Loaddeflection curves of straight, regressive or progressive character according to design requirements. Handbook for disc springs industrial and bearing supplies. Disc springs are available with or without contact flats. Csc is north americas leading catalog source of stock and custom springs for mro and oem applications for over 90 years. Our stock range includes disc springs to din 2093 and din 6796 specifications, bearing preload disc springs, medium and light duty serrated safety.
All schnorr products are available in materials and finishes to meet varying needs in terms of corrosion resistance, heat resistance andor antimagnetism. The guide can be on the outside d e or the inside d i of the springs, but inside guidance on a bolt or shaft is preferred to the outside guidance in a sleeve, because it offers design and economic advantages. Home schnorr disc springs introduction disc spring features disc spring. Key bellevilles stock metric series provides reduced material thickness on disc springs with turned contact surfaces. In order to meet customer requirements, schnorr has con stant ly. Disc springs for preloading bearings are often called bearing springs or k disc springs. Schnorr disc springs support a lot of disc springs dynamic processes in a skillful, safe and efficient way often under extreme force and load conditions. The objective was to reproduce the identical loaddeflection characteristics and the maximum load capacity of the steel disc spring while achieving significant mass savings. Looking back, the development of the schnorr handbook for disc springs, which had its origin in the 1930s, is a mirror of schnorr s endeavours. Iis disc springs offer a welldeveloped solution to many engineering problems. A belleville washer, also known as a coneddisc spring, conical spring washer, disc spring, belleville spring or cupped spring washer, is a conical shell which can be loaded along its axis. Schnorr is a manufacturer of conical spring washers. Schnorr, key bellevilles, mcmastercarr and choose from the.
Handbook for disc springs, which had its origin in the 1930s, is a mirror of schnorrs endeavours. They are known as belleville springs, disc springs, spring washers, safety washers, or load washers. Often disc springs are considered for use as safety washers for bolted connections, for preloading or. The disc springs are prestressed scragged and the machining and radiusing of the inside and outside diameters remove stress raisers, which could otherwise reduce disc spring fatigue life. The main characteristic of these elements is the capacity for offering very high forces in reduced spaces, improving what we would obtain with another. The 1942 issue, 60 years ago, already contained characteristic diagrams for 21 standard springs. These springs are manufactured according to the specifications of din 2093 standard, which establishes all the characteristics these pieces have to meet. Packing information and stock read more read more on our homepage general information about disc springs.
Often disc springs are considered for use as safety washers for bolted connections, for preloading or preventing loosening of the connection. To minimise the possibility of bearing point misalignment when disc springs are stacked in series i. Schnorr, key bellevilles, mcmastercarr and choose from the available options using the published values for load at maximum deflection. The most common approach to designing with disk springs is to use a manufacturers catalog e. Hardware for industrial automation motion solutions. What makes disc springs unique is that based on the standardized calculations of din en 16984 formerly din 2092, the deflection for a given load is predictable and the minimum life cycle can be determined. Schnorr has now manufactured disc springs for over 50 years. Disc springs are manufactured to din 2093 and designed as.
Make a request and we will contact the manufacturer. Download all of schnorrs handbooks, certifications and whitepapers here. The feasibility of replacing steel with composite materials in disc springs or belleville washers is investigated. This standard has been prepared by the springs standards committee af at din, the german institute for standardization e. Infinitely variable spring characteristics can be achieved by the arrangement of disc springs into stacked columns. The catalog reflects 800 of our 10,000 finished belleville disc springs in stock. Schnorr disc springs disc spring standard material 3d cad models. Custom special springs, service parts, spec stock springs, spec stock washers, schnorr disc springs, stripping spring units, unikix spring pins, century springs, lee springs. The importance of disc springs on machines and control systems is very. Springs with a thickness of 6mm and over are machined all over and. Disc springs, in excess of 6mm thickness, have larger diametral clearances. Without proper hardware, however, even the best design will not perform properly. Din 2093 springs are conical washers with elastic properties. Special springs, wave springs, ball bearing disc springs and conical spring washers are also part of our portfolio.
Disc springs with contact flats and reduced thickness. Custom special springs, service parts, spec stock springs, spec stock washers, schnorr disc springs, stripping spring. Design, development and evaluation of dual belleville clutch in front end loader tractor for clutch life enhancement. Disc springs are conical washers with elastic properties. Ball bearings run smoothly and noisefree when preloaded with our schnorr k disc springs. Large online inventory with specifically sized prestressed disc springs available. Discover all cad files of the schnorr category from suppliercertified catalogs solidworks, inventor, creo, catia, solid edge, autocad, revit and many more cad software but also as. 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.
A disc spring is a conical shell which can be loaded along its axis either statically or dynamically. Prediction of loaddisplacement of th e disc spring with the friction. We open our production area for you we specialise in developing tailormade solutions in partnership with. The guide can be on the outside d e or the inside d i of the springs, but inside guidance on a bolt or shaft is preferred to. Belleville springs, disc springs, spring washers, safety washers, or load washers. The introduction of this bearing flat also moves the position of the.
