See Figure 2 for an illustration of the load zone and the area that should be supported by the shims. (idVI]u ?%gL`IxL% A Stainless steel shim stock has a coil length of 6x50 rolls. 117 17 In addition to unwanted movement, additional spaces also increase opportunities of dirt and corrosion to develop.
When ordering, arbor shims are identified by their inner diameter and thickness. When ordering, slotted shims are identified by their width, length, and thickness. Choose your shim supplier with care and keep your shim boxes fully stocked with all available thicknesses, in all the sizes needed to adequately support the load zones of the machines in your plant. Sheets of shimare also available in widths from 25mm to 1 metre. 0000063820 00000 n
15 0 obj 18 0 obj Arbor shims are machined to specific tolerances for an exact fit and used in machinery alignment applications on milling cutters, saws, and grinding tools. For one thing, you will be able to cut only the thinner thicknesses with scissors or shears, whereas thicker thicknesses (over 0.004") will require using an acetylene torch or a saw, which is labor intensive and presents several safety concerns. REGISTER NOW! Just releasedMRO Best Practices Special Report - a $399 value! Material Certificates and Certificates of Conformity are available. Intelligent asset management, asset condition monitoring and reliability in a single conference and expo! Some standard shim sizes can also be determined based on standard motor frame numbers. Over 15,000 standard and special purpose fasteners, clips, nuts, and wire management solutions for use in a broad range of applications and industries. Best Practices: Machinery Alignment Shimming, 2022 Certified Reliability Leader Workshops by Reliabilityweb.com, 2022 Certified Maintenance Manager Workshops by Reliabilityweb.com, International Maintenance Conference (IMC) 2022, Job Postings for Maintenance and Reliability Professionals, Free eBook: 11 Problems With Your RCA Process and How to Fix Them, Alignment, Vibration, Balancing and Ultrasound Training mapped to UPTIME ELEMENTS, Asset Performance Management and Reliability Software. w?'uo@to;[rsD?NMMg1.dON>y~"&Ejwgo@"+ i{%Mwvq0yrxfxKE^LL%gz=Np>2ES;3ZNveGQ4 Thicker thicknesses are always nominal (just as the steel mill rolled the sheet) and therefore, should be always miked. G.L. % 1 0 obj endobj 0000002881 00000 n
<>/A<>/Type/Annot/Rect[100.572 33.315 171.811 26.004]>> Punch stamped shims is a sign that they are not flat, resulting in a leaf spring effect under the machine's feet that contributes to a "squishy foot" soft foot. 0000001604 00000 n
This affects air gap clearances between internal components and places undue stress on the feet or other machine parts. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); This field is for validation purposes and should be left unchanged. To step shim correctly, choose a shim thickness that will allow you to stack no more than four shims to fill the uneven air gap between the underside of the foot and its support surface. A joint venture between two of the worlds largest steel companies inspired innovative approaches to maintenance reliability that incorporate the tools, technology and techniques of today.
See Tables 1 and 2. J#;F jIrI=P4T*KJLbRh$wVC"[.uT4wFH#v!XEMG$!zJ 3@^Q:*%-&( ;SKHLwAN[J9c[ 9<5X @q$82f'25'YLi82wdKL
uSQqd( ppmF4. This can be caused when the feet are accidentally bent, or when the machine is "rolled" to accommodate a horizontal misalignment problem (definitely not a best practice!) Never allow your fingers to get under a machine foot! 0000002224 00000 n
Besides his work, Alan enjoys spending time with his family and numismatics. Slip the cut shim stock into the desired space. There are ever-increasing opportunities to create new and sustainable value in asset-intensive organizations through enhanced use of technology. Repco Technology Ltd.
