Fabrication Machinery Solutions

Flexible financing and leasing options, to get the equipment into the hands of our valued customers. Contact Us Today for Great Values on the Right Choice for Your Business Solution! LEASING & FINANCING Carell & Eagle Bending Machines understand that good business is much more than just manufacturing the best equipment…it’s also about offering the best, most flexible financing and leasing options, to get the equipment into the hands of our valued customers. Contact Us Today for Great Values on the Right Choice for Your Business Solution Take Advantage of our Lease & Finance Options TODAY! or Call (251)937-0947

The MIGNON Series Initial Pinch Roll Benders are designed for small profiles and tubes. Both units are bench mount types and are available in electric drive and manual crank drives. Mignon machines are single initial pinch types with 3 DRIVEN ROLLS for optimal traction. MIGNON SERIES CARELL In-Stock Specials Request-A-Quote The MIGNON Series Initial Pinch Roll Benders are designed for small profiles and tubes. Both units are bench mount types and are available in electric drive and manual crank drives. Mignon machines are single initial pinch types with 3 DRIVEN ROLLS for optimal traction when rolling tight diameters. Frames are steel alloy with bolted construction. High strength shafts are hardened and ground. Bending roll shaft adjustment is manual. Version 025 includes an mechanical counter to monitor bending roll shaft position. Units are furnished without rollers as most uses are for dedicated production. Carell will make these optional roll sets per your bending needs. Units furnished with an instruction manual and service guide as well as service and adjustment tools. MIGNON Series Features P ortable, Single Pinch Small Profile Bench Mountable Units Rugged, Steel Alloy Bolted Construction Frames Available in Electric Powered or Manual Rotation 3 Driven Rolls for optimal traction Hardened High Strength Shafts Optional Coil Calibration and Support Base Stand Options Rolls for tubes pipes, and special profiles Tooling for production of half tubes Overhead Supports for coil production Compression and Tension tooling for C, & I hard way NC and CNC Controls with various automation levels for repetitive jobs and production of variable radius bends and parts with multiple bends LED digital displays for movements on lateral material guides Mignon 025

Fabrication Nation Radio and Podcast covering the latest in the fabrication industry and playing a Gumbo of The World's Finest Rock to help you get thru your work day! Welcome to Fabrication Nation Playing a Gumbo of The World's Finest Rock We’ve got the music to keep your crew fired up and powering through the day. This is the soundtrack that fuels your grind and shapes America. From timeless classics to rowdy country rock and everything else that gets you moving. Whether you’re on the job or just need a boost, we’ve got something to keep everyone pumped and pushing through the workday! This is your Station! Our gift to you, The American Worker. The backbone of our great country. Fabrication Nation Radio—turn it up and let’s crush the day! Live 8:00am - 5:00pm Monday - Friday Request Line: 251-459-1038 Fabrication Nation - Interviews Fabricaton Nation, where American ingenuity takes center stage! This isn’t just another radio station; it’s your backstage pass to the heart and soul of the fabrication and manufacturing industries. Join us as we sit down with the visionaries and hard-hat heroes who are not only driving innovation but are also championing the spirit of American craftsmanship. From the blue-collar backbone of our great nation to the cutting-edge technologies shaping our future, we'll dive into what makes these industry leaders tick, why they’re passionate about their work, and their bold predictions for where we're headed next. It’s a celebration of the American Dream, the unsung heroes who keep our factories humming, and the promise of a future built on the principles of "Made in America." So grab your steel-toed boots and a cup of coffee, and let’s make America’s manufacturing great again, one episode at a time! Tell Us Your Story! First name* Last name Phone Email* Write a message Submit

