Companion pulleys contain integral spokes which run radially on the pulley. 1N, 2N, 3N and 4N are designed to be a non-driven support end. Standard Sprocket, Model 25B. As double U- joints, they connect and transfer torque between two shafts that are either parallel to each other or are misaligned at an angle. Shaft keyed keyway aluminum diameter grainger length motor shafts close. BRITISH STANDARD FOR. Knurl. Shaft Key Seat Depth Control Values S and T for Shaft and Hub ANSI B17. The dimensional charts below relate to metric rectangular keyways and metric rectangular keys, imperial rectangular keyways and imperial rectangular keys and imperial square keyways and imperial square keys. In manufacturing upon 6885 Information used with permission ot Martin 02007 Shatt Keyseats/Hub Keyways Standard Keyseats/Keyways Sra' IoW Square Keyways Metric: WxHKey W x T2 Keyway American Standard —. Also known as half moon keys. To confirm the status of any standard, identify the replacement standard if it is obsolete and/or purchase the standard please use. Those standards are also summarized in coupling manufacturers’ catalogs. Table 1 details the appropriate key slot and key sizes for various metric bores. 2-1967. Generally, there are two classes of stock available for sunk keys, mainly parallel keys. Choose from our selection of keyway stock, including machine key stock, rounded machine keys, and. Non standard bores and over the keyways. 2180 Corporate Lane, Suite 104 ~ Naperville, IL 60563 USA Phone (630) 596-9000 Fax (630) 596-9002 Keyway AGMA 9002-A86 Inch Bore and ANSI B17. Specifications Met. Bore and Keyway Tolerance Table. E. Other inch and metric sizes are readily available. A. ANSI-B17. Where a key is to be used it should be parallel and side fitting with top clearance. They are also often used on tapered shafts. 437 / . Choose from our selection of metric shafts, including over 5,200 products in a wide range of styles and sizes. 50 : BR-10 Details:Fuller Fasteners, Distributor of Metric and Imperial Fasteners, stainless steel, brass, nylon, hex nuts, bolts, nuts, screws, taps, dies, tools and kn95 masks. Standard Metric Keys amp Keyways for Metric Bores with One. Get In Touch. I. Also known as step-cone pulleys, these have multiple groove sizes so you can quickly change rotation speed by moving your belt to a different groove. Find the depths to cut in keyway and keyseat. 020 0. ; Image credit: Carlisle Power Transmission. We offer a comprehensive selection of more than 27,000 miniature and specialty cutting tools that are all fully stocked. The first is Js9. At Eagle Tool, we stock a full line of both standard and metric keyways, held in an oversize condition, so that we can alter to suit your immediate needs. Single bearing supports use Type 1N. Woodruff Keys are an alternative to Parallel Keys. Standard Metric Keys amp Keyways for Metric Bores with One. Because of the intricate craftsmanship involved in fabricating a broach tool, this often involves weeks of production. Dimensions of parallel keys and taper keys. In stock and ready to ship. com. a keyway and a keyseat, which is a slot and pocket in which the key fits. 2 continued. Machine the center of these sprockets to fit the exact dimensions of your shaft. Taper per Ft. Standard External Metric. 3 Preferred length and weight of keys - Preferred length and weight of keys is given in Table 4. Detailed width tolerance. The parallel keyway milling process starts by cutting a simple keyway slot, all the way through the axial diameter of the part. 0005 / -. Metric External Table Chart Thread Designations Sizes M 1. We can also make special pre-keyed shafts (English or metric) with single, multiple, or interrupted keyways in diameters as small as 1/. DIN 6885A Steel Plain. These are standard metric-sized reamers. . The relation between diametral pitch and module is as follows: 25. A list of standard. Keyway Broaches. A common standard available from the Mechanical Power Transmission Association is. You can think of them as being Internal (Holes) or External (Shaft) features. British Standard :BS 46 Part 1 : 1958 Keys and keyways and taper pins. To keep abreast of progress in industry, Australian Standards are subject to peri-odic review and are kept up–to–date by the issue of amendments or new editions as necessary. Many keyways are milled directly into a shaft or broached into the. The ISO sprockets have large pitches that are measured in sixteenths of an inch, but are expressed in metric units. G&G Manufacturing Company 4432 McKinley Street P. 40. C, Cotter Pin Hole has centerline. 