If your belt is old or well used, the structural integrity may have weakened over time, and the most common place for it to break would be in the joint. Check for inconsistencies in the quality of your work pieces – both before and after sanding. Thanks for your interest in Uneeda. If the belt is not tracking properly in the machine, it can cause tears in the material. Wide belt sanding is anything but simple, so when you’re experiencing problems it can be complicated to isolate and identify the source of the issue. October 19, 2014 ... We use the purple 3M product and there is a new belt on the head that is having the problem. In some cases, the belt may have been cut improperly. Too high sanding load to compensate for machine problems. Wide belt sanding is anything but simple, so when you’re experiencing problems it can be complicated to isolate and identify the source of the issue. Check to see that your tension pressure is set correctly, based on the following standards: for paper – 45-55 psi, cloth – 55-65 psi and polyester – 65-85 psi. 51 in. If you are trying to compensate for issues with the machine, such as a damaged contact roller/pad, poor alignment between sanding unit and feed system, damaged or worn feed system (feed belt or rolls), or faulty extraction system, this can cause problems with your belts, and cause burning. Belts should always be hung, preferably on a round rod, to maintain their shape. A: A cross belt sander is used primarily in veneer tape removal applications. Because of this design, veneer tape is removed with one head, whereas two heads are needed with other wide belt … In a high static environment, the dust will stick to various surfaces inside the machine and collect over time, leading to various problems. When in doubt, refer to the following to check that you are in the correct grit range for your application: What material are you sanding, and what type of belt are you using? Make sure they have hung prior to inserting them into the machine and always verify the quality of the belt prior to loading. Forum Responses wide belt sander is a key part of the manufacturing process and workflow. May 6, 2014, Re: Alternating glossiness in solid surface, Re: repairing a conveyor belt on a wide belt sander. I'm using cloth backed sanding belts that are dark brown. 3. Lastly, certain types of joints are reversible – i.e. Craftsman Large Belt Sander with 4" wide belt capability - $40 (Wichita - Maple / Ridge Rd. Your belt may break as a result of too much loading. In light of this difficulty, the abrasive technicians at Fintech Industrial Abrasives have compiled a list of the most common wide belt sander issues and their respective potential fixes. Pay careful attention when unpacking your belts from shipping or storage. If you have excessive static problems, review your climate, the temperature and humidity levels in your shop and locale, as you may need to amend the climate controls in your shop. Question (WOODWEB Member) : If this is the case, you may have one of the following problems: too high removal rate of a removal rate, large thickness variations of work pieces, or foreign particles in the sanding machine or on the work surface. First, inspect the elements of the system and check to make sure the system is not clogged. Because the action of sanding is based in friction, or the constant rubbing together of two surfaces, the natural results are heat and static. With all the moving parts and variables associated with wide belt sanding, any number of things can easily go wrong. One solution to static issues is to ground the sander by literally using a metal screw and rod from the conveyor bed into concrete floor and several feet into the ground below. For more information about how to properly ground the sander, click here. My shop runs a 1989 AEM 37” single head wide belt sander. While paper belts may lead to a better finish, if your application requires a more durable or flexible abrasive, cloth may be a better fit – so as to avoid breakage, tears and creases. That’s because the winter has low humidity, which is an environment more conducive to static electricity. Part 1 of Article (visible defects on work piece). It has the air tracking system on it. Safety Speed Cut 3760 WBS3760101 Sander. Each grit is designed to remove a certain amount. ).$40 Cash. If belts are stored on the floor, they will absorb moisture and become out of round, leading to many issues. One common issue that can lead to broken belts is tracking. See those areas for further information. Our wide belt technicians see several common issues, from chatter and other surface faults, or burned belts and too much dust, and they help our customers to get their sander back up and … Listing to be quickly deleted when it sells.