All internal. - Calculate the dimension for measurement of the keyseats. The extra 4 inches × 3/8″ high key stock. In this calculation a shaft of length L, diameter D, with keyway dimensions K × H is considered. 5 of the ASME Y14. Structural Analysis of Beams and Shafts. Standard Bore Tolerances 1" and Less + . 025 = 39. Check Details. The premise is; if you surrender 10% of the total product tolerance to the gages, you will pass 90% of your product tolerance 100% of the time, if the Go fits and the No-Go does not. It is noted that this is equivalent to a stress concentration factor of 1. Shape and dimensions of parallel key and keyway Shape and dimensions of taper key, headed taper key and keyway Excerpt from JIS B 1301:1996 S1 = b's tolerance× 1 2 S2 = h's tolerance× 1 2 h2 = h, f = h, e ≒ b S1 = b's tolerance× 1 2 S2 = h's tolerance× 1 2 Key body Cross section of keyway Key body As noted above, when selecting a keyway tolerance, there are two common selections in the metric system. Each tolerance has a maximum and minimum. A list of standard keyway and corresponding key sizes for English shafts are listed below in Table 1. In a metric calculation like that shown before, the ISO tolerance recommendations are appropriate for diameters and tooth thickness versus slot width. pdfKeyway dimensions. An example for a straight-sided spline is shown (Fig. 8mm 2. STANDARD KEYWAY BROACHES revtool. Even at the maximum shaft and minimum hole. Keyway tolerance chartWoodruff key cutter size chart Keyway chartGates belts, hoses, and applications: standard & non-standard shaft key. The lower Limit for the shaft = Upper limit for the shaft – Tolerance For shaft. Lock nuts with integral locking . According to nominal size and fit type selection among running and sliding [RC], locational clearance [LC], locational transition [LT], locational interference [LN], force and shrink [FN] fits, size. 4375-0. DIN 6885-3 :- Key, Hub Keyway, Shaft Keyway Details and Dimensions DIN 6885/3 :- Definition Drive Type Fastenings without Taper Action; Parallel Keys, Shallow Pattern, Dimensions and ApplicationThe parallel tolerance is tighter than symmetry. R o c k w e l l B 8 5. Steel key stock is an economical choice with good strength. The hub keyway is dimensioned by its width and depth on the shaft – keyway sides. Woodruff keys are inserted into a key seat created by a woodruff key cutter or arbor cutter. 5020 2. Detailed width tolerance information is best drawn from the manufacturer. The hole basis fits have four preferred hole tolerances (H11, H9, H8, and H7); the shaft basis fits have four preferred shaft tolerances (h11, h9, h7, and h6) as shown in Table 6-1. Key & Keyway Dimensions - Millimeters. 0 +0. tolerances for inch bores, keys and keyways for flexible couplings. Bonus Tolerance Example: Let’s look at a bore of 1/4″ +/- 0. Don’t miss this article on the basics of “Geometric. Pressure Vessel Pumps Applications Re-Bar Shapes Apps Section Properties Apps Strength of Materials Spring Design Apps Structural Shapes Threads & Torque Calcs Thermodynamics Physics Vibration Engineering Videos Design Manufacture Volume of Solids Calculators Welding. (Ver. 00 mm Upper Limit = 25. Face Width - Face width is limited in its maximum dimension to allow proper. 7500 3. Nominal Shaft Diam. For shafts 10 to 22mm diameter the keyway key depth tolerance is 0 1mm and it is 0 2mm for shafts 22 to light fit JS9 Based on ISO keyway tolerances Standard Metric Keys amp Keyways for MetricTolerances / fits ISO 286-2 tolerances for holes ISO 286-2 tolerances for shafts Shaft fits | calc Probabilistic tolerance intervals Shaft fit tolerances Bearing fit tolerances . Keyway Tolerances Inch and mm xls is worth reading The file contains 4 page s and is free to view download or print. 1 0 : 5×5 Keyway Connection. PREFERRED FITS AND TOLERANCES CHARTS (ISO & ANSI METRIC STANDARDS) Preferred fits and tolerance table for hole and shaft basis systems which are given in ISO 286-1 (2010) and ANSI B4. Fit Charts. Fits and tolerance calculator for shaft and hole tolerance calculation according to ISO 286-1 and ANSI B4. Wall Thickness and Ejector Marks Tolerance Calculator Grade E. 3 12 8 45 50 14 3. 