000 on the width and ends of the keyway, +0. depth. Bushings rest inside the arbor hole of your workpiece and act as guides to ensure rigid and accurate keyway cutting. 19-1997; Design of Square Key and Keyway (Wood Ruff. . Max. Shallow keyway depths must exceed 2/3 of the full keyway depth of the square keys shown above. Constant-Tension V-Belt Pulleys A built -in spring maintains tension on your belt. 002. Cartener Pulley Keyway Key - Square Key Stock 60pc - Keyway Stock, Keyway Tension, Keyway Blank - Keyway Plastic Box - Flywheel Keys - Pump Shaft Key - 1/4 Key Stock - 3/16 key stock. Reliable. O. Taper metric dimensions keyway key bs 1972 keyways keysKeyway sizing chart Standard and metric keyway broachesMetric woodruff keys are supplied to din 6888 / iso 3912 in c45k key. com. All Types (Page 1 of 2) Metric Key & Keyway Dimensions Per ISO/R773 Js9 Width Tolerance H Key & Keyway Dimensions Millimeters Shaft Diameter D Over. Taper per Ft. 1 Class 1 standards for dimensions and tolerances. 1/2. All keyed Shafting is guaranteed to fit on a bearing, and the ends can be. 1-1967, ASME standard B17. Certified drawings of all ratings are available for construction purposes. Keyway additional modification is available for both single. 00 : BR-00 Details: 1/16-1/8 Dumont Keyway Broach Set, 0823-0420 : 1/16, 3/32, 1/8: $500. txt) or read online for free. 094 0. Specification. 12 mm. dimensioned by its width and depth on the shaft keyway sides. 2) Dimension h of the taper key names the largest height of the key, and dimension t z. The bore diameters listed in the "Keyway Additional Modification Applicable Bore List" in the table below are available for the service. Choose from our selection of metric shafts, including over 5,200 products in a wide range of styles and sizes. The differences are highlighted in red in the images below. ANSI Hardware Deign and Engineering Data. S. Milling a keyway in a steel shaftKeyway shaft coupling hole service couplings modification additional motion control tapered parallel Shaft keyway keyedKeyway metric key iso dimensions standard keyways r773 pdf keys shaft bores hub depth diameter standards engineering width table angelica. The keyway dimensions are also different from the English. 2500 0. Carbide Staggered-Tooth Keyseat End Mills. Mechanical Power Transmission Association 6724 Lone Oak Blvd. 14mm X 9mm Rectangle Plated Key Steel x 12'' Long. These explain the sizes and dimensions required by different keyway families according to different manufacturers, and the charts are used in the making of keyways to ensure correct sizing. Note: Broaches have a. Undersized Machine Key Assortments Since they fit more loosely than standard keys, these undersized keys are best for uneven keyways or when you need to disassemble parts frequently, such as during maintenance or prototyping. Taper metric dimensions keyway key bs 1972 keyways keys. This International Standard specifies the dimensional characteristics of thin parallel keys and of the corresponding keyways in shaft and. Blair 7/8" ROTO Cutter (BLR-11340). DOWNLOADS. 062 0. --keyway dimensions Keyway sizing chartDimensions standard keyseat keyway shaft shafts diameter nominal. 6 mm. 13. 8mm 2. A rectangular sunk key is shown in Fig. To confirm the status of any standard, identify the replacement standard if it is obsolete and/or purchase the standard please use. The following tables show standard dimensions for keys and their grooves. Broach Style # I. Machinable-Bore. TAPER KEY DIMENSIONS - METRIC - BS 4235 -1: 1972Stock Keysteel Keyway Standards – Imperial and Metric 41 Keyway Tolerances – Imperial and Metric 45 Worm Jacks Screw Worm Jacks 2T to 100T 47 Valve Operators KV5 Input Stop 52 Reference Data Gear Calculations 53 Heat Treatment 53 Gear Trains 54. 2-1978 standards. Shaft Keyway Shear and Yield Strength Formulae and Calculator. 1875 0. width depth tol. 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. 0mm to 26. Keyway Bore Diameter Size Bore Reference -0. Recommended uniform relationship between shaft diameter and key sizes for parallel and taper keys. 0 2. Design of Standard Metric Keyways for Square and Rectangular Parallel Keys. noahb110. Because they're usually shorter than. O. All dimensions given in inches. 