metric keyway chart. Dodge mounted ball bearings are available in any of our proven locking devices, including our exclusive 65-degree setscrew locking system, eccentric locking collars, D-LOK ™ concentric clamp locking system, and our patented. metric keyway chart

 
 Dodge mounted ball bearings are available in any of our proven locking devices, including our exclusive 65-degree setscrew locking system, eccentric locking collars, D-LOK ™ concentric clamp locking system, and our patentedmetric keyway chart  The keyway dimensions are also different from the English system

Width Depth Width Depth 51 58 16 4. Contact. Woodruff keys work well near shaft shoulders and on tapered shafts. Then narrow it down to a few of them by going to the left side and looking at the gap at the very bottom. The standard metric fastener thread series for general purpose threaded components is the M thread profile and the coarse pitch thread series. Metric Keyway Chart; Shipping Container Details; Tapping Drill Size Tables; Tolerance Chart; CNC Steel Cutting Processes; Materials Handling Menu Toggle. 5 +. REFERENCE DEPTH. 6 - M 18. Do not chamfer setscrew hole, deburr with a file. Metric Fasteners. Jaw Type Coupling Selection Process JW Selection Process Information necessary before a coupling can be selected: Shaft sizes of driver and driven equipment and corresponding keyways Formulas: Nominal Torque = in-lb = (HP x 63025) RPM Nm = 9550) (KW x RPM Application description Design Torque = Nominal Torque x Application Service Factor. Metric Key & Keyway Dimensions Per ISO/R773 – P9 Width Tolerance . 360 Minimum 2. All standardsTaper metric dimensions keyway key bs 1972 keyways keys. 1250 0. In stock and ready to ship. 99. News. - Series EL couplings supplied with BS 4235-2:1977, ISO 3912-1977: Specification for metric keys and keyways - Woodruff keys and keyways. Metric key keyway dimensions per iso/r773. They can remove more material and operate at higher speeds than straight-tooth keyseat cutters. Width b: Depth : Radius R:. Drill Bit Letter Size. . . D. A keyed joint is used to ensure orientation or restrict rotational movement between parts, as in the case of joining a shaft with a coupling. bores and keyways for flexible couplings metric series web feb 4 2015 ansi agma 9112 b15 describes sizes andHigh-Strength. 0010. Sensor bearing units . 2180 Corporate Lane, Suite 104 ~ Naperville, IL 60563 USA Phone (630) 596-9000 Fax (630) 596-9002 E-mail: [email protected] individual keyway broaches in a variety of arbor hole sizes. Carbon & Stainless Steel Pipe Size Table There are sizeable tolerances that apply to the outside diameter and wall thicknesses. Metric key keyway dimensions Keyway metric dimensions key iso tolerance js9 r773 width per depth hub t2 height radius text mill question answered hasn Shaft diameter solid keyway uniform. They provide the torque to drive the rotating component and help prevent unwanted slipping or movement. Keyway key parallel jis sizes tolerances 1301 mm 1996 pulley excerpt unit techKeyway metric Table aii-12. 5020 2. 360 Minimum 2. Made of chemical-resistant 18-8 stainless steel, these metric screws have an extra-soft nylon tip that reduces the noise, vibration, and damage that can occur from metal-on-metal contact. Workpiece. Conveyor Drive Pulley Arrangements; Impact Beds; Conveyor Components; Types of Conveyors; Piping Menu Toggle. depth tol. Parallel keys are the most common form of keyway. Welcome Location Transmission Bushes Pulleys Belts Vector Belts Roller Chain & Sprockets. . Check Details Gates belts, hoses, and applications: standard & non-standard shaft key. INSOCOAT bearings . A complete coupling consists of two hubs and one spider, or two hubs,. 2 Broaches and 6 Bushings = 12 Keyway combinations. 2; Thread Shear Area for External and Internal Formulas and Calculator per. r1 and r2. Standard Metric Keys & Keyways. Specification. . 6 - 8 - 10 - 12 - 14 - 16 - 18 - 20 - 22 - 25 - 28 - 32. Then narrow it down to a few of them by going to the left side and looking at the gap at the very bottom. 5 6. 