48 Grinding Chicago Pneumatic Abrasive T ools have all the benefts of advanced ergonomics… with the features required to enhance the physical and mental well-being operators need to achieve increased productivity levels: . Signifcant sound and vibration reduction - helps reduce operator fatigue and improve performance. . Complete line - designed for maximum productivity under rugged conditions. . Wide choice of tools - die grinders, small wheel grinders, horizontal grinders, and vertical grinders. . Powerful, yet complete and lightweight - produce more power per pound than comparable electric models. . Air powered - Minimal risk of electrical shock or overheating - even with continuous use. Other Features: . Rugged construction - to withstand tough use. . Head treated internal parts - keep tool operating, minimize repairs. . Easy to service - simple replacement of rotor blades usually restores original power . . Wide variety of accessories - extended versatility of the tool. Er G o N omi C F EA T ur ES Coll ET G ri N d E r S The choice of burr depends on the size of your application. A larger volume of material to be removed will require a bigger size of abrasive. Select the tool rpm depending on the diameter of the burr head, the material to be ground and the material in the rotary burr . Use tungsten carbide burrs for hard and tough materials. High speed steel burs are recommended for unhardened and medium hard materials. See table. Recommended speeds depending on the machined and the diameter of the head of the carbide burrs . Diameter of the head of the carbide burrs Material T ype 1/8" (3 mm) 1/4" (6 mm) 3/8" (10 mm) 1/2" (12 mm) 5/8" (16 mm) speed (RPM) Steel 60,000 - 90,000 45,000 - 60,000 30,000 - 40,000 22,500 - 30,000 18,000 - 24,000 T empered steel 60,000 - 90,000 30,000 - 45,000 19,000 - 30,000 15,000 - 22,500 12,000 - 18,000 Stainless steel 60,000 - 90,000 30,000 - 45,000 19,000 - 30,000 15,000 - 22,500 12,000 - 18,000 Casting 45,000 - 90,000 22,500 - 60,000 15,000 - 40,000 1 1,000 - 30,000 9,000 - 24,000 T itanium 60,000 - 90,000 30,000 - 45,000 19,000 - 30,000 15,000 - 22,500 12,000 - 18,000 Nickel 60,000 - 90,000 30,000 - 45,000 19,000 - 30,000 15,000 - 22,500 12,000 - 18,000 Copper & copper alloys 45,000 - 90,000 22,500 - 60,000 15,000 - 40,000 1 1,000 - 30,000 9,000 - 24,000 Aluminium 30,000 - 90,000 15,000 - 70,000 10,000 - 50,000 7,000 - 3,8000 6,000 - 30,000 Plastics 30,000 - 90,000 15,000 - 70,000 10,000 - 50,000 7,000 - 3,800 6,000 - 30,000 Cermet 60,000 - 90,000 30,000 - 45,000 19,000 - 30,000 15,000 - 22,500 12,000 - 18,000 Small precision deburring: die grinding is performed with either tungsten carbide, high speed steel burrs or mounted points. Carbide Burrs Mounted Points Wh EE l G ri N d E r S Pure material removal, regardless of whether it is removed from a cramped or an open space. is determined by the power generated at the grinding process. The applied feed force and the rotation of the wheel generates a cutting force which multiplied by the peripheral speed of the wheel represents the power removing material (power = peripheral speed x cutting force). Chicago Pneumatic grinders features a high degree of safety . Safety throttles, over-speed shut-of f and wheel guards are good examples of product safetey features carried by your grinders. The table below will help you to translate the peripheral speed of the grinding wheel to the correct rotational speed of the grinder when using a specifc diameter of grinding wheel. How ensure safe operation: . Check the tool free speed . Match the maximum speed of the abrasive to the grinder . Inspect the grinding wheel . Inspect the fange . Inspect the wheel guard 1 W ear protection goggles, gloves & hearing protection . T est run your grinder in a protected area after assembling the wheel . Make sure that the tools receive proper maintenance, see service sheet 2 Disconnect the tool from the air network before changing accessories abrasives. Maximum work speed in m/s or Feet/Min Diameter in. (mm) 32 35 40 50 63 80 100 125 6,300 6,890 7,875 9,842 12,401 15,750 19,685 24,600 1 (25) 24,450 26,740 30,560 38,200 48,130 61,120 76,390 95,490 1-1/4 (32) 19,100 20,890 23,870 29,840 37,600 47,750 59,680 74,600 1-9/16 (40) 15,280 16,710 19,100 23,870 30,080 38,200 47,750 59,680 2 (50) 1,220 13370 15,280 19,100 24,060 30,560 38,200 47,750 2-1/2 (63) 9,700 10,610 12,130 15,160 19,100 24,250 30,320 37,890 3 (80) 7,640 8,360 9,550 1 1940 15,040 19,100 23,870 29,840 4 (100) 6,1 10 6,680 7,640 9,550 12,030 15,280 19,100 23,870 5 (125) 4,890 5,350 6,1 10 7,640 9,630 12,220 15,280 19,100 6 (150) 4,070 4,460 5,090 6,370 8,020 1,190 12,730 15,920 7 (180) 3,400 3,710 4,240 5,310 6,680 8,490 10,610 13,260 7-7/8 (200) 3,060 3,340 3,820 4,780 6,020 7,640 9,550 1 1,940 9 (230) 2,660 2,910 3,320 5,150 5,230 6,640 8,300 10,380 9-27/32 (250) 2,440 2,670 3,060 3,820 4,810 6,1 10 7,640 9,550 1 1-13/16 (300) 2,040 2,230 2,550 3,180 4,010 5,090 6,370 7,960