000 inches on width. Keyways for Milling Cutters and Arbors. Non standard bores and over the keyways. Regions using "inch" units work with NEMA standards (see page NEMA Frame Size). JIS B1180-8. Max. British Standard :BS 46 Part 1 : 1958 Keys and keyways and taper pins. Home. 0010. 427-140_manual. Also known as sine keys. A rounded bottom allows these keys to rock in their seat to relieve stress on the shaft caused by vibration or misalignment. 4375 1. Double bearing supports use a Type 3N, 3L and 3K. Keyseat Alignment Tolerances: A tolerance of 0. Hole-Mount Fixture Keys. This key stock is stepped to match repaired keyways in shafts or gears. Browse L Type Hubs without Keyway - Metric Bores in the The Timken Company catalog including Part Number,Description ,Bore Size,Coupling Size,Keyway Size (W x D),Length thru Bore,Hub Length,Outer Diameter,CAD. ANSI B17. View. We stock pre keyed shafting in many diameters, including metric diameters, with standard keyways. Contact our sales office and consult our shipping policy for further details. (inch. This produces a high strength-to-weight ratio advantageous to fractional. Key Type. See ANSI/AGMA 9112-B14 for metric bores with metric keyways. Related. Although similar in principle to BS 46-1, for inch. 8mm 1. However, in the case of cutting simple, standard keyways V W Broaching Service carries a full line of tools ready for immediate or expedited shipment. These keys have a rounded shape that makes them easy to remove when parts need to be taken apart frequently, such as for maintenance or prototyping. 1-1967 or JIS B 1301-1996 specify sizes and tolerances of the keys and keyways. The following table includes standard rectangular shaft key sizes for shaft diameters ranging from 5/16" to 9": Standard rectangular key stock is readily available from most Gates Industrial Distributors. Consent to Cookies & Data processing. STANDARD KEYWAY BROACHES revtool eu. The following tables show standard dimensions for keys and their grooves. 500 ± 0. Rectangular-faced keys are used for larger shaft diameters and square keys are used for shafts smaller than 6. December 30, 2020. 062 0. Install these keys in a drilled and reamed hole to locate fixtures and vises on your machine table. 2M - Lock Washers (Metric Series) This Standard covers the dimensions, physical properties, and methods of testing for helical spring and tooth lock washers. 020 0. 6 Hollow shaft with key - standard design The standard design uses the parts that are normally supplied with every hollow shaft, as shown in Figure 4. Metric Key Keyway Dimensions Per ISO R773 Js9 Widt. Also calculated are the overall measurements for shaft and bore, as well as the chord height. Rather than enjoying a good book with a cup of coffee in the afternoon, insteadStandard Bore and Keyway Tolerances (Inch and mm) Keyway Bore (inches) Reference Height (d) 1. 800. Choose from our selection of metric keys in a wide range of styles and sizes. pdf. All the standards recognize this and specify tolerances for. In the National basketball Association (NBA), the court is 28. 0 2. The schematic representation of the fit is also drawn by tolerance calculator. 57 inch; Coupling Design: One Piece Clamp; Design Units: MetricPFEIFER INDUSTRIES, LLC. Specification. 5 times the shaft diameter to ensure a good load distribution over the entire key length when the shaft becomes twisted when loaded in torsion. These easy-to-adjust components maintain perpendicularity to <0. Finished bore with standard keyway on other side protects shafts from damage; Customize bore size in-house to save time and cost; Superior holding power over set-screw type couplingsVariations of machine keys include parallel keys, tapered keys, Woodruff keys, hi-pro keys, and non-rok keys. 1 Scope. ) Imperial Sizes (inch. , depending on the lock nut size Mounting slots according to DIN 981 HM/HME and HM . Depth of keyway is measured at CENTRE. Standard Metric Keys amp Keyways for Metric Bores with One Key Js9 Width Tolerance « Keyways will be furnished per ISO R773 and Js9 width tolerance unless. Machine keys are installed in a keyed joint and are typically designed to fail before other components often saving more. 2 out of 5 stars 119. Metric – Rectangular. 