1265 0. When a keyway is damaged, cut a new, wider one. Metric keyways are dimensioned by width and depth as measured from the radius of the shaft to the center of the keyway. Key dimensions: Parallel keys are most commonly used. Laminated Paper. is oversize — see charts for proper dimensions. . Information used with permission of Martin ©2007. Woodruff Key Assortments. Also see Table of Hole Tolerances per. 20 4. Labels: Machine Elements. 375 0. Made of chemical-resistant 18-8 stainless steel, these metric screws have an extra-soft nylon tip that reduces the noise, vibration, and damage that can occur from metal-on-metal contact. 2 Normative references The following standards contain provisions which, throughreferenceinthistext,constituteprovisionsof this American National Standard. In stock and ready to ship. Nom. BOTTOM OF SHAFT TO BOTTOM OF KEYWAY. Just enter the size of the key and shaft, then click "Calculate". Metric Stainless Steel Nylon-Tip Set Screws. Increase or reduce your shaft's diameter to fit equipment, or replace damaged shaft ends. Couplings • Standard Metric Keys & Keyways for Metric Bores with One Key (Page 2 of 2) All Types . . RoyMech Resources Keyways Taper Metric Key and Keyway Dimensions These Pages include various standards. 10. 8 Grade Hot Dip Galvanized (ISO FIT) 10. Standard External Metric Thread and Fastener Sizes M 0. b1Tolerance (h9). American system, the keyway in the hub is dimensioned by the width and the depth at the side, but in the metric system the keyway is dimensioned by the width and the depth measured from the raduis of the shaft to the center of the keyway. They have an alternating right- and left-hand tooth style for removing more material at high speeds than straight-tooth keyseat cutters. Keyway Broach 1/16 to 1-1/2 Inch, 2. . Keyway misumiKey and keyway dimensions. 7° Axial Rake. . Keyway sizing engineeringTranseals keyway chart Shaft keyway depth calculatorShaft key keyway guide selection base diameter transmission mechanical knowledge. Address. Falk_metric_key_keyway. Our Price: $23. Metric Key Keyway Dimensions Engineering Hardware Design Data ISO Hardware Specifications Table Metric Key Keyway Dimensions Per ISO/R773 Js9 Width Tolerance. Default metric fastener thread pitch. width tol. Shaft Diameter Keyway Key 39 44 12 3. 350 Maximum 2. Universal Column Dimensions Dimensions for universal steel columns. . 1 Square Keyway Tolerances Minimum 2. Nominal dimensions in mm + 300 + 100 + 200 + 500 + 400 – 500 – 400 – 300 – 200 – 100 0 µm 46 Standardization ISO Tolerance Zones, Allowances, Fit Toleranceskeyway chart hallite web the following tables show standard dimensions for keys and their grooves metric rectangular b s 4235. Keyway dimensionsMetric key keyway dimensions per iso/rtt3 js9 width Inch keyway chart ansi agma shaft key width b4 dimensions diameter nominal reference motor electricKeys keyway metric standard keyways sizes engineering shaft key parallel square fit fits mechanical data rectangular british limits figure. . . 3mm 2. Allowance must be made for keyway and setscrews . Designation - designated as: A parallel key of Type A, width 12 mm, height 8 mm and length 50 mm shall be Parallel Key A 12 x 8 x 50 The keyway is a longitudinal slot in both the shaft and mating part. 1 Square Keyway Tolerances Minimum 2. Conveyor Drive Pulley Arrangements; Impact Beds; Conveyor Components; Types of Conveyors; Piping Menu Toggle. This is an intuitive concept to grasp- a clearance fit specifies a fit where there will always be a gap in the joint between the mating shaft and hole. C +0. 2515 0. 4. Coping with foreign bore and keyway standards | Machine Design. This catalog covers the features, benefits, dimensions, selection, and installation of various jaw type couplings, including the industry-standard L type. Select your units as required. keyways & keys dimension in accordance with BS 4235-1:1972: Specification for metric keys and keyways - Parallel and taper keys clearance fit bores with set screws. 9 Grade Bare Steel with Extended Threads; 12. Sharp-Rite Tools, Inc. Slightly. 000 +. 3 10 8. 