Making the leap into exponential growth in fabrication production, knowing how to apply & select the right automation production systems is key. We manufacture and stock tools for plate roll bending, angle rolls, tube & pipe benders, custom & special tooling, section benders and more. We also carry the following brand names - Acrotech, Air Liquid, Cansa Makina, BPR Curvatrici, CBC, Comac, Hyllus, Icaro, Isitan, Lucas, Macri, Memoli, Ofmer, OMCCA, Omera, Parmigiani, Pedrick, Sahinler, and Simasv. We manufacture and stock tools for plate roll bending, angle rolls, tube & pipe benders, custom & special tooling, section benders and more. We also carry the following brand names - Acrotech, Air Liquid, Cansa Makina, BPR Curvatrici, CBC, Comac, Hyllus, Icaro, Isitan, Lucas, Macri, Memoli, Ofmer, OMCCA, Omera, Parmigiani, Pedrick, Sahinler, and Simasv. Automation Production Systems Evolving Into Automation Production Systems For small businesses making the manufacturing leap into exponential growth in fabrication production, understanding how to apply and select the right automation production systems is key. Capital investment is one of the biggest investment decisions a small business can make for large-step growth, so it’s essential to choose right the first time. The wrong equipment can seriously impact profit margins as well as limit the scale of service a fabricator can offer its clientele. Carell Corporation provides a large portfolio of automation production systems for growing companies, handling equipment needs for manufacturing for everyone from startups and small business to medium and large-size plant companies. With a high-performance selection available in multiple fabrication categories, Carell insures its customers are guided to the right equipment and tooling systems they need at every stage of their growth track. And, the automation system series that are available provide for all types of situations, including small footprint needs as well. Getting into the Accuracy of CNC Controls When it’s time to start moving in high accuracy fabrication, particularly of metal end product goods, CNC controls are essential. They can be guided manually or with automation programs (more popular), coupling with high production fabrication runs and demands. And because the accuracy potential is so high on the production side, companies can open up their possibilities for additional markets and sales as a result, especially into niche markets where specs are down to the millimeters or smaller for order fulfillment. The high quality CNC system Carell Corporation can make available also come with extensive guidance, training and capital equipment support through Carell for long investment life and profit margin turnaround in maintained production levels. With all these wins, its surprising more fabricators haven’t instituted CNC controls as fast as possible, especially with Carell Corporation’s available support.

The CARELL 308HV is a 3 driven rolls, double initial pinch universal bending machine with independent hydraulic adjustment of both lateral bending rolls and powered rotation of all three bending rolls. 308HV DOUBLE PINCH ANGLE ROLL Precision Engineered for Dependability Backed by the Best Guarantee in the Industry! CARELL In-Stock Specials Request-A-Quote Series PDF Brochure 308HV Specification Chart Capacities* Flats Hard: 5-1/2 x 3/4 Ø60 Flats Easy: 8" x 2" Ø42 Pipe Schedule 40: 5" Ø470 Angle Leg-In: 4" x 1/2" Ø48 *with standard equipment Angle 4 -1/2 " • Pipe 5" • Flats 8" CARELL's 308HV double initial pinch universal roll bending machines are available with 6 way m ulti-axis adjustable lateral guides, variable speed powered rotation of all three bending rolls and i ndependent hydraulic adjustment of the lower rolls for double pre-bending. This versatile unit is ideal for rolling standard/special sections plus tube & pipe in a variety of material types. The 308HV Series Universal Roll Set is designed for bending standard