<> <>/A<>/Type/Annot/Rect[34.072 786.53 97.6068 765.97]>> For instance, if you must fill a 20 thousandths tapered air gap, dividing this gap by five yields an ideal step shim thickness of 4 mils. Their common feature is an open, often Ushaped, slot. Contact our knowledgeable sales engineering staff for any questions or assistance regarding our selection of stainless steel shim stock. Although not elegant, the step shimming solution is expedient, easy and economical, and will prevent a much more serious machine frame distortion problem, allowing your machines to run satisfactorily until your next major outage when you can schedule the time and resources to fix the problem properly in a more permanent manner. edf40wrjww2Admin:SiteKeywordsaloma, shims, shim, shim stock, shim kits, laser cutting services, laser cutting, water jet services, water jet cutting, waterjet, waterjet cutting, cnc machining, shot blasting, shotblasting, alignment, laser alignment, reverse dial indicator, indicator clamp, efficiency kit, mini kit, plastic shim stock, aluminum shims, feeler gauge, laminated shim, washers, gaskets, custom shim, metal stampings, aircraft shims, tab shims, precut shims, pre cut shims, slotted shim, slotted shims, metal shim, pump alignment, pump parts, rom-a-lign, rom a lign, romalign, contract manufacturing, castor shims, pillow block shims, tube cutting, pipe cutting">
edf40wrjww2Admin:SiteDescriptionAloma Shim and Manufacturing your source for Pre-Cut Shims, Shim Kits, Custom Shims, & Precision Fabricated Parts. Fax | (724) 746-0711 14 0 obj These spaces are compressed upon torqueing of bolts or during the operation of a mechanical component. Visit our product FAQs page to learn more about the shims we offer. If the existing standard shim sizes cannot properly fit the load zone of a given machine foot, or you cannot accommodate the anchor bolt(s), consider having custom shims manufactured in the exact shapes and sizes that you require. endobj Slotted shims are measured by their thickness and width as well as the slot depth and width. 1XRx`KM&9JJCZXx44FF! u4BZ&U V3VL *aV11A% bhH#mtBPIE*I> u7CHh$1ch\lDjJIc( v$D7C!>r& p5h5(Ms5:!*>2@I]KE> Worse yet,
These are all bad practices. endobj (Contrast this with some brass alloys that can yield as much as six percent!). are produced from gauge material with a very wide tolerance range. Telephone:02476 214442. After you have cut your shims by hand, it is essential to deburr them carefully with a ball peen hammer and file. xref
This means you need
Note: Standard delivery is now 10 working days. This leaves us with the only other possible solution: step shimming. <>/A<>/Type/Annot/Rect[124.293 780.743 175.929 771.429]>> J4WAG3+OKYhJXA$)->wd/$@@q8 JC!$9B\EQy:
JiwTQ(~)`K12iLo#iUoDoKsUWR77yY,2{TbmE&YC/QG5 z1FZl]:[J@R#e|iUqwB4Ul:h+@cF 7NibT:#]/[FUS ,,eU!?t+MPBBRxdIA$>'cpB'sB(\Z!JPWx#PB$QzpLIFb 7Qb8 Hk7F =dc,,CS5
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vP"{MYrMXjPR.J0"NGT*V#Y&MFEf@6PbAN T'|3Dx'dh ]T\HWb j\$X iDk=XfqrIZHEHy^YiL All of this will cost you the most valuable commodity of all: time. Conducting an asset criticality assessment (ACA) is the first step in maintaining the assets properly. 0000000016 00000 n %%EOF Then use three or fewer shims, normally on top of the chock, to complete the alignment. 0000064184 00000 n Practi-Shim Color Coded Plastic Shim Stock. Tel: 631-231-1515 FAX: 631-231-1625 threadcheck.com, Toll Free: 1-800-767-7633 FAX: 1-800-767-7633 Email: info@threadcheck.com, Our ISO Certificate DUNS #063262642 CAGE/NCAGE #6NGK6 Customer Satisfaction Survey. The store will not work correctly in the case when cookies are disabled.
