Series 530 Still The Best! - Guhring
The Tool CompanyGT parabolic drillsSeries 530Still the Best!Series 549Series 668The industry’s largest offering of parabolic drillsfrom the industry’s leader in drilling innovations Reduce -- and even eliminate -- the need for chip clearing peck cyclesIncreased feed rates over standard high speed steel drill flute designsChip evacuation is improved for better finished hole and part qualityReduce cycle times and improve manufacturing efficiencyHundreds of stocked standard sizes in inventory
Parabolic drillsRethinking HSS and HSCO drilling applicationsLandProgressive manufacturers are continually looking for ways toreduce production costs but they may be overlooking one of themost common applications: high speed steel drilling. Althougha high speed steel drill is an inexpensive tool, it can actually increase the cost of manufacturing through marginal performance.Fortunately, there is an alternative. A general purpose highspeed steel (HSS) or cobalt (HSCO) drill with a standard flutedesign can be replaced with a Guhring GT (parabolic flute) drill,and production rates and part quality can both be significantlyimproved.The parabolicflute designRolled HeelParabolic Flutewas originallyWeb 25% - 50%developed fordeep hole drilling applicationswhere chippacking limits theeffectivenessof generalConventional Flutepurpose fluteWeb 12% - 25%designs. Extrafigure 1length drills weremanufacturedwith a parabolic flute to increase the flute spacing by 50% andallow for maximized chip control characteristics with better coolant flow (figure 1).Not all parabolic drills are the sameSome drill manufacturers only offer one style of parabolic flutedrills with thin lands and reduced web thickness. These drills aredesigned for non ferrous materials such as aluminum, copper andmild carbon steels. Parabolic drills with thin lands are designedspecifically for drilling depths up to 15 times diameter withoutpecking in materials no harder than 25 HRC. The Guhring GT50design is an example of the style of parabolic drill.Guhring offers another style of parabolic drill that has a widerland design and a stronger core web thickness called the GT100.Unlike the GT50 design, the GT100 parabolic drill can operateeffectively in a wide range of materials because of this heavierconstruction, and the machinist can choose the material substrateand protective coating to suit the application. High Speed Steel(HSS) drills are excellent for applications under 25 HRC, whilecobalt (HSCO) drills provide a higher red hardness and are moreresistant to abrasion.RISK FREE test and trial drill policy:Purchase any GT drill to test, and if it fails to improveyour productivity it can be returned for a full refund.Guhring also offers a carbide version of the GT100 drill, in brightfinish and TiN coated, for extremely abrasive applications in castiron and high silicon content aluminum alloys. An even morerobust version of the GT100 is the GT500, which Guhringoffers in two powdered metal cobalt series, TiN coated orFIREX coated.Increased feed ratesThe unique flute form of theparabolic drill contributesto increased chip flowwhich improvesheat dissipationwithin thecut. Because ofthe improved chip flowwithin the open flute design of the parabolic drill,there is no need to reducethe feed rate (inches per revolution).Infact, it is important to maintain a constantheavyfeed rate regardless of the depth of the hole.Conventional, non-parabolic, flute designs require a reduction infeed rate as the depth of the cut increases. The deeper the hole,the greater the tendency will be for chips to pack and clog theflutes and therefore the feed rate must be reduced. With a parabolic drill, feed rates can remain high and the drill speed may bereduced per the chart below.Hole depth-todiameter ratioSpeed reductionFeed reduction300400(times drill diameter)55%06 to 810%08 to 1120%011 to 1430%014 to 1740%017 to 2050%0Speed reduction - parabolic drills (based upon hole depth)See the 2010 Full Line Drill Catalog forcomplete information on our drill offering,or log onto www.guhring.com
The Tool CompanyA general purpose (Type N) flute profile incorporates an increasing web design that is tapered front to rear, which progressivelyreduces the flute spacing the farther the drill penetrates. Theparabolic flute form has a constant web design from the front tothe back of the flute (figure 2). This constant web design meansthat the chip space within the flute remains the same no matterhow deep the drill goes. The extra flute space and constantweb design reduce the need for drill retractions to clear chippacking -- known as pecking -- and allows the user to increasefeed rates (figureFlute3). ManufacturingRun-outcycle times are decreased along withCoreproduction costs.Increasing web designWebFluteRun-outCoreWebfigure 2Constant or parallel webGuhring employsthe parabolic flutestyle not only onextra length drills,but taper length,jobber length andeven stub lengthtools.Type NType GTWhile other manufacturers use parabolic drills for softer, nonferrous