47 Cut Width: 1-11/32'' Number of Teeth: 8 Tooth Configuration: Alt. The hub keyway is dimensioned by its width and depth on the shaft – keyway sides. Standard shaft sizes key bushing table qd non bore keys shallow range gates includes specific each alsoKeyway broach cnc cutting hss inch type push machine cutter Table aii-12. Measure the overhang distance at the nut end (draw) with the propeller tightened on the taper properly. The result es/EL is in microns. SIZE ATK100P 3/32 x 3/32 ATK101P 1/8x 1/8 ATK102P 3/16 x 3/16 ATK103P 1/4 x 1/4 ATK104P 5/16 x 5/16. Get In Touch. 316 stainless steel keys have excellent corrosion resistance, but aren't as strong as steel keys. I am an Engineer/part time student (Mechatronics) from South Africa. Steel Pipe Sizes; ANSI 150 FLANGES;Dimension charts for Keys and Keyways Limits, fits and tolerances calculators Calculates the limits, fits and tolerances according to ISO 286(2010), ANSI B4. Shaft Diameter Key Combinations Per ANSI For depth of keyways in Key sizes listed in this table are per the ANSI B17. 1 2 3. BOTTOM OF SHAFT TO BOTTOM OF KEYWAY. Loose running fit for wide commercial tolerances or allowances on. stocks DIN 6885 Metric Shaft Keys in carbon steel; other. To create a keyed joint, a key is used that fits between slots manufactured into the two parts being joined. A tolerance is described using a letter followed by a number. Key size. Check Details. One-Piece Clamping Collars; Two-Piece Clamping Collars. These keys have a rounded shape that makes them easy to remove when parts need to be taken apart frequently. (The ES and EI are the tolerance. 4 mm. . Displaced 90° From Keyway Center. Check Details. 012 in. Bushings for Keyway Broaches. 5020. 000. Plastic. Metric Keyways Index page; BS 46 Rectangular Taper & Gib Head KeyWay & Key Dimensions; BS 46 Rectangular Taper & Gib Head KeyWay & Key Dimensions. Shaft standard key sizes rectangular gates keys diameters most non std readily available Shaft. 1 - 1972. Keyway (Shaft. 062 0. 5000 2. data american national standard keys and keyways standard metric keys keyways for metric bores with one key keyway cutter hole keyway dimensional data for milling centers and arbors ansi asme b94 19 1997 design of square key and. 002 to 0. This standard presents metric dimensions, tolerances, sizes and fits for straight bores, tapered bores, keys and keyways for unmounted industrial flexible couplings. . 4 Metric External Table Chart Thread Designations Sizes M 1. Where To Buy. Tapered Shaft End and Mating. Check Details. The web page provides the ISO/R773-J9 specifications, the British ISO. The following standard containprovisions which, through reference in this text, constitute provisions of s this American National Standard. For example, an ANSI 202 measures 1/16 x 1/4, while ANSI 1012 measures 5/16 x 1 1/2. 424 Minimum 2. Keyway metric 18mm 45mmKeyway chart hallite Shaft diameterChart keyway sizing engineering. Re-design the shaft shown below to be a uniform,Metric woodruff keys are supplied to din 6888 / iso 3912 in c45k key All torque transmissions resourcesKeyway chart bore resources torque alltorquetransmissions. 3D Printing & CAD. Total Height (X) = Depth (Y) = Return to broaching : 2388 State Route 726 Eaton, Ohio 45320 (937) 456-2232 Fax (937) 456-2282 webmaster@kramerusa. When it comes to reliable service and low maintenance, Dodge mounted ball bearings are unmatched in the industry. Therefore most motor series are offered with both standard frame sizes. Check if old prop fits the taper without rocking and check the amount of draw or overhang is enough. Over To (Incl. , Suite 2, Naples, FL 34110. Just enter the size of the key and shaft, then click "Calculate". T. O. Table aii-12. (in) (in)* (in) 45 50 14 3. Keyway dimensions hub metric keyways t2 british bores js9 r773 wxhMetric key keyway dimensions Calculator for designing shaft keysAgma keyway bores engineers edge asa data fit llc copyright 2000 2021. Such as "Medeco Keyways". . Keyway Dimensions. Mechanical Tolerance Chart Data. The Metric system does not refer to keyseat or keyway dimensions. Use them in light duty applications to connect gears and other components to shafts. Keyway dimensionsKeyway sizing chart Metric stepper motor shafts size data tableMetric key keyway dimensions per iso/rtt3 js9 width. Figure 2 Keyway Sizes. Contact PEER Chain at 800-523-4567 or fill out our contact form. 3 12 8. 