005 ; As you can imagine, this tolerance stack-up would be a. 19-1997. Lock nuts requiring a keyway . This is a +/- band clearance; the value of the tolerance is equally oversized or undersized. Storage . Keyway dimensions metric key js9 iso tolerance per hub radius width depth diameter nominal thru hasn answered question yet beenKeyway keyways clubrunner bores wxh 3/16" x 3/32 keyway keyed shaft 7/8" x 6" metals & alloys businessKeyway bore modification service inch additional ka standard diameter. ago. But it creates a tolerance zone of two parallel planes where all points of the feature must lie. 250 +0. 0 for severe vibrations/shocks. Calculate the length of broach for roughing and finishing operation for machining a slot 10 mm in depth and 20 mm in. Contact. While a designer is free to specify any keyway they wish, straying from the standard option is likely to increase the cost, time, and complexity of the part. By exploring the title, publisher, or authors of guide you in in fact want, you can explore them. Underconstrained + Maximum Material. A rectangular sunk key is shown in Fig. 08 mm Bilateral Limits occur when the maximum limit is above and the minimum limit is below. Keyway chart pdfShaft and hub keyway dimensions Keyway keyways bores wxh chainsKeyway key parallel jis sizes tolerances 1301 mm 1996 pulley excerpt unit tech. 246=0. TOLERANCES ISO metaux detail com. 20 , Ø25 0 0 -0. js9 width Metric keyway sizes. Scope-Lays down the gauging practice for inspection of plain workpieces with dimensions fess than 500 mm. In this calculation a shaft of length L diameter D with keyway dimensions K H is considered. Once the key is inserted into the keyway, it is not going to move. CAGE Code 06324 Printed in U. Class 1 is a clearance or metal-to-metal side fit obtained by using bar stock keys and keyseat tolerances. Based on standard tolerances and limit deviations in accordance with ISO 286. Shaft keyed keyway aluminum diameter grainger length motor shafts close. Standard Metric Keys Keyways for Metric Bores with One Key. 975-0. 000 +/- . SS-EN ISO 6413:2018 Technical product documentation - Representation of splines and serrations (ISO 6413:2018) SS-EN ISO 6414:2020 Technical product documentation. Metalcrafts. Cantilever Beam Calculation. Keyway width P9 tight fit (standard design) JS9 or N9 loose fit (requires written agreement) see also. 314 . The smaller of the two computed stresses is to be used. Based on the use of two types of stock, two classes of fit are given. STANDARD KEYWAYS AND SETSCREWS STANDARD BORE TOLERANCES . - Show the tolerances based on ANSI/ASME B17. No easy answers though, there are too many factors. The Position tolerance is the GD&T symbol and tolerance of location. lilbat76 • 4 hr. 2-1967 (R1998) - Engineers Edge. Parallel Metric Keys and Keyway Dimensions - Roy Mech. Older →. Undersized. 4. n When referencing the Lovejoy UPC number in this table, include 685144 as a prefix to the number shown. 360 Minimum 2. 000 1 1/16” to 2” +. Alex Holton walks through how to run a tolerance analysis and stack-up. See dimensions W and h in Figure 1. pdf. Rectangular keys. They conform to ANSI B17. Standard Tolerance Limits and Fits (ANSI B4. ; Spur Gear Train Backlash Review Spur gear backlash is the amount of tooth space between. UDC 621’753’2 : 531’718’1 Fifth Rqrint NOVEMBER 1996 ( Incorporating Amendments No. 8 4 4 13 17 5 2. Tolerances . keyways - FrankTools - Free - Mobile App for AndroidKeyway Tolerance Chart PDF documents docucu archive com Standard Bore and Keyway Tolerances Inch and mm May 9th, 2018 - Square Keyway Tolerances 3 8 3750 7 16 4375 Page 1 of 6 PFEIFER INDUSTRIES LLC 2180 Corporate. But, a manufacturing line-down situation could also result if a tolerance stack-up. Close Running fit for running on accurate machines and for. Free Download Here pdfsdocuments2 com Metric Key Keyway Dimensions Engineers Edge. 018: 4: 0 -0. ex: H11. Metric key seats are much easier to calculate than their inch counter parts. Shaft Calculator. * These Width A values were set with the maximum keyseat (shaft) width as that figure which will receive a key with the greatest amount of looseness consistent with assuring the key's sticking in the keyseat (shaft). Enter the precision grades of the two gears as well as absence or existence of tooth form correction (s). Since not all parts are made of flat surfaces, end mills will invariably need to move in a non-linear path. Engineering. Press Fit Engineering and Design Calculator. The schematic representation of the fit is also drawn by tolerance calculator. There is the same clearance on the other machine elements. 