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.
SM 300/06/HA – SM 2000/08/HA
T max 650 °C and 850 °C

Information

: SM800/06/HA

: SM3000/04/HA

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

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

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.
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

Information

: SM500/08/VA

: SU380/06/VA - Furnace for annealing springs in baskets

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

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