3mm 2. 5000 2. Also known as half moon keys. 490 in 114. 88 mm: Overall Coupling Length: 2. 4mm 8mm 2mm 9mm 12mm 11mm 4mm 4mm 14mm 15mm DIN 7154, H7 Metric. As noted above, when selecting a keyway tolerance, there are two common selections in the metric system. 1 / 0 0. ICS Code (Keys and keyways, splines): 21. 360 Minimum 2. Select the basic size from Table 4-1 and one of the ten fits from Table 6-1 and read or cut and paste limit dimensions and clearances (interferences) from Tables 6-2 through 6-6 or CD. Step bore combinations including inch to metric are also available. Keyway Chart Seals Specification & Size Listings. Nominal Key Size W x D Min. Keyway Size (W x D) No Keyway : Length thru Bore: 0. 09 mm: Outside Diameter: 6. 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. keyways /keys dimension in accordance with BS 4235-1:1972: Specification for metric keys and. Moorland Rd. 200 in 55. Nominal sizes, dimensions; for tangential keys, tapered-shaft-end keys, marine tailshaft keys. 000 / +0. 5020 2. 73 mm. 6 in 66. Shaft standard key sizes table non bushing bore keys qd shallow range gates includes specific each alsoMetric plated key stock, shop home hardware products at low price Metric key ametricKey steel, metric sizes 4-12mm, assorted pack of 10. The Feather Keys or Shaft Keys are similar to the parallel key except that they are radiused on both ends and machined to tight length tolerances. Rectangular or square parallel keys and their corresponding keyways (Dimensions in millimetres) 95. British Standard :BS 46 Part 1 : 1958 Keys and keyways and taper pins. 270 in 210. The keyway dimensions are also different from the English system. 3. Our Standard woodruff keys are machined metal fasteners used to transfer torque from a shaft to gears and function as a fail-safe device and have ANSI Standard dimensions. WOODRUFF KEYWAY DIMENSIONS - METRIC - BS4235:2 -1997. 5 +. 2388 State Route 726 Eaton, Ohio 45320 (937) 456-2232 Fax (937) 456-2282 [email protected] in 10. AUTOMATION & IIOT. Bore Size : 1 7/8 in: Coupling Size: 48 : Set Screw Style Coupling Size (Dimension T) 5/16-18 : Set Screw Style Coupling Location Size (Dimension SL) 0. BS 46 Part 1 : 1958 Square Keys and keyway Dimensions. The deviations are less than the basic size. 790 in 20. 2; ANSI Shaft and Hub Keyseat Dimensions for Woodruff Keys per. This is our collection of frequently used reference tables for shop work. In order to transmit rotation from the shaft to the hub of gear wheels, pulleys, sprockets, couplings, flanges and other coaxial parts, rigid and frictional joints of various types are used. Parallel keys are rectangular shapes with ends that are square (DIN-6885-B), round (DIN-6885-A), or both (DIN-6885-AB). Unless otherwise specified, the shaft keyway is assumed to be standard. The fit designation ranges from clearance fits to interference fits. 2 continued. 4. 06 mmWeb Imperial Keyway Calculator Key dimensions. KeyWay. 186 products. Browse Part Number 68514410208, L Type Hubs without Keyway - Inch (Imperial) Bores in the The Timken Company catalog including Part Number,Item Name,Disclaimer,Description,Description ,Bore Size ,Hub Style,Coupling Type,Coupling Size,Materi. 05 mmBrowse L Type Hubs with Keyway - Inch (Imperial) Bores in the The Timken Company catalog including Part Number,Description ,Bore Size ,Coupling Size,Keyway Size (W x D),Length thru Bore,Outside Diameter,CADBore Size : 3/4 in: Coupling Size: 24 : Set Screw Style Coupling Size (Dimension T) 10-24 : Set Screw Style Coupling Location Size (Dimension SL) 0. Browse Econoline Series M Type Manual Pulleys w/ Keyway - Imperial in the The Timken Company catalog including Part Number,Description ,Bore Diameter ,Belt Type,Model,Keyway Size ,Outside Diameter,Max. Catalog Stock Sizes Available: 0. . • Keys DIN 6885 → Page 842. 