For aluminum alloy tubing up to and including 12" outside diameter, tighten the nut from 1 to 1 16 turns. As it tightens, it pulls the collar, squeezing the flared tube onto the male cone of the fitting and forming a leakless seal. Bend the tubing carefully to avoid excessive flattening, kinking, or wrinkling. Final tightening depends upon the tubing (step 3). Too much pressure on the cutting wheel at one time could deform the tubing or cause excessive burring. The grip-die method of beading is confined to small tubing. It can be re-melted and reused as often as desired. [Figure 7]. Although identification markings for steel tubing differ, each usually includes the manufacturers name or trademark, the Society of Automotive Engineers (SAE) number, and the physical condition of the metal. Alaska - Wasilla, AK The sleeve pilot should contact the tube or have a maximum clearance of 0.005" for aluminum alloy tubing or 0.015" for steel tubing. The industry standard Rol-Air is the choice of professionals. A double flare is used on soft aluminum alloy tubing 38" outside diameter and under. What could be more fun? This folds the tubing on itself and forms an accurate double flare without cracking or splitting the tubing. Herber also provides a complete line of portable, semi-automatic, and fully automatic swage machines. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); This site uses Akismet to reduce spam. Place the tube in the cutting tool with the cutting wheel at the point where the cut is to be made. Supplier to most aircraft companies since 1965. Move the yoke down over the top of the die holder and twist it clockwise to lock it into position. LAS Aerospace Ltd is registered in England No 2041506. Typically, the tubing size is stamped in the bender. You will probably see some tiny stretch marks, but there should be no cracks or splits. Next, back off the cone just enough to remove the adapter. Advance the clamp screw against the end segment and tighten firmly. After sawing, file the end of the tube square and smooth, removing all burrs. A flared connection requires four pieces of hardware, at least three tools and several operations for fabrication and assembly. The cutter can be used with any soft metal tubing, such as copper, aluminum, or aluminum alloy. Slide the nut over the far end of the tube and engage the threads on the AN fitting. This is not a difficult operation, but it must be done in the correct order with the right tools. Slide the collar down the tube until it rests on the top of the flare. The information contained herein is founded on accumulated knowledge gained from long years of manufacturing experience and growth of The Parker Appliance Company in direct relationship with the aircraft industry. This procedure keeps sawing vibrations to a minimum and prevents damage to the tubing if it is accidentally hit with the hacksaw frame or file handle while cutting. Select the hole in the flaring bar that matches the tubing diameter and place the tubing with the end you have just prepared, extending above the top of the bar by a distance equal to the thickness of the shoulder of the adapter insert. After the bend is made, the alloy is again melted under hot water and removed from the tubing. [Figure 1]. Painted color codes used to identify aluminum alloy tubing, Figure 4. To ensure consistent tubing dimensions and characteristics, all material required for a tube bending job should be procured from one supplier and should preferably be from the same lot or heat number. In a modified version of the filler method, a fusible alloy is used instead of sand. Terms & Conditions, Copyright 2022 Tools for Bending. Figure 6 shows hand benders available for different sizes of tubing. Cut off the end of the tubing, if it appears damaged. With the right tools, some practice and a big stamp on your forehead reminding you not to forget the AN818 collar, flare fittings are easy. The operation gets much easier if you clamp the tool in a vise and bring the tubing to it. Slip the fitting nut and sleeve on the tube. Use a knife or the burring edge attached to the tube cutter. Address: Scratches, abrasions, or minor corrosion on the outside of fluid lines may be considered negligible and can be smoothed out with a burnishing tool or aluminum wool. For steel tubing and aluminum alloy tubing over 12" outside diameter, tighten from 1 16 to 1 12 turns. The two systems are not compatible, however, so be