1N, 2N, 3N and 4N are designed to be a non-driven support end. Solid Rigid Shaft to Shaft Couplings Design Equations and Calculator. 7500 3. 18. This chapter includes requirements for soils investigation and site preparation for receiving a foundation, including the load-bearing. A. 000/-0. Metric keyways are dimensioned by width and depth as measured from the radius of the shaft to the center of the keyway. 5 H11/g8” to specify tolerances. Mechanical Tolerances Specs Plastics Synthetics Power Transmission Tech. , New Berlin, WI 53151-7953 March 2015 (PDF. - Show the tolerances based on ANSI/ASME B17. S. Calculator for designing shaft keys Shaft diameter d mm Shaft torque T Nm Key length L mm key width b mm key height h mm keyway depth shaft t 1 mm keyway depth hub t 2 mm shear force F s = T/ (d/2) kN shear stress key τ = F s / (L搓) MPa bearing pressure p = F s / (h/2 微) MPa Nominal torsional stress τ = T/ ( π/16搞 k3 ), d k =d-t 1 MPa Keyway size; b h c or r Standard size of b1 and b2 b1Tolerance （h9） b2 tolerance （E9） r1 and r2 t1 t2; Standard size Tolerance（h8） Standard size Tolerance(h10) Standard size Tolerance Standard size Tolerance; 4×4: 10 or more and 13 or below: 4: 0 -0. 2. Keyway Calculator. The design requires the holes to be located relative to the keyway, but the keyway does not need to be exactly centered on the plate itself. The Mechanical Power Transmission association creates standards related to the belt drive and pulley, chain and sprocket, and coupling. 000 / +0. Also calculated are the overall measurements for shaft and bore, as well as the chord height. This series of articles on geometric dimension and control will help you in the. Solved question 5: you have been tasked with designing aKeyway parallel keyways metric t2 wxh bores Shaft key standard sizes rectangular gates keys diameters most non std readily availableKey and keyway. ISO Tolerance Calculator (Explained) Our tool is a fit/tolerance calculator that is addressed to students, employees, and apprentices (trainees) in all technical sectors. It proved useful in establishing dimensions and tolerances for custom engineered coupling products. Moorland Rd. The use of these tolerances is advised for economic reasons. txt) or read online for free. Select the Material. 8. PFEIFER INDUSTRIES, LLC. Each is combined with appropriate keyseat tolerances to make assemblies. Ø25 +0. Moorland Rd. 5-2009 standard has defined different types of GD&T symbols in detail. (Dimensions comply with DIN 6885/1) † Requires use of chamfered keys. spine. Each class lists tolerances for shaft and bore sizes ranging from 0 to 500 mm. based on the table on webpage Factors. As in the example above, this requires looking at part alignment and specifying tolerances referencing fit and function. KeyWay /Key Dimensions. Decrease Cycle Times and Increase Shop Efficiency. A position tolerance is the total permissible variation in the location of a feature about its exact true position. So I made it myself. 2 metric standards . But to calculate the normal tooth force and its radial component correctly, the effective pressure angle, not the nominal profile angle, must be used. Two PDFs with useful engineering data on keyway sizes and engineering limits and fits, just download. Also, T1 and T2 are notThe basic size of the feature or fit is the dimension the tolerances will be applied to: The zero line in the calculator. ISO 286 Chart Calculator. 2 metric standards . 2geeksonline. The second is a P9 tolerance. Select the Woodruff Cutter from the tool menu (Note: Keyseat cutters are referred to as Woodruff cutters for feeds and speeds):Example: Using the taper calculator. Unless otherwise specified, the shaft keyway is assumed to be standard. tolerances, standard bore and keyway tolerances inch and mm, table of metric shaft tolerances per iso 286 chart, din 6885a parallel keys conexmetals com,. This publication is intended to provide dimensions and tolerances, which permit bushings made by one manufacturer to be used to mount sheaves or other products. The symmetry tolerance does two things to the keyway; sets a tolerance for the keyway to be offcenter as well as tolerancing the width. A is the cross-sectional area of the conductor. - Series EL couplings supplied withLimits, fits and tolerances calculators: Calculates the limits, fits and tolerances according to ISO 286(2010), ANSI B4. The sunk keys are of the following types : 1. 