Browse by imperial or metric units for your convenience. Locking disc spring type s36396 locking disc spring type s36397 warning. The junker test clearly shows a superior locking performance of the original schnorr safety washers in term of number of cycles lasted. This corporate entity was filed approximately fortyeight years ago on wednesday, november 29, 1972 as recorded in documents filed with new york department of state. Disc springs support dynamic processes efficiently and predictably. 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. A disc spring stack can consist of disc springs either used in series or parallel sets. Schnorr disc springs support a lot of dynamic processes in a skillful, safe and efficient way often under extreme force and load conditions.
Clamina of disc guiding the disc spring 9 disc characteristics. You only need to consult chapter 1 2 if you yours elf are specifying a special spring size or wish to analyse an. Mubea disc springs have been designed and manufactured according to en 16983 previously known as din 2093 disc springs, calculation, dimensions, quality requirements. This method is insufficient for many applications though because of the nonlinear nature of the loaddeflection. Today, after more than 100 years of company history, schnorr has grown into a international leading problem solver in the field of disc springs and bolt locking systems and has a worldwide network of sales agencies.
Schnorr corporation filed as a domestic business corporation in the state of new york and is no longer active. The 1942 issue, 60 years ago, already contained characteristic diagrams for 21 standard springs. 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. Such products should only be used after a close technical examination and for simplest static applications. Disc springs, belleville washers mubea disc springs. Adolf schnorr, who had founded a mecha ni cal workshop in 1908, already began to ex pe ri ment with the disc spring in the 1920s. To minimise the possibility of bearing point misalignment when disc springs are stacked in series i. Schnorr disc springs at producto diemakers supplies. Within a spring stack the disc springs do not always move evenly figure 32. Disc springs are available with or without contact flats. Standard en 16983 din 2093 disc springs are classified into 3 groups.
The standard metric schnorr rib spring safety washerslock washers type s which is available for screws of sizes between m1. Simply stamped and ground disc springs of group 2 do not correspond to din 2093 and generally do not comply with the quality requirements for a disc spring. Schnorr corporation in woodside ny company profile. During the stamping process to form the disc spring, small grooves may form on the machined surface running in the stamping direction. Din 20922093 disc springs are manufactured to close tolerances and are made from high quality spring steel strip and forgings. Large online inventory with specifically sized prestressed disc springs available. Schnorr safety washer type s36411 schnorr safety washer type s51468 schnorr safety. Large loads can be delivered through a short movement or small space. Schnorr disk spring k notched springs schnorr free 3d. En 16983 din 2093 disc spring classification mubea. Standard materials c75s and 51crv4 page 1116 corrosionresistant materials x10 crni 188 page 1619 further versions.
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. He needed highquality springs for precision tools, with which he had made himself a name, and had come across the disc spring after a long search. 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. Disc springs are conical washers with elastic properties. As a pioneer of the disc spring application adolf schnorr founded the familyowned company in 1908. Disc springs always need a guide element to prevent lateral movement. Stainless steel disc springs can be filtered by outside diameter, inner diameter, thickness, reduced thickness as well as othe specifications.
The company has a global network of currently 39 branch offices. In spring columns with combinations of serial and parallel stacking, various characteristic curves can be realized d. Today, after more than 100 years of company history, schnorr has grown into a international leading problem solver in the field of disc springs and bolt. This naturally leads to overloading at one end of the stack with consequential reduction in fatigue life. Today, after more than 100 years of company history, schnorr has grown into a international leading problem solver in the field. Furthermore, we also manufacture from special materials, such as. Impact the springs are compressed progressively from top to. Schnorr disk springs engineering tolerance fatigue.
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. Disc springs, in excess of 6mm thickness, have larger diametral clearances. The midnineteenth century saw the conception of a conical shaped spring disc. They are commonly known as disc springs but sometimes they are called belleville washers. Search lee springs inventory of belleville washers by part number or by specifications. 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. These springs are manufactured according to the specifications of din 2093 standard, which establishes all the characteristics these pieces have to meet. Schnorr disk springs engineering tolerance fatigue material. He needed highquality springs for precision tools, with which he had made himself a name, and had come across the disc spring. The original schnorr disc springs the inner and outer. Steel grades for higher temperatures x22 crmov 121, x39 crmo 171. At dynamic load, cup height should only be used for 0.
