MOULD AND DIE INDUSTRY 108 / NORTON WINTER PRECISION TECHNOLOGY TOOL GRINDING MOUNTED PINS / GRINDING WHEELS – SUMMARY AND RECOMMENDATIONS FOR USE BOND TYPE VITRIFIED BOND Abrasive cBN (diamond on request) Bond designation Vitrified Features Extremely high grit retention; protection against abrasion; very good profiling characteristics, highly porous, thus good transport for the cooling lubricant into and chip removal from the contact zone Application areas Predominantly hardened chrome steels, HSS and tool steels RECOMMENDED USE Grinding wheel shape 1A1W mounted pins and 1A8 grinding wheels Grit size dk B15 - B126 Bond "N7 Bore" (glass ceramic system); VSS (cBN ceramic) Circumferential speed vc 40–80 m/s, please observe nperm Table feed rate vf 0.1...2 m/min Workpiece speed nw 100...1000 min-1 Infeed ae 0.002...0.020 mm Coolant Oil and emulsion IMPORTANT NOTES WHEN USING MOUNTED PINS (SEE ALSO PAGE 100) 1A1W MOUNTED PINS IN VITRIFIED BOND SHAPE D T CLAMPING LENGTH L3 MIN NPERM (1/min) CLAMPING LENGTH L3 MAX NPERM (1/min) 1A1W 3.0 6.0 10.0 16.000 52.0 139.000 1A1W 4.0 6.0 10.0 16.000 52.0 137.000 1A1W 5.0 6.0 10.0 16.000 52.0 144.000 1A1W 6.0 6.0 10.0 32.000 52.0 150.000 1A1W 6.0 8.0 10.0 32.000 50.0 150.000 1A1W 7.0 6.0 10.0 32.000 52.0 136.000 1A1W 7.0 8.0 10.0 31.000 50.0 136.000 1A1W 8.0 6.0 10.0 32.000 52.0 120.000 1A1W 8.0 10.0 10.0 30.000 48.0 120.000 1A1W 9.0 6.0 10.0 31.000 48.0 106.000 1A1W 10.0 6.0 10.0 30.000 52.0 96.000 1A1W 10.0 10.0 10.0 27.000 48.0 96.000 1A1W 12.0 6.0 10.0 29.000 52.0 80.000 1A1W 12.0 12.0 10.0 25.000 46.0 80.000 1A1W 14.0 6.0 10.0 28.000 52.0 68.000 1A1W 15.0 6.0 10.0 27.000 52.0 64.000 1A1W 15.0 15.0 10.0 20.000 43.0 64.000 1A1W 16.0 6.0 10.0 27.000 52.0 60.000 1A1W 18.0 6.0 10.0 25.000 52.0 53.000 1A1W 20.0 6.0 10.0 24.000 52.0 48.000 1A1W 24.0 6.0 10.0 22.000 52.0 40.000 nperm (rpm) according to clamping length L MOULD AND DIE INDUSTRY ID GRINDING - VITRIFIED BONDS
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