careful not to use automotive tools or fittings in your airplane.). To determine this point, slowly turn the tube back and forth while tightening the nut. Advance the clamp screw against the end segment and tighten firmly. Presetting flareless tube assembly, Figure 15. In addition, a small vise (tube holder) is furnished with the kit. Tighten the nut until the cutting edge of the sleeve grips the tube. Take a good look at the stretched aluminum around the circumference of the flare. For example, number 6 tubing is 616" (or 38") and number 8 tubing is 816" (or 12") and so forth. All our stock is available for next day delivery. You can edit the text in this area, and change where the contact form on the right submits to, by entering edit mode using the modes on the bottom right. (Somewhere, long ago, aircraft engineers concluded that 37 was the magic, non-leaking angle. Just as time is natures way of keeping everything from happening at once, the tube is natures way of getting gases and liquids from one place to another without a mess. Tubing made from 2024-T3, 5052-O, and 6061-T6 aluminum alloy materials is used in general purpose systems of low and medium pressures, such as hydraulic and pneumatic 1,000 to 1,500 psi systems, and fuel and oil lines. Flare fittings (often called AN fittings) are available in a wide variety of elbows, tees and union, each with its own designator number. Slip yoke over the flaring bars and center over adapter. The alloy-filled tubing is then removed from the water, allowed to cool, and bent slowly by hand around a forming block or with a tube bender. Copyright 2022Trader InteractiveAll Rights Reserved. Standard bend radii to which bending tools form the various sizes of tubes, Figure 8. To positively identify the material used in the original installation, compare code markings of the replacement tubing with the original markings on the tubing being replaced. Rotate the cutter around the tubing, applying light pressure to the cutting wheel by intermittently twisting the thumbscrew. The tube diameter is printed on all rigid tubing. Aircraft / Avionics Orders: 800.447.3408 Radio Control Orders: 877.219.4489, Keep an eye on your inbox for your The flare and tubing must be free from cracks, dents, nicks, scratches, or any other defects. Canada - Brantford, ON, FREE SHIPPING ON ORDERS OVER $350 (USA ONLY - SOME EXCLUSIONS APPLY) | 877-4-SPRUCE, Everything Explained For The Professional Pilot, Imperial 470-Fh Triple Head 1800 Tubing Bender, ATS Imperial Rol-Air Flaring Tool 37 Degree, Pipemaster The Welder's Tool For Contour Fits. A flare made too small produces a weak joint, which may leak or pull apart; if made too large, it interferes with the proper engagement of the screw thread on the fitting and causes leakage. The inside and outside of the tube is lubricated with light oil to reduce the friction between the rollers during beading. Connecting the tubing to the fitting requires slipping the nut and collar onto the tube, and then forming (flaring) the end of the aluminum tube to a female 37 cone. Aircraft tube bending can introduce added complications, using a wide range of tubing material, much of which has very poor elongation (12 to 18 percent). Although the use of flareless tube fittings eliminates all tube flaring, another operation, referred to as presetting, is necessary prior to installation of a new flareless tube assembly. This is necessary to prevent cutting off the flare and failure of the tube assembly under operating pressures. sales@lasaero.com And properly made, they can last the life of the airplane. If a freshly formed titanium surface is exposed in gaseous oxygen, spontaneous combustion could occur at low pressures. Copyright 2020 by Brown Aviation Tool Supply, 180 Degree Triple Head Tube Bender by Imperial, Heavy Duty 180 Degree Triple Head Tube Bender, Lever Type Triple Header Tube Benders - (for 1/4", 5/16" and 3/8" tubing), Lever Type Triple Header Tube Benders - (for 1/8", 3/16" and 1/4" tubing). +44 (0)1837 658080 When performing the deburring operation, use extreme care that the wall thickness of the end of the tubing is not reduced or fractured. Deburr the inside and outside of the tube. [Figure 7-7 (A and B)] Flares are frequently subjected to extremely high pressures; therefore, the flare on the tubing must be properly shaped or the connection will leak or fail. Use these tools only to flare soft copper, aluminum, and brass tubing. Insert