18. 5000 2. Non standard bores and over the keyways. The Metric system does not refer to keyseat or keyway dimensions. . English Dimensions: Keyway: W x T Key: W x T Metric Dimensions: Keyway: W x h Key: W x T Common dimension specification Keyway Dimensions Key Dimensions The inch and metric dimensions here correspond to common values. 000 Standard Setscrew Locations If one setscrew is furnished the location. Are you looking for Mechanical Engineering Books? <click here>. Metric keys conform to DIN 6888 standards. 5 x 16 5 x 7. This standard incorporates a small portion of the numerous variations of shaft/bore fits. S. 2 continued. DIN 7154, H7 Metric Bore and DIN 6885, Js9 Square Keyway Tolerances Page 1 of 4. Unless otherwise specified, the shaft keyway is assumed to be standard. British ISO Metric Screw Threads Designations. Keyseats and Keyways. Not to long after that, I bought a Dumont inch set. 1890 0. keyways available upon request. Radial shaft seals . Standard sizes shaft key bushing bore table keys non shallow bushings taperlock gates required specific includes eachTranseals keyway. They are called “keys” because they lock a component to the shaft by means of a corresponding keyway in a shaft. 2 kg/m. 8mm 3. 5. Backing bearings . In stock and ready to ship. Gates Belts, Hoses, and Applications: Standard & Non-Standard Shaft Key. Metric Shaft Keys are rectangular or square shaped keyways that are used to lock rotating elements onto a shaft. 5 x 19 6 x 7. . BS 46 Rectangular Taper & Gib Head KeyWay & Key Dimensions Ref Standard . We stock inch and metric taper lock bushings. Also known as sine keys. Re-design the shaft shown below to be a uniform, s. The following Engineering calculator will show the plus and minus tolerance for the specific ISO 286 hole tolerance data. Keyway shaft roymech tolerance Gates belts, hoses, and applications: standard & non-standard shaft key Keyway metric broach keyways broaches. Steel Pipe Sizes; ANSI 150 FLANGES;Drive shaft Design, key and Keyways. web keyway chart the following tables show standard dimensions for keys and. Figure 2 Keyway. Woodruff key is essential for operating high speed. Browse Metric Set Screw Couplings w/Keyway MRC4H-Series in the Climax Metal Products Company catalog including Item #,Bore,OD,Length,Screw Size,Keyway Size,Material,Weight,CAD. Keyway Chart The following tables show standard dimensions. 4. There is no chart of pictures of Medeco keyways. 5 1. , depending on the lock nut size: ANSI/ABMA Std. This will, by necessity, be out of. Their extra depth in shaft reduces the overturning tendency in its keyway. Metric woodruff keys are supplied to din 6888 / iso 3912 in c45k keyKeyway hallite Keyway chartShaft keys. American system, the keyway in the hub is dimensioned by the width and the depth at the side, but in the metric system the keyway is dimensioned by the width and the depth measured from the raduis of the shaft to the center of the keyway. huyett Standard metric keys keyways for metric bores with one keyIssuu keystock. l. of 1 23/08/2018 Metric Key Keyway Dimensions | Engineers Edge | com Got It! Related Resources: hardware Metric Key Keyway Dimensions Engineering. Referencing Figure 1, the keyway dimension is W x T 1. Taper Charts and How to measure propeller taper bores. system. Metric keystock key square rectangular meter plain finish length globalindustrial 20mm 12mm 5mm steel qty min shim tool metalworking toolsG. These fits and Chart keyway torqueKeyway metric dimensions key iso tolerance js9 width r773 engineering depth hub t2 per mechanical height text radius nominal mill Gates belts, hoses, and applications: standard & non-standard shaft keyKeys standard metric keyways mechanical. The keyway dimensions are also different from the English system. KT series thin section tapered roller bearings . Punch and Die Tooling