materials, Guhring has developed a variety of designsthat improve production in not only aluminum and copper, butalso cast iron, alloyedDsteels, unalloyed steelsand stainless steels. Themaximized chip evacuation5xDand coolant delivery to the10 x Dcutting zone equates to1.5 x Dhigher production rates andlonger tool life at any hole1.5 x Ddepth.1.5 x D1xD1xD1xD1xD0.5 x D3xD1xDfigure 3Type NCase history:Guhring GT 500 DZ drill takes on 4130 high alloy steelA manufacturer of aircraft components in the Northeast needed to improve their cycle time in a drilling application in 4130 high alloy steel.The 0.1248” diameter jobber drill they had been using required oneminute and ten seconds to produce a 1 1/8” deep hole, and was notachieving great tool life.Even in this hard material, a Guhring parabolic drill can dramatically outperform a standard flute profile. In this vertical CNC application, a Series530 GT 500 DZ drill was tested against the competitor’s HSS drill. Thefeed rate was boosted from 0.0002 to 0.002 inches per revolution (IPR),which reduced the cut time from 55 seconds to 9 seconds. With the parabolic drill, no withdrawal cycles or “pecks” were required, and the cycletime was reduced from one minute and ten seconds to just 24 seconds.Tool life was also greatly improved with the Guhring drill. The superior chip flow of the GT 500 DZ parabolic flute form contributes to thelongevity of the drill, as does the PM cobalt substrate and stronger coreweb thickness. Series 530 is a FIREX coated drill, thus it benefits fromadditional tool life from this high heat- and wear-resistant PVD coating.The Guhring drill produced 48 holes in the high alloy steel before needingregrinding, whereas the competitor’s tool only achieved 2 holes.Cycle time: Competitor vs. Guhring“I have never in my life seen a drill bit perform like this.”- Quote from blogger on Practical Machinist.com,describing a 1/4” Guhring parabolic drill he wasrunning in W-1 die steel on a lathe.“I’ve used Guhring drills in the past and I’ve never beenlet down by them, you get what you pay for.”- One reply to the above blogger’s post.7060Competitor:70 seconds50403020100GT500DZGuhring:24 secondsOverall, the end-user saw more than 64%savings in this application by switchingto the GT 500 DZ parabolic drill, despitethe fact that the initial purchase price wasconsiderably higher than the drill they hadbeen using. With the Guhring drill, theysaved 1.14 per hole drilled - needless tosay, they have now replaced multiple HSSdrills with Guhring parabolic drills.
533296595521515549550GT100(LH)StyleGT80GT80 (LH)GV120GV120GT500DZGT500DZGT100Point Angle130 130 130 130 130 130 130 130 eHSSHSSCobaltCobaltPM-CobaltPM-CobaltHSSHSS0.400 - 48.0000.500 - 15.5001.000 - 14.0001.000 - 14.0000.600 - 16.0001.000 - 16.0000.0157 - 1.88980.0197 - 0.61020.0394 - 0.55120.0394 - 0.55120.0236 - 0.62990.0394 - 0.6299Surface FinishStd. Dia. Range1.000 - 20.000 1.000 - 20.000mmStd. Dia. Range0.0394 - 0.7874 0.0394 - 0.7874In.WorkpieceMaterialsFor detailed size information, refer to the 2010 Full Line Drill catalog, or go towww.guhring.com, and click on the Products & Services tab.ExtraLengthDrillsCoolant 8336502524StyleGT 100GT 100GT50GT100GT100GT100GT100GT100GT50Point Angle130 130 130 130 130 130 130 130 130 Length8xD8xDTaperTaperTaperTaperTaperXL #1XL .000 - 14.0003.000 - 13.0001.000 - 14.0001.000 - 14.0001.000 - 16.0001.950 - 13.000 2.000 - 12.7000.0394 0.55120.1181 - 0.51180.0394 - 0.5512 0.0394 - 0.5512 0.0394 - 0.62990.0768 - 0.5118 0.0787 - 0.500Surface FinishStd. Dia. Range3.17- 12.703.17- 12.70mmStd. Dia. Range0.1248- 0.5000 0.1248- 0.5000In.WorkpieceMaterialsbrightsteam oxidenitrided landsnitrided
The Tool CompanytSelecColorCodeWorkpiece MaterialGeneral Steels, 0GT100GT100GT500DZGT500DZ130 130 130 130 130 130 130 tCobaltCobaltCobaltPM-CobaltPM-Cobalt1.000 - 16.0001.000 - 16.0001.000 - 16.0003.000 - 12.0003.000 - 12.0001.000 - 14.0001.000 - 14.0000.0394 - 0.62990.0394 - 0.62990.0394 - 0.62990.1181 - 0.47240.1181 - 0.47240.0394 - 0.55120.0394 - 0.5512Alloyed, Nitrided orCase Hardened SteelsStainless and AcidResistant SteelsTool Steels, High-Tensile or Hardened SteelsAluminum andAluminum AlloysCast IronTitanium and Ti-Alloys,Aerospace Materials,Nickel-Based GT100Style130 130 130 130 130 130 Point Angle130 130 130 XL #1XL #1XL #2XL #2XL #2XL #3LengthBushingXL #1XL #2HSSCobaltHSSHSSCobaltHSSSubstrateHSSHSSHSS8.000 - 31.0008.000 - 30.0000.315 - 1.22050.315 - 1.1811Surface Finish1.980 - 12.700 2.700 - 10.0002.000 - 13.0002.700 - 8.5003.000 - 10.0002.500 - 13.0000.078 - 0.500 0.1063 - 0.39370.0787 - 0.5118 0.1063 - 0.3347 0.1181 - 0.39370.0984 - 0.5118Std. Dia. Range5.500 - 32.000mmStd. Dia. Range0.2165 - 1.2598In.WorkpieceMaterialsTiNTiCNTiAlNFIREX