0. 5-2009. Keyshaft keyed shaft, diameter 1 7/16 in, keyway 3/8 in x 3/16 inKeyway parallel keyways metric t2 wxh bores Keyway keyed keyways boresGates belts, hoses, and applications: standard & non-standard shaft key. P9. Table of Metric Shaft Tolerances per. dAll Types (Page 1 of 2) ++ Keyways will be furnished per ISO/R773 and Js9 width tolerance unless otherwise specified. Large multiple splines are usually broached by single- spline or keyway broach, shimming between the passes till full depth is reached. The keyway dimensions are also different from the English system. 1. infra. NOMINAL SHAFT DIAMETER. 99. Keyway Calculator *tweaked* - just enter diameter of shaft (or bore)! DMF_TomB, I took your calculator you posted, added some more graphical info and tweaked a bit, so it automatically looks up the standard keyway for any given diameter shaft or bore and adds everything (again, automatically) to the graphic. keyways /keys dimension in accordance with BS 4235-1:1972: Specification for metric keys and keyways - Parallel and taper keys. 5010”minus . 0001” is classified as a class Z tolerance. Here we can calculate rigid connections, namely the pinned, keyed, splined and flanged ones. 1-855-646-1390 (Toll Free in the U. Standard. Calculate chain drive designs and select the most appropriate belt and sprocket for your application. Advantages of Keyway Broaching on CNC Lathes. 628 2. The following tables show standard dimensions for keys and their grooves. Free engineering tool to calculate the bending moment and shear force diagrams of a multi-diameter shaft. S é c 16 v qté = 10 €0. Metric – Rectangular B. For interference fit with setscrew over keyway, see Table 2. 010 Height (d) (t) - DIM Keyway Width (w) AGMA 9002-A86 Inch Bore and ANSI B17. 093 / . 1, the Metric key size is W x T. There are two calculation options available, general engineering use or custom use. - Series F couplings supplied with 4) All dimensions per AGMA 9002-A86 interference fit bores without set screws commercial standards. 5 to 1 (often presented as 1. 2-1967 (R1998) - Engineers Edge. The letter is the tolerance deviation, the number the tolerance grade. 406 Minimum 3. Wind Load Calculator. C +0. We call this shape a keyway. 1 tolerance charts are provided in thousandths (. In other words, a gage may not accept a bad part, but it can reject a marginally good part. Keyway Size Chart - Farrell Bearings%PDF-1. 493. The relative position of the holes is. . Total revolutions of shaft = 900x 10 6 revs. 65) Nominal dimension Tolerance Zones over to U7 S7 R7 P7 P9 N7 N9 M7 K7 J7 JS9 H7 H8 H11 G7 F7 F8 E8 E9 D10 deviations in µm 1 3 -18 -14 -10 -6 -6 -4 -4 -2 0 +4 +12. 1-1967, ASME standard B17. Performance and operating conditions . 5^circ θ = 80. - Series F couplings supplied with 4) All dimensions per AGMA 9002-A86 interference fit bores without set screws commercial standards. In general, the dimensions contained in ANSI/AGMA 9002A86 represented the dimensions and tolerances used within the industry for pre- - engineered couplings. Recommended Hub Keyway Dimensions (mm) Reference AGMA 9112-A04 Standard metric keyway width tolerance per Js9 Imperial Standard Bore and Keyway Info Recommended Bore Tolerance for Imperial Shafts (Inches) Nominal Shaft Range Shaft Tol. Max. Read. In other words, a gage may not accept a bad part, but it can reject a marginally good part. 1-1967 (R2013) standards. 1 Square Keyway Tolerances - Free download as PDF File (. 3. 69 inch. 4235 : PART 1 : 1972. 33. To determine the hub T dimension shown in figure 1, add the keyway depth listed in question 14 (Table 8) to the nominal shaft size. The system of limits and fits is useful for determining tolerances of components that need to have a relationship or function with one another. The key length should be less than 1. 