=====I will respond by email within 24 hours at the very longest. If dark colored belts were to blame we'd all have problems. From contributor T: Check to make sure you are using the proper grit sequence for your application and that your work pieces are the same thickness and clear of dirt or other residue. Damaged from loading/unloading machine, packing/shipping, storage. Use an air flow meter and calculator to check the CFM (cubic feet per minute) for your dust extraction system, and make sure that it is operating to the manufacturer’s specification. Complete the form below to contact us with your questions, Top 8 Wide Belt Sanding Problems & How To Solve Them – #5-8, For more information about how to properly ground the sander, click here. If your belt is not tracking properly on the machine, that means it the belt may actually be coming off of the rollers, or is otherwise mis-aligned while in action. It moves fairly fast one way, but is really slow moving the other way. If the reading is more than +/- .01, the sander will need grounding. Troubleshooting Widebelt Sander Electric Eye and Belt Tracking Widebelt sanders use an electric eye to control belt oscillation, and the system can malfunction in peculiar ways. The following areas provide a starting point for determining the cause of the breakage. If you’re unsure, contact your UNEEDA rep to determine if you might be better served with a different product. Sanders Wide-Belt Sanders Horsepower 1/4 HP 1 HP 10 HP 15 HP 2 HP 1/3 HP 1/2 HP 20 HP 30 HP 5 HP Maximum Board Thickness 6 in. I have a 1986 model 43" A.Costa wide belt sander. If the rollers aren’t flat (worn unevenly), they need to be removed, flattened or recoated then reinstalled. Belt Sander Tracking Problem. You may be trying to remove too much in one pass, which could cause the belt to become dislodged. Symptoms for issues with wide belt sanders can effectively be broken down into two categories: machine/abrasive problems and workpiece visual defects. Topic tags/keywords: aem timesaver wide belt sander optical sensor belt tracking Hello All, sorry for the long explanation, but we’ve tried a LOT of things to get this to work. This in-depth article, goes into the machine maintenance issues that will most likely be the source of your issues. Re: Stroke Sander: Good for finish sanding? If the rollers have worn unevenly or flat, on the other hand, Parallel is something we correct with indicators. As you might imagine, this can cause all sorts of issues, some of which have been mentioned previously – like belt breaking. Do some manufacturers make their belts out of lighter material? The belt may simply be used up and it may be time to replace the belt. For Craftsman / Porter Cable / Dewalt belt sander tracking problems, the solution is the same. Belts should be hung – not stored on concrete floor, as they absorb moisture and become out of round. M-jump 18 PCS 3 x 21 inch Aluminum Oxide Sanding Belt Kit-Include 3 Each of 60 80 120 150 240 400 Grits-Premium Sandpaper Sander Belt for Portable Belt Sander 4.7 out of 5 stars 1,822 $14.79 $ 14 . It has a dual acting air cylinder that moves the head back and forth. Our wide belt technicians see several common issues, from chatter and other surface faults, to burned belts and too much dust, and they help our customers to get their sander back up and running and improving the overall process and results. It’s to the point where it will track one way, but not the other. When loading or unloading, pay careful attention to correct placement and not catching the belt anywhere it shouldn’t be. You may have glue or resin built up on the work piece itself, leading to additional residue getting caught up on the belt, as a result of the heat produced from the sanding action (friction). Wide Belt Sander Owner’s Manual Model 3760 Model 4375 Safety Speed Manufacturing 13943 Lincoln Street NE Ham Lake, MN 55304 Tel: 763-755-1600 Fax: 763-755-6080 www.safetyspeed.com email@example.com I've forgotten who it was told me that the tracking sensor couldn't pick that up, and to paint the inside of the belt white so the sensor could pick it up. Uneeda has two full time wide belt technicians that make site visits to our customers to help address these issues and get you set up for success and achieving the best finish for the most effective and efficient price and process possible. Check if this is the case and clean it. You can use a static meter to check the static discharge. It has a dual acting air cylinder that moves the head back and forth. tracking issues. 4. SHOP FOX W1738 Wide Belt Sander.
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