pilot of correctly sized adapter into tubing. Rancho Santa Margarita, CA 92688 Customer Service: 800-861-3192 Designed for use in tight corners where other cutters will not fit. In fact, the aluminum will often refuse to stretch far enough and crack as the flare is formed. Measuring Tools- Calipers/Scales/Gages/Etc. This bells out the end of the tubing. Deburr both the inside and outside of the tubing to be flared. In addition we have distributorships for Aircraft Tool Supply, LP Aero Plastics, Falcon Gauge, Ceconite / Randolph and Shield Technology to name but a few! Other methods and types of beading tools and machines are available, but the hand beading tool is used most often. Store the fusible alloy filler where it is free from dust or dirt. If a flare is not made properly, flaws cannot be corrected by applying additional torque when tightening the fitting. East - Peachtree City, GA When using this method, cut the tube slightly longer than required. Northeast - Harrisburg, PA Figure 14 (steps 1, 2, and 3) illustrates the presetting operation, which is performed as follows: After presetting the sleeve, disconnect the tubing from the fitting and check the following points: The tube should extend 332" to 18" beyond the sleeve pilot; otherwise, blowoff may occur. Insert tubing between the segments of the die block that correspond to the size of the tubing to be flared. Getting a torque wrench onto fittings is usually difficult and often impossible, so an alternative method is to tighten the nut as tightly as possible by hand, and then use a wrench to tighten it once more flat. Both plugs must be tight so they are not forced out when the bend is made. In the case of attachment to a hose, it may be necessary to bead the rigid tube so that a clamp can be used to hold the hose onto the tube. The extra length is for inserting a plug (which may be wooden) in each end. +44 (0)1837 658081 Another important factor in aircraft tube bending is ensuring the finest quality material is used. Two kinds of flares are generally used in aircraft tubing: the single flare and the double flare. So the four necessary pieces are the fitting, the nut, the collar and the tube. The new Malco Ratchet Action tube cutter makes it easy to make clean cuts in tight spaces. What you get is the highest degree of fit and finish in the industry. Airplanes abound in tubes, hoses and pipes containing fuel, air and hydraulic fluid. The tool consists of a flaring block or grip die, a yoke, and a flaring pin. Did you forget to put the collar on first? (The tube must bottom firmly in the fitting.) Flares soft copper, aluminium and For making up to 90 and offset bends. In addition, with aircraft tubes, there is minimal permitted wall thinning (12 to 18 percent) and collapse (3 to 4 percent). These holes are countersunk on one end to form the outside support against which the flare is formed. tubing. North Road Ind Est, Okehampton, Devon, EX20 1BQ UK Slip yoke over the flaring bars and center over adapter. Not responsible for typographical or misprint errors. All rights reserved worldwide. Swaged or MS flareless fittings are used with corrosion-resistant tubing. The best tool for flaring the tube is the rotary flaring tool. Use these tools only to flare soft copper, aluminum, and brass tubing. Flaring tool. Do not use titanium tubing and fittings in any oxygen system assembly. This sounds simple, but holding the tool, moving the tubing and tightening the clamp requires three hands. Place the fitting in a vise (step 2), and hold the tubing firmly and squarely on the seat in the fitting. It must be square to the fitting. Cut the tube to the correct length, with the ends perfectly square. This is a textbook written for the use of the aircraft industry. If the code markings are hard or impossible to read, it may be necessary to test samples of the material for hardness by hardness testing. Under no circumstance is it permissible to use an automotive-type flaring tool which produces a flare of 45. The most common connection for fuel, vent and brake lines is a single-flare fitting. For that reason, most kit aircraft use light, cheap and easy-to-form 3003 semi-soft aluminum tubing where rigid lines make sense. In addition to other classifications or means of identification, tubing is manufactured in various wall thicknesses. Designing joints that allow tubes to connect to vibrating pieces of equipment, or one another, without leakingthats a lot