3. We offer the most common American Standard and Metric Pull-Type Keyway Broaches, available either as Industry Standard 500 Series with threaded pull end or 600 Series with notched pull end. When one end wears out, switch to the opposite end for two times the life of a standard carbide end mill. 3mm 2. = 1. ). Read more on how keys and keyways work and what types are available – Keys and Keyways. 14. in Machine Elements & Structural Engineering. This standard presents metric dimensions, tolerances, sizes and fits for straight bores, tapered bores, keys and keyways for unmounted industrial flexible couplings. For more information, contact our sales department at 906. AB DE F H LO P T U V AH KEYWAY DIA. DIN 7154 H7 Metric Bore and DIN 6885 Js9 Square Keyway Tolerances Page 1 of 4 PFEIFER INDUSTRIES LLC Standard Bore and Keyway Tolerances Inch. RE: Metric standard for 2 keyways in a shaft (180 degrees apart) Artisi (Mechanical) 9 Oct 19 15:02 Why 2 keyways, does the impeller have to rotate in 2 directions, or is it poor design or a fix up that has been introduced. Shaft and Hub Keyway and Key Sizes dpk3n3gg92jwt. All dimensions in mm. Keyway (mm) Key (mm)* From To Width (W) Depth (h) Width (W) Depth (T) 6 8 2 1 2 2 9 10 3 1 3 3 11. DIA. TAPER KEYWAY DIMENSIONS - METRIC - BS 4235-1: 1972. Unless stated otherwise, hub torque and horsepower ratings assume a SOX (NBR) rubber spider is being used. DIN 960 is the specification for partially threaded fine thread metric hex capKey (engineering) In mechanical engineering, a key is a machine element used to connect a rotating machine element to a shaft. - inch bores with metric keyways; - metric bores with inch keyways; - metric bores with metric keyways; or - shaft keyseat tolerances. 5 +. J755_200912. 0mm to 26. BSI Shop. Index the adapter 180 degrees on rotor shaft (see Figure 6-22 C). Metric DIN 6885 Parallel Key High Type “A” (aka feather keys) is a component used to connect machine assemblies to a shaft in. It was published under the authority of the Executive Board on 22 February, 1972. Fractional inch and metric are measurement systems used to express the size of items that have standard trade sizes. Metric External Table Chart Thread Designations Sizes M 1. 2 Normative references . 587 / 2. Therefore, this standard does not intend to replace any existing metric standards, but to define what is preferred. Bushings rest inside the arbor hole of your workpiece and act as guides to ensure rigid and accurate keyway cutting. All dimensions are given in inches. 4 m= ––– (2-5) P d 2. Pre-cut key stock is available in standard inch and metric sizes. American Metric ® Corporation Ametric ® 623 GROUP: 064 Metric Shaft Keys DIN 6885 A 20x12x170 22x9x170 22x14x170 25x9x170 25x14x170 28x10x170 28x16x170 32x11x170 32x18x170 36x12x170 36x20x170 40x14x170 40x22x170 45x16x170 45x25x170 8x7x180 12x8x180 14x9x180 16x7x180 16x10x180 18x7x180 18x11x180 20x8x180 20x12x180. Keys and keyways BS 46 Part 1 : 1958 Square Keys and keyway Dimensions all dimensions in inchesPage Count: 34. keyways & keys dimension in accordance with BS 4235-1:1972: Specification for metric keys and keyways - Parallel and taper keysMetric; WXHKey W x T2 Keyway ISO Standard — mm Snart Dlameter WI dth Groove dimensions keys DIN 6E-ga. You may also refer detailed information on British Standard Metric Keys and Keyways. It is also possible to become a BSI member and obtain copies of the Standards at much reduced prices. w / 3 = d / 6 where. Jorge. Keyway Js9 Tolerance Chart 173 255 205 43. The sizes and tolerances contained in this Standard are intended for single key applications only. In Australia, backyard half-courts generally start in size from about 7metres in height to fit the "free-throw line" (or 9m to fit the "three-point line") and 4 or 5 metres in width and upwards. Standard tolerancing on stainless keys and keyways. Gates belts, hoses, and applications: standard & non-standard shaft keyTaper metric dimensions keyway key bs 1972 keyways keys Standard metric keys & keywaysMetric key ametric. 438 . Keyway metricFalk_metric_key_keyway. Keysteel Tolerances & Standards Keyway Standards – IMPERIAL Keyway Standards – METRIC Keysteel Merchandiser Engineer’s Chalk Ordering Information 1. Total Height (X) = Depth (Y) = Return to broaching : 2388 State Route 726 Eaton, Ohio 45320 (937) 456-2232 Fax (937) 456-2282 webmaster@kramerusa. 