30. 8mm 2. ja 10 – 24 60 sh, sds, sd 1/2 – 20 108 sk 5/16 – 18 180 sf 3/8 – 16 360 e 1/2 – 13 720 f 9/16 – 12 900 j 5/8 – 11 1620 m 3/4 – 10 2700 n 7/8 – 9 3600 p 1 – 8 5400 w 1 1/8 – 7 7200 s 1 1/2 – 7 9000 warning: use of anti-seize lubricant on tapered cone surface or on bolt threads whenBore Size : 7/8 in: Coupling Size: 28 : Set Screw Style Coupling Size (Dimension T) 5/16-18 : Set Screw Style Coupling Location Size (Dimension SL) 0. 1250 0. 1265 0. shear stress key τ = F s / (L搓) MPa. These keys have a rounded shape that makes them easy to remove when parts need to be taken apart frequently. Key Size. 3125 0. 4. 30. Details of all keyways. 980 in 24. Center Drill Dimensions. Keyway Size (W x D) 5/16 x 5/32 in: Length thru Bore: 1. 1. com web: Supersedes 4-96Imperial Tap Chart: Keyway Dimensions: Melting Points: Metric Tap Chart: O-Ring Sizes: Pipe Threads: Screw Extractors:. B +0. J Type Flanges with Keyway - Inch (Imperial) Bores S-Flex Endurance® Couplings Close Window The J Type flanges in sizes 3J and 4J are made from die cast of high strength zinc alloy (tensile strength of 41,000 psi) and are furnished bore-to-size. Nominal Shaft Diam KeySize. - Series F couplings supplied with 4) All dimensions per AGMA 9002-A86 interference fit bores without set screws commercial standards. 5 times the shaft diameter to ensure a good load distribution over the entire key length when the shaft loaded in torsion. 0010. Browse SU-6 Type Complete Couplings - Inch (Imperial) Bores in the The Timken Company catalog including Part Number,Description ,Bore Size ,Keyway Size (W x D),Set Screw Style Coupling Size (Dimension T),Length thru Bore,Dimension FD,Groove dimensions keys DIN 6E-ga Shut 1 (With • 1972. See dimensions W and h in Figure 1. Metric External Table Chart Thread Designations Sizes M 1. keyways & keys dimension in accordance with BS 4235-1:1972: Specification for metric keys and keyways - Parallel and taper keys 1, the Metric key size is W x T. 300 in 160. 97 mm: Outside Diameter: 2. 3125 0. 83 mm:. Min. 120 in 79. 02/-0. 3MM KW : Bore Size N/A 38. British Standard :BS 46 Part 1 : 1958 Keys and keyways and taper pins. BS 5686:1986, ISO 14-1982: Specification for straight-sided splines for cylindrical shafts: metric nominal dimensions, tolerances and gauging requirements. 00 mm: Overall Coupling Length: 4. See dimensions W and h in Figure 1. Keys and keyways . Dimensions (Inches) Over. Keyway and Key Size Dimensions * Common dimension specification English Standard Keyway and. As you’ll notice, there isn’t always a perfect substitute. Figure 2 Keyway Sizes. Nominal Key Size W x D Min. - Series EL couplings supplied with Hub keyway depth is one-half the nominal height of the key and measured from the side corner. Max. Easily calculate the values required to cut keyseats and keyways. 250 0. Split pillow blocks – SAF and SAW series (inch dimensions) Split pillow blocks – SDAF series including the extended range (inch dimensions) Non-split pillow housings and take-up housings – SBD and THD series . Standard sheet DIN 6885 Print this page Keyway type in the bore and the shaft ISO Fundamental Tolerances. But ensure the weakened shaft can support the load. 05 mm:. 68 in 42. Imperial units are now legally defined in metric terms. 74 in 95 mm: Overall Coupling Length: 4. ANSI B17. From £344. 84 in -0. 1. Parallel Keys and Key Grooves Note(1) The applicable shaft diameter is calculated from the torque corresponding to the strength of the key, for presentation as referential data for general-purpose use. KeyWay /Key Dimensions. You are here: Home > Knowledge Base > Standard Keyway Dimensions. Sunk keys are sunk into the shaft for half its thickness, where the measurement is taken at the side of the key. B. Height. 