harder. The production CNC tube bender is an example of this type of machine. Examples of correct and incorrect tubing bends are shown in Figure 8. In modern aircraft, aluminum alloy, corrosion-resistant steel, or titanium tubing have generally replaced copper tubing. On at least one end is a male cone, with an included angle of 37. For the best experience on our site, be sure to turn on Javascript in your browser. Valid on Orders Placed within 14 Days of Code Request, Some Exclusions Apply (GA Batteries/Plugs/Filters/Tires/Oil, Limitations on the amount of damage that can be repaired in this manner are discussed in this site under Rigid Tubing Inspection and Repair. If a fluid line assembly is to be replaced, the fittings can often be salvaged; then the repair involves only tube forming and replacement. Insert tubing between the segments of the die block that correspond to the size of the tubing to be flared. The tool consists of a flaring block or grip die, a yoke, and a flaring pin. Behind the cone are threads that will accept a nut (part number AN818 (n)(x), where n is the diameter tubing in sixteenths of an inch and x designates the material. 1 - Deland, FL 32724. Other problems could arise from ragged or crooked cuts on the end of the tubing or failing to clean the tube properly. The tools are self-gauging; the proper size flare is produced when tubing is clamped flush with the top of the die block. Toll Free: 877-477-7823 A little finger on the back of the dies serves as a stop. ABRASOTEX Deburrring and Polishing Wheels, Pneumatic Routers & Accessories (SIOUX & Taylor), Drill Blocks/ Bushing Holders/ Slip Bushings, Gage Bilt Powermax Install Kits for Cherry Max Riv, Straight Pulling Head for Single Action Blind Riv, "KHD" Series Spring Cleco- 1/2" Long Grip, "KEL" Series Spring Cleco-1/2"-3/4" Grip Range, Solid CARBIDE Threaded Drills for Composites, Reverse Counterbores / Countersinks / Pilots, 100 Degree Piloted Threaded Countersink Cutters, 82, 120, & 130 Degree Countersink Cutters, Countersinks for MS14218 / MS14219 Rivets, CARBIDE TIPPED Countersinks & Replaceable Pilots, Cutting Tools (Drill Bits, 6",12", Threaded, Etc. No movement of the sleeve pilot, except rotation, is permissible. Advance the cone downward until the shoulder of the adapter rests on the flaring bar. The tools are self-gauging; the proper size flare is produced when tubing is clamped flush with the top of the die block. If a flare is not made properly, flaws cannot be corrected by applying additional torque when tightening the fitting. Thus, it is important when installing tubing to know not only the material and outside diameter, but also the thickness of the wall. Double flare tool. Mate the flared end of the tube with the conical end of the fitting. Put a drop of light oil or a dab of Boelube on the cone of the flaring tool. Photos and other media may not display unless you activate javascript and refresh this page. Very slight damage of this type can lead to fractured flares or defective flares, which do not seal properly. (High pressure hydraulic lines require different materials and methods, but they dont appear on a lot of small homebuilt airplanes, so we wont deal with them here.) It is our sincere hope that this book serves the purpose for which it is publishedthat it will be of real value in our Nations war effort., Unit I Materials For Installation of Tubing (page 4 through 16), Unit II Flared Tube Fittings (page 20 through 37), Unit III Fabricating And Installing Tubing (page 41 through 88), Unit IV Miscellaneous Notes On Maintenance Of Tubing System (page 91 through 131). Homebuilt aptly describes where most project aircraft are assembled. Typically, aircraft tube bending is characterized by a number of factors. When the tube no longer turns, the nut is ready for tightening. Quick response for aircraft tooling delivery. Hours: In some cases, to resist vibration and allow relative movement, tubes take the form of flexible hoses. Use the "Filter By" button at the bottom of your screen to select only the makes or model /groups relevant to your search. Slip the fitting nut and sleeve on the tube. Midwest - West Chicago, IL The flare and tubing must be free from cracks, dents, nicks, scratches, or any other defects. To use the hand beading tool, cut with tube cutter (1), deburr (2), oil (3), and revolve tool around tube while tightening handle (4). Never heat this filler in any other way than the prescribed