Wheel Specifications
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OSA certified & European safety standard friable grain makes a good general-purpose wheel, excellent on large surface areas. DA - The combination of A and WA is ideal for precision grinding operations such as large surface grinding. There are two main categories of grain: Maximum safe operating speed Wheel dimensions Diameter Aluminium Oxide, for grinding high-tensile steels, i.e. hardened or high-speed steels. Silicon Carbide, for grinding low-tensile steels, cast iron, carbides, and non-ferrous metals. CGW Grain Types A - Brown Aluminium Oxide: the most common of all grains, this grain is used for heavy-duty general-purpose work. Grain Size Brown Aluminium Oxide High performance Aluminium Oxide White Aluminium Oxide White Aluminium Oxide+Blue Bond Very Fine White Aluminium Oxide+Red Bond White Aluminium Oxide+Yellow Bond White Aluminium Oxide+Special Bond I White Aluminium Oxide+Special Bond II Special grain and bond for improved surface integrity Pink Aluminium Oxide Ruby Aluminium Oxide 10% Ceramic Aluminium Oxide 30% Ceramic Aluminium Oxide 50% Ceramic Aluminium Oxide White and Brown Aluminium Oxide Semi-friable Aluminium Oxide Monocrystal Aluminium Oxide Wheel Dimensions Bubble alumina External Diameter Green Silicon Carbide AS - Ceramic Aluminium Oxide: ceramic grain, blended with white aluminium oxide, creates a wheel with maximum grinding performance and long life. Excellent for form holding and cool cut. Available in AS1, AS3, AS5. Black Silicon Carbide Internal diameter (bore) PA - Pink Aluminium Oxide: this tough but BAS - Blue Fired Aluminium Oxide: improved, specially prepared grain for centerless grinding. SA (94A) - Semi-friable Aluminium Oxide: its principal use is in cylindrical and centerless grinding wheels. It can be used to grind both soft and hard steels. WA - White Aluminium Oxide: the high friability of this grain enables fast and cool cutting. Suitable for light grinding of steels of all kinds, particularly tool steel. Reinforced Resinoid WAB (AZ) - White Aluminium Oxide + Blue Bond: particularly suited for grinding HSS over 55 RC. Provides exceptionally cool, fast cutting action. Requires minimum dressing. Also available as WAR - White Aluminium Oxide + Red Bond, when there is a need to differentiate from AS. RA - Ruby (Red) Aluminium Oxide: harder than PA and WAB, this grain is good for use on highchromium steel. WAY - White Aluminium Oxide + Yellow Bond: used primarily in wheels that require a very open structure. For creep-feed grinding with continuous dressing. WAG - White Aluminium Oxide + New CGWdeveloped Bond: used primarily in wheels with a very open structure. Excellent for creep-feed grinding with non-continuous dressing. WAP - White Aluminium Oxide + New CGWdeveloped Bond: special wheels for 80 M/S cutting speed. Designed to perform light, fast passes over the blade or other workpiece. WAL - Special wheel designed for creepfeed grinding. Contains a unique combination of special grain and bond which enables improved form holding and longer life span. The wheel is characterized by interconnected pores, which enable maximum cooling action and stock removal. HA (32A) - Monocrystalline Aluminium Oxide: a strong, sharp grain, suitable for a wide range of materials and applications. Especially suitable for use on high-alloy steels that are sensitive to heat. C - Black Silicon Carbide: sharper than aluminium oxide and therefore more effective in grinding low-tensile materials and nonferrous metals. GC - Green Silcon Carbide: more friable than C, recommended for grinding cemented carbide cutting tools. KA - Bubble Alumina: for grinding soft, malleable materials such as rubber and polyester. 9 Technical Information The CGW grinding wheel is made up of abrasive grains held together by a bond. By varying the type of bond, and the structure of the wheel, it is possible to produce innumerable grinding characteristics. Abrasive Grain Wheel specification Technical Information Wheel Specifications

Grain size ("MESH" size) is determined by the number of openings per linear inch in the smallest standard mesh through which the given grain will pass and larger grains will not. Thus a fine grain will be designated by a larger number than a coarse grain. Grade (Hardness) The grade of a wheel is designated by a letter of the alphabet from A (soft) to Z (hard) and indicates the ability of the bond to hold the abrasive grains together. The type and amount of bond used determine the hardness of the wheel. In a soft grade wheel, grains that have been worn down are released quickly in order to...

Standard Types and Shapes of Abrasive Wheels Types and profiles of CGW abrasives are marked in accordance with international standards. E Thickness around bore Depth of second recess Diameter of flat outer surface Diameter of flat inner surface Length of segment or abrasive wheel Depth of release on one side O Depth of release on other side Thickness (general) Second angle of (profiles) Standard Profiles