CS Unitec Portable Pipe Sander Case Study


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A case study on CS Unitec's LBR 1506 VR electric portable pipe sander

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CS Unitec Portable Pipe Sander Case Study

  1. 1. Portable SanderFinishes the Job forMassachusettsCompanyCase Study by Tom CarrollPresident, CS Unitec, Inc.This article is an adaptation of thearticle published in the September,2002 issue of The FABRICATOR® AAMS Corporation, a miscellaneous-metals fabricator in Taunton, Mass.,recently took on a large project for OlinCollege of Engineering, anew institution of higherlearning near Boston.The project called forfabricating about 1,500 Figure 1feet of 1-1/2 in. stainless grinder had been usedsteel pipe for handrails mainly to grind downand stairway railing at the welds, and AAMS wascollege (see Figure 1). doubtful that it could The challenge for AAMS produce the highlywas not so much in the size of the Figure 2 polished finish necessary to meetproject as in the finish required. A the customers specifications. Also, whenpolished look was specified for all working with 90-degree bends, operatorscomponents of the job, which involved found it difficult to move this type of grindera large number of 90-degree corners. into the tighter spaces. At the same time, AAMS also was It soon became obvious that the finishworking on a complex project for a retail- produced by a conventional grinder wouldresidential building at Uphams Corner in not be acceptable. A swirl pattern ratherBoston. The company was constructing than a polished finish was the result from400 ft. of railing for handicap entrance this type of grinding (see Figure 3). Thisramps. The ramp rails were fabricated was caused by the circular rotation of thefrom 1-1/4-in. Schedule 40 aluminum pipe grinding disk moving the abrasive againstwith aluminum molding (see Figure 2). the grain of the pipe. The company couldAfter the pipe was welded and ground, have achieved a uniform grain by handthe railing also required a polished finish. polishing with steel wool, but the company AAMS wanted to be very careful with considered that method too time-consuming,the rail polishing because both customers and it required a great deal of manual effort.required it for aesthetic purposes. Thecompany previously had relied on a 4-in. Continued insideangle grinder for finishing. The angle
  2. 2. the belt tightened continuously for different pipe diameters. AAMS continued to use the 4-in. angle grinder to bring down the welds on both projects, but to achieve the final finish it put the pipe sander to the test. The operator placed the sander over the pipe, which fit into a contour on the machine, and then walked it along the length of the pipe while an abrasive belt rotated around it. Because the sanding belt moved around the circumference of the pipe, the sanding was done in one direction, enabling it to meet the Figure 3 polishing specifications. The operators went through several This led to a decision by AAMS to search steps with the pipe sander to get thefor an alternative. The company decided it polish that was needed. They beganneeded a finishing machine specifically using it with coarser 36-grit abrasivedesigned for tube and pipe. belts to remove gouges or imperfections While scouring the Internet to find a tool in the milled pipe. Next they went to athat would help them achieve the required medium 80 grit, which smoothed out thefinishes, AAMS considered several pipe pipe, removed any marks left by thesanders. It chose the CS Unitec pipe coarser grit, and produced a matte finishsander, model LBR 1506 VR. According in preparation for final polishing. Theto Brendan Pequita, final polish wasAAMSs layout made using a finespecialist, the pipe 120 grit, whichsander was gave the pipelightweight, making the specifiedit easy to use, and it decorative lookwas also affordable. (see Figure 5). In addition, it met AAMS estimatesanother of the that finishing thecompanys two jobs with therequirements by pipe sander tookbeing portable half the time handenough to be used polishing wouldboth in the shop and have taken. Thein the field (see tool proved to beFigure 4). The adaptable to everysanding machine surface of the railswas suitable for 3/8- for both projects.to 10-in. pipe, and It was easily Figure 4
  3. 3. maneuvered around corners, fitting rightinto the 90-degree angles. In addition,Pequita said, "Because the machine didall the work, there was much lessphysical stress for the operators." The pipe sander not only helped AAMS Figure 5to finish these two projects as prescribedin a reasonable time frame, but it alsogave this fabrication company newcapabilities that can help it expand itscustomer base. Pequita predicted that"Now that we have the pipe sander, wewill be much more likely to take on otherfinishing work in the future." Model LBR 1506 VR Electric* Portable Pipe Sander Product Features • Continuous sanding belt speed adjustment, from 33 to 100 ft./sec. • Full-wave electronic control with overload protection and smooth start • 11 Amp variable-speed electric motor provides high torque • Shut-off carbon brushes • Continuous belt tightening adjustment • Ergonomic design and lightweight construction reduce operator fatigue • Wide assortment of sanding belts, including polishing fleece for stainless steel * Pneumatic model also available
  4. 4. Also available from CS Unitec… Surface Finisher Model LP 1503 VR (Electric) CS Unitec’s Portable Surface Finisher works on steel, stainless steel, aluminum and all other metals, as well as wood and plastics. It is the perfect industrial machine for polishing, blending, cleaning welds, graining, dulling, brushing, deburring and other surface sanding and polishing applications. This electric Surface Finisher with 4"-wide face produces shadow-free, uniform surfaces with ease. Optional front and rear guide rollers ensure an even finish. This 11 Amp variable- speed electric model provides high torque output. Loadspeeds: 1200 to 3700 RPM.ECO-50 Magnetic DrillCS Unitec offers a full range of compact andpowerful Magnetic Drills designed for fast, accuratehole cutting, on the job site or in the shop. TheECO-50 (shown right) is a lightweight (29 lbs.),two-speed high-performance drill. It is built with acompact height of only 161/2", so it is easy to drill insmall spaces. The ECO-50 also features a strong10.5 Amp motor, 2-speed gearbox and an HDdual-coil magnet with a holding strength of3740 lbs. It is capable of drilling up to 2"-diameter holes with Annular Cutters; and, witha 5/8" chuck (Part No. IBK-19), the ECO-50can easily convert to a standard drill press. CSUnitec also includes a standard Easy Quick-LockCutter Holder and a one-year warranty with the purchaseof this drill. To find complete specifications and drillingcapabilities for any CS Unitec Magnetic Drill, visit thecompany’s Web site: www.csunitec.com CS UNITEC, Inc. 22 Harbor Avenue, Norwalk, CT 06850 800-700-5919 • 203-853-9522 • Fax 203-853-9921 Email info@csunitec.com • www.csunitec.com