method, as the alloy will stick to the inside of the tubing, making them both unusable. Tubing may be cut with a tube cutter or a hacksaw. This hefty beast isnt cheap, but it has rotating dies that will fit all common tubing sizes, stops that ensure the tubing is in the right place for forming and clamps that will hold it there. Fax: 800-329-3020, West - Corona, CA Under no circumstance is it permissible to use an automotive-type flaring tool that produces a flare of 45. (adsbygoogle = window.adsbygoogle || []).push({}); Two kinds of flares are generally used in aircraft tubing: the single flare and the double flare. Loosen clamping screw used for locking the sliding segment in the die holder. Align the two zeros and align the mark on the tubing with the L on the form handle. This bells out the end of the tubing. Separate rollers are required for the inside of each tubing size, and care must be taken to use the correct parts when beading. The deburring operation can be accomplished by the use of a deburring tool. Makes smooth short radius bends up to 180. Tube bending machines for all types of tubing are generally used in repair stations and large maintenance shops. Benders for larger sizes are available, and the principle of their operation is similar to that of the hand tube bender. Cut the flared end off the tube and start over.). After plugging one end, fill and pack the tube with fine, dry sand and plug tightly. Central - Fort Worth, TX Select the hole in the flaring bar that matches the tubing diameter and place the tubing with the end you have just prepared, extending above the top of the bar by a distance equal to the thickness of the shoulder of the adapter insert. {getWidget} $results={5} $label={recent} $type={list1}, Figure 1. Slip the nut, then the sleeve, over the tube (step 1), lubricate the threads of the fitting and nut with hydraulic fluid. We noticed you're using an unsupported browser which may result in limited or no functionality for portions of our website. The use of a saw decreases the amount of work hardening of the tubing during the cutting operation. ), Fractional Cobalt Jobber Length Drill Bits, Letter A thru Z Cobalt Jobber Length Drill Bits, #1-#60 High Speed Steel Jobber Length Drill Bits, Fractional Letter High Spd Stl Jobber Lgth Drill B, Cobalt Aircraft Extension Drill Bits - 6" & 12", 6 Flute 100 Degree Chatterless Countersink, Single Cutting Edge Countersinks - 100 Degree, NEW! Tubing with flattened, wrinkled, or irregular bends should not be installed. It is also more resistant to the shearing effect of torque. Additional part listings were filtered out that may be similar, click here to view. Please check the boxes for the options that you would like to add. Too much torque will simply crush and split the aluminum flare. | In this book we have attempted to outline in logical sequence maintenance information indispensible to engineers, installers, repairmen and all others engaged in the installation and maintenance of aircraft tubing systems. 194 West Dakota Avenue | Denver, CO 80223, Copyright 2022 Tools for Bending. [Figure 3] This tool is capable of removing both the inside and outside burrs by just turning the tool end for end. [Figure 15] The bead is formed by using the beader frame with the proper rollers attached. Use the Side Filters to your left to select only the makes or model / groups relevant to your search. Its higher tensile strength permits the use of tubing with thinner walls; consequently, the final installation weight is not much greater than that of the thicker wall aluminum alloy tubing. The radius blocks are so constructed that the radius of bend varies with the tube diameter. Prices subject to change without notice. To prevent thinning out of the flare wall, do not overtighten. More Info. More Info, Herber Aircraft offers Rynglok hydraulic tube repair systems, which facilitate permanent repairs while tubing is still on the aircraft. [Figure 10A and B] Flares are frequently subjected to extremely high pressures; therefore, the flare on the tubing must be properly shaped or the connection leaks or fails. This indicates an accurate flare has been completed. Our quality assurance is certified by the largest manufacturer of commercial aircraft. Anneal brass, copper, and aluminum by heating to a dull red and cool rapidly in cold water. Before making repairs to any aircraft tubing, it is important to make accurate identification of tubing