490 in 114. All sizes are in inch units. 240 0. Select your units as required. 360 Minimum 2. 5~ x. The key and key seat cross section are ISO standardized. Metric module, side fit. Bore (DimCoupling keyway dimensions conform to DIN 6885, JIS B 1310-1976, UNI 6604-1969, USAS B 17. A square key is used if the deeper key depth is required to transmit torque. Design of Square Key and Keyway (Wood Ruff) Stress, Shear and Torque. 8mm 3. 25 - M 1. Browse L Type Hubs with Keyway - Inch (Imperial) Bores in the The Timken Company catalog including Part Number,Description ,Bore Size ,Coupling Size,Keyway Size (W x D),Length thru Bore,Outside Diameter,CADBrowse Part Number 68514413872, UFH Type with Keyway, Short Version - Inch (Imperial) Bores in the The Timken Company catalog including Part Number,Item Name,Description,Description ,Bore Size ,Hub Style,Type,Hub Size,Material,Set Screw Thr. Width. To confirm the status of any standard, identify the replacement standard if it is obsolete and/or purchase the standard please use. WOODRUFF KEY DIMENSIONS - IMPERIAL - BS46:1The FLA Type coupling consists of two special FLA Type flex hubs, two FLA sleeves and one accessory kit. Also calculated are the overall measurements for shaft and bore, as well as the chord height. 3) Keyway fillet radius to be specified by customer. AGMA ASA Keyway and Bores Design Data including dimension and tolerances. AUTOMATION & IIOT. Browse Part Number 68514411747, L Type Hubs with Keyway - Inch (Imperial) Bores in the The Timken Company catalog including Part Number,Item Name,Disclaimer,Description,Description ,Bore Size ,Hub Style,Coupling. Square sunk key. Couplings • Standard Metric Keys & Keyways for Metric Bores with One Key (Page 2 of 2) All Types Metric Key & Keyway Dimensions Per ISO/R773 – P9 Width Tolerance (See Pg. 96 mm: Outside Diameter: 3. 05. 104 0. ) Metric Sizes (mm) PART NO. British ISO Metric Screw Threads Designations. 2 Keyways - Dimensions for keyways are given in Table 3. Germany. Benefits of Standard Keyway Sizes Nearly every shaft diameter has a corresponding standard keyway width and depth. Bushings rest inside the arbor hole of your workpiece and act as guides to ensure rigid and accurate keyway cutting. Read more on how keys and keyways work and what types are available – Keys and Keyways. 1) The tolerance zone for hub keyway width b for parallel keys with normal fit is ISO JS9 and with close fit ISO P9. Keyway Size (W x D) 1/4 x 1/8 in: Length thru Bore: 1. 1) The tolerance zone for hub keyway width b for parallel keys with normal fit is ISO JS9 and with close fit ISO P9. Metric External Table Chart Thread Designations Sizes M 1. 750 in 19. 02 mm: Overall Coupling Length: 3. 3 Preferred length and weight of keys - Preferred length and weight of keys is given in Table 4. 2515 0. Depth of keyway is measured at CROWN. 8mm 1. 99 mm: Keyway Size (W x D) 5/16 x 5/32 in: Length thru Bore (Dimensions LTB1/LTB2) 1. RoyMech Resources Keyways Taper Metric Key and Keyway Dimensions These Pages include various standards. Imperial Tap Chart. 1875 0. Dimensions shown are in Inches, if you wish to convert to mm, please use our universal converter. Bore Size Keyway Size Nominal Torque Max Speed (Unbalanced) Length thru Bore Flange Diameter (Dimension FD) Dimension HD; 69790413296: Description N/A F 2E HUB RGD 2-11/16 5/8X5/16 : Bore Size N/A 2 11/16 in: Keyway Size N/A 5/8 x 5/16 in: Nominal Torque N/A 31500 in·lb 3560 N·m: Max Speed (Unbalanced) N/A 6000 rpm: Length thru Bore N/A 2. They should be locked by a lock washer to prevent unintentional loosening. Browse SC Type Spacer Coupling Hubs with Keyway, Standard Length - Inch (Imperial) Bores in the The Timken Company catalog including Part Number,Description ,Bore Size ,Hub #,Keyway Size (W x D),Outside Diameter,Dimension L,Dimension SLImperial Tap Chart: Keyway Dimensions: Melting Points: Metric Tap Chart: O-Ring Sizes: Pipe Threads: Screw Extractors: Sheet Metal Gauges & Weights:. Bore Size : 1 1/4 in: Coupling Size: 38 : Set Screw Style Coupling Size (Dimension T) 5/16-18 : Set Screw Style Coupling Location Size (Dimension SL) 0. Boot retaining grooves are standard. As this Imperial Woodruff Key Keyway Dimensions Pdf, it ends happening bodily one of the favored ebook Imperial Woodruff Key Keyway Dimensions Pdf collections that we have. Max. NOTE. 2Woodruff Keys. 018: 4: 0 -0. 180 in 29. 19-1997. Keyway Bore Diameter Size Bore Reference -0. 5 times the shaft diameter to ensure a good. Keys and Keyways. 88 mm: Outside Diameter: 4. Keyway Size (W x D) 3/16 x 3/32 in: Length thru Bore: 0. Shaft Diameter. 960 in 125. To use this calculator, input your Torque, Shaft Diameter and Key Length values. The keyway dimensions are also different from the English system. The unit to indicate the sizes of spur gears is commonly stated, as specified by ISO, to be “module”. Square keys. Related: Shaft Arbor and Keyseat Dimensional 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. Keyway Size (W x D) 1/4 x 1/8 in: Length thru Bore: 1. txt) or read online for free. Min. 142 in 29. Imperial Keyway Calculator. Boot retaining grooves are standard. Specification. The dimensions of keys for marine tail-shafts should be hased on shaft diameters obtained by Lloyd's rule. Each tooth’s cutting edge is a few thousandths of an inch larger than the one before. 75 mm:. bearing pressure p = F s / (h/2 微) MPa. SKU. CAD Download Tutorial About CAD-Downloads. or Dia. Keys and keyways are used to transfer torque from shafts to holes or vise versa. The keyway dimensions are also different from the English system. Recommended ANSI Standard Keys and Keyseats Design per. 010 inch, max is provided for offset (due to parallel displacement of keyseat centerline from centerline of shaft or bore) of keyseats in shaft. S. b. 75 in 44. Key dimensions: Parallel keys are most commonly used. Zip/Postal Code *. Metric Rectangular B. 25 and up: Carbon Spring Steel. These are American. all dimensions in inches. 414 Maximum 2. ANSI B17. Clearance Fit Bore Tol. 201 202 1/16 x 1/4 0. 020 0. With the washer in a vice with the split ends free and directly above the vice jaws, a 90 Degree section of the free end is clutched. 64 3. Imperial machine have dimensions listed in imperial units also referred to as the imperial system and are listed as ANSI - ASME standard machine keys. The keyway dimensions are also different from the English system. * 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). Here we can calculate rigid connections, namely the pinned, keyed, splined and flanged ones. NOMINAL SHAFT DIAMETER. 3D Printing & CAD. See dimensions W and h in Figure 1. 3 44 50. - Predrilled for wall mounting. Socket Set Screws Mechanical Properties ASME B18. Two-bearing housings – PD series . 59 £287. 8mm 1. British Standard :BS 46 Part 1 : 1958 Keys and keyways and taper pins. 5000 2. Key Size Hub Keyway Width Depth Over To (Incl. 54Cut precision keyways— these sets include broaches, bushings, and the necessary shims. 99 mm: Keyway Size (W x D) 1/4 x 1/8 in: Length thru Bore (Dimensions LTB1/LTB2) 1. Ring Style Key Cabinet - Holds 90 ring style key tags. 5000 2. 74 in 95 mm: Overall Coupling Length: 4. We also have an Imperial Keyway Calculator. Non standard bores and over the keyways. 1 -1967 (2004) standards for metric and inch unit systems. Flanged housings – FNL series . Wire Gauges: Wood Screw Dimensions: Imperial Tap Chart. Dec. 88 mm: Outside Diameter: 4. 