Modular furnace system

A motor comprising:

• a motor housing having a motor end plate;
• a motor disposed in the motor housing;
• a shaft rotatably connected to the motor in the motor housing and extending through an opening in the motor end plate of the housing;
• and
• a sealed bearing within the motor housing surrounding the shaft comprising a sealed bearing including two compliant rotating lip seals.

A furnace comprising:

• at least one module comprising a frame, a removable cover mounted to the frame, exterior cover panels on the frame, and an insulated case fastened to the interior of the module, the case defining a process area;
• a conveyor assembly disposed to extend through the process area in the insulated case from an entry area to an exit area to convey product through the process area;
• a plurality of process zones within the module, at least one zone comprising a cooling zone comprising a sealed cooling plenum mounted to an interior of the case;
• and
• a cooling unit disposed within the frame, ducting between the cooling plenum and the cooling unit configured to gas to the cooling unit and to direct cooled gas from the cooling unit to the cooling plenum.