The load peak frequency factor evaluates the influence of the load peaks on the maximum surface pressure. Tabulated depth control values for shaft keyseats and hub keyways are given in ansi b17. The dimension from the top of the keyway to the opposite bore side, tdim, is calculated from refer to ansiagma 9002b04 the following. Apr 14, 2018 14 photos of the metric keyway depth chart. Minimum length of the key equals 1 12 times the shaft diameter. Nov, 2015 l keyway effective length m h keyway depth m for a solid steel shaft of 18mm diameter, with keyway 6 wide x 32 long by 3. Depth values for shaft keyseats hub keyways amesweb. Calculation of depth of milling cut for a key seat 4298. Metric keyways are dimensioned by width and depth as measured from the radius of the shaft to the center of the keyway. Also calculated are the overall measurements for shaft and bore, as well as the chord height. As with all functions of the machinists calculator, linear values can be converted between inch and millimeters, including the x,y coordinates in the answer. Metric key keyway dimensions per isor773 js9 width tolerance table chart. For a key to function, the shaft and the rotating component must have a keyway and.
Keyway height calculator from the bottom of bore to top of keyway. Shallow keyway depths must exceed 23 of the full keyway depth of the square keys shown above. Thread adhesive may be required to ensure that vibration doesn. The keyway dimensions are also different from the english system. All dimensions displayed as inches are converted from the metric values. Is there an industry standard, generally accepted practice or engineering formula for determining the size width depth of a keyway and key on a given sized steel shaft.
Designed to be inserted from the end of the shaft after the hub. This small, portable milling machine clamps on the end of the shaft or anywhere along it and, using a rotary tool, cuts new keyways, or recuts worn keyways insitu. Shaft keyway depth calculator for those of us that machine the bigger key cuts in shafting thats not in the mhb, heres a neat calculator. Machinerys handbook calls this the m dimension, the amount you need to mill off the dia. Torque applied deformation and stress of a shaft with keyway equations and calculator. Looking for grainger approved engineering tech sheet, keyway formulas 5dfe9.
The prole keyway is cut by an endmile while the sledrunner keyway is cut by an ordinary milling cutter. In order to promote public education and public safety, equal justice for all, a better informed citizenry, the rule of law, world trade and world peace, this legal document is hereby made available on a noncommercial basis, as it is the right of all humans to know and speak the laws that govern them. Standard metric keys keyways for metric bores with one key. Just enter the size of the key and shaft, then click calculate. The formula for determining the proper key length is. Grainger approved engineering tech sheet, keyway formulas. The distance from the bottom of the shaft keyseat to the opposite side of the shaft is specified by dimension s.
Editcnc calculator keyway and keyseat calculations. Pdf investigation of stress concentration factor for keyway pdf. Keyway depth calculator keyway depth from bottom of bore to top of keyway. Machinists calculator must be installed on individual computers. However, designers tend to forget that other important factors exist. Depth of the keyway for rectangular section keys flat keys is 12 the thickness of the key, table 85 in appendix. Machinists calculator keyway and keyseat calculations. My concern is when i compare this motor with a motor which we have delivered in the past, the shaft diameter was 210mm with the same key lenghth, shaft material and torque 3000kw rpm. 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. Standard inch series bores and keywaysdata sheet ds103 rev. Depth of the keyway for rectangular section keys flat keys is 12 the thickness of the key, table 85 in appendix a lists common sizes for squareend machine keys.
Shaft external tolerances are lower case and hole internal deviation. Hydratights keyway cutter is a simple but powerful machine that can easily cut accurate keyways with a finish comparable to ground surfaces. Hey, im new to this foruma and i have a question about key design. 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. Equals shaft bore keyway keyway diameter nominal shaft bore keyway keyway. A key is a machine element used to connect a rotating element to a shaft. Keyway depth calculator for inch size keyways based on ansi b17. Depth of the keyway for square section keys is 12 the width of the key. I have a rotating shaft and hub transmitting 2000ftlb of torque.
Calculation of depth of milling cut for a key seat 4298 mathtab. The hub is slightly larger than the shaft and key to allow it to slide over the shaft during assembly. Related posts of metric keyway depth chart template business. Not all combination of sizedeviationgrade return valid results. Determines if the tolerance is applied to a hole internal or shaft external. Machining of square shafts with rounded ends with or without keyways other machining available upon request per prints provided drill, tap, threading for keyway mm dimensions see the table at the bottom of this page. The pictures shows the stress pattern in a shaft with a keyway under pure torque. Parallel key and keyway sizes and tolerances miki pulley. Keyway depth normally 12 of width return to broaching. Standard inch series bores and keyways data sheet ds103 rev. Find all the bearings, bearing housings, vbelts, oil seals, collars you need and more including the 1 x 36 keyed shaft at. Keyway width w din 7154, h7 metric bore and din 6885, js9 square keyway tolerances. T torsional twisting moment on shaft in inch pounds.
