CHICAGO — At NPE 1997, Sterling Inc.'s Sterlco unit unveiled the prototype of a cast-iron water pump with an optional jacket or collar that is formed using lost-core molding.
Sterling, based in Milwaukee, molds ductile cast iron over fired-green sand and then vibrates out the sand, leaving a hollow jacket.
Chilled water flows through the jacket, continuously cooling the unit and extending the life of the pump's seal, according to Jeffrey Jensen, Sterlco product manager. Development began in late 1995, and beta testing started in January at six sites using various temperature ranges.
Within three months, Jensen expects to market the pump in models with one-half to 3 horsepower.
Sterling's exhibit at the Chicago show, held June 16-20, included 10 other new or redesigned products from its auxiliary equipment lines.
Scrap recovery systems under the Ball & Jewell brand included the Vision VG1634 granulator and the Vision BPV68 series of beside-the-press granulators.
The VG1634 has a 40-HP motor, a heavy-duty outer chassis of ductile iron and an inner chamber liner system of replaceable steel plates. Sterling is selling the unit for $29,000 for a limited time; market price is $32,000.
The compact, portable BPV68 series offers size reduction of sprues, runners and small rejected parts and carries a standard list price of $4,990.
Process heating and cooling units under the Sterlco Vision banner include its model 4016M oil temperature control system, at $4,400, model 4411 compact temperature control system at $1,800; model 442, the smallest temperature control system, starting at $1,500; model 4412 upright temperature control unit, at $2,100; high-efficiency portable chillers from $2,800-$6,200; and the 50- to 200-ton SF cooling towers, at $4,500-$13,200.
The midrange 4016M provides control of processing temperatures as high as 450° F. The usual limit is 400° F.
The new portable chillers include scroll compressors and brazed plate evaporators.
Two controllers from the Sterltech unit were shown. The terminal for the new speed-teach-stair, or STS, controller can be hand-held or mounted near press controls.
An upscale Bosch Rho 3.0 computer numerically controlled servo control has more speed and improved capability for input and response.