BS4235 PART 1 PDF

Buy BS Specification For Metric Keys And Keyways – Part 1: Parallel And Taper Keys from SAI Global. BS Specification For Metric Keys And Keyways – Part 1: Parallel And Taper Keys. Metric BS Part 1 and DIN; Imperial BS46 Part 1 Standard Keysteel stock materials. Keysteel M40 (EN8). Werkstoff C45 +C. Werkstoff.

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In this class of fit, hand fitting will be necessary.

The dimensions and tolerances above and inTable 8 have been determined so that this is possible in all cases. In addition, a fourth class of fit is provided in this British Standard to give an interference fit. The Government department and scientific and industrial organizations marked with an asterisk in the above list, together with the following, were directly represented on the committee entrusted with the preparation of this British Standard: By using our website, you agree that we can place these types of cookies on your device.

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In this class, fitting will be required under maximum bd4235 conditions, and if it is required to obtain these conditions some selection of components may be necessary. Recommended standard lengths are given in Table 9.

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The Catalogue may be consulted in many public libraries and similar institutions. Accept and continue Learn more about the cookies we use and how to change your settings. This website is best viewed with browser version of up to Microsoft Internet Explorer 8 or Firefox 3. This decision can be reversed. NOTE 2The assembly of a taper key requires that the taper of the key be fitted to the keyway.

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Contact the Parr Centre. Please fill this form, we will try to respond as soon as possible. For an account call For a worn keyway shaft use our well stocked Interference fit range.

The faster, easier way to work with standards. Find B4235 Items This product falls into the following categories. The marked difference in dimensions between the inch and metric keys and keyways was, in the early days of metrication, the subject of considerable discussion and, quite naturally, fears were expressed that there would be problems due to the loading on the side faces of the key and keyway for any given shaft size.

In cases such a stepped shafts when larger diameters are required, for example to resist bending, and when fans, gears and impellers are fitted with a smaller key than normal, an unequal disposition of key in shaft with relation to the hub results. This standard makes reference to the following British Standards: Keybar to the tolerances on width b and thickness h specified for psrt finished keys will not necessarily be commercially available.

BS – Specification for metric keys and keyways. Parallel and taper keys

Size px x x x x The dimensions bs4253 tolerances of interference fit keys shall be given in Table 10 and Table The above reports are obtainable from the Reports Unit, National Engineering Laboratory, East Kilbride, Glasgow, to which enquirers should apply direct.

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Please copy and paste this embed script to where you want to embed Embed Script. The results of these investigations have been published and they demonstrate the effects of both static and dynamic tests, and include comparisons of the stresses and deformations of the two key forms at very high loadings. View e-Privacy Directive Documents.

BS 4235-1:1972

Users of British Standards are responsible for their correct application. This website uses cookies to manage authentication, navigation, and other functions. If you need help ordering online feel free call us and we will walk you through it. Worldwide Standards We can source any standard from anywhere in the world. We are a sharing community. Standard square profile range for Keysteel.

Users of British Standards should make sure that they possess the latest amendments or editions. Standard Keysteel stock materials.

Click to learn more. This standard has been updated see copyright date and may have had amendments incorporated.