0 degrees (1. b x h width x thck. Coping with foreign bore and keyway standards | Machine Design. Min. +40 0. a. Imperial woodruff keys are measured by their width and diameter, whereas metric woodruff keys are measured by their width and height. MPa. Consumers should consult with suppliers. Nominal torsional stress τ = T/ ( π/16搞 k3 ), d k =d-t 1. com. 15 12 17 5 5 0 / -0. 390 in 9. 120. 97 mm: Outside Diameter: 2. 1 for Js9 Dimensions) Key & Keyway Dimensions – Millimeters Coupling Hub Keyway Dimensions – Inches Shaft Diameter “D” Key Size Nominal. 200 in 55. All dimensions are given in inches. Parallel keys DIN 6885 are only in packing units of 50 pieces for each size and length available. Machine keys are installed in a keyed joint and are typically designed to fail before other components often saving more. Please note that the key sizes in parentheses are older sizes that are no longer commonly used. 492 in 12. Keys: according to DIN 6885. 050" to 60" Standard Material: 12 to 23: Beryllium Copper. (Refer to the description of Econoline fixed center drives on page VSD-14). Keys with greater width tolerance and with deviations greater than the basic size are covered by ASME B18. 3mm 2. Metric. 846. For the calculation, the elastic modulus E and Poisson's ratio ν of the bar should be specified. Woodruff Keys Non Rok Hi Pro Metric and Standard. 1 Retaining screws, jacking screws and spring dowel sleeves for keys are given in Table 2. BS 46 Rectangular Taper & Gib Head KeyWay & Key Dimensions. Metric External Table Chart. Tolerance each on T1 and T2 is . All dimensions given in inches. 000 -0. 27 4. Please note that the key sizes in parentheses are older sizes that are no longer commonly used. 3 30 38 10X8 10 3. Hardware, Imperial, Inch Hardware, Metric, ISO Heat Transfer Hydraulics Pneumatics HVAC Systems Calcs Economics Engineering Electronics Instrumentation Engineering Mathematics Engineering Standards Finishing and Plating Friction Formulas Apps Lubrication Data Apps Machine Design Apps Manufacturing Processes Materials and. M Series keys operate both CORMAX and BEST Standard cores (backward compatibility) with J, K, L and M keyways, allowing for easier management of a hybrid keying solution. Reusable and easy to replace, they are held in in place by a separate locking part. Available in large bow, long blade and long nose key blank, the M Series works with special applications and is designed to enable seamless, phase-in upgrades inKeys and Keyways: Dimension charts for Keys and Keyways: Limits, fits and tolerances calculators: Calculates the limits, fits and tolerances according to ISO 286(2010), ANSI B4. 088 0. 560 in 65. NOMINAL SHAFT DIAMETER BOTTOM. Rexnord Industries, LLC, Coupling Group 427-108 5555 S. Over Width, W Height, H Size, bxh 1 1/4. 35" for the 8-3/4" axle. Shaft Diameter : Keyway (Shaft : Keyway (Hub) Radius r : D:Keyway Sizes. Keyways Index. Gear Products and Suppliers | Gear Knowledge Menu. 95 mmBore Size : 1 1/8 in: Coupling Size: 24 : Set Screw Style Coupling Size (Dimension T) 10-24 : Set Screw Style Coupling Location Size (Dimension SL) 0. 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. 3M. Flanged housings – FNL series . The first is Js9. Available in a variety of sizes and materials including lead-free steel, stainless steel, and high grade aluminum (for low inertia). 22 3. Max. A. Bore with Keyway Pulley (Aluminium, Imperial) 2A - A Section, 2 Groove. 02 mm: Overall Coupling Length: 3. 540 in 89. BS 46 Part 1 : 1958 Square Keys and keyway Dimensions. 83. 02 mm: Overall Coupling Length: 3. 