0mm metric, standard. Specification. 2-6 Antimony St, Carole Park QLD 4300, Australia Phone +61 7 3271 5424. Metric series: KM/KML, HM . 350 Maximum 2. Thin parallel keys and their corresponding keyways (Dimensions in millimetres) Thin taper keys with or without gib head and their corresponding keyways (Dimensions in. 010 / -. Unless otherwise specified, the shaft keyway is assumed to be standard. 3mm 2. Chain. Our Pull-Type Keyway Broaches are ideal for applications in high volume production pull-type machines. Standard keyway dimensionsKeyway chart Keyshaft keyed shaft,. 40SD Single/Double Sprocket. K40 sprocket old type B semi F series with machined shaft holes (New JIS key) Standard. Stock Sizes of Keyshaft. Those standards are also summarized in coupling manufacturers’ catalogs. Insert JS9 Tolerance. Minimum keyseat width is that figure. Keyways Index BS 46 Keys and keyway Dimensions-Parallel Rectangular Ref Standard . Preferred Fits and Tolerances Charts ISO Amesweb. Box 12086 Omaha, NE 68112-2086 encompassing standard. BS 970, Wrought steels in the form of blooms, billets, bars and forgings. STANDARD. Design of Square Key and Keyway (Wood Ruff) Stress, Shear and Torque. Metric Size Carbide Round-Shank Reamers. edu. Relevant British Standards. tolerances and deviations. For dimensions in millimeters, multiply inch values, except thread diameters, by 25. EN Standard. The work of preparing International Standards. 7 size chart. The keys and keyways followed the recommendations of ISO R773:1969 and shaft RoyMech Resources Keyways Taper Metric Key and Keyway Dimensions These Pages include various standards. They meet DIN 6887, an international standard for machine keys. Standard Metric Keys & Keyways for Metric Bores with One Key • Couplings All Types (Page 1 of 2) Renord 21 S Moorland d ew Berlin March reision Telephone a Supersedes Key & Keyway Dimensions – Millimeters Coupling Hub Keyway Dimensions – Inches. British Standard Chain was developed before American-styled chain, but was limited in its. For square and rectangular parallel keys three classes of fit, 'free', 'normal' and 'close', are foreseen. 3mm 3. Nom. This is the most popular series of metric washers that is coupled with KM series metric locknuts. Metric keyways are dimensioned by width and depth as measured from the radius of the. Because this key stock is slightly larger than standard key stock, keys will fit tightly in worn keyways. keyways available upon request. For a worn keyway shaft use our well stocked Interference fit range. Use them to round sharp corners on the edge of your workpiece. Gear G is positively located on shaft S by Woodruff key N . 44. Table of contents. 5") is omitted, it specifies coarse pitch threads. 2 Normative references. 093 / . Because this key stock is slightly larger than standard key stock, keys will fit tightly in worn keyways. Rexnord Industries, LLC, Coupling Group 497-108 5555 S. Metric bores are defined in ISO standards while English bores are defined in AGMA and ANSI standards. These keys have a rounded shape that makes them easy to remove when parts need to be taken apart frequently, such as for maintenance or prototyping. 1 for Js9 Dimensions) Key & Keyway Dimensions – Millimeters Coupling Hub Keyway Dimensions – InchesThe calculations are based on the British standard Metric ISO Limits and Fits. organizations. Couplings • Standard Metric Keys & Keyways for Metric Bores with One Key (Page 2 of 2) All Types . Bushings for smaller arbor holes are collared for easier handling. Engineering Hardware Design Data. Unless otherwise specified, the shaft keyway is assumed to be standard. 1-800-ASK-4WEG Sales 1-800-839-2529 Warranty 1-800-ASK-4WEG After Hours Sales Select after hours option 1-877-WEG-DRIV Drives Tech Support NEMA Standard Dimensions IEC Critical DimensionsDimensions of shaft keys, standardized many years ago, are commonly considered to be the main concern in applying these devices. Metric or inch keyways can be selected with the modification symbol. Keystock is available in both inch and metric sizes. 5020 2. The following Engineering calculator will show the plus and minus tolerance for the specific ISO 286 Shaft tolerance data. Google Rating. 1 Metres Long. Keyway Size Chart - Farrell BearingsStandard Calculator Bore Size. ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). Metric, ISO Heat Transfer Hydraulics Pneumatics HVAC Systems CalcsWhen it comes to Metric Keyway Broach Sets, you can count on Grainger. Milling a keyway in a steel shaftKeyway shaft coupling hole service couplings modification additional motion control tapered parallel Shaft keyway keyedKeyway metric key iso dimensions standard keyways r773 pdf keys shaft bores hub depth diameter standards engineering width table angelica. Categories. 99 #22. H is measured Perpendicular to key. 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 bodyHollow shaft with key - standard design Design and Operating Data 116 Gear Units – 2016 7. T Metric trapezoidal thread, 7H: ISO 2903 Use them to connect gears and other components with tapered keyways to shafts. The profile of a straight sided spline is defined by. When a keyway is damaged, cut a new, wider one. 6 : 621. A pattern of ridged cut or formed into a metal cylindrical handle to provide grip or increase diameter is a. Duy Nam. 1 2. 1 Class 1 standards for dimensions and tolerances. 1. DIN Standard. Standard metric keys keyways for metric bores with one keyKeys imperial machine table ansi parallel asme class key standard fit Keyway metric key iso dimensions standard keyways keys r773 pdf bores shaft hub depth diameter standards engineering table edge widthTable 11-1 key size vs. Shaft /Hub/keyway material (BS EN 10083 C45 normalised. BS: 449: Part 2 requires an active Premium Membership with. - Series EL couplings supplied with clearance fit bores with set screws. * 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). Ref Standard . The key prevents relative rotation between the two parts and may enable torque transmission. 3mm 2. In stock and ready to ship. 16~0. Straight Sided Spline Dimensions. The Woodruff Key numbers indicate normal key dimensions. If you are having a problem placing your online order, have questions about your merchandise, or need assistance with something not listed please call us at 1-716-791-6197. Shaft (Arbor) Keyway Dimension Size Data - ANSI/ASME B94. Keyless Bushings Besides keyed bushings, several types of keyless locking devices using a tapered wedge principle are available. Non standard bores and over the keyways. reconstructingjudaism. Partially Keyed Rotary Shafts. DIN 472 circlips agujeros. Key-Depth Tolerance is +. Standard Calculator Bore Size. Standard Metric Keys & Keyways. Failure to do so British ISO Metric Screw Threads Designations. Standard and metric keyway broachesTable aii-12. They have a high helix angle and a wear-resistant coating for excellent shearing and chip removal in stainless steel and titanium. Regardless of which unit of length you're using, you'll need to measure the following: width, height, and length. Shaft and Hub Keyway and Key Sizes dpk3n3gg92jwt. A list of the standard key sizes and corresponding keyways for Metric shafts are listed below in Table 2. Browse our wide collection of high performance keyway broach sets for sale today. ) Metric Sizes (mm) PART NO. Metric bores are defined in ISO standards while English bores are defined in AGMA and ANSI standards. Mechanical Tolerance Chart Data. Carbide Staggered-Tooth Keyseat End Mills. Referencing Figure 1, the Metric key size is W x T. Keyway Depth. Recommendations for key size, length and keyway depth as a function of shaft diameter are provided in ASME Standards B17. Cut it to length to create the machine key you need. 432 / . S. The tolerances defined in ISO 286-1 are applicable to size range from 0 mm to 3150 mm but there are exceptional cases defined in the. The usage of these tolerances is advised for economic reasons. ; Lowenherz or Löwenherz Thread Size Table; Excel Spreadheet Design Calculator per. Hub keyway depth is one-half the nominal height of the key and measured from the side corner. 8mm 3. Appendix B Approximate equivalents of metric and inch units 22 Figure 1 — Variation in keyway depth in taper shaft 19 Figure 2 — Types of key and position of keyway in shaft 18 Table 1 — Rectangular parallel keys, keyways and keybars 4 Table 2 — Square parallel keys, keyways and keybars 6PREFERRED 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. Total revolutions of shaft = 900x 10 6 revs. Each metric standard is product specific. RE: Standard tolerancing on stainless keys and keyways The keyway must be slightly larger than the key itself if the key needs to fit into the pocket.