Collets and Sleeves SMC Milling Chuck Sleeves Catalog Numbering System • One-piece design. • Cutting tool must be cylindrical and have a through hole when using coolant. • Cutting tool shank requirement tolerance is h6 and Ra ≥ 0,3 μm (12 μ in) surface finish. • Maximum collapse is h6. 20SMC120M 20 SMC 120 M System Size Sleeve Style Sleeve Bore Size Identification Value 20 = 20mm SMC = Milling Chuck metric (xx.x) M = Sleeve bore size built 25 = 25mm 010 = 1mm to metric values 32 = 32mm 160 = 16mm (blank) = 75 = 3/4" 245 = 24,5mm Sleeve bore size built to metric values 10 = 1" inch (x.xxx) 12 = 1-1/4" 0125 = 1/8" 0500 = 1/2" 1000 = 1" WWW.WIDIA.COM I7