^ SPECIALTY TOOLS ♦ WHIIKISS = thlHH Mandrels ^ MOUNTED POINTSTypes of Abrasive Grain “Abrasive Grain” is a general term of very hard abrasive particles for polishing and grinding. Abrasive Grain is harder than work materials and functions to grind work materials. Abrasive Grain is classified generally into three types. Alumina type Primary ingredient is alumina (aluminium oxide : A 6203). A : For rough grinding of iron and steel materials, low carbon steels, forged products, castings and raw steel materials. WA : For general grinding of alloy steels, tool steels and carbon steels. PA : For general grinding of heat treated alloy steels, tool steels, and stainless steels. Silicon Carbide type Primary ingredient is silicon carbide (SiC). C : For general grinding of cast iron, chilled cast iron, copper, bronze, brass, aluminum and non ferrous metals. GC : For general grinding of super hard alloys, ceramics, stone, jewelry, glass, pottery, wood and synthetic resins. Mixed Abrasive Grain type Mixed use of abrasive grain of the same type PA • W : For precision grinding of high speed steel, alloy steels, tool steels and special alloys. A • WA : For rough grinding of iron and steel materials, low carbon steels, forged products, castings, steel materials and stainless steels. Bonding Material- Material used to bond and hold abrasive grains. Primary bonding materials are shown below. V (vitrified) : Mainstream of magnetic bonding material, grinding stone B (resinoid) : Bonding material is mainly made of thermosetting R (rubber) : Hard rubber E (shellac) : Thermoplastic resin (natural resin) Hardness Grade- This shows bonding strength of abrasive grain, bonding materials and wear resistance of grinding stone. The Hardness Grade is measured by various instruments. The hardness is classified from A to Z, A is the softest while Z is the hardest. Hardness Grade EFGH I JKLMNOPQRST~Z ■4 Very soft ►-< Soft Medium ►-« Hard Very Hard ► 1.6 mm shank diameter series. Short Shank Type grindstones for high-speed rotation. Ideal for very small parts. *Order in standard package quantities. 02.0

Diamond / CBN Carbide Cutters Specialty Tools| Mounted Points Rubberized Abrasives Flap Wheels Polishing Brushes Felt Bobs Abrasive compounds NSK Exclusive Tools & Polishing Tools ^ MOUNTED POINTS 4 MHANkB 3.0 mm shank diameter series. Perfect for high surface finishing, precision work. 6.0 mm shank diameter series. High quality finishing grindstones. *Order in standard package quantities. P.32

Diamond / CBN Carbide Cutters Specialty Tools! Mounted Points Rubberized Abrasives NSK Exclusive Tools MOUNTED POINTS RUBBERIZED ABRASIVES Grinding disk for metal grinding, slitting and cutting. Can easily be attached to mandrels (P.29) * Mandrel is purchased separately. 1.6 mm shank diameter series. Short type for high-speed rotation. Ideal for grinding very small parts. 2.34 mm shank diameter series. Perfect for precision finishing and deburring. Abrasive Power Grinding Power Rubber Hardness Soft Grinding Power wa High Shine Polisher Abrasive Power ★★★★★★ Grinding Power ★★☆☆☆☆ Rubber Hardness...