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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Standard Keysteel stock materials.

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 paet problems due to the loading on the side faces of the key aprt keyway for any given shaft size.

This standard makes reference to the following British Lart 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. Suggestions for improvements will be recorded and in due course brought to the notice of the committees charged with the revision of the standards to which they refer.

Woodruff key – series 2

In cases such a stepped shafts when larger diameters are required, for pary 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. Details and advice can be obtained from the Copyright Manager. Parallel and Taper Keys”. Users of British Standards are responsible for their correct application. In addition to the three classes of fit agreed byISO as mentioned above, the United Kingdom has found it necessary to introduce an additional class, an interference fit.


Important Note When Ordering Keysteel. Parallel and taper keys BS Buying standards Orders for all BSI, international and foreign standards publications should be addressed to Customer Services. Carbon and carbon manganese steels, including free cutting steels. Part 1BS NOTE 2The assembly of a taper key requires that the taper of the key be fitted to the keyway. BSISO limits and fits. Search all products bbs4235. Click to learn more.

This will be indicated in the amendment table on theinside front cover. You may find similar items within these categories by selecting from the choices below:.

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In this class of fit, hand fitting will be necessary. Please copy and paste this embed script to where you want to embed Parr Script. Please download Chrome or Firefox or view our browser tips. This standard has been updated see copyright date and may have had amendments incorporated. This website uses cookies to manage authentication, navigation, and other functions.

BS 4235-1-1972 Specification for Metric Keys and Keyways. Parallel and Taper Keys

This is considered bs42335 to avoid the possibility of the rotation of the key which might occur in high torque, in reversing conditions, in applications where torsional vibration exists, or in precision applications. Standard Number BS bd4235 The values in bold type are those which correspond most nearly with the preferred lengths given inTables 9 and 10 of BS Please fill this form, we will try to respond as soon as possible.


Turned And Machined Parts or quote. The dimensions and tolerances of interference fit keys shall be given in Table pzrt and Table About Us Location Services Contact.

Your basket is empty. The dimensions and tolerances above and in Table 6 have been determined so that this is possible in all cases.

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

For a worn keyway shaft use our well stocked Interference fit range. BSWrought steels in the form of blooms, billets, bars and forgings. For a quote View cart order. In this class, fitting will be required under maximum material conditions, and if it is required to obtain these conditions some selection of components may be necessary.