Industry’s single source for heat treat and melting solutions
Pit Furnaces
Lindberg/MPH offers a wide variety of pit type furnaces (also known as Top Loading Furnaces) in fuel fired or electric powered configurations that are easy to operate and control. These top loading furnaces have rugged, reinforced shells and high quality insulation. They are engineered to provide long service life, ease of maintenance and optimum thermal efficiency.
Article: The Versatility of the Pit Furnace 
Pit Vacuum Furnace
Lindberg/MPH offers a wide variety of pit furnaces in fuel fired or electric powered configurations that are easy to operate and control.
Key Specifications
- Temperature range up to 1750°F
- Work diameters up to 96” diameter
- Vacuum levels down to 10 micron
- Accelerated cooling available
Corrtherm Element Pit Furnace
The Corrtherm pit furnace offers a unique combination of hig performance and low maintenance at temperatures up to 1850°F.
Key Specifications
- Temperature Range: to 1850°F
- Inert or Combustible Atmosphere Capable
- Ideal for cell/JIT installations
- Low power consumption and fast cycle times.
Steam HOMO Pit Furnace
Featuring a compact design, these units are ideal for direct production line installation.
Key Specifications
- Temperature Range: up to 1250°F
- Steam or inert Atmosphere Capable
- Lightweight ceramic module insulation
- High reliability
HOMO Tempering Pit Furnace
The Lindberg HOMO® tempering furnace is an electrically heated pit style furnace capable of temperatures up to 1400°F. The furnace is top loading with a gasket-sealed work chamber. Heavy gauge alloy spiral heaters completely surround the work load providing high heat transfer efficiency.
Key Specifications
- Temperature Range: up to 1400°F
- Dense load production capabilities with turbine-type fan and heavy duty motors
- Proven components that deliver long service life
- Inert or Combustible Atmosphere Capable
HOMO Nitriding Pit Furnace
These electric-powered pit furnaces are available in single or two stage nitridng systems and are designed for applications that require high resistance to fatigue, impact and continuous metal-to-metal friction.
Key Specifications
- Chamber Size: 1.43 to 99.5 cubic feet
- Lower finishing costs-minimizes warpage, distortion, galling, and seizing
- Improved corrosion resistance-especially if parts are not subjected to a final finishing operation after nitriding
HOMOCARB Pit Furnace
These electric powered pit furnaces are designed to work with protective carbonaceous atmosphere.
Key Specifications
- Temperature Range: up to 1750°F
- Inert or Combustible Atmosphere Capable
- Microprocessor-based controls
- Optional automatic atmosphere control system
Cyclone Electric Pit Furnace
The cyclone pit furnace has been used for tempering, normalizing, solution treatment of aluminum and annealing for many decades.
Key Specifications
- Temperature Range: up to 1250°F
- Uniformity: ± 10°F
- Inert or Combustible Atmosphere Capable
- High velocity recirculating fan
Cyclone Gas-Fired Pit Furnace
The cyclone pit furnace has been used for tempering, notmalizing, solution in treatment of aluminum and annealing for many decades.
Key Specifications
- Temperature Range: up to 1250°F
- Uniformity: ±10°F
- Inert or Combustible Atmosphere Capable
- Complete, prewired, freestanding control panel with disconnect switch
Cyclone Gas-Fired Retort Pit Nitriding Furnace
Gas-fired pit furnaces with built-in retort available in single or two-stage nitriding systems. Cyclone gas-fired pit furnaces are capable of temperatures up to 1250°F (1400°F optional). The furnaces have a separate heating/fan chamber that provides heat to the work chamber.
Key Specifications
- Chamber Size: 4.8 to 118.6 cubic feet
- Temperature Range: up to 1250°F
- Inert or Combustible Atmosphere Capable
- Optional afterburner
Cyclone Electric Retort Pit Nitriding Furnace
Electric-powered pit furnaces with built-in retort available in single or two-stage nitriding systems. Cyclone electric-powered pit furnaces are capable of temperatures up to 1250° (1400°F optional). the furnaces have a separate heating/fan chamber that provides heat to the work chamber.
Key Specifications
- Chamber Size: 4.8 to 118.6 cubic feet
- Temperature Range: up to 1250°F
- Inert or Combustible Atmosphere Capable
- Optional ammonia dissociators
Pit Furnace Companion Quench Tank
Key Specifications
- Choice of electrical or gas-heated
- Easy top loading chamber from overhead crane
- Complete, pre-wired free standing control panel with disconnect switch
- Sight gauge for quick check of liquid level with automatic low level arm
Rod Overbend Element Pit Furnace
The Rod Overbend (RO) pit furnace gives you flexible, efficient performance in a variety of heat treat applications including annealing, normalizing and hardening at temperatures up to 1850°F (2000°F optional).
Key Specifications
- Temperature Range: to 1850°F
- Inert or Combustible Atmosphere Capable
- Standard endothermic atmosphere system
- Easy-loading vertical chamber