The diagram shows how the spring characteristic is influenced by the ratio between cup height and material thickness hot. Locking disc spring type s36397 schnorr safety washer type s36411 technical brochure available on request. Disc spring standard material schnorr free 3d cad models. 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. Original schnorr disc springs effect of spring forces the importance of disc springs on machines and control systems is very often underestimated. Performance considerations a similar device is a wave washer. As a pioneer in disc spring applications, adolf schnorr founded the ownerrun family company in 1908. The following maximum deviations are laid down in din 2093. Metric schnorr rib spring safety washerslock washers are available in two versions. They are valid for all schnorr disc springs as per the din and schnorr works standards. The catalog reflects 800 of our 10,000 finished belleville disc springs in stock. 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.
At ratios over 2, the disc springs may invert when taken towards the flat position. In general schnorr also apply these tolerances to special sizes, however, if they deviate greatly from the din springs, wider tolerances must be specified. Precision disc spring catalog pdf mw industries, inc. Home schnorr disc springs basic calculation calculation for a single spring calculation for a single spring the calculations of almen and laszlo assume that a spring flank rotates around a centre of rotation during deflection, placed in. This method is insufficient for many applications though because of the nonlinear nature of the load. Belleville washers engineering data belleville washer stacking example. Din 2093 springs are conical washers with elastic properties. The main feature of din 2093 disc springs is the capacity to generate high spring load compared to traditional helical springs, in small enclosures and with short displacements. In spring columns with springs stacked in parallel, the forces add up at the same deflection c.
This is also the reason way, with dynamic loads, the first breaks occur at the end of the spring stack in most cases. Contact our sales representatives or design engineers for assistance on your speci. Only when stacking spring layers in parallel does a reduced height have to be taken into consideration. The introduction of this bearing flat also moves the position of the. 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. Schnorr has manufactured disc springs and continually opened up new applications with its many domestic and foreign customers. Disc springs can be used as single disc or arranged in stacks. Schnorr disc springs k schnorr disk spring k notched springs 3d cad models. The most common approach to designing with disk springs is to use a manufacturers catalog e. Today, schnorr has grown into an internationally leading problem solver in the field of disc springs and screw locking devices. Original schnorr disc springs the following dimension tables describe. Excel belleville spring calculatorradigan engineering. Disc springs are used singly, or in stacks, to achieve a desired load and travel.
Aternatively you can download our disc spring pdf stock list below. Original schnorr disc springs schnorr disc springs disc spring dimension tables standard materials spring steel material grade 1. If disc springs of different thickness are stacked in a suitable way, then even progressive characteristic curves can be realized. 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. Schnorr disk spring k notched springs schnorr free. Disc spring din 2093, disc springs, manufacturers, suppliers. Schnorr disc springs disc spring standard material 3d cad models. Adolf schnorr, who had founded a mechanical workshop in 1908, already began to experiment with the disc spring in the 1920s. This spring disc was subsequently termed a belleville washer after the. 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. Nov 12, 20 the most common approach to designing with disk springs is to use a manufacturers catalog e. These springs are resistant to axial loads, proportionally to the displacement produced in the piece. Complete engineering and manufacturing support for custom belleville disc springs from concept to finished product.
The advantage of a disc spring is that it generates high force in a very short spring length and with. 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. Disc springs are manufactured to din 2093 and designed as per din 2092. Adolf schnorr, who had founded a mecha n ci aw l orkshopni 1 908a, rl eadyb egant o ex pe ri ment with the disc spring in the 1920s. F c is the design force of the disc spring in the flattened position. Information about this ratio can be found in the dimension.
96 1286 42 989 228 380 882 793 1124 855 624 58 79 73 548 345 1040 860 430 267 406 1301 93 1504 971 1323 807 143 1080 1222 1454 972 751 1372 1085 599 617