PVD coatings and surface finishesPVD Hard CoatingsMonolayer CoatingTool SubstrateTiN (Titanium nitride)Physical appearance: golden colorTiN (titanium nitride) significantly improves wear life and hole finish, which frequently enables higher drilling speeds, especially inferrous materials.TiCN (Titanium carbon nitride)Physical appearance: grey-violet colorTiN mono-layer coatingCoatings can improve many tool and part characteristics whenproperly applied. They increase surface hardness, lower thefriction coefficient and thermal conductivity, and provide achemically inert surface.As a cutting tool manufacturer, Guhring offers a level of coatingexpertise without equal in the industry. Guhring was the first tointroduce TiN coating (Titanium Nitride) to cutting tools in 1980,and has remained a global leader in developing and applyingnew coating technology to improve both cutting tool and wearpart performance. Today, Guhring offers a full range of highperformance PVD (Physical Vapor Deposition) coatings to meetcustomers’ diverse needs.Surface refining processesTiCN is harder and more shock resistant than TiN coating undermoderate cutting temperatures. The most common application forTiCN coated drills would be in steel applications and are not recommended for nonferrous materials.TiAlN (Titanium aluminium nitride)Physical appearance: black-violet colorA special coat for machining abrasive materials and/or for workingat high temperatures, TiAlN is more heat and wear resistant thatTiN or TiCN but at elevated operating temperatures. This monolayer coating is best suited for applications over 25HRC but cautionshould be taken when drilling at temperatures below 1380 F.Multilayer Coatingsteam nitridedTool Substratenitrided landsNitriding is a further means of increasing the durability of tools.This finish is recommended for the machining of grey cast iron,aluminium with a high silicon content, plastics, steels with a highperlite content etc.steam oxideSteam oxide tools also offer a reduction in sliding resistance. Thuscold welding which occurs for example during the machining ofsteels that have a low carbon content, can be avoided most economically. Steam oxide tools are only suitable for ferrous materials.FIREX multilayer coatingFIREX (multilayer TiAlN & TiN)Physical appearance: black-violet colorFIREX provides the universal applicability of TiN with the heatand wear resistance of TiAlN. FIREX coated drills are recommended for ferrous materials and applications where heat buildup is an issue. One of the key benefits of FIREX is that the coating will operate effectively in both high heat and low heat applications because of the multi-coating combination.GT Parabolic drills from Guhring: Replaces standard general purpose high speed steel and cobalt drills Drill stainless steel, alloyed steels, cast iron, unalloyed steels and more Unique point geometry with a Type A or GN-B web thinning Guhring’s own HSS substrate, longer lasting premium powdered metalcobalt substrate, or sub-micro grain carbide substrate for extended tool life High-performance PVD coatings provide heat and wear resistanceunder higher operating temperatures
Special Tools Made in the USAThe Tool CompanyFor high production jobs, special design parabolic drills are often the best solution. Whetheryou need an odd size diameter, a non-standard length, a coolant fed version or a multiplediameter step tool, having a tool made specifically for your operation can save hundredsof dollars in manufacturing costs.Guhring has two manufacturing plants in the United States (Brookfield, Wisconsin& New Hudson, Michigan) which produce a wide range of blueprint special tooling inall cutting tool substrates. Our fully computerized quotation system enables us to turnaround special tooling quotations quickly and accurately. Guhring’s skilled design engineers tap into our global database to produce custom tooling designs from provengeometries and substrates.Guhring produces high speed steel, cobalt and carbide tooling tothe most exacting specifications, utilizing the same manufacturingequipment and techniques as the production plants in Germany.Contact Guhring at (800) 776-6170 or arrange to have one of ourfield service engineers visit your facility to obtain a quotation on yourspecial drill needs.Price Versus CostYou may pay more for qualitytools, but you are actually savingmoney. The cost of a cutting toollike a high speed drill or carbideend mill typically accounts forless than 4% of the total cost ofmanufacturing a part, but that cutting tool’s performance can havea huge effect on the other 96% ofthe manufacturing costs.80% Machining Costs16% CoolantCosts4% Tool CostsInferior cutting tools can lead to breakage and scrap parts, theycan reduce cycle time and drive up production costs, and theycan also affect part quality -- leading to rejections and part failures. The price of inferior cutting tools is not worth the ultimatecost.When you think about it, the cost of a quality high speed drill isonly on average 10 to 50 dollars but it can sap hundreds ofdollars worth of production costs. Spend more for the right quality tooling and make more money.Free toolfinder softwareFind the best-suited Guhring cutting toolsfor your application quickly and easilywith Guhring Navigator. Go to www.guhring.comand click on the icon to test drive this software.