profiles , flat bar (on flat and on edge), square bar, tees, channel as well as round bar, square & rectangular tube sections, angles leg-in, leg-out and can be setup to operate in horizontal or vertical position adding further value to your production. Standard Features Dual LED Digital Displays monitor bending roll positions. Rigid, one piece solid steel weldment frame , normalized and precision machined, ample sized access panels and ventilation for internal hydraulic unit. 3 Shafts Driven w/ 3 Direct Coupled Hydraulic Motors and Planetary Speed Reducers for 100% efficient torque delivery. Larger, high strength steel shafts , heat treated and ground, journaled in dual self aligning spherical roller bearings for optimum performance. Hydraulic power unit integral to the machine frame. Multi axis, 6 way, fully adjustable lateral guides. Variable Speed rotation via electronic proportional valves. Universal bending rolls with modular components, hardened and wear resistant. Operates in both h orizontal & vertical orientations. Options Rolls for tubes pipes, and special profiles Tooling for production of half tubes Overhead Supports for coil production Compression and Tension tooling for C, & I hard way NC and CNC Controls with various automation levels for repetitive jobs and production of variable radius bends and parts with multiple bends LED digital displays for movements on lateral material guides

Carell Corporation makes it easy for clients and fabricators to secure the right horizontal presses for the jobs that need to be met. We manufacture and stock tools for plate roll bending, angle rolls, tube & pipe benders, custom & special tooling, section benders and more. We also carry the following brand names - Acrotech, Air Liquid, Cansa Makina, BPR Curvatrici, CBC, Comac, Hyllus, Icaro, Isitan, Lucas, Macri, Memoli, Ofmer, OMCCA, Omera, Parmigiani, Pedrick, Sahinler, and Simasv. Horizontal Presses A Wide Selection of Horizontal Presses Carell Corporation makes it easy for clients and fabricators to secure the right horizontal presses for the jobs that need to be met. With a selection of presses that range from small footprint to extra wide capabilities, the Carell T-series horizontal presses make it easy for fabricators to handle custom jobs without difficulty. All of the T-series presses incorporated forced lubrication with multiple tooling choices as well as accessories for added functionality. Straightening, bending, curling, rotary pipe modification, die cutting, shearing, twisting and form pressing are all doable. With all these added tooling options, a fabricator can easily create a wide range of metal hardware products with very little effort and cost aside from materials and system press maintenance. In fact, one could argue that Carell’s horizontal press equipment may almost be only limited by an owner’s imagination of what can be manufactured. We manufacture and stock tools for plate roll bending, angle rolls, tube & pipe benders, custom & special tooling, section benders and more. We also carry the following brand names - Acrotech, Air Liquid, Cansa Makina, BPR Curvatrici, CBC, Comac, Hyllus, Icaro, Isitan, Lucas, Macri, Memoli, Ofmer, OMCCA, Omera, Parmigiani, Pedrick, Sahinler, and Simasv.

The CARELL 304HV is a 3 driven rolls, double initial pinch universal bending machine with independent hydraulic adjustment of both lateral bending rolls and powered rotation of all three bending rolls. CARELL In-Stock Specials Request-A-Quote Series PDF Brochure 304HV Specification Chart 304HV DOUBLE PINCH ANGLE ROLL Precision Engineered for Dependability Backed by the Best Guarantee in the Industry! Angle 2-1/2" • Pipe 2" • Flats 4" Capacities* Flats Hard: 2-3/4 x 1/2" Ø28 Flats Easy: 4" x 1" Ø26 Pipe Schedule 40: 2" Ø24 Angle Leg-In: 2" x 5/16" Ø30 *with standard equipment CARELL's 304HV double initial pinch universal bending machines are available with independent hydraulic adjustment of both lateral bending rolls and powered rotation of all three bending rolls. This versatile unit is ideal for rolling standard/special sections as well as tube and