As part of your prealignment stepschecks, the keyways of the driver and driven machine shafts should be set 180 degrees apart from each other. Keys and keyseats 00 00 so 2355 00 88 00 co co o x 00 co x o x x. We hope you find machinists calculator suits your needs, but if not, you can easily uninstall the trial. Referencing figure 1, the keyway dimension is w x t. Metric standard parallel keyway and key sizes shaft diameter mm keyway mm key mm from to width w depth h width w depth t 6 8 2 1. Shaft with keyway torque applied deformation and stress equations and calculator. Shaft with keyway torque applied deformation and stress.
The download file is guaranteed by use of a code signing certificate issued by symantecverisign not to have been altered or corrupted, and that the developer is a trusted company. I allways have a calculator with me when im drawing or machining so thats all i really need. So highest torques, lowest material specifications given your key and shaft geometry, fos1. Shaft keys revisited dimensions of shaft keys, standardized many years ago, are commonly considered to be the main concern in applying these devices. A list of standard keyway and corresponding key sizes for english shafts are listed below in table 1. Keyway depth calculator input kramer power equipment. Shaft key calculation mechanical engineering general. Easily calculate the values required to cut keyseats and keyways. Once installed, the key prevents rotation between the two parts to enable torque transmission. A wide variety of hollow shaft with keyway options are available to you, such as black oxide, nickel. Keys and keyways 51 introduction university of babylon.
Beam deflection and stress equation and calculators. Note that i also found a material specification for this s355j2g3 shaft which listed a proof strength of 285 mpa. This compact modular design allows quick setup and ease of handling in confined work areas. The calculations are based on the british standard metric iso limits and fits. Also calculates overall shaft and bore values, and chord depth. For this use in calculation and design, it was thought best to coin a term to permit comparison between a shaft with keyway. Calculate fits and tolerances for shafts and holes here. Shaft keyway depth calculator page 2 practical machinist. Keyway depth calculator input kramer power equipment co. View profile view forum posts diamond join date nov 2005. Determining keyway size for a shaft cr4 discussion thread. 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.
How do i calculate what size key i need in order to have the key not shear. The diagram shows the importance of having a big and smooth radius at the bottom of the keyway, this is. Therefore, to ensure appropriate fit, the width and height dimensions of standard key and keyways must be held to recommended tolerances. Shaft and hub keyway and key sizes micromachineshop.
Customary inch clearancefit and interferencefit bore. Unless otherwise specified, the shaft keyway is assumed to be standard. The key and key seat cross section are iso standardized. Motor shaft keyway is 5 long, the coupling hub keyway is 3 long. Mar 26, 2019 the different keyway depths in shaft and hub as well as the chamfer of the parallel key are taken into consideration for the calculation. The hub keyway is dimensioned by its width and depth on the shaft keyway sides. Oct 16, 20 balancing your couplings is not essential to a great precision shaft alignment, though it is an essential part of a job well done. In this case, the torque that can be transmitted when a key is added to the shaft is approximately 12 percent lower than the torque that can. Hub keyway depth is onehalf the nominal height of the key and measured from the side corner. Standard inch series bores and keyways data sheet ds103.
We do not use our trial to gain access to your computer in any way. The following tables show standard dimensions for keys and their grooves. Shaft bore keyway keyway diameter nominal shaft bore keyway keyway diameter diameter width x depth radius over to including diameter minus tolerance width x depth radius 12. Keyway cutter technical data uk english pdf document, 478. The resulting friction is used to provide resistance to axial motion.
You can also choose from gear, eccentric, and spline hollow shaft with keyway there are 105 suppliers who sells hollow shaft with keyway on, mainly located in asia. For this use in calculation and design, it was thought best to. Calculations can be made for inch and metric keyways, and values can be. Its been a while since i have done any of this kind of design, any help is appreciated. The different keyway depths in shaft and hub as well as the chamfer of the parallel key are taken into consideration for the calculation. Transmitting torque with keyed shafts linear motion tips. The xyz keyway cutter is capable of cutting keyways in shafts from 424 101. Home hallite transeals transmission products keyway chart. I used this in the calculation since it would be reasonable to expect your material to have similar behavior performances. Falk hub keyway tolerances and standard fillet radii.