0000001911 00000 n All of Aloma Shims greater than Figure 4: End view of step shimmed machine foot. In conclusion, best practices in shimming for machinery alignment and soft foot correction involve some care and attention to detail, the use of high quality, burr free, precut stainless steel shims and good shimming technique. Over 2,000 high-quality lifting, rigging, and suspension hardware components in inch and metric sizes for use in a broad range of applications and industries. The Distributor's #1 Choice for Fasteners! This article addresses the best maintenance strategy for assets by using ACA techniques. 0000003014 00000 n - 0.10mm material to 4 tolerance). {24Ab[iO>2tRLYa& Fun6/s2:sn_L6o0?P)I)-r] Onv'=x%]]]Kl.0.^kFvAc$-i'/WISfEw[~s}Wb9"@hr~ -kf:?9uo". %PDF-1.4 You can reject cookies by changing your browser settings. Good machine installation practices dictate that a good rough alignment between the machines should not necessitate ever having more than 100 mils worth of shims under any machine foot to achieve final alignment within tolerance. Get yours today: Power Transmission components for everything from the tool room to the production line including key stock, machine keys, tool steel, shims, spacers, and more. Use four, 4 thousandths shims to fill the tapered air gap as evenly as possible. Sandwich thinner shims in between thicker shims to protect them. Most varieties of shim are supplied 'spring hard' and are very competitively priced. This will reveal the ideal thickness of shim to use for the four steps. Blog post currently doesn't have any comments. Step shimming requires several thinner shims to be carefully inserted between the machine's foot and its support surface in such a way that they are offset from one another in step fashion. Good quality, precut stainless steel shims come in 13 thicknesses, ranging from 1 mil to 120 mils. <>/A<>/Type/Annot/Rect[287.687 780.743 340.342 771.429]>> August 1, 2022. One of the problems in achieving If you absolutely must shim your machine up by more than 150 thousandths, then go ahead and use four shims; however, if you must shim up 0.250" or more, then have your machine shop make you a chock (a chock is a shim that is 250 mils or more in thickness) and make sure this chock is carefully milled flat and coplanar on both faces. We can now supply some sizes of Copper, Bronze, Nickel and Aluminium shim. They are often used in concert with retaining rings and used to take up play between machined components. %PDF-1.4 % Rolls of metal shim vary in width from 6mm up to 1 metre, and shim lengths from 1 metre (or above if coiled). This article takes you on their journey. They are used in automotive body panels, electric motor mounts, and many other applications. Written by G.L. Fax | (724) 746-0719. When ordering, shim stock is identified by all three measurements. <>/A<>/Type/Annot/Rect[448.685 780.743 484.57 771.429]>> You may think that limiting your shimming to just three shims under a machine foot is unrealistic and unreasonable, however, it is not. Step shimming works well since the angles involved are sufficiently small enough to fall well within what is known as the swedge' angle for the coefficient of friction of the materials involved. x}rG&vi4R$ZT7EQ 46"QBTU 1o1=ugm)?,DA0 The reason for this is too many shims under a machine foot leads to increased risk of exceeding your permissible soft foot tolerance. This means as you tighten the anchor bolts and apply load to the shims, they will tend to remain in place rather than "squirt out" like watermelon seeds. If the angularity between the foot and the base is too large, consider replacing the entire machine or the base, as may be. Variable shims are divided into two categories: shortening and lengthening. Over time, this adds up to a lot of saved shims. Alternatively, choose your shim size more by the slot size than by the foot's surface area. Stainless steel shim stock comes with a thickness between from .0005 to .031.
Metals shims are more durable and offer tighter tolerances than other types of shims. We can ship Overseas but only by your shipping agent on your account. Different types of shims include arbor shims, variable shims, slotted shims, shim rings, and shim stock. 16 0 obj Purchase stainless steel shim stock from Thread Check Inc. Shortening shims are placed over the shaft under the head of the screw to shorten it, whereas the lengthening shims are placed at the base of the shaft over the threads. 0 JavaScript seems to be disabled in your browser. Shim height is also measured, however, the added length of a tab (if present) is not factored. Let's examine a few of these. As part of this best practice, it is imperative that you always maintain your shim cases fully stocked with all thicknesses, otherwise shim consumption may balloon. endstream Huyett PO Box 232 1215 E. 8th Minneapolis, KS 67467. 0000061210 00000 n Slotted shims come in a variety of shapes and can serve multiple purposes. startxref First and foremost, you should be using high quality, precut slotted stainless steel shims. The load zone (depicted in red) is defined as a cone approximately 45 degrees from the edge of the flat washer under the anchor bolt through the thickness of the machine foot. Practi-Shim materials can be purchased in sheets and/or rolls depending on thickness. Shim stock is typically used for support, leveling, and fit adjustment. If you do not check these inferior quality 0000060310 00000 n www.ludeca.com, Fluid Cleanliness is a Reliability Achievement Strategy as well as an asset life extension strategy. Practi-Shim is available in Practi-Shim #222 and Practi-Shim #333 colored to the appropriate thickness. By continuing to use our website you agree with our use of cookies in accordance with our Privacy Policy.