Cross Reference Charts Use the tabs above to select the punch tooling you need with a simple cross reference chart and links to corresponding punch and die style codes. To confirm the status of any standard, identify the replacement standard if it is obsolete and/or purchase the standard please use. h. Metric Shaft Keys are most commonly used to connect a rotating machine element to the shaft. Find the dimensions of metric keyway for different shaft diameters, key sizes, keyway widths, keyway depths and keyway radii. Keyway dimensionsKeyway sizing chart Metric stepper motor shafts size data tableMetric key keyway dimensions per iso/rtt3 js9 width. We strive to ensure we provide correct details here, however we cannot guarantee that every detail is 100% accurate. Check Details. Shaft keyseat dimensions and tolerances were. Shaft Diameter. maybe 20. ("Sharp Rite") products are compatible replacement parts and are not manufactured by the original manufacturer, Mitts & Merrill, L. This key stock is undersized, so keys will fit slightly more loosely than standard keys and are best for inconsistent keyways. SAE Standard. Carbide Staggered-Tooth Keyseat End Mills. 5020. 1mm and it is +0. All dimensions in inches. 1875 0. KEYSHAFT Keyed Shaft, Diameter 3/4 in,. Merely said, the Keyway Js9 Tolerance Chart Pdf is universally compatible with any devices to read. Check Details. keyway js9 tolerance chart web keyway js9 tolerance chart keyway tolerances mechanical engineering other topics may 12th 2018 for shafts 10 to 22mm diameter the keyway key depth tolerance is 0 1mm and it is 0 2mm for shafts 22 to lightKeyseat: An axially located rectangular groove in a Shaft , hub, or bushing. We also have an Metric Keyway Calculator. 3) Keyway fillet radius to be specified by customer. Keyway sizing chartTaper keys Keyway sizes and guidelinesChart keyway sizing. This key stock is stepped to match repaired keyways in shafts or gears. H is measured Perpendicular to key. Select between millimeters and inches the unit of measure the results will be displayed. 5000 2. In stock and ready to ship. Keystock. Also, T 1 and T 2. It will help you find answers that have been asked before, as this one has. stocks DIN 6885 Metric Shaft Keys in carbon steel; other. Metric key keyway dimensions per iso/r773. Keys available with Square and/or Radius ends. Metric Supporting Washers DIN 988 Material Spring Steel, Oil Dipped Hardness: HRC 44-49 1-064-Metric Key And Key Stock Assortment Kits KEYS IN PLASTIC CASE DIN 6885 25 KEY KIT 50 pcs 3x3x30 50 pcs 4x4x60 45 pcs 5x5x63 35 pcs 6x6x63 30 pcs 8x7x50 20 pcs 10x8x50 15 pcs 12x8x50 16 pcs 12x8x120 30 pcs 8x7x100 22 pcs 10x8x100 14 pcs 14x9x200 20 pcs. You can also drop us a message at info@PEERchain. Choose from our selection of key stock bars, including machine key stock, machine keys, and more. Metal Ratcheting Gears. 062 0. 2500 0. Measure the keyway width and height. 0500 605669 5 C 0. Metric key keyway shaft standard keyways falk keys bores resources industrialMetric key keyway dimensions per iso/r773. PFEIFER INDUSTRIES, LLC. • Keys DIN 6885 → Page 842. 11131 Std plain bushings only 11331 TiN plain bushings only No. Principles of sealing selection and application . Currency GBP £ GBP € EUR &dollar; USD &dollar; AUD; Contact & Information. ISO 286KM and KML lock nuts can be reused, provided they are not damaged. RoyMech Resources Keyways Taper Metric Key and Keyway Dimensions These Pages include various standards. Please refer to the appropriate standards for more details. web keyway chart the following tables show standard dimensions for keys and. RDG Tools Catalogue | Broaches ( Keyway Broaches High Speed Steel ) | Metric Keyway Broaches (High Speed Steel) HSS Keyway Broaching Set 4, 5, 6 and 8mm & 13 bushes 12-30mm HSS Keyway Broaching Set. Unless otherwise specified, the shaft keyway is assumed to be standard. Welding. 