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Multi-Purpose Furnaces
Complete heat-treating centers in one unit
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No. 258 (upper left), No. 252 (left), No. 147 (right)

 
Johnson multi-purpose furnaces incorporate various heat treating, drawing, and liquid bath furnaces into single units; versatility is thereby achieved at low cost in minimum floor space. Furnace blowers and piping are located beneath benches, to further utilize space.
 
NO. 252 TRIPLE-TREAT FURNACE
Compact combination unit provides a complete heat treating set-up including No. 568 pot type furnace for lead, cyanide, and salt hardening; No. 142 oven-type furnace for hardening carbon and high speed steels (temperature range of 1300 F. to 2350 F.), and No. 175 atmospheric drawing furnace (temperatures up to 1150 F.).
 
NO. 258 DUO FURNACE
This popular furnace combination includes the powerful Johnson No. 142 Oven Furnace for hardening (temp. range: 1300 F. to 2350 F.) and the Johnson No. 175 atmospherically fired furnace for pre-heating and drawing (temp. range: 400 F. to 1150 F.). Parts being heat treated can be easily transferred from one furnace to another.
 

Specifications:

Combination
Furnace
Number


Furnace
Included



Overall
Bench
Dimensions

(Inches)
Gas
Connection

(Inches)

Gas
Input

 

Approx.
Shipping
Weight


    H L W Pipe Size BTU/hr. Lbs.
252 142 Oven-175 Draw-568 Pot 64 80 22 1-1/4 295,000 1,550
258 142 Oven-175 Draw 64 60 22 1-1/4 215,000 1,200
253 142 Oven-580 Pot-175 Draw 64 80 22 1-1/4 330,000 1,450
259 120 Oven-150 Draw 48-1/2 60 22 1-1/4 140,000 530


Gas pressure: 4-1/2" to 14" W. C.   Nat. Gas; 11" W. C.   LP Gas

 

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