As long as your topmost shim supports the surface area defined by the cross-sectional cut of this cone under the foot, you are adequately supporting the load zone of the machine's foot and do not need to support any excess surface area under the foot. ____________________________________________________, Alan Luedeking is Vice President of Ludeca, Inc. in Doral, FL. Some lesser quality shims usually have raised knife edges (burrs) along their edges because they are not tumbled after being stamped out of the sheet and the dies used to stamp them out are not sharpened often enough. By continuing to use our website you agree with our use of cookies in accordance with our, By clicking "I Agree", you agree to our Terms and that you have read our, 3-Wire Thread Measuring Holder Library Sets, Pin Gage Sets - Class ZZ Pin Gage Sets - Sets and Libraries, Class Z Pin Gage Sets - Class X Pin Gage Sets - Sets and Libraries, Standard Class X Plug Gage Assemblies - Steel - Inches, Standard Class X Plug Gage Members - Steel - Inches, Reversible Plain Plug Gages - Class XX - ZZ, Taperlock Plain Plug Gages - Class XX - ZZ, Micrometer Set Masters - Model 16-1 up to 6.0"/150mm, Micrometer Set Masters - Model 16-1/2 up to 6.0"/150mm, Micrometer Set Masters - Model 112 up to 12"/300mm, Micrometer Set Masters - Model 01-1 up to 1.0"/25.0mm, Feeler Gauge Carbon Steel - Metric - Style MFB, Feeler Gauge Coils High Carbon Steel - Style FC, Feeler Gauge Coils Stainless Steel - Style FC, Feeler Gauge High Carbon Steel Blades - Style FB, Feeler Gauge Stainless Steel Blades Style FB, Feeler Gauges Carbon Steel - Metric - Style MFC, Feeler Heavy Thickness Gauges - Carbon Steel Style FB, Hardness Testers and Hardness Testing Equipment. providing our customers with the highest quality shims in the industry. Coventry <>/CropBox[0 0 612.0 792.0]/Parent 3 0 R/Annots[12 0 R 13 0 R 14 0 R 15 0 R 16 0 R 17 0 R 18 0 R 19 0 R 20 0 R 21 0 R]/Type/Page>> While they are all used to take up excess tolerances, they each provide unique value to specific applications. Shim stock is measured by its thickness, length, and width. For instance 0.075" shims may mike out at 0.078" and 0.100" shims may actually measure 0.104" thick. 2 0 obj jWD Shim rings are measured by their thickness, inner diameter, and outer diameter. Py|u IWDzukbw:o(J;PIZljub)y':FW3+I,})@enfG]4d7 M@5 *^I5[h"E`]f>FDlmS>A&UrE]#4r-;O5 This article highlights the hidden trap of performance management systems. Shim sizing is often proportional to the size of the anchor bolts. If you have questions about a certain product or application, contact our experienced and friendly Sales team today! It is a versatile material that can easily be cut to specific sizes using scissors or metal shears. This means three shims will inevitably produce about 1 mil (0.001") worth of movement every time you tighten or loosen the anchor bolt. For motor frame applications, shim size can be estimated based on the horsepower of the machine. It is a myth that you have to support the entire surface area of the machine foot with the shim. <]>> Practi-Shim materials are color-coded to provide users with an accurate, reliable recognition of thickness for ease of use. endobj It is important to select your brand of precut stainless steel shims carefully, as they vary widely in quality and tolerances. 0000000636 00000 n
117 0 obj <> endobj Always sandwich your thinner shims between thicker ones to protect them. a misalignment that could cost thousands in prematurely worn parts. When shimming, be sure to keep in mind the following best practices and risks to reduce the likelihood of equipment failure. Please phone for sizes available. Some slotted shim varieties are fitted with tabs for easier insertion. Sometimes, a machine will have feet that are significantly angled with respect to the contact surface of the base plate or sole plate supporting them. Click in the box below to select thickness: Explosion-Proof Electric Rotary Actuators. endobj 0 In fact, if you have to shim 26 thousandths, choose to use a 20 and two 3s, rather than a 25 and a 1 alone. Not to be overlooked is the lost time consequences of minor cuts caused by poor quality shims that can be very significant not just in terms of the time required to treat the injuries, but also from all the consequent paperwork required to comply with your internal safety incident reporting requirements. fH There are many things to consider when choosing a shim. endobj Huyett's Pins Catalog features over 14,000 pins and wire forms in every size and shape you can imagine in inch and metric sizes. .050 are marked with the exact thickness to within .0005" . It is extremely important that the shim be of consistent quality, completely even in its thickness throughout, accurate in its thickness, flat and burr free. FREE 1Hour Virtual Uptime Elements Introduction. This does not matter, so long as you know it! For the best experience on our site, be sure to turn on Javascript in your browser. As shims are added, more compression takes place, increasing the risk of slippage or undesired vibration of a mechanical component. Soft shims may seem like an expedient solution, but we strongly discourage their use. Aloma only buys prime material rolled to our specific tolerances 02Yl+fo.