(847) 934-4500

Contact us today:

Tag Archives: rotary hearth oven

Three-level Rotary Hearth Oven for Curing Sealant

1029rtNo. 1029 is a 500ºF, three-level rotary hearth electric oven from Grieve, currently used for curing sealant onto molded plastic parts at the customer’s facility.  Workspace dimensions on this oven measure 36” W x 32” D x 30” H.   24 KW are installed in Incoloy-sheathed tubular elements to heat the oven chamber, while a 1000 CFM, 1-HP recirculating blower provides horizontal airflow, front to rear, across the workload.

This Grieve rotary hearth oven features 6” insulated walls, Type 304, 2B stainless steel interior, integral leg stand, an 8” W x 23” H front access opening built into the oven door and a 30” diameter three-level hearth constructed from perforated steel sheet and driven by a ¼-HP motor through a gear reducer with torque limiting device.

Controls onboard No. 1029 include a digital indicating temperature controller, manual reset excess temperature controller with separate contactors, recirculating blower airflow safety switch, circuit breaker disconnect switch plus a proximity switch and 12-tooth sprocket to index the hearth a 1/12 rotation per index.

For more information, please contact:

THE GRIEVE CORPORATION
500 Hart Road
Round Lake, IL 60073-2898
Phone: (847) 546-8225
Fax: (847) 546-9210
Web: www.grievecorp.com
Email: sales@grievecorp.com
Attention: Frank Calabrese, VP

Continue reading

500ºF Rotary Hearth Oven from Grieve

No. 816 is a 500ºF gas-fired, rotary hearth oven from Grieve, currently used for preheating and curing powder coatings onto electric motor parts.  Workspace dimensions on this oven measure 54” W x 54”D x 72”H.   350,000 BTU/HR are installed in a modulating gas burner, while a 4200 CFM, 3 HP recirculating blower provides horizontal airflow to the workload.

This Grieve rotary hearth oven features aluminized steel interior and exterior with 4” insulated walls.  Two 48” diameter hearths, constructed from rolled angles and covered with perforated metal, carry the loads in process.  Each hearth is designed to rotate for 15 seconds, every time the motor-operated vertical lift door is opened and closed.  The hearths are driven by a 1/3 HP motor through a gear reducer with torque limiting device.

All safety equipment required by IRI, FM and National Fire Protection Association Standard 86 for gas-fired equipment are onboard No. 816, including a 325 CFM, 1/3 HP powered forced exhauster.

For more information, please contact: THE GRIEVE CORPORATION, 500 Hart Road, Round Lake, Illinois 60073-2835 USA.  Phone: (847) 546-8225.  Fax: (847) 546-9210.  Web:www.grievecorp.com. Email: sales@grievecorp.com. Attention: Frank Calabrese.

Continue reading

500ºF Rotary Hearth Oven from Grieve

No. 847 is a 500oF electrically-heated, rotary hearth oven from Grieve, currently used for preheating magnesium alloy castings prior to a shrink fit operation, at a customer’s facility.

847 GrieveWorkspace dimensions of this oven measure 48” wide x 48” deep x 60” high.  34.8KW installed in Nichrome heating elements furnish the heat, while a 2000 CFM, 2-HP recirculating blower provides horizontal airflow across the load.

A two-tiered 44” diameter solid hearth with perforated separators at 900 is manually rotated during loading and unloading.

This Grieve oven features 4” insulated walls, an aluminized steel interior and exterior, plus two independent air-operated doors for access to the workspace.

Safety equipment is on-board to handle flammable solvents, including explosion-venting door hardware, manual reset excess temperature controller, back-up heating element relay, separately-powered forced exhauster, exhauster airflow safety switch, recirculating blower airflow safety switch and purge timer.

For more information, please contact:

THE GRIEVE CORPORATION
500 Hart Road
Round Lake, IL  60073-2898
Phone:  (847) 546-8225
Fax:  (847) 546-9210
Web:  www.grievecorp.com
Email:  sales@grievecorp.com
Attention:  Frank Calabrese, VP

Continue reading

500°F Electric Rotary Hearth Oven from Grieve

815 GrieveGrieve Corporation introduces No. 815, a 500°F electric rotary hearth oven, currently in use for preheating gears at a customer’s facility.

Workspace dimensions inside this unit measure 76” wide x 76” deep x 24” high.  A 72” diameter rotary hearth is constructed from angle rings with 90 1-3/8” wide x 7-3/8” long x 3-5/8” high slots to hold the workpieces on edge while processing.  The hearth is driven by a 1/4 HP motor through a gear reducer with torque limiting device.  The hearth indexes one position each time the loading door is opened and closed.

Two 2000 CFM, 2 HP recirculating blowers provide a vertical downward airflow over the workload.  Special safety equipment for handling flammable solvents is featured on this Grieve rotary hearth oven, including a manual reset excess temperature controller, separate heating element control contactors, a 325 CFM powered exhauster, and a purge timer.

No. 815 features an aluminized steel interior and exterior, plus 4” insulated oven walls.  The unit was entirely designed, engineered, built and full tested by Grieve.

For more information, please contact:

THE GRIEVE CORPORATION
500 Hart Road
Round Lake, IL  60073-2898
Phone:  (847) 546-8225
Fax:  (847) 546-9210
Web:  www.grievecorp.com
Email:  sales@grievecorp.com
Attention:  Frank Calabrese, VP

Continue reading

1000ºF Electric Rotary Hearth Oven

982 GrieveNo. 982 is a 1000ºF, electrically-heated rotary hearth oven from The Grieve Corporation, currently used for heat treating machined metal shafts at a customer’s facility.  Workspace dimensions measure 24” W x 11” D x 30” H with a 26” dia. hearth constructed from overlapping steel plates with 24 pipes holding pin inserts to support the workpieces.   24 KW installed in Incoloy sheathed tubular heating elements provide power, while a 1000 CFM, 1 HP recirculating blower provides radiant horizontal airflow to the workload.  An additional cooling blower is mounted beneath the loading table to cool the parts in the front middle three positions of the hearth.

The hearth is driven by a 1/4 HP motor through a gear reducer with torque limiting device, variable from 0.1 to 0.5 revolutions per hour.  A loading table is provided in front of the oven to hold extra pin inserts (shown in photo).

This oven features an aluminized steel exterior and interior, an exhaust hood around the openings in the face of the unit with a 130 CFM exhaust fan, plus an integral oven leg stand.  The 8” thick wall insulation comprises 2” of 1900ºF block and 6” of 10 lb/cf density rockwool.

Controls on the No. 982 include a digital indicating temperature controller, manual reset excess temperature controller with separate contactors, recirculating blower airflow safety switch, fused disconnect switch and a 10” circular chart recorder.

For more information, please contact:

THE GRIEVE CORPORATION
500 Hart Road
Round Lake, IL  60073-2898
Phone:  (847) 546-8225
Fax:  (847) 546-9210
Web:  www.grievecorp.com
Email:  sales@grievecorp.com
Attention:  Frank Calabrese, VP

Continue reading