STANDARD & SPECIAL PRODUCT RANGE Carbide Standards GU 500 DZ Universal DrillsRT 100 U/ F High Penetration DrillsGT 500 DZ High Performance DrillsHigh Performance PM HSS-E TapsRT 100 X High Penetration DrillsRT 100 R High Penetration DrillsRT 100 T Deep Hole DrillsCoolant-Through RT 100 U/ F/CHigh Penetration DrillsCoolant-Through RT 150 GGStraight-Flute High Penetration DrillsCoolant-Through HT/ RT 800 WPInterchangeable Insert DrillsGS 200 U/G Three-FluteHigh Precision DrillsGT 100 Parabolic Flute Deep Hole DrillsExclusive Line Small-Diameter DrillsEB 100 Small-Diameter Single-FluteGun DrillsGeneral Purpose DrillsNC Spot DrillsPRO-Line Universal End MillsTECH-Line High Performance End Mills HSS & HSCO Specials Carbide Specials GT 100 Parabolic Flute Deep Hole DrillsCoolant-Through GT 100 IC Parabolic FluteDeep Hole DrillsGT 80 Parabolic Flute Deep Hole DrillsCoolant-Through GT 80 IC Parabolic FluteDeep Hole DrillsGT 50 Parabolic Flute Deep Hole DrillsGeneral Purpose DrillsHeavy Duty DrillsHeavy Duty Split Point DrillsLow Helix DrillsHigh Helix DrillsMicro-Precision DrillsNC Spot DrillsDrill-CountersinksHigh Performance HSS-E TapsDrillsStep DrillsStep Drill ReamersStep Core DrillsStep Core Drill ReamersReamersStep ReamersSubland DrillsSubland Drill ReamersSubland Core DrillsTapsDrillsRT High Performance DrillsG DrillsGun DrillsThree- & Four-Flute DrillsStep DrillsStep Drill ReamersStep Core DrillsStep Core Drill ReamersReamersStep ReamersSubland DrillsSubland Drill ReamersSubland Core DrillsTapsEnd Mills PCD Specials Coating Services Titanium Nitride (TiN)Titanium Carbonitride (TiCN)Titanium Aluminum Nitride (TiAlN)FIREX Special Multilayer Hard CoatingSuper A (AlTiN)MolyGlide Lubricating Soft CoatingNitride / Steam Oxidenano-ATM micro thin AlTiNnano-FIREX micro thin film gradientstructure Reconditioning Service GM 300 Modular HSK Toolholding SystemHydraulic / Shrink / Collet ChucksAdaptersCollets GE 100 Modular Tooling SystemDISTRIBUTED BY:www.guhring.comForm #001-048 HSS, HSCO & PM Standards Guhring, Inc.P.O. Box 643, Brookfield, WI 53008-0643West Coast Distribution Center17902 Georgetown LaneHuntington Beach, CA 92647Shipping Address1445 Commerce AvenueBrookfield, WI 53045Tel (262) 784-6730 (800) 776-6170Fax (262) 784-9096Guhring Corporation20 Steckle Place, Unit #14Kitchener, ON N2E 2C3Tel (519) 748-9664 (800) 463-5555Fax (519) 748-2954
General Steels, Brass, Copper Alloyed, Nitrided or Case Hardened Steels Stainless and Acid-Resistant Steels Tool Steels, High-Ten-sile or Hardened Steels Aluminum and Aluminum Alloys Cast Iron Titanium and Ti-Alloys, Aerospace M
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The Invisible Man The Very Big Potato Two Feet Up, Two Feet Down Up, Up, and Away: The Story of Amelia Earhart . The Spider and the Beehive Weird Science: How Freaky Animals Got That Way . 530 530 530 530 530 530 530 540 540 540 540 540 540 540 550 550 550 550 550 550 550 550 550 550 55
