Shaft Shaft Key Key way Key way Key way Key way Ke Nominal Diameter Nominal Diameter Size Width ( b ) Width ( b ) Width ( b ) Width ( b ) Wi Nominal Diameter Nominal Diameter Size Nom Free Free Free Free d d Size Nom Shaft (H9) Shaft (H9) Hub (D10) Hu

Standard Metric Keys & Keyways for Metric Bores with One Key • Couplings. All Types. (Page 1 of 2). Metric Key & Keyway Dimensions Per 

BS 4235-2:1977, ISO 3912-1977: Specification for metric keys and keyways - Woodruff keys and keyways. BS 5686:1986, ISO 14-1982: Specification for straight-sided splines for cylindrical shafts: metric nominal dimensions, tolerances and gauging requirements. BS ISO 4156:2005_1: Straight cylindrical involute splines. Metric module, side fit.

3- Special case for M6 from 250mm to 315mm tolerance. 4- Some internal Grade values must be rounded down to a precision of 3 decimal metric millimeter precision. Select between millimeters and inches the unit of measure the results will be displayed. All internal calculations are done using metric millimeters.

As noted above, when selecting a keyway tolerance, there are two common selections in the metric system. The first is Js9. This is a +/- band clearance; the value of the tolerance is equally oversized or undersized. The second is a P9 tolerance. This is an

12/15 · The second is a P9 tolerance. This is an undersized clearance. The advantage of the Js9 tolerance is that the key can be inserted and the gear manipulated without much difficulty. Whereas the P9 tolerance is a press fit tolerance. Once the key is inserted into the keyway, it is not going to move. For those engineers who wish to put a square peg

In the following section you will find information on British standard keyway and bore sizes. John Kings will generally bore all wheels to a H7 tolerance unless specified by the customer. All wheels will come with grub screw fixings over keyways and at 90 degrees as standard. The standard positioning for all keyways will be in line with a tooth. []

Two PDFs with useful engineering data on keyway sizes and engineering limits and fits, just download. Provided by TNN Engineering.

Keyway Dimensions Title ANSI_B17_1-Keyway_Dimensions.xls Created Date 1/23/ 8:35:20 AM

Bore tolerances per BS 4500 H7 fit. 2. Keyway width tolerances per BS 4235 P9 fit. 3. Keyway depth and fillet radius per BS 4235. 4. All dimensions are in millimeters. 5. Actual shaft fit will vary depending on actual shaft diameters. Created Date 5/20/ 9:16:

JAPANESE INDUSTRIAL STANDARD. JIS B 1301: 1996. Keys and their corresponding keyways. Error. Page 10. In Attached Table 4, when the Nominal dimension of key