Din 6885 a parallel keys high type dimensions, specifications, standard, weights, equivalent and download pdf. The shaft tolerance k6 is also a plus tolerance, but with deviation limit slight narrower than the h7. Metric key keyway dimensions per isor773 js9 width tolerance. Ktr has developed a new standard material for its spiders. Standard inch series bores and keywaysdata sheet ds103 rev. However, if the hub thickness remaining over the keyway is less than the diameter of a standard set screw it will be placed at 90. Specifying and dimensioning metric keys and keyways varies significantly from the english. There many standards that cover the topics of metric bore tolerances, fits and keyway.
Are there any standards for metric bores and or keyways. The standard keyway is g but alternate a, b or c keys are available upon request. Therefore, to ensure appropriate fit, the width and height dimensions of standard key and keyways must be held to recommended tolerances. When one set screw is ordered, it is normally over the keyway.
Keyways js9 and p9 shafts k6, j6, h6, m6, s6, g6, n6 and p6. All standards are subject to revision, and parties to agreements based on this international standard are encouraged to investigate the possibility of applying the most recent edition of the standard listed below. Engineering hardware design data iso hardware specifications table. Scope covers the dimensions and tolerances for parallel keys and keyways. Standard inch series bores and keyways data sheet ds103. It is fixed fits with small interferences or negligible clearances. Standard keyway and set screw dimensions inches shaft. If your measuring from the od of the shaft there is a formula in machinery handbook to add that dimension to the half size of the key but dont depend on it for the right depth to cut to. Standardization iso tolerance zones, allowances, fit. The usage of these tolerances is advised for economic reasons. In the english system, it is standard practice to dimension keyways.
Standard inch series bores and keyways data sheet ds103 rev. Mpta b1c2010 bore and keyway tolerances for vbelted sheaves. Standard description bs4235 p woodruff keys and keyways same as iso 391 bs46p1 specifications, keys and keyways obsolete. Page 1124 technical information handwheels cranked handles control levers positioning of the keyway. In the case of key blank selection, we recommend you continue to check a selected key. Enter your desired preferred tolerance grade and the nomial size. Keyway dimensions and tolerances listed in table 5 were specified according to isor773 normal fit. This pa note will explain the uses of keys and keyways in pulleys and bushings, and present current industry standards for key and keyway component sizing. Figure 1 keyway and key size dimension reference specifying. Mptab1c2010 bore and keyway tolerances for vbelted sheaves mechanical power transmission association 6724 lone oak blvd. Shallow keyway depths must exceed 23 of the full keyway depth of the square keys shown above.
Keys are not furnished except on order and at additional cost. Most standards fail to discuss the important issue of key material, as well as their shape and installation. The transmittable torques of the clamping connection consider the max. The following engineering calculator will show the plus and minus tolerance for the specific iso 286 shaft tolerance data. Armstrong metalcrafts does prototyping and produces devices that stimulate the imagination, spark a conversation, and enlighten the soul. This fit for accurate location where greater interference permissible.
Tem, it is the standard practice to specify the key size. Referencing figure 1, the keyway dimension is w x t. Mechanical system design keys and keyways types of keys keys and keyways are given in ansi b17. Keyway and key size dimensions common dimension specification english standard keyway and key sizes shaft diameter in. Falk hub keyway tolerances and standard fillet radii. If a feather keyway is intended to be used in the hub, it should correspond to the tolerance iso js9 ktr. Customary inch clearancefit and interferencefit bore and keyway standards bore and keyway dimensions comply with ansiagma 9002b04 standard. Key and their corresponding keyways shape and dimensions of parallel key and keyway shape and dimensions of taper key, headed taper key and keyway excerpt from jis b 1.
Hole chart and shaft chart for iso tolerance and limit and fit. Fit tolerances and applications mec engineering spreadsheets. The aim is to help the designer to choose the appropriate and preferred fit tacking into account the standard uses for mechanical applications. Standard contains tables of recommended key sizes versus. Straightsided splines for cylindrical shafts with internal centering dimensions, tolerances and verification. Iso and ansi standards the following tables report the preferred metric fits and tolerances for hole and shaft basis systems given by the iso 2861 2010 and ansi b4. When measuring the keyway depth you measure from the side of the keyway on the shaft to the bottom of the keyway. Links to pdf outline drawings, dxf drawings and 3d cad data sites. Members of iec and is0 maintain registers of currently valid international standards. Keyway width w agma 9002a86 inch bore and ansi b17.
Shaft and hub keyway and key sizes micromachineshop. Standard keyway sizes pdf this pa note will explain the uses of keys and keyways in pulleys and bushings, and present current industry standards for key and keyway. Permissible load on feather key of the coupling hub. Shaft and hub keyway and key sizes keys connecting shafts to pulley hubs are commonly used to achieve reliable noslip power transmission in belt drive systems. The proportions of crosssections of keys vary with the shaft size, and. Equals shaft bore keyway keyway diameter nominal shaft bore keyway keyway. Technical data tolerances of regularly used hole fits excerpts from jis b 0401. Din 6885 a dimensions, specifications, standard, weights.
The motor shaft tolerances are j6 and k6, so the motor shaft fit. Is intended for the general application to cylindrical shafts and shafts ends, and gives the relationship which should be observed between the diameter of shaft and the section of key. Helical keyway dimensions september 2016 seminar handbook appendix. Standardization iso tolerance zones, allowances, fit tolerances inside dimensions holes iso tolerance zones, allowances, fit tolerances. There many standards that cover the topics of metric bore tolerances, fits and keyway sizes. Hole and shaft basis limits and fits,hole limits and fits. Introduction the general practice in industry is to supply coupling hubs without fillet radii in the keyway corners to permit the use of standard commercial keys instead of keys with chamfered edges. The hub keyway is dimensioned by its width and depth on the shaft keyway sides. The redel 1p plug still utilizes the highly reliable machined gold plated contacts.