095 . Key stock and bar stock are frequently used interchangeably, however there is a difference. Designation of feather key, type A, width b=12mm, height=8mm, length l. Unless otherwise specified, the shaft keyway is assumed to be standard. Easily calculate the values required to cut keyseats and keyways. a) End-milled or prole keyway b) Sled-runner keyway. 8 6 6 23 30 8 3. Shape and dimensions of parallel key and keyway Shape and dimensions of taper key, headed taper key and keyway Excerpt from JIS B 1301:1996 S1 = b's tolerance× 1 2 S2 = h's tolerance× 1 2 h2 = h, f = h, e ≒ b S1 = b's tolerance× 1 2 S2 = h's tolerance× 1 2 Key body Cross section of keyway Key body6. 000 / +. 3 8 7 31 38 10 3. Tolerance of ± 0. CAGE Code 06324 Printed in U. The gear calculator is a comprehensive software which, after inputting various parameters related to gear calculations, computes on-line automatically gear sizes, strengths, working forces, tooth forms, backlash conversions, etc. 5 +. Keyway Width. Check out this Dowel Pin Slip Fit Tolerance Chart for further consideration on slip fit tolerances. w / 3 = d / 6 where. Refer to the Factory for larger coupling sizes. 5 +. 5. Re: what should be the length of key way for 155 dia shaft. The advantage of the Js9 tolerance is that the key can be inserted and theSquare Keyway Tolerances Page 1 of 4. Keyway Depth (Normally 1/2 of width) Total Height (X) = Depth (Y) = Metric Calculator Bore Size. ISO and ANSI Standards. ISO tolerance zone calculator for metric fits ISO Tolerance zone calculator Usage The calculator application page is divided into 3 windows. 252-0. Tolerance each on T1 and T2 is -. It covers the principles of bearing selection, the bearing interfaces, the tolerances and resultant fits, and the lubrication and sealing systems. The following Engineering calculator will show the plus and minus tolerance for the specific ISO 286 hole tolerance data. Download. The bottom circular portion is placed in the shaft by. Rectangular sunk key. The gage would be assembled and marked as . ANSI Standard Woodruff Key Size Table Chart ANSI B17. 0001”. A rectangular sunk key is shown in Fig. Limits of Size For Unilateral Limits, a case may occur when one of the limits coincides with the basic size, e. If it is with the end-customer, it is of course a non-starter. And the dimension is added from the bottom of the keyway to the bottom perimeter of. and dimension tolerances. 4375 1. The Woodruff Key numbers indicate normal key dimensions. Also see Table of Shaft Tolerances per. Learn what True Position is, how it is figured, and get a free. ISO/R 773:1969. 5555 S. The Woodruff Key numbers indicate normal key dimensions. 1 Tolerance Table provides a suitable range from which appropriate tolerance for holes and shaft can be selected. 597 7/16 . pdf), Text File (. The True Position is the exact coordinate, or location defined by basic dimensions or other means that represents the nominal value. Square Keyway Tolerances Page 1 of 4. 376 . To broadly and briefly touch on bore and keyway standards, the North American (inch/imperial) standards tend to be more straight forward with limited variation (derived off the shaft). 3. The following tables report the preferred metric fits and tolerances for hole and shaft basis systems given by the ISO 286-1 (2010) and ANSI B4. ANSI Standard Woodruff Key Size Table Chart ANSI B17. A woodruff key, also known as a half‑moon key, is a semi-circular machine shaft key that prevents gears, hubs, or other components from moving independently of a rotating shaft or spindle. - Show the tolerances based on ANSI/ASME B17. 4: 2. To calculate addendum and dedendum, the formulas either from the ANSI or the ISO standard can be used. 30. Z = ( D / 2 ) cot ( α / 2) α = countersink angle. His claiming that if his going with the standard dimensions and tolerances (0. keyway tolerances Mechanical engineering other topics. It calculates upper limit, lower limit, maximum diameter, minimum diameter and range by simply entering a basic size and selecting the desired tolerance (DIN EN ISO 286 norm). Keyway Js9 Tolerance Chart is available in our pdf compilation an online access to it is set as public so you can get it promptly. 13. If needed, also input the gear cutting tool's tip rounding radius coefficient. Select the Machine. This enables the use of standard gages. The second is a P9 tolerance. Two (2) inputs are required, See the application illustration at bottom of page. Rectangular sunk key. Semi-circular pocket in the shaft directly cut by woodruff key cutter. 