Disc springs act as a compensator of thermal expansions during their working. To calculate the spring response of a stack of disc belleville springs calculation description this sheet calculates the spring response for a disc spring stack with no contact flats using equations from disc spring manufacturers handbook the equations used in this calculation give approximate values for the spring force and stress. Disc springs are conical shaped washers, designed to be loaded in the axial direction f only. A disc spring, also known as a belleville spring or spring washer is a conical shell which can be loaded along its axis either statically or dynamically. What makes disc springs unique is that based on the standardized calculations of din en 16984. Thus, adolf schnorr is considered as the pioneer of the disc spring. Established in 1908, schnorr disc spring engineering is an iso 9001 and ts 16949 certified manufacturer of conical spring washers. Precise adherence to force and dimension requirements. An optionally linear, degressive or progressive course of the load deflection curve. Highest load in the smallest space effective january 2017 the familiar din standards for disc springs din 2092calculation of disc springs and din 2093quality requirements, dimensions have been withdrawn. Disc springs for bearings areassembled with the ball bearings to act as retention devices. Disc springs act as a compensator of thermal expansions during their. Compared to standard oil springs, the disc spring has a number of advantageous properties. Your specialist for disc springs and subassemblies for.
The original schnorr disc springs today din 2093 divides three manufacturing methods depending on the relevant thickness. The large dimensional range in which disc springs are. Discover all cad files of the belleville spring washers category from suppliercertified catalogs solidworks, inventor, creo, catia, solid edge, autocad, revit and many more cad software but also as step, stl, iges, stl, dwg, dxf and more neutral cad formats. Download all of schnorr s handbooks, certifications and whitepapers here. Nov 12, 20 the most common approach to designing with disk springs is to use a manufacturers catalog e. The prefix a, b or c shows the corresponding series. To calculate the spring response of a stack of disc belleville springs calculation description this sheet calculates the spring response for a disc spring stack with no contact flats using. Pdf prediction of loaddisplacement of the disc spring.
Engineers designing applications using ball bearings are faced with two problems. This period has been marked by extraordinary technical develop ments and disc springs. Every ball bearing is designed and manufactured with small amounts of internalclearance between the balls and raceways. Schnorr has now manufactured disc springs for over 60 years. Disc springs are particularly suited for use in applications that require a high force but have limited space.
This period has been marked by extraordinary technical developments and disc springs have found many new and important applications due to their special characteristics and advantages. They also absorb ball bearings maintaining axial load recommended by the manufacturer of the bearing. As sole supplier of the original schnorr products, ingold is the most important provider of disc springs and effective locking washers on the swiss market. 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. The junker test clearly shows a superior locking performance of the original schnorr safety washers in term of number of cycles lasted. Download free cad models new 3d parts catalogs cad download tutorial videos download the mobile app desktop cad parts library vote for 3d. These springs are resistant to axial loads, proportionally to the displacement produced in the. Preload disc springs slotted type are available with an outside diameter of 9. They can be statically loaded, either continuously or intermittently, or cyclically deflected i. Disc springs always need a guide element to prevent lateral movement. This standard compiles all requirements disc springs shall meet so their function is assured. With the demand to develop and manufacture perfectly fitting solutions for various applications, schnorr, offer an extensive standard range of disc springs. By combining the springs in various ways, it is possible to obtain different forces and characteristics. Disc springs can be used as single disc or arranged in stacks.
The guide can be on the outside d e or the inside d i of the springs, but inside guidance on a bolt or shaft is preferred to the outside guidance in a sleeve, because it offers design and economic advantages the guide elements and abutments should be hardened if possible to a minimum of 60 hrc minimum case depth of 0. Your specialist for disc springs and subassemblies for vane. Disc springs to din 2093 c b a c b a c b a c b a c b a c b a desijn oufe deaefwion and swuesses based on 20 nn mm2 and. Space saving high spring forces with small deflection. 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. Disc spring engineering maximum load minimum space maximum flexibility. A disc spring stack can consist of disc springs either used in series or parallel sets.
They are commonly known as disc springs but sometimes they are called belleville washers. These springs are resistant to axial loads, proportionally to the displacement produced in the piece. Download the excel version of the disc spring calculation program. Schnorr disc springs support a lot of dy namic processes in. Disc springs are conicallyshaped, washertype components designed to be axially loaded. Disc springs are sold only in the pack sizes shown below. The disc springs are prestressed scragged and the machining. Slotted type pre loaded disc springs can be filtered by outside diameter, inner diameter, thickness, reduced thickness as well as othe specifications. Sizes according to din 2093 are shown in heavy type.
Din 20922093 disc springs are manufactured to close tolerances and are made from high quality spring steel strip and forgings. Pdf prediction of loaddisplacement of the disc spring with. Excel belleville spring calculatorradigan engineering. Its easy to get preoccupied with motors, drives, controllers, and gearing.
By combining the springs in various ways, it is possible to obtain different. Download free cad models new 3d parts catalogs cad download tutorial videos download the. This method is insufficient for many applications though because of the nonlinear nature of the loaddeflection. Aternatively you can download out disc spring pdf stock list below. Springs with a thickness of 6mm and over are machined all over and are given latheturned contact surfaces at the inner and outer support edges.
Every ball bearing is designed and manufactured with small amounts of internalclearance between. All sizes listed are in production and normally available from stock. The contact surfaces have a width of approximately de150. As the development partner of choice for notable customers, schnorr is creating with its products and services added value for their business in security, quality and economy in all applications where schnorr products can be used. Disc springs support a lot of dynamic processes in a skillful, safe and efficient way often under extreme force and load conditions. Disc spring din 2093, disc springs, manufacturers, suppliers. The large dimensional range in which disc springs are made requires very different production methods.