1250 0. Nominal Dia. ASTM Standard. . Use them on soft surfaces such as. 5 mm. ISO system of limits and fits Part 1: Bases of tolerances, deviations and fits per. keyways & keys dimension in accordance with BS 4235-1:1972: Specification for metric keys and keyways - Parallel. metric key keyway dimensions engineers edge web parallel key and taper keys dimensions shaft keyway shear and yield strength formulae and. 2 standards for dimensions and tolerances. 0 11. Steel Pipe Sizes; ANSI 150 FLANGES;Drive shaft Design, key and Keyways. Metric – BS 4235: Part 1: 1972 Strength U. The module is the length of pitch diameter per tooth. 2 kg/m. 002, -. com. js9 widt. 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. Merely said, the Ansi Standard Keyway Sizes Pdf is universally compatible with any devices to read keyway chart hallite web keyway chart the following tables show standard dimensions for keys and their grooves metric rectangular b s 4235 part 1 1972 imperial rectangular b s 46 part 1 ansi standard keyway sizes pdf gestudy byu edu web. 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. Key steel metric rectangular keys machine chart iso standard flat. C, Cotter Pin Hole has centerline. 2 Normative references The following standards contain provisions which, throughreferenceinthistext,constituteprovisionsof this American National Standard. 015. 9 Grade Bare Steel; A2/A4 Stainless Steel; DIN 933 / ISO 4017 Fully Threaded Hex Cap. 2515 0. Keyways Index. Displaced 90° From Keyway Center. G&G Manufacturing Company 4432 McKinley Street P. Shaft standard key sizes rectangular gates keys diameters most non std readily available Shaft diameterMetric key. What We Do. 4 22. Shaft Adapters. 31 38 10 3. Metric Stainless Steel Nylon-Tip Set Screws. 3 10 8. H is measured Perpendicular to key. Metric External Table Chart Thread Designations Sizes M 1. 125. 000 for all standard keyways BORE, KEYWAY & SET SCREW INFORMATION MECHANICAL P. Keyway additional modification is available for both single. 4- Some internal Grade values must be rounded down to a precision of 3 decimal metric millimeter precision. Metric Key Keyway Dimensions Per ISO/R773 - Js9 Width Tolerance. Metric Keyway Chart; Shipping Container Details; Tapping Drill Size Tables; Tolerance Chart; CNC Steel Cutting Processes; Materials Handling Menu Toggle. Need a price instantly? Contact us now. Teeth are curved and set in an offset pattern for high strength with 25% less operating noise than pulleys and belts with trapezoidal teeth. Keyway parallel keyways metric t2 wxh boresKeyway key rectangular sizes shaft hub keyways specifying studylib Keyway tolerances boreParallel metric keys and. Taper per Ft. 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. Use individual keyway broaches in a variety of arbor hole sizes. Woodruff keys work well near shaft shoulders and on tapered shafts. Sure-Fit or Extreme Variability of Mechanical Tolerances Calculator. Limit your options by eliminating the ones that don't even look anything close to it. Inch (ANSI/AGMA 9002-B4) Metric (ISO/R773) Keyway Chart The following tables show standard dimensions for keys and their grooves. Shaft: Key: Keyway: Nominal Diameter d: Section b x h : Width Shaft & Hub b: Depth. The keyway dimensions are also different from the English system. Also known as offset key stock, use step keys to repair keyways in gears and shafts. * 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). 3mm 5mm 5mm 5mm 5mm 6mm 6mm 6mm 8mm 8mm 22mm 24mm 16mm 17mm 19mm 20mm 25mm Keyway Width (w) 10mm 3mm 3mm 1. 002 -0. 010 Height (d) (t) - DIM Keyway Width (w) AGMA 9002-A86 Inch Bore and ANSI B17. Keyway size. Regardless of which unit of length you're using, you'll need to measure the following: width, height, and length. The most common keyway combinations for large keyways and bores. View product table Download PDF. 0005 / -. 18-8 stainless steel key stock offers a balance of strength and corrosion resistance. WOODRUFF KEY DIMENSIONS ANSI Key No. Shaft t 1. Metric Broach Shims Broach Size Shim Thickness (Inch) Code 3 A 0. Re-design the shaft shown below to be a uniform, s. 2-1978 standards. The problem with taper keys is that they can cause the center of the shaft rotation to be slightly off of the mating part. ISO 286. Book. A sprocket with an internal parallel keyway.