PRODUCT APPLICATION & SELECTION CUTTING-OFF (REINFORCED) This section covers engineered wheels that would be ordered by grain and grade. For lower cost general purpose wheels referto the Typical Machines Used Gemini Section (pages M44 and M45). Allison deSanno Sever-All Cut-off wheels containing a strengthening fabric or filaments in- American Chain Emerson Stanley Elec corporated throughout the entire diameter are referred to as "rein- Approved Devices Everett Stone forced wheels". Those having either internal or external reinforcing Campbell Fox Syncro which interacts at the grinding face are termed "fully reinforced Coleman Herzog Tabor wheels". Those partially reinforced cut-off wheels, having strength- Continental Setco enina material onlv around the hole and flanae area, are called "zone reinforced wheels". This latter category is classified W Type American Chain and Cable Co., Allison-Campbell Div. (non-reinforced) and is covered in the preceding section. Bridgeport, CT. Reinforced wheels are designed to resist breakage caused by severe cross bending. All portable cut-off, swing frame, locked head push Spindle MachinelModel Wheel Size* SpeedlRPM throuah. and foundrv. cho~. stroke o~erationsreauire reinforced cut- off wheels. In addition, a reinforced'cut-off wheel is required on any r~ever-AllMachines 1- I 1 operation where the grinding machine is hand guided or where the ?~dry--b*~ work is not securely clamped. 2B-dry-bar type 20 x '/a x 1 Wheels are Type 1 configuration with diameters ranging from %"to --- 72". The most popular sizes range from 3" to 30" in diameter. The 3A-dry-bar type 26 x %, x 1 maximum hole size is limited to one-fourth the wheel diameter. The 20 x '/a x 1 2150 wheel thickness is determined by grit size, construction and wheel 52A-dry-Rotary 20 x '/a x 1 I diameter, however, maximum thickness is less than 'A''. -- Abrasive Cutting Machines General Information for Cut-Off Wheels .-4 . 12 x X, x 1 1 5200 Abrasives: For most metals - ferrous and non-ferrous NO. 20-dry-bar type 16 x '/a x 1 4200 ALUNDUM 8 (exception: CRYSTOLON recommended for NO. 28-drv-bar tv~e 18x '/a x 1 2450 (Aluminum Titanium). Use RegularALUNDUM fordurabil- / 1 Ox~de) ity on severe operations, and 57A or 23A for cool cutting on heat-sensitive materials. Treated For dry applications U treated Alundums in- *Wheel Shape - Type 1 ALUNDUM crease wheel durability. CRYSTOLON 8 For non-metallics such as plastics, glass and (Silicon Carb~de) ceramics. Approved Devices CO. Grit Size: Spindle Use as coarse a grit as possible, commensurate with burr require- MachinelModel Wheel Size' SpeedlRPM ments. Coarse grits cut faster and cooler but burr can be minimized Dry Cut Cut-Off (can be (6, 7 or 8) x X, x % 4000 by using finer grits. provided for wet cutting) 1 Grade (Hardness): *Wheel Shape - Type 1 Use as hard a grade as possible for maximum wheel durability. Softer grades tend to re-sharpen more readily and should be used on the more difficult to cut materials for better cutting quality at the Continental Machine Tool CO., Irvine, CA. expense of higher wheel wear. Spindle 1 Structure: I MachinelModel Wheel Size" speedl~~~1 Wheels of higher structure numbers have greater durability but are I Ulticut slower cutting. The effect of going higher in structure number is Manual feed control, somewhat similar to using harder letter grades (usually omitted in ~ miterlstraight newer cut-off bond systems). *Wheel Shape - Type 1 Speeds: Reinforced wheels up to 16" diameter can be approved for use as high as 16,000 SFPM. For wheels over 16" diameter, the A.P. de Sanno & Son, Phoenixville, PA. maximum is 14,200 SFPM. (see ANSI Code 87.1 - Table 20 Classifications 9 and 10) 1 MachinelModel Wheel Size" s~eedlRPM1 Maximum operating speed for most commonly used diameters of GR-201-Dry Nonon reinforced cut-off wheels are: (semi-automatic) Diameter Spindle SpeedlRPM SFPM travelling head) 6 10,185 16,000 7 8,730 16,000 8 7,640 1 6,000 work rotatina machine) 10 6,115 16,000 L~201Dry (semi-automatic) I20 x '/s x 1 (RES) 1 2050 12 5,095 16,000 -- 14 4,365 16,000 16 3,820 16,000 18 3.01 5 14,200 20 2,715 14,200 *Wheel Shape - Type 1 2 4 2,260 14,200 2 6 2,090 14,200 30 1.810 14.200 This document is for viewing while on this website only. Copying, printing, saving or otherwise duplicating this document is prohibited and violates the Terms Of Use agreement. PRODUCT APPLICATION & SELECTION CUTTING-OFF (REINFORCED) Beachmont-Tabor Co., Montrose, PA. Setco Industries, Inc. (formerly Standard Electrical Tool Co.), Cincinnati, OH. Spindle I 1 MachinelModel Wheel Size Shape SpeedlRPM I I Swina Frame Cut-Off I TYPe 1 Type 27A HS 2530 SFC, 30 x '/i x 1% TYpe 1 HS 2530 SFCP (3-% D.!? Type 27A holes on 6% " Stanley Electric Tools, Cincinnati, OH. 