pipe in mild-structural-stainless steels, aluminum, brass, copper and other materials. Machines are furnished with a set of standard universal rolls. Standard Features Dual L ED Digital Displays monitor bending roll positions Double Pinch G eometry permits pre-bending of leading & trailing ends of the profile without removal from the machine Telescoping modular multi-component roll set specifically designed to bend standard sections including angle leg-in/out and square/rectangular tube, as well as other shapes in a variety of material types Tri-Directional Lateral Guides with cam rollers for correcting inherent twist when rolling angle leg-in Operates in both horizontal and vertical orientations Options Rolls for tubes pipes, and special profiles Tooling for production of half tubes Overhead Supports for coil production Compression and Tension tooling for C, & I hard way NC and CNC Controls with various automation levels for repetitive jobs and production of variable radius bends and parts with multiple bends Powered Movements on lateral material guides on models 302HV through 307HV LED digital displays for movements on lateral material guides

STANDARD AND CUSTOM TOOLING Carell manufactures tooling in-house in our CNC Machine Shop for rapid turn-around and enhanced quality control for Angle Rolls,Tube & Pipe Rolls, Special Profiles, Supports, Cap Rail, Half Pipe, Coils, Traction & "V" Groove Tooling. STANDARD AND CUSTOM TOOLING Carell manufactures tooling in-house in our CNC Machine Shop for rapid turn-around and enhanced quality control" TUBE & PIPE ROLLS Most Common Tube OD & Pipe Sizes In Stock. Hardened, Solid Tool Steel. Any Size Can be Made. Specify Smooth or Knurled. Also available in Polymer Material for Delicate Finishes. CUSTOM TOOLING FOR SPECIAL PROFILES We can produce special tooling for a variety of machine makes, types and models. Forward drawings of your profiles and machine information for a quote TOOLING AND SUPPORTS FOR HALF PIPES & COILS 3000 Series Machines can be equipped with tooling for producing half tubes from strip & supports for coiling. Overhead supports (man. or hydraulic) may have coil diameter & pitch adjustment or be interlocked to NC/CNC controls. TRACTION TOOLING BEAMS BENT HARD WAY Larger capacity 3000 Series Angle Rolls can be fitted with traction tooling and rolls for effective rolling of beams as well as channels bent in the X-X axis or 'Hard Way" SECTION DIES FOR PLATE ROLLS For Plate Bending Machines with extended shafts, roll sets for profiles and tube or pipe can produced. Call to discuss capacities and pricing. "V" GROOVE ROLLS Roll Bar Stock and Square Tube on a 45° angle to Create a Unique Look. Available for all Models in both Smooth and Knurled. Made of Solid, Hardened, Tool Steel here at Carell Corp. CUSTOM ROLLS We manufacture Tooling In-House To Roll a Wide Range of Custom And Special Profile Shapes in a Variety of Material Types. CAP RAIL SOLUTION A For Aluminum & Brass Cap Profiles. Three Fully Contoured Polymer Rolls. Six Steel Shoulder Plates May be Required. Call for Capacities CAP RAIL SOLUTION B The Most Economical Cap Solution. 3 Semi-Contoured, Hardened Steel Inserts to Match the Cap. Most Commonly Used With Standard Tooling. Furnished Smooth. CAP RAIL SOLUTION C Best Suited For Production Jobs. 3 Fully Contoured, Hardened Steel Rolls Built To Match Your Cap Sample. Furnished Smooth. REPLACEMENT COMPONENTS Lost a piece or need a smooth surface component for working with soft or delicate material? We stock Smooth and Knurled standard roll components for all machines. CUSTOM TOOLING Send Drawings and/or Samples For Pricing on Custom Rolls And Accessories. Carell also can create custom tooling for other metal bending machines such as; PARMIGIANI, COMAC, FAMAR, ICARO, MEMOLI, CBC, SIMASV and more… Carell Corporation can handle your tooling/rolling needs for aluminum extrusions, satin/polished/pre-painted finished sections, steel/brass/aluminum decorative hand rails, oversized 'U' and 'C' shapes, overwide flats, half tube production from flats, hard way beam and channel rolling to name just a few.