98 mmBrowse QUICK FLEX Standard Hubs with Keyway - Inch (Imperial) Bores in the The Timken Company catalog including Part Number,Description ,Bore Size ,Coupling Size,Keyway Size (W x D),Length thru Bore,CADBrowse D Type with Keyway - Inch (Imperial) Bores in the The Timken Company catalog including Part Number,Description ,Material,Bore A & B,Keyway A & B (W x D),Set Screw Size,Outside Diameter,Overall Length,Bore Depth (Dimension C),Static BreakiBore Size : 1 in: Coupling Size: 42 : Set Screw Style Coupling Size (Dimension T) 5/16-18 : Set Screw Style Coupling Location Size (Dimension SL) 0. 180 in 29. These sizes cater to different shaft diameters and keyway dimensions, ensuring a proper fit for your specific requirements. As noted above, when selecting a keyway tolerance, there are two common selections in the metric system. General. 1) The axle centerline to yoke/universal centerline is 12. All dimensions are given in inches. The U. 240 0. sales@aimsindustrial. Allen wrenches are frequently relatively small and are available in various standard SAE International sizes, including 5/32-inch, 3/32-inch, 7/16-inch, 3/16-inch, 1/18-inch, and 14-inch. 079 0. 390 in 9. Related: Shaft Arbor and Keyseat Dimensional 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. 000 / +0. 3mm 5mm 5mm 5mm 5mm 6mm 6mm 6mm 8mm 8mm 22mm 24mm 16mm 17mm 19mm 20mm 25mm Keyway Width (w) 10mm 3mm 3mm 1. keyway dimensions metric keyways diameter key shaft hub over incl w h width depth tol. You can also drop us a message at [email protected] +0. From £578. 380 in 35. Figure 1. Max. O. 05 mmThe problem with taper keys is that they can cause the center of the shaft rotation to be slightly off of the mating part. 12 4. ΔTo (Incl) 3 1/2 Square and 7 Rectangular key widths. 67 mm:. 90 mm: Overall Coupling Length: 5. clearance fit bores with set screws. clearance fit bores with set screws. Download >> Download Bs 4235 part 1 pdf Read Online >> Read Online Bs 4235 part 1 pdf n9 keyway tolerance imperial keyway dimensions iso r773 keyway dimensions calculator metric keyway dimensions standard keyway sizes in mm bs 46 part 3 bs 46 part 1 22 Feb 1972 Purchase your copy of BS 4235-1:1972 as a PDF. Exposed bolts (E) are the standard design for this coupling, though shrouded bolt (S) designs are available upon request through size 5. Also, T 1 and T 2. The precision SAE sizes are 0. Melting Points. Max. You can even reach our Product Management Department at 847-775-4600 or via email to info. 2-6 Antimony St, Carole Park QLD 4300, Australia Phone +61 7 3271 5424. British Standard :BS 46 Part 1 : 1958 Keys and keyways and taper pins. Table 1 details the appropriate key slot and key sizes for various metric bores. The sizes below 5/16 inch are intended to fit a hole 1/64 inch larger than the pin size; for pins larger than that the pin and hole size are the same. xxxx 0. 2; Thread Shear Area for External and Internal Formulas and Calculator per. WIDTH. Keyway Size (W x D) No Keyway : Length thru Bore: 1. Max. 6-1 and for shafts in Fig. Metric Bore / Keyway per DIN specifications. ΔTo (Incl) 3 1/2 Square and 7 Rectangular key widths. 120. 7 mm, 0. com, and we'll work with you to ensure that we provide you with the exact roller chain sprockets or conveyor chain sprockets that you need. 005 x. A rectangular key is generally used for shaft diameter between 1” (25 mm) and 20” (500 mm) Generally, these have a reduced effect on the shaft due to its shallow keyway depth. 130 in 104. Select your units as required. See dimensions W and h in Figure 1. 19-1997. 00 mm: Nominal Torque N/A 6. WDS 6164. WDS 6165. Shaft Diameter. Note: Broaches have a. Just enter the size of the key and shaft, then click "Calculate". 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 Dimensional Charts are for Metric Taper Keyways, Metric Taper Keys, Imperial Taper Keyways and Imperial Taper Keys. 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). 38 1958. xls Created Date: 1/23/2014 8:35:20 AM. The Econoline fixed center drive uses a driver pulley that is manually adjustable.