1 Square Keyway Tolerances Minimum 3. 000 +/- . Non standard bores and over the keyways. ISO TOLERANCES FOR METRIC FASTENERS Hobson. 614 Maximum. I've selected a shear strength = S s = 200 MPa, and a compressive strength = S c = 130 MPa. 000-0. Fits and tolerance calculator for shaft and hole tolerance calculation according to ISO 286-1 and ANSI B4. Standard External Metric Thread and Fastener Sizes M 0. 5010” Class Z Go/No Go Plug Gage w/handle. - Calculate the dimension for programming the depth of the keyseats. If the shaft and bore shift in opposite directions, you need to account for that. Ø25 ±0. A shaft key is a small metallic component mounted between the shaft and hub to restrict the relative motion. The shaft is under torque T, applied to the end. Shaft with Two Keyways Torque Applied Deformation and Stress Equations and Calculator. 000. 5000 2. pdf), Text File (. 7500 3. 01 mm can be obtained between surfaces being cut simultaneously. Ultimate tensile strength 580MPa, Yield stress approx 300 MPa. The webpage also links to a technical data sheet for slewing bearing. For combined stresses, as discussed in Section 10. 1250 0. 0000 /-. 252, the bonus tolerance is 0. 2 Flatness 5-23 13. D o 3) =41,5 MPa (F of Safety (S s / τ) of about 4,8) . Technical drawings often include notations such as “50 g6” or “17. 002″ The MMC is 0. Thus, a 5mm depth will be optimal for this assembly. RoyMech Resources Keyways Woodruff Metric key and Keyway Dimensions These Pages include various standards. DIN 6885 Keyway, key details Extract Page 1 heavy type d b P9 / JS9 Hub keyway b P9 / N9 Shaft keyway h t 1 = d + t 2 t 2 t 3 = d – t 4 t 4 6 2 2 2 7 1 +0,1 4,8 1,2. R o c k w e l l B 8 2. de can quickly implement every wish in every lot size! To go to the page of our product partner, please click here! The following books can be recommended without restrictions. 3) Keyway fillet radius to be specified by customer. Cut it to length to create the machine key you need. Parallelism tolerance in gd&t is a type of orientation control tolerance that controls the parallelism of two lines, surfaces, or axis. You do get an implied symmetry to the central axis. Notes: n Tolerances for bore and keyways are found in Engineering Data section (pages ED-10 and ED-11). 0000 0. Keyway Js9 Tolerance Chart 173 255 205 43. Run Keyway & Tolerances Calculator on PC with LDPlayer. 4 Coupling Interchange Chart Gear Couplings QUICK FLEX® with black insert high-speed split cover Part # Torque Nm Max Bore mm Part # Torque Nm Max Bore mm 101 1,140 44 QF25 1,407 50 101-1/4 1,756 47 QF50 2,992 60P9 Tolerance Keyway Broaches Metric Hassay Savage. Bores with closer tolerances will be supplied at a slight increase in price. Metric Keyways Dimensions ISO/R773. keyways /keys dimension in accordance with BS 4235-1:1972: Specification for metric keys and keyways - Parallel and taper keys. 625 / . , New Berlin, WI 53151-7953 March 2015 (PDF. - Calculate the dimension for programming the depth of the keyseats. 1. 9. 6. Material group Material name minimum 45 deg chamfer or radius r_1 maximum 45 deg chamfer or radius r_1 Draft angle a (for shapes G, H, J) Designation Hub Fit regarding. find tolerance ITn in table to fit the min and max limits : 2*ITn < ∆MAX −∆min ITnapplied to shaft and bore c= ITn (and a-b = ITn) worst combination of shaft and bore give the conditions : C1 : satisfy ∆ < ∆MAX a ≤ ∆MAX C2 : satisfy ∆min < ∆ b ≥ c + ∆min = ITn+ ∆min A4 : find if a fit that can satisfy C1 and C2 :2. Composite tolerances are used when we have relatively looser location requirements but tighter orientation tolerances. com Web site: (t) - DIM Keyway Bore (inches) Reference Height (d)Straight-sided splines for cylindrical shafts with internal centering — Dimensions, tolerances and verification. Keyway Dimensions Key Dimensions The inch and metric. Keyway Depth = 5mm. Double bearing supports use a Type 3N, 3L and 3K. Keyway Bore Diameter Size Bore Reference -0. 0 +0. ANSI limits and fits calculator works in line with ANSI B4. In other words, the GD&T "Position" Tolerance is how far your feature's location can vary from its "True Position". Keyway Js9 Tolerance Chart Keyway Js9 Tolerance Chart You have stayed in right site to begin getting this facts.