control

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Johnson Gas 122 Double Width Furnace with Ultra-Violet Safety Control

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Johnson Gas 133 Furnace with Thermocouple Safety Control

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Johnson Gas 133 Furnace with Ultra-Violet Safety Control

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Johnson Gas 133 Double Width Furnace with Thermocouple Safety Control

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Johnson Gas 133 Double Width Furnace with Ultra-Violet Safety Control

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Johnson Gas 133 Double Length Furnace with Ultra-Violet Safety Control

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Johnson Gas 133 Triple Width Furnace with Ultra-Violet Safety Control

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Johnson Gas 133 Special Width Furnace with Ultra-Violet Safety Control

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Johnson Gas 133 Double Length, Double Width Furnace with Ultra-Violet Safety Control

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