In the selection lists set the permissible deviation from the required working stroke of the spring 6. Although the disc spring has found a wider application during the last few decades, it is still an old established machine component. As a sanity check, i pulled out my schnorr catalogue, and i punched in their values. Din 2093 disc springs tolerances belleville springs. Our stock range includes disc springs to din 2093 and din 6796 specifications, bearing preload disc springs, medium and light duty serrated safety. Belleville washer, belleville washers, manufacturers. This spring disc was subsequently termed a belleville washer after the name of its originator. Disc spring catalog belleville washer catalog mubea disc. These springs are resistant to axial loads, proportionally to the displacement produced in the piece. Disc springs are conicallyshaped, washertype components designed to be. My spreadsheet and schnorr were in fairly close agreement.
Alternatively, two washers stacked in series will yield double the deflection of single. This rate is usually very high relative to a coil spring, which makes a belleville an excellent candidate where large loads must be delivered through a short movement. This may be specified by a length of travel or an additional load that will be exerted on the disc spring. Material spring steel commercial 1074 certified to astma684. Precision disc spring catalog pdf mw industries, inc. The midnineteenth century saw the conception of a conical shaped spring disc. When referring to bellville disc spring design, certain. Excel belleville spring calculatorradigan engineering. Belleville disc springs conical disc springs are ideal for applications where a large load is required in a small space. Disc spring, belleville washer disc springs, belleville.
These washers have had all set removed during the manufacturing process. The tool presents both an optimal design using a belleville spring taken from a catalogue and an optimal custom design. These pieces are manufactured according to din 6796 and they are conical washers made from steel or other alloys with elastic characteristics, which offer high resistance to axial loads. Search lee springs inventory of belleville washers by part number or by specifications. This spring rate is usually very high, allowing the spring to produce very large loads in a very small space. I set up a spreadsheet using the belleville spring equations from roarks, and some similar equations from the sae spring handbook. Information about this ratio can be found in the dimension. Designed as per americal standar in imperial units. Designing of belleville spring washer the design of. The belleville name comes from the inventor julien belleville who in dunkerque, france, in 1867 patented a spring design which.
Crown height actually should not exceed 40% of material thickness. Start by entering your desired spring measurements in the yellowhighlighted boxes and then select one of the material options from the dropdown menu in d12. Spring rate every spring configuration has a spring rate, k,defined as slope of its forcedeflection curve. We produce belleville disc springs, compliant to din. Disc spring catalog belleville washer catalog mubea. Flat load for sds springs refer to din specification for tolerances. Disc spring sftaf, din 2093 spring force ff sh o deflection sh characteristic for one spring at dynamic load, cup height should only be used for 0. It is the frusto conical shape that gives the washer its characteristic spring. Belleville washer, belleville washers, din 6796, manufacturers, suppliers, belleville washer catalog, belleville washer calculator, belleville washer design guide, belleville washer dimensions, belleville washer installation, disc spring washer, belleville washer specifications, belleville spring design, belleville washers theory, din 6796 pdf, din 6796 specification, din 6796 standard, din.
In the design of belleville washers, one of the main considerations is that of keeping the final stress at a safe and reasonable level. It is the frustoconical shape that gives the washer its characteristic spring. A single belleville washer has a specific load for a given deflection. Performance considerations a similar device is a wave washer. Belleville disc washer springs learn about lee spring.
This calculator aids in designing preferred stack arrangements for your design. It is important when designing springs to adhere to proper procedures and design considerations. Learn about spring types, their application and our fullservice custom spring design services. For loaddeflection tolerance information for other parts, please contact. Full list of tolerances for stock din 2093 disc springs. A belleville spring is a conical shaped disc that will deflect flatten at a given rate. If you have additional questions or require assistance, please contact. Disc springs are conical washers with elastic properties.
Foreword the midnineteenth century saw the conception of a conical shaped spring disc. Century spring custom disc spring manufacturing mw industries maryland precision spring location is a leader in custom, precision disc springs and belleville washers, having designed and manufactured thousands of custom disc springs for a range of unique applications. Two washers stacked in parallel will yield double the load of a single washer for the same deflection. Disc springs have become indispensable in a host of applications. So, a 2312 stack or, since addition is commutative, a 3221 stack gives a spring constant of 37 that of a single washer. Developments such as the internal combustion engine, turbine and jet systems, nuclear power, oil and gas. Select the spring size from the use the singledisk spring dimensions pulldown list. If slope is constant, it is a linear spring, and y f k where. On the dimensions group box, select the spring from the spring type pulldown list. A belleville spring is a conical shaped disc that will deflect flatten at a given spring rat e when subjected to an axial load fp figure 1. For those familiar with excel, we offer a fullyautomated workbook that includes our catalog. These springs provide high load capabilities in limited space, and through variations in stacking they can be adjusted to provide either larger deflections or. The total spring coefficient for this group of belleville washers is calculated as below. Key bellevilles offers free proprietary belleville calculator design software to help our customers in the belleville design process.