We offer a full range of flexible, creative, easy-to-use high tech iron workers. Cold work Iron bar, saving time, space, and money to mold into desired shapes. Carell Ornamental Equipment Represents the Best Most Versatile Machines Available! We manufacture and stock; tools for bending, tube rolls, pipe rolls, special tooling and custom tooling. We also carry the following brand names Parmigiani, Comac, Memoli, Omcca, Simasv, Isitan, Icaro, Offmer & More! ​ SUPPORTER/MEMBER Carell Corporation Ornamental Metal Working Equipment Represents the Best, Most Versatile Machines Available. These machines are Built to Exacting Standards for Industrial use and Long-Term Dependability. Knowledgeable Carell Machine Specialists are also just a Phone Call away and Ready to Help You! BACK TO TOP ORNAMENTAL BENDERS CARELL In-Stock Specials Click Image or Scroll Down for descriptions, standard equipment, options & technical specifications Request-A-Quote E-MATIC E-MATIC CE/CN Ideal for Tight Bends and Special Applications CARELL In-Stock Specials Request-A-Quote The Carell E-MATIC by Memoli; incorporates a rotary bending head, a wide stable base and digital programmable controls into a uniquely versatile package. Heavy Duty, Rugged unit is compact and easy to use. Tooling changes are rapid and simple. Application of the different attachments are shown below or use of easily produced special tooling offers unlimited versatility Video: Carell E-Matic Universal Bender SPECIFICATIONS: E-MATIC UNIVERSAL BENDER Main Drive: Speed: Weight: Memory: Controls: Voltage: Dimensions: 4.50 HP 7 rpm 500 lbs 45 steps 24 VAC 220V – 3PH – 60Hz 34” x 25” x 39” h Optional "SUPER SCROLL" 20" Diameter x 5/8" Bar PF Option – Bar Brake/Folding Tooling Bend up to 1” Round Rod, 4” x 5/16” Flat Bar D Option – Bar Twisting Tooling Twist up to 7/8” Sq. 1-1/2” x 3/8” Flats CT Option – Tube Bending Tooling Bend up to 1-1/2” OD x .079 wall CS/3 Option – Scroll Tooling w/ 3 Formers Bend up to ½” Sq. or Round – 1-1/4” x ½” Flats CF Option – Curve/Radius Tooling Bend up to 1” Round Rod, 2” x 9/16” Flat Bar BACK GALILEO G50 Heavy Duty - Up to 2" Pipe Capacity CARELL In-Stock Specials Request-A-Quote The G50HV Series are Heavy Duty, 3 Roll Universal Bending Machines with SOLID STEEL WELDED FRAMES, LED Readouts, high strength shafts and ALL 3 ROLLS DRIVEN through heavy duty drive trains for high torque delivery and energy efficiency. Video: G50 Universal Bender-Ornamental Options 3 Rolls Driven: Heavy Duty Drive Train Scroll Tool: 1-1/2 x 3/16 Scrolled on Flat Bar Twist Tooling:up to 7/8” Sq. and 1-1/2” x 3/8” Flat Bar Bar Brake Spiral Tool G50-HV Specification Chart BACK G50 ORNAMENTAL

We manufacture and stock; tools for bending, tube rolls, pipe rolls, special tooling and custom tooling. We also carry the following brand names Parmigiani, Comac, Memoli, Omcca, Simasv, Isitan, Icaro, Offmer & More! ​Carell Corporation Job Opportunities: See our open positons at https://www.ziprecruiter.com/candidate/search?search=Carell+Corporation&location=Mobile%2C+AL Innovation, Quality & Performance Backed By Decades Of Experience 251-937-0947 Career Opportunities Click The Image Link Above To See The Available Job Opportunities At Carell Corporation & Eagle Bending Machines, Inc.

Carell offers professional fabricating machines and solutions. Plate Rolls, Angle Rolls, Tube & Pipe Benders, Ornamental Benders and more THE 911 BLASTER! THE LATEST IN INNOVATIVE LIQUID BEAD BLASTING CABINETS ON SALE! $4,995. What is Liquid Bead Blasting? Liquid Bead Blasting is, by technical definition, "a surface refinishing process used to clean and restore surfaces." Unlike traditional dry blasting, liquid bead blasting adds water to the mixture that allows for a smoother finish and preservation of intricate details. What makes the The 911 Blaster Cabinet different? We have developed a special blend of abrasive media that provides the most effective cleaning process. We also have engineered a top of the line nozzle that ensures the right amount of pressure. Here is just one example of the difference between dry sand blasting and liquid bead blasting. See our YouTube page and other social media for other examples of pieces that have been sand blasted and liquid bead blasted What's the difference? If you have ever done any type of dry blasting or even used plain sandpaper, you know that it does not give you a smooth finish. With the 911 Blaster, it is so smooth you can still paint and cover afterwards. The difference is the finish is better. There is no dust and is even quicker! The 911 Blaster from Carell Industrial Solutions is manufactured completely in-house with high quality materials and parts. We stand behind our product! Ask us about our cabinet warranty and the lifetime warranty offered on our custom made nozzles! Endless Possibilities: * Restorations: Vintage Motorcycle Parts Valuable Antiques * Rebuilds: Vehicle Parts Aluminum Engine Parts * Repairs: Hydraulic Cylinders and Parts For More Info and Applications Call 251-937-0947

