Cold Gun Air Coolant System @EXAIR For Technical Assistance, Call An EXAIR Application Engineer 1-800-903-9247 Toll Free FAX (866) 329-3924 • E-mail: [email protected] • www.exair.com 214 Purdue University Study Confirms Benefits Of The EXAIR Cold Gun Tooling costs a lot of money to replace. That’s only part of the problem. As the tools wear out, you can expect: If you could just make the tooling last longer, you’d not only cut the tool cost but could increase profits by reducing scrapped parts and downtime. A long term study on the effect of refrigerated air on tool wear in wood machining was conducted at the Forestry Products Department of Purdue University by Ms. Judith Gisip. The project was under the direction of Dr. Rado Gazo (department professor) and Harold Stewart (professor at North Carolina State University with 35 years in wood machining research). Wood is brutal on tooling. In metalworking, most of the heat goes away with the machined chip. Wood is an excellent insulator and doesn’t conduct the heat away, which keeps it all there at the tool. Temperatures can exceed 1472°F (800°C)! The extensive tests at Purdue were conducted in a 70°F climate controlled room. They tested (4) 1/2" (12.7mm) two-flute cutters on a CNC router at 16,000 rpm. (22) sheets of 3/4" thick MDF (medium density fiberboard) were fed one at a time, cutting away 1/4" (6mm) depth of cut on each pass. Power consumption of the CNC was recorded (current draw increases as the tool starts to dull). When finished, the surface of the tools was examined using a scanning electron microscope. Machining with the Cold Gun’s 20°F air reduced tool wear by over 21% compared to the results with no cooling. For complete details of the Purdue study, visit our web site at www.exair.com/purdue.htm. • Slowed production and downtime to change out the tooling • Poor tolerances and decreased dimensional accuracy due to increased temperature • Increased cutting force is required (generates more heat and uses more electricity) Cold Gun Aircoolant Systems Model 5215 Cold Gun System (one cold outlet) includes Cold Gun, Single Point Hose Kit, 3/8" (10mm) Cone Nozzle, 1-1/4" (32mm) Fan Nozzle, Manual Drain Filter Separator. Model 5315 Cold Gun System (two cold outlets) includes Cold Gun, Dual Point Hose Kit, (2) 1/4" (6mm) Cone Nozzles, (2) 1" (25mm) Fan Nozzles, Manual Drain Filter Separator. Model 5230 High Power Cold Gun System (one cold outlet) includes High Power Cold Gun, Single Point Hose Kit, 3/8" (10mm) Cone Nozzle, 1-1/4" (32mm) Fan Nozzle, Automatic Drain Filter Separator. Model 5330 High Power Cold Gun System (two cold outlets) includes High Power Cold Gun, Dual Point Hose Kit, (2) 1/4" (6mm) Cone Nozzles, (2) 1" (25mm) Fan Nozzles, Automatic Drain Filter Separator. Accessories and Components Model # Description Model # Description 5015 Cold Gun Only 9005 Oil Removal Filter, 3/8 NPT, 15-37 SCFM (425-1,048 SLPM) 5030 High Power Cold Gun Only 9012 Manual Shutoff Valve, 1/4 NPT 5901 Single Point Hose Kit (Included with 5215 and 5230) 9020 Solenoid Valve, 120V, 50/60Hz, 1/4 NPT, 40 SCFM (1,133 SLPM) 5902 Dual Point Hose Kit (Included with 5315 and 5330) 9021 Solenoid Valve, 200-240V, 50/60Hz, 1/4 NPT, 40 SCFM (1,133 SLPM) 9003 Manual Drain Filter Separator, 1/4 NPT, 27 SCFM (765 SLPM) 9031 NEMA 4/4X Solenoid Valve, 24VDC, 1/4 NPT, 40 SCFM (1,133 SLPM) 9004 Automatic Drain Filter Separator, 1/4 NPT, 43 SCFM (1,359 SLPM) A Dual Point Hose Kit is recommended when heat is generated over a larger surface area. Purdue’s CNC router turns (22) 4'x8' sheets into sawdust. EXAIR’s Cold Gun is mounted under the protective guard. Cold air from EXAIR’s Model 5315 Cold Gun System keeps the tooling cool. Cold Gun Aircoolant System How Much Can You Save? . A 1/2” two flute router bit for wood is approximately $67. . The 21% reduction in tool wear when using a Cold Gun is $67 x 0.21 = $14.07 savings per bit. . If you use (1) router bit per working day, the savings is $14.07 x 5 working days = $70.35 per week / $3,658 per year For One Bit!