Belleville washer, belleville washers, manufacturers, suppliers. Belleville credited as the inventor of the belleville spring. For actual tolerances for a specific part, contact us. The diagram shows how the spring characteristic is influenced by the ratio between cup height and material thickness hot. Belleville spring, disc spring, and conical compression washer are all names for the same type of spring. Using the above information, select the configuration of disc springs that is. There are two belleville calculator programs currently available to key bellevilles customers. Belleville spring technical notes disc spring tech notes. The excel workbook is unprotected so its easy to add, edit, or tweak the material. Metal stampings belleville spring washers hk metalcraft. Tolerances of disc springs to din 2093 manufactured by belleville springs. Belleville washers are a unique type of compression spring. Some of the important design considerations in spring work are outlined here. In particular, numerical simulations have been carried out for a preliminary design of the belleville washer, using a commercial finite element software and a.
Either a single spring or a stack of springs can be used. The belleville spring, created in the mid 19th century, is named after julian f. Disc springs are often stacked to enhance performance characteristics. Handbook for disc springs industrial and bearing supplies.
Search lee spring s inventory of belleville washers by part number or by specifications. Design belleville springs inventor autodesk knowledge network. The story of the disc spring although the disc spring has found a wider application during the last few decades, it is still an old established machine component. A disc spring sometimes called a belleville washer after the inventor consists primarily of a convex disc supported at the outer periphery by one force and an opposing force on the center of the disc. An illustrative example is presented to highlight the benefits of using such. Bellevilles are conical in shape and are designed to be loaded in the axial direction. We have computerized design program to assist our customers or their spec. If space is extremely limited and the load is high, belleville washer springs can be considered. Belleville washers engineering data belleville washer stacking example. The calculation of the force of a disc spring is based.
The belleville name comes from the inventor julien belleville who in dunkerque, france, in 1867 patented a spring design which already contained the principle of the disc spring. A belleville washer is a type of spring shaped like a washer. A spring stack can consists ot either s ngle spnngs or spring sets, disc springs are availate with or without contact flats. They are also referred to belleville washers or spring washers. This is particularly true for small arms applications where spring space is limited and where the impact type loading is inherent in weapon function.
Pdf optimal catalogue selection and custom design of. At belleflex technologies, we provide 247 support to keep your operation running smoothly. Design belleville springs inventor autodesk knowledge. Springs calculation mitcalc mechanical, industrial and. Belleville spring washer equation and calculator engineers edge. Design and finite element analysis of h tool steel. The original inventor is not known, but more than years ago on 26. The slight or aggressive conical shape gives the washer a spring characteristic and action. Spring engineers experience and history guarantees professional commitment to all of our customers. The fatigue life of a disc spring is directly related to the magnitude of stresses developed in the part as it cycles.
Designed to maintain a high load at the bolt joints stacks. Belleville disc springs gardner spring tulsa oklahoma. The advantage of a disc spring is that it generates high force in a very short spring length and with. This paragraph serves for automatic design finding of a belleville spring of satisfactory dimensions. Belleville washers are typically used as springs where the spring action is used to apply a preload or flexible quality to a bolted joint. Jul 21, 2009 belleville disc spring stack design calculator this calculator aids in designing preferred stack arrangements for your design. These springs are illustrated below, leaf springs, which are illustrated below in a typical wheeledvehicle application, can be designed to have progressive spring rates. This spring design principle corresponds to the disc spring in use today. On the placement area, click axis and start reference to place the spring. This spring disc was subsequently termed a belleville washer after the. Belleville washers disk springs considerations prior to the spring design process.
When stacked in series, greater deflection or travel is achieved. Browse by imperial or metric units for your convenience. Nov 09, 2011 belleville disc springs are critical components. The main characteristic of these elements is the capacity for offering very high forces in reduced spaces, improving what we would obtain with another type of springs. Spring design pdf custom spring download spring engineers. Belleville washers provide a very high spring force for short movement and have a high energy storage capacity. Belleville springs has been trading in the spring industry for over 40 years and is a leading uk manufacturer and stockist of disc springs and belleville washers who export their products worldwide. Belleville disc springs share many of the same characteristics as a general washer.
By combining them in varying sequences, each size gives numerous loadcarrying possibilities. By stacking them in parallel, load bearing characteristics are enhanced. Belleville spring washers are especially suited for applications requiring high loads in small spaces. Select the appropriate standard and type of spring. Iis manufactures belleville washer in imperial as well as metric sizes. Special cases of ht the shape of the loaddeflection diagram for a belleville. Disc spring calculator tool please follow the instructions below for using mubea disc springs calculator tool. The excel workbook can be used to calculate the loaddeflection curves of any belleville spring. Solon manufactures a wide variety of springs and washer sizes that meet different tolerance requirements.
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