Plate rolling is one of the most complex metal fabrication processes. Changing just one variable directly affects numerous others. Today many plate rolls have CNCs with data tables that draw from decades of rolling experience, which has made the process much more predictable. Request-A-Quote BACK BACK BACK BACK BACK BACK BACK Published Articles: "Plate Rolling Rolls On" By: Francesco Massa Advanced controls make a highly variable process more predictable. Click here for PDF Comprehensive Guide to Plate Rolling Machines "A Rundown On Rolling Machines" By: David Donnell, President, Carell Corporation The type of bending application determines the style of machine and bending capacity needed to do the job. Click here for PDF See Below for Quick References by Subject - More About Roll Forming - BACK TO TOP Plate Roll Bending Selection Guide Plate rolling is one of the most complex metal fabrication processes… Changing just one variable directly affects numerous others. Today many plate rolls have CNCs with data tables that draw from decades of rolling experience, which has made the process much more predictable. With predictability also comes automation. Some plate roll operations now have automated the loading, rolling, and unloading, producing precisely rolled workpieces time after time. QUICK LINKS Quick Links by subject: Plate Roll Manufacturers Machine Capacity Pre-Bending vs. Rolling Ratings Pre-Bending Ratings Rolling Ratings Automation Three Roll Initial Pinch Double Pinch Automatic NC or CNC Controls Variable Geometry Plate Rolls True Pyramid Machines Two Roll Machines Vertical Format Plate Rolls Optional Equipment & Accessories Cone Rolling Devices Lateral & Overhead Supports Extended Roll Shafts Roll Movement Up/Down Roll Balancing Plate roll manufacturers Plate roll manufacturers commonly rate machines according to baseline material yields between 36 to 38,000 psi. When choosing a roll you must refer to your mill delivery certificates, to your proposed supplier or to the Internet to specifically verify the average yields of the plate you need to roll. In our current manufacturing environment, the term “A36 Steel” has little correlation to the actual yield since the A36 generalization encompasses many specific sub-denominations. Some of these may have yields strengths of 70,000psi or more. The old common term “Mild Steel” will generally represent steels with yields of 45,000 to 55,000 psi. Machine capacity must be commensurate to your material yield. Most roll manufacturers can provide tables or graphs that allow you to match machine capacity to the material yield. Pre-Bending vs. Rolling Ratings will often be presented in numerous formats and tied to a minimum shell diameter at a given thickness for each Plate Roll model. The Pre-Bending operation is performed at the leading and trailing edge of the sheet (in most cases, the eventual seam). Sheets cannot physically be bent completely to the leading edge and will thus leave what is referred to as an ‘Unbent Flat’. As a rule of thumb, the minimum you should expect for an unbent flat length is 1.5 times the material thickness. This may approach 2.5 to 3.5 times the material thickness for thicker plate. It is this pre-bending operation which attempts to reduce the unbent flat to the minimum possible length which requires the most power from the machine. This operation is also very critical as care must taken to ensure that the sheet does not disengage from between the rolls. Because of this “safety factor” claims of unbent flats equal to 1.1 times the material thickness should be thoroughly investigated as it is rare that this can be achieved. Pre-bending ratings with the shortest possible unbent flats are necessarily lower than the overall rolling capacity rating for any given machine. You must be mindful when reviewing machine ratings since the maximum total rolling capacity is generally expressed with the intrinsic requirement of multiple rolling passes, longer un-bent flats and larger minimum shell diameters, even if not entirely clear from reading a simple roll specification. Un-bent flat lengths for any given sheet are a function of thickness, width, cylinder diameter, machine geometry, material yield, top roll size, operator proficiency and other factors. Rolling ratings anticipate that the plate is in motion, translating through the machine. This is called “dynamic” as opposed to the “static” pre-bending operation when the sheet is held between the rollers and one or more rolls move upward to “curl” the leading edge. Dynamic rolling mode will always allow a greater thickness to be rolled than can be bent during static pre-bending. Automation in the workplace is becoming more common as pressure increases to reduce labor costs. Most all CNC and NC controlled machines are 4 roll types. Automated controls are recommended for high volume or significantly repetitive cylinder or shell