500°F Rotary Hearth Oven Cures Powder Coatings

Grieve’s No. 816 is a 500°F gas-fired, rotary hearth oven designed to preheat and cure powder coatings onto electric motor parts.

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Grieve’s No. 816 is a 500°F gas-fired, rotary hearth oven designed to preheat and cure powder coatings onto electric motor parts. With a workspace measuring 54 × 54 × 72 inches, the oven features 350,000 Btu/hr installed in a modulating gas burner, while a 4,200-cfm, 3-hp recirculating blower provides horizontal airflow to the workload.

The oven also features an aluminized steel interior and exterior with 4-inch insulated walls. Two 48-inch-diameter hearths, constructed from rolled angles and covered with perforated metal, carry the loads in process. Each hearth is designed to rotate for 15 sec every time the motor-operated vertical lift door is opened and closed. The hearths are driven by a ⅓-hp motor through a gear reducer with torque-limiting device.

The oven includes all safety equipment required by IRI, FM and National Fire Protection Association Standard 86 for gas-fired equipment, including a 325-cfm, ⅓-hp forced exhauster. 

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