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Air-circulation Pit-type Furnaces

Air-circulation Pit-type Furnaces
with horizontal air circulation Air-circulation pit-type furnaces are supplied for operating temperatures between 450°C and 850°C. Heavy parts or baskets can be easily loaded from the top using a crane. The furnaces have a hinged lid or a backwards sliding lid, both are pneumatically driven. Air-circulation Pit-type Furnaces
SM 300/06/HA – SM 2000/08/HA
T max 650 °C and 850 °C

Rugged case designs made of high-grade sheet steel
Inner liner made of heat-resistant stainless steel > Long service life, extremely resilient, corrosion resistant
High-quality heating elements with long service life
Horizontal air circulation > Excellent temperature uniformity up to +/-5 K in accordance with DIN 17052
High-grade insulation > Low energy consumption, low operating costs

: SM 800/06/HA

: SM 3000/04/HA

Technical Data

Model T max
[°C] Inside dimensions
[mm]
[width x depth x height] Volume
[l] Outside dimensions
[mm]
[width x depth x height] Power
[kW] Voltage
[V] Weight
[kg]

SM   300/06/HA 650 700 x 600 x 650 270 1600 x 2300 x 1200 18 400 3/N 360

SM   550/06/HA 650 900 x 800 x 750 540 1800 x 2500 x 1300 24 400 3/N 600

SM 1000/06/HA 650 1000 x 1000 x 1000 1000 1700 x 2700 x 1600 36 400 3/N 890

SM 1500/06/HA 650 1500 x 1000 x 1000 1500 2200 x 2700 x 1600 60 400 3/N 1240

SM 2000/06/HA 650 2000 x 1000 x 1000 2000 2700 x 2700 x 1600 75 400 3/N 1750

SM   300/08/HA 850 700 x 600 x 650 270 1600 x 2300 x 1200 24 400 3/N 380

SM   550/08/HA 850 900 x 800 x 750 540 1800 x 2500 x 1300 36 400 3/N 630

SM 1000/08/HA 850 1000 x 1000 x 1000 1000 1700 x 2700 x 1600 48 400 3/N 930

SM 1500/08/HA 850 1500 x 1000 x 1000 1500 2200 x 2700 x 1600 64 400 3/N 1290

SM 2000/08/HA 850 2000 x 1000 x 1000 2000 2700 x 2700 x 1600 90 400 3/N 1830

Other sizes on request

Air-circulation Pit-type Furnaces
with vertical air circulation Air-circulation pit-type furnaces with vertical circulation are especially
suitable for heat treatment of bulk materials with a high mass, such as springs or gear wheels loaded in baskets. Models featuring air-guidance cylinders enable very homogenous heating of batches. Air-circulation Pit-type Furnaces
SU 220/06/VA – SU 380/06/VA for T max 650 °C
SM 500/08/VA – SM 1700/08/VA for T max 850 °C
Furnaces with round air-guidance cylinders for charging with several round baskets in stacks
Highly efficient circulation fans with very high air speed
Vertical air circulation
Superb temperature uniformity up to +/-3 K in accordance with DIN 17052, also with non-uniform basket batches
Heated from all sides with high-quality heating elements with long service life
High-grade insulation > Low energy consumption, low operating costs
Pneumatic cover drive
Semi-gastight version with inert-gas connector available as option

SM 500/08/VA

SU 380/06/VA - Furnace for annealing springs in baskets

Technical Data

Model T max
[°C] Inside dimensions
[mm]
Ø x height* Volume
[l] Outside dimensions
[mm]
[width x depth x height] Power
[kW] Voltage
[V] Weight
[kg]

SU   220/06/VA 650 630 x 700 220 1100 x 1100 x 1580 24 400 3/N 420

SU   310/06/VA 650 630 x 1000 310 1100 x 1100 x 1880 32 400 3/N 490

SU   380/06/VA 650 630 x 1200 380 1100 x 1100 x 2080 36 400 3/N 540

SM   500/08/VA 850 800 x 1000 500 1600 x 1800 x 2400 50 400 3/N 1450

SM   800/08/VA 850 1000 x 1000 800 1800 x 1800 x 2400 70 400 3/N 1700

SM 1000/08/VA 850 1000 x 1300 1000 1800 x 2100 x 2700 90 400 3/N 1850

SM 1700/08/VA 850 1200 x 1300 1500 2000 x 2100 x 2700 120 400 3/N 2300

* Diameter x height of air-guidance cylinder · Other sizes on request