Tools of the Trade
December 2007
Rotary oven
Grieve offers No. 815, a 500°F (260°C) electric rotary hearth oven with workspace dimensions of 76 x 76 x 24 in (1930 x 1930 x 610 mm). The 72-in (1830-mm) diameter rotary hearth is constructed from angle rings with slots to hold the workpieces on edge while processing and is driven by a 0.25 hp (0.186 kW) motor through a gear reducer with torque-limiting device that indexes one position each time the loading door is opened and closed. Two 2000-ft³/min (56,635-L/min), 2-hp (1.5-kW) recirculating blowers provide a vertical downward airflow over the workload. Features include special safety equipment for handling flammable solvents, including a manual reset excess temperature controller, separate heating element control contactors, a 325 ft³/min (9200 L/min) powered exhauster, and a purge timer.
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