+qu CV3 4FJ While certain brands of shims are of excellent quality and evenness in their thickness throughout, like all commercial precut shims, they are only guaranteed accurate in their marked thicknesses from 0.001" to 0.025". 19 0 obj 12 0 obj Huyett Marketing Department on 05/13/2021 with 0 comments. Additionally, slot width is measured from the narrowest section of the slot and does not apply to the tapered opening. Shim stock is thin precision stock material from which custom shims can be cut. endobj application/pdfShim StockShim Stock | Spaenaur.com
You should try to never use more than three (or four at most) precut shims under one machine foot, except in exceptional circumstances. If you add to this the effect of surface contaminants present on both faces of each shim (finger oils, dust, grease, etc. Take a look at our infographic below to help make the decision easier! He has 30+ years experience in machinery shaft alignment and training and holds an ISO level I Vibration Analyst Certificate. shims for thickness accuracy, you could easily double your alignment time. This is a sign of a best quality shim. %$I&% H.0K@(`q@1)U tAXTAbp-LJ`pYC() l y(WzH9FN|/cdX`!a5\-\YY GPL Ghostscript 8.71; modified using iTextSharp 4.1.6 by 1T3XTshim stock, steel shim stock"
xb```,g@ Y8 Enter your e-mail to subscribe to our newsletter. Subscribers get exclusive content. Thus, make sure a 1" micrometer is a standard part of your alignment toolkit. Some of these points require further attention, as they have a direct impact on your best practices regime. Middlemarch Business Park Siskin Drive Most machine feet are made much larger in surface area than what is strictly necessary to support the mass of the machine and its operational load stresses. 0000061112 00000 n Place these shims between the underside of the foot and any shims already present for the alignment of the machine as evenly as possible.
With these 13 thicknesses, you can achieve any desired shim thickness, from 1 to 150 thousandths, with never more than three shims. Figure 3 shows an example of how not to shim a machine: Too many shims were used and the shims do not support the load zone of the machine's foot around the anchor bolt. The chart below shows just Keep in mind, too, that the "bent" foot may be symptomatic of a larger problem with the machine, such as internal damage if it resulted from the machine being dropped in transport or installation. <> How do you solve this problem? Industrial maintenance as a service (#imaas) transfers the digital and/or manual management of maintenance and industrial operations from machine users to machine manufacturers (OEMs), while improving it considerably. You can calculate approximately from a quarter to half a thousandths of an inch (0.00025-0.0005") movement from compression for each air space under the foot. Cut the shim stock to the length and width needed using shears or scissors. a micrometer to determine the actual thickness. Avoid using cheaper brands that only ink their shims, or worse yet, punch stamp them with the thickness marking. This way you know for sure that you are not letting the slot of the shim get caught in the threads of the anchor bolt.Always handle your shims by grasping them by the safety tab (see Figure 1); never let your fingers get under a machine's foot while the machine is being pried up or lifted! how far away from the nominal thickness many shim suppliers can be that purchase gauge It goes without saying that if the time and resources are readily available, you should consider re-machining the undersides of the feet or the contact surfaces of the base plate, or making a tapered "dutchman" shim for the foot. ), the movement can be greater.
<>/A<>/Type/Annot/Rect[134.797 20.875 204.444 13.564]>> Copyright 2022 G.L. AISI tolerance material. Three Things You Need to Know About Capital Project Prioritization. However, this may not be practical or economical to do. For the best experience on our site, be sure to turn on Javascript in your browser. Connect with leading maintenance professionals, reliability leaders and asset managers from the world's best-run companies who are driving digital reinvention. Laser Cutting Services, Water Jet Cutting Services, Contract Manufacturing, and CNC Machining provided.">.
Let's see why: Precut: You don't have to hand cut them, saving you much time.Burr free: This means greater precision in the thickness.Accurate in their thickness (up to 0.025").Even thickness throughout.Flat and undistorted.Convenient: Steel carrying cases make transporting shims easy and help to keep them neat and organized.Versatile: More thicknesses and sizes to choose from means you will use fewer shims to achieve the desired thickness, thereby saving both time and money in materials.Safe: The safety tab allows for safe manipulation of each shim.