'Wheel Shape-Type 1 Spindle Emerson Electric Co. Special Products Div., St. Louis, MO. MachinelModel Wheel Size* SpeedlRPM Spindle W-6, W-60 1 6xX,x3/i I 3200 no load MachinelModel Wheel Size* SoeedlRPM W-7, W-8 1 7xX2x3/i 1 3700 no load Cut-Off Machine-Dry I~x(Y~,-~/~~)x~3100 W-9, CCS-9 1 9xX2x7h 1 3300 no load 10 x (X, - '/a) x '/a 4750 CCS-12 I 12xi/ax1 1 2100 no load 8 x (X,- '/a) x 5/a 4750 'Wheel Shape - Type 1 'Wheel Shape - Type 1 Everett Industries, Inc., Warren, OH. Stone Machinery Co., Manlius, N.Y. 1 Soindle I Spindle MachinelModel Wheel Size* ~~e'edl~~~MachinelModel Wheel Size* SpeedlRPM "Everett"-Drv-3OHP 126 x 7/,, x 1 1 '*TO suit a,<- 1 M-35 12 X 3/,, X 1 3200 14 x '/a X 1 'Wheel Shape - Type 1 **Not to exceed 14,200 SFPM (2090 RPM) M-75 16 x '/a x 1 2500 Fox Grinders, Inc., Pittsburgh, PA. M-750 16 x '/a x 1 2500 20 x '/a x 1 2150 1 Spindle 1 M-120 20 x '/a x 1 2150 1 MachinelModel Wheel Size Shape ~~eedl~~~1 M-160 20 x '/a x 1 2150 Swina Frame 1 I 1 I 1 24 x 3/,, x 1 1900 1 cut-dff-~ri 1 M-250 24 x 3/,, x 1 1900 10-C live shaft 16 x %. x 1 Tvoe 1 3807 ,-- ,, 1 10-CD live shaft 16~y~~xlME666063807 ~ 'Wheel Shape -Type 1 6-C live shaft 20 x 3/,, x 1 Type 1 2664 Syncro Machine Co., Perth Amboy, N.J. 6-CD live shaft 20 x X, x 1 MD81766 2664 4-C live shaft 24xX,x13/i Type1 24"-2258 Spindle 18% " - 2880 MachinelModel Wheel Size* SpeedlRPM Portable Power-Driven 18x '/a x 1% 2000 Cut-Off Machine ( 2-C live shaft 1 30xq/4 x 13/i1Type1 1 30"-1800 1 'Wheel Shape - Type 1 Cut-Off and Grinder 10-CC live shaft 16 x 5/,, x 1 Type 1 3492 6-CC live shaft 20 x Yl, x 1 Type 1 2556 4-CC live shaft 24 x X,, ." x 1% Tv~el,, 24" - 1944 1 19"- 2520 1 Table Mounted . 4-TMC live shaft 24 x 3/,, x 1 3/i Type 1 24" - 2258 or 27A 18%" - 2880 pppp 2-TMC live shaft 30 x '/i x 1% Type1 30" - 1800 This document is for viewing while on this website only. Copying, printing, saving or otherwise duplicating this document is prohibited and violates the Terms Of Use agreement. PRODUCT APPLICATION & SELECTION CUTTING-OFF (REIN FORCED) General information for Cut-Off Wheels Specific Bond Recommendations (cont'd) Bonds: B25N A versatile, freecutting, durable wheel constructed with Resinoid: For dry cutting on production applications. Rubber: For full diameter side reinforcing. (Availability range: 3/4"- wet cutting on production applications. 10" diameter, grit size 24 through 80, grades P, R, T, V, X, "D" sides; 12"-30" diameter, grit size 24 through 30, grades P, R, T, V, X, "R" sides. Drive pin holesavailable.) Specific Bond Recommendations B25B A versatile, free cutting, durable wheel constructed with full diameter central reinforcing. (Availability BN The BN type is identified by its black color and dis- range: 1"-12" diameter, grit size 24 through 80, grades tinctive knurled pattern on thesides of the wheel. The P, R, T, V, X, "DMsides; 14"-34" diameter, grit size 24 pattern enhancesthecutting action and reduces binding through 30, grades P, R, T, V, X"R" sides. Drive pin holes in the cut. These wheels are used principally by non- available.) ferrous foundries for cutting-off and notching gates B65N Norton Company's newest side reinforced, cold pressed and risers from castings, because wheel rigidity is of cut-off bond offers better performance than B25N on prime importance. (Availability range: Yz-24" diameter, exotic investment-cast alloysand stainless. (Availability grit sizes 24 through 80, grades 014, R14 and V10.) range: 10"-20" diameter, grit size 241, 244 and 304, grades P, T, V.) BNC Norton Company's newest reinforced, hot-pressed wheel designed to be used in heavy duty cut-off B65B Norton Company's newest, central reinforced, cold operations. Their very dense structure provides a stiff, pressed cut-off bond offers better performance than durable wheel. (Availability range: 16,20,24" diameter, B25B on exotic, investment-cast alloys and stainless. grit size241,244,304 in UA, U57A, NZ abrasives, P, T, X, (Availability range: 10"-20" diameters, grit sizes 241, Z grades.) (Formerly X346) 244 and 304, grades P, T, V.) BNA2 This wheel fulfills the need for a thinner wheel than R N RN designates rubber bonded reinforced products can be furnished with BN or BNA types.