production or to roll complex shapes that are not easily reproduced by using manual machine controls. Multiple bends, variable radius bends, ovals and the like are some examples. Over automation on a roll when the production volume is not significant can be a costly mistake. Three Roll Initial Pinch or Single Initial Pinch Plate Rolls are generally for lighter capacity applications and may be electro-mechanical or hydraulic. They work by "pinching" the flat sheet between two counter-opposed rolls while the third offset roll or ‘bending roll’ moves upward to contact and then bend the sheet. When rotation of the rollers is activated, the sheet exits at a given radius. With the sheet cut to the developed length and the bending roll properly positioned; the part is rolled into a cylindrical form, where it can then be welded at the seam to produce a cylinder. The upper roll is in a fixed position; the lower pinch roll can move up/down to pinch the material. The third roll (the forming roll) is also adjustable. To remove a rolled cylinder, it must be extracted from off of the top roll. Machines are generally equipped with some type of release mechanism on the top roll to allow extraction of the cylinder. Typical methods are either a forward tilting or releasing top roll or a removable end yoke. In most applications, these machines require removal and re-insertion of the sheet in order to pre-bend both ends. They are cost effective but in contrast may be more labor intensive in a production setting. There were many large mechanical initial pinch machines built during the 1930’s, 40’s & 50’s and can be found on the used market. All have cast frames as modern alloys and welding techniques had yet to be invented. Double Pinch Plate Rolls are available from light to extremely heavy capacities and may have three or four rolls. The terminology can be confusing as these units may sometimes be referred to as ‘double pinch pyramid plate rolls’ or ‘double initial pinch plate rolls’. Both three and four roll styles have fixed position top rolls and two offset rollers or ‘lateral rolls’, one on each side. The 4 Roll styles have an additional roller directly underneath the top roll, which constantly pinches the plate during rolling. Double Pinch Rolls can pre-bend both ends of the plate without removal as is required with single pinch rolls. Three Roll machines generally require pre-bending the leading end, running the sheet through the machine to pre-bend the trailing end then switching roll rotation direction to roll the cylinder body. Four Roll Plate Rolls have a slight advantage in cycle time since t hey permit pre-bending of the leading edge, rolling the cylinder body and finishing off of the trailing edge all while rolling in the same direction. High volume products can be produced faster when using a four roll machine. Smaller machines can be mechanical but most modern machines are hydraulic and include drop end yokes for easy extraction of the work-piece. Automatic NC or CNC Controls and Four Roll Plate Rolls: Automatic cycle systems are generally used only on four roll plate rolls because there is minimal chance for slippage since the sheet is constantly pinched between the top roll and the 4th roll or “pinching roll”. Automatic controls use an encoder to track movement of the plate through the machine. If the plate slips, the bending roll movements will be out of sync with the material’s translation through the machine. Variable Geometry Three Roll Plate Rolls are not new but are gaining in popularity around the world. They are built for medium, heavy to extremely thick plate applications. The top roll moves up/down and the lower two rolls each move horizontally. This lower roll movement allows increasing the offset distance from the top roll and commensurately increasing mechanical advantage in bending. A machine of this type works well over a wide range of material thickness. By adjusting the geometry they can be used similar to single pinch, double pinch and pyramid style machines and require minimal sheet movement during the pre-bend operations. In the past these machines were commonly found in shipyards but now are being placed in general job shop and manufacturing applications. True Pyramid Machines are not generally manufactured by modern roll builders. They may be found on the used market and are more common in developing countries. They have 3 rolls, both lower rolls fixed in position with the top roll moving up/down. In general they leave very long un-bent flats and have only one or two rolls motorized in rotation. Some special application machines are still produced on a custom build basis and are mostly found in shipyards. They will have the lower two rolls spaced closely together and be of small diameter with midpoint support trunnion rollers. Two Roll Machines are designed for thin or light gauge material rolled to reasonably small diameters. They use a large diameter urethane coated pinch roller