materials. Therefore, if the tube bending is not handled properly, this will add time to the production process and challenge efficiency. First, this particular type of tube bending often consists of tight radius bends some of these less than 1 x D. Also, the tube bending can include high wall factors of 200 plus, and oftentimes little or no straight between bends. It will last for generations. It works well enough on larger sizes, but at sizes of less than about inch its usually best to use a deburring bit. Titanium and titanium alloys are oxygen reactive. Cut the tube squarely and remove all burrs. Most aluminum tube in small airplanes will be either inch (brake lines, fuel vent lines, and perhaps fuel lines for small engines) and inch (usually for fuel lines for engines of 100 horsepower or more). On large aluminum alloy tubing, the alloy designation is stamped on the surface. The flaring tool used for aircraft tubing has male and female dies ground to produce a flare of 35 to 37. Two types of flaring tools are used to make flares on tubing: the impact type and the rolling type. If a tube cutter is not available, or if tubing of hard material is to be cut, use a fine-tooth hacksaw, preferably one having 32 teeth per inch. The flaring tool used for aircraft tubing has male and female dies ground to produce a flare of 35 to 37. Most flaring tools have a triangular, foldable blade. (Oops! Open the flaring tool by unscrewing both clamping screws. $25 off code. For thin wall tight radius tube bending, which occurs frequently in aircraft tubes, there are special considerations regarding the material to be bent. Any slight angle will make if difficult to start the nut, and if you do get it started, you run the risk of splitting the aluminum flare. Anneal brass, copper, and aluminum by heating to a dull red and cool rapidly in cold water. Learn how your comment data is processed. You have entered an incorrect email address! If the measured end is on the right side, then align the mark on the tubing with the R on the form handle. The typical mistake is to push too much tubing into the flaring tool (bypassing the little finger). Once the dies (top and bottom) are rotated to the proper size, the nut and collar are slipped over the tube, and the end of the tube is inserted into the dies. All reproduction in part or in whole prohibited. Excessive flattening causes fatigue failure of the tube. This is used for cleaning the burr left by the cutter on the inside of the tubing. Tighten clamping screws to hold tubing securely. When hand or production tube benders are not available or are not suitable for a particular bending operation, a filler of metallic composition or of dry sand may be used to facilitate bending. A crooked flare is the result of the tubing not being cut squarely. Rigid tubing may be joined to either an end item (such as a brake cylinder), another section of either rigid tubing, or to a flexible hose (such as a drain line). After removing the adapter, advance the cone directly into the belled end of the tubing. However, it is difficult to determine whether a material is carbon steel or stainless steel, or whether it is 1100, 3003, 5052-O, 6061-T6, or 2024-T3 aluminum alloy. The radius of bend is usually stamped on the block. All Rights Reserved Cut off the end of the tubing if it appears damaged. On small aluminum tubing, the designation may be stamped on the surface; but more often it is shown by a color code, not more than 4" in width, painted at the two ends and approximately midway between the ends of some tubing. The hand beading tool is used with tubing having 14" to 1" outside diameter. The hand beading tool works somewhat like the tube cutter in that the roller is screwed down intermittently while rotating the beading tool around the tubing. With a steady motion, pull the form handle until the zero mark on the form handle lines up with the desired angle of bend, as indicated on the radius block. Ste. Do not use with corrosion-resistant steel or titanium. Do not use with corrosion resistant steel or titanium. To prevent thinning out of the flare wall, do not overtighten. The wall thickness is printed on the tubing in thousandths of an inch. Stock and pricing of all parts listed on this site is live, all prices exclude VAT and shipping. The solution is to install fittings that will allow fluids to pass, run the tubing between them and fasten the tube to the fitting with a threaded fastener.