which moves up with extreme pressure against a small diameter steel top roller. A mandrel or drum, very close in OD to the desired ID of the part is fitted over the top roll. Two roll sheet rolls are extremely fast and will roll round cylinders or shells even if the blank has large cutouts, voids or holes. Since they require a mandrel for each different part diameter and material thickness they are not as versatile as some other machines. For dedicated high speed production of light gauge cylinders they can be an optimal solution. Vertical Format Plate Rolls can be of nearly any geometry, double pinch, single pinch or pyramid. Vertical rolls are most often used for rolling large diameters and can be advantageous when used in the field for storage tank production. Carell offers automated Vertical Tank Production Systems which are fed from coil stock and can include vertical sheet cutoff and automatic vertical seam welding among other options. These Systems can be used in-house or in the field and increase production output while reducing labor input Optional Equipment and Accessories are offered for most Plate Rolling Machines. The most important items to consider are hardened roll surfaces and cone rolling devices. With today’s harder materials and laser/plasma cutting techniques it is imperative to have a hardened outer surface on the rollers. Look for hardness ratings in the range of 52 to 55 Rockwell C Scale and also for the indication that the hardening process used is “induction hardening”. Hardness in the 52 to 55 RCS range will have a reasonable hardness penetration depth to provide long lasting protection against roll surface wear. Hardness exceeding 58 RCS will have a shallow penetration and a more brittle outer surface which can result in cracking or crazing. Cone rolling devices permit the operator to roll a conical shape and are standard on some machines. Some machine brands require a machine to be pre-disposed at the time of purchase if cones will be rolled in the future. This important point should not be overlooked. Lateral as well as Central Overhead Supports are optional on nearly all Double Pinch Plate Rolling Machines. Some rolls may require pre-disposition for the eventual addition of hydraulic powered supports. Overhead supports prevent lighter materials from collapsing when rolled to large diameters and must be sized according to plate thickness and shell diameter. An overhead support is not a crane and it is designed to sustain nominally only 40 to 60% of the total shell or cylinder weight. A side support can also assist in this function to prevent light materials from re-curving toward the floor if the radius is very large. Some plate rolls are designed with Extended Roll Shafts that protrude through the machine frame at the yoke end. Section or Pipe Dies can be fitted on these ‘stub’ or extended shafts. Some machines are designed with collars inside the machine frame that can be used for profile rolling but when rolling a complete 360 degree hoop it will be impossible to remove from the machine. It is also not possible to coil with inboard collars. It is not practical to anticipate rolling angle iron on a plate roll. Angle will always twist when being rolled. Plate rolls do not have outboard adjustable lateral profile guides to prevent this inherent twist. You should consider using a section rolling machine or double pinch angle roll instead for these applications. In general, section dies on plate rolls are good for bending flat bar the hard way, rods or small pipe. Roll Translation or Roll Movement Up/Down is accomplished either by using inclined linear guides or via swing arms. Direct rectilinear guides direct the thrust of the roll directly toward the top roll and have the fewest moving parts. Rectilinear guides are found on small as well as extremely high capacity rolls. Swing arm designs are not common on large machines and have more moving parts, pins, and bushings. Roll Balancing can be achieved in a variety of methods. Maintaining the bending roll or rolls parallel to the top roll is necessary in order to produce a good true cylinder. Volumetric type and electronic type balancing are the most trouble free for general job shop use. They have up to 80% fewer moving parts than swing arm balancing systems and thus significantly lower maintenance costs in the long run General Note: Roll Bending Machines are very dangerous if used carelessly. It is the responsibility of the owner to ensure the installation and proper use of point of operation safety guards or devices. Machine capacity Pre-Bending vs. Rolling Ratings Pre-bending ratings AUTOMATION Rolling ratings Three Roll Initial Pinch Double Pinch Automatic NC or CNC Controls Variable Geometry Three Roll Plate Rolls True Pyramid Machines Two Roll Machines Vertical Format Plate Rolls Optional Equipment and Accessories Cone rolling devices Lateral and Overhead Supports Extended Roll Shafts Roll Translation Roll Balancing