recommended in this standard may entail more fitting of keys into keyways than was envisaged in the1953 edition. Nominal. l b l R l b R Both ends round (A) Both ends rectangular or square One end round (C) (B) Figure 3 – End of key Table 1 – Dimensions of parallel keys, mm Nominal dimension of key b x h l Nominal dimension of. 1 for Js9 Dimensions) Key & Keyway Dimensions – Millimeters Coupling Hub Keyway Dimensions – Inches Shaft Diameter “D” Key Size Nominal Keyway Width Hub “W. They also require a guide bushing for producing the keyway. Fit pulley with taper bush on shaft and locate in desired position. Standard Keyways and Setscrews Diameter of Shaft Keyway Width × Depth Setscrew Diameter of Shaft Keyway Width × Depth Setscrew 1/2 - 9/16 1/8 × 1/16 10-24 2 5/16 - 2 3/4 5/8 × 5/16 5/8 * 5/8 - 7/8 3/16 × 3/32 1/4 2. In the absence of specific details, manufacturing will be based upon DIN 6885 - T1. The deviations are less than the basic size. Keyway Sizes. 3 12 8. 0mm to 26. Just to determine what flange and shaft of pump or motor you have, please see below excerpts from the next standards: SAE J744. Keyway chart sizing key machine engineering keyways shaftKey and keyway dimensions (control in motion) Keys & keyways specificationKeyways keys dimensions metric parallel tolerances engineering bs fit figure source 1972. Rectangular-faced keys are used for larger shaft diameters and square keys are used for shafts smaller than 6. Depending on the size of the shaft for the keyway, vise or vee blocks, for a long shaft use both. Key and keyway dimensions (control in motion)Solved question 5: you have been tasked with designing a Gates belts, hoses, and applications: standard & non. Keyway Dimensions. Usual IEC sizes. D. 487 Minimum 2. 4. They have a square or rectangular cross section. This type of shaft has a tighter tolerance, nicer finish, and has been polished. 542. 3mm 2. 375 in. They're sized precisely for a tight fit around pipe, so they're often used to support pipe passing through floors and walls. BS 4235-2:1977, ISO 3912-1977: Specification for metric keys and keyways - Woodruff keys and keyways. 1573The depth is measured from the intersection of the keyseat with the shaft diameter and the depth tolerance is +0. 5000 2. Create a support that fits the exact dimensions of your shaft to brace it along a flat surface. Stainless Steel-Feather keys DIN 6885 are only in packing units of 10 pieces for each size and length available. 2515 0. 0mm to 26. 30)or the cap screws (bush size to 5050)and screw them in, do not tighten them yet. 5 149 71 14 115 5 20055 491610 80 15. 4375 1. Inc. See dimensions W and h in Figure 1. A list of standard keyway and corresponding key sizes for English shafts are listed below in Table 1. Fully threaded, headless screw with a hexagonal drive at one end and a cup-shaped indentation at the other. 4235 : PART 1 : 1972 Parallel Metric Keys and Keyway Dimensions - Roy Mech. 000 -0. ISO/R 774:1969. Our 5/8-inch keyed shaft is made with industrial needs in mind, but there are. 003, the cutter is . Shaft keys, or machine keys, work by securing a rotating shaft to a hub assembly or gear thus transmitting torque from the shaft to a gear or sprocket. 5 . - Series F couplings supplied with 4) All dimensions per AGMA 9002-A86Standard and/or project. EN Standard. 846. To. Engineering Information Taper Metric Key and Keyway Dimensions. 1250 0. 3mm 2. Standard External Metric Thread. by the width and the depth measured from the raduis of the shaft to the center of the keyway. Look it up in Machinery's Handbook or some other shop reference. They may be mildly magnetic. 002 to 0. . Careers; Rino Mechanical Components; COVID. 000. 374" 0. We carry a wide range of products with keyways,. Used to ensure the shaft remains within its bearing, our shaft collars are most often purchased in association with our. Convert output drives from female to male. Phone: (407) 347-3519. Unless otherwise specified, the shaft keyway is assumed to be standard. l b l R l b R Both ends round (A) Both ends rectangular or square One end round (C) (B) Figure 3 – End of key Table 1 – Dimensions of parallel keys, mm Nominal dimension of key b x h l Nominal dimension of. 002, -. The first is Js9. 1260 0. Carbide Straight-Tooth Keyseat End Mills. 1. 03 Notes: Bore tolerances per BS 4500 H7 fit. 4 mm. rad 10 12 4 4 2. Nominal Key Size W x D Min. 120. Max. 003+. 010 / -. A free body dia-gram of the shaft will allow the torque at any section to be determined. Keystock is available in both inch and metric sizes. ANSI Standard Woodruff Key Size Table Chart ANSI B17. Model: 407777. 4 Nm) to a maximum torque rating of 170,004 in–lbs (19209 Nm) and a bore range of . Choose from our selection of DIN 6885A machine keys, including machine key stock, rounded machine keys, and more. Slightly larger than the size listed, these oversized keys offer a tight fit in worn keyways. Metric module, side fit. 424ANSI-B17. A. Standard keyway dimensionsStandard shaft sizes key bushing table qd non bore keys shallow range gates includes specific each also Keyway chartShaft and hub keyway dimensions. js9 widthKeyway dimensions Key and keyway dimensions. This key stock is undersized, so keys will fit slightly more loosely than standard keys and are best for inconsistent keyways. ON REQUEST - b = 14, 16, 18, 20 TECHNICAL INFORMATION - ISO-Fundamental Tolerances (see page A21 ) - Keyway type in the bore and the shaft (see page A16) - Stainless Steel characteristics (see page. 093 / . 4-40. 2500 0. British Standard :BS 46 Part 1 : 1958 Keys and keyways and taper pins. Width b: Depth : Radius R: Nom: Tolerance Class: Shaft t 1: Hub t 2: Normal: Close: Shaft N9: Hub Js9: Shaft & Hub P6:. Imperial systems use inches and feet, and these are the standard units. Keyway Broach 1/16 to 1-1/2 Inch, 2. 12. Standard keyway dimensions tableKeyway shaft drive dimensions key belt double standard system metric solved width been load transcribed text show Keys & keyways specificationKeyway dimensions. To avoid gouging and marring your pipe while making adjustments, these collars have flats where you can grab and rotate the pipe with a wrench. The whole system is called a keyed joint. Choose from our selection of shaft keys, including rounded machine keys, machine keys, and more. size, and number of keys present in the joint. Hex Key Short Key s SPECIFICATION Bushings 3535 thru 5050 Size DIMENSIONS FOR 3535 thru 5050 Size u screws 44,800 1,000 77,300 1,700 110,000 2,450 126,000 3,100 space required to remove bushing using jackscrewsno puller required. Shaft Diameter: Width Height Keyway (Shaft. BS 4235 Pt. 2 Woodruff Key Size Table Chart ANSI B17. Machine Key and Woodruff Key Assortments. ASME B1. 360 Minimum 2. Latest. 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. Shaft: Key: Keyway: Nominal Diameter d: Section b x h : Width Shaft & Hub b: Depth: Radius r: Shaft t 1: Hub t 2: Over: Inc: Nom: Tol. SAE led the way with standardized shafts and mounting flanges in SAE J744. In the absence of specific details, manufacturing will be based upon DIN 6885 - T1. Choose from our selection of 1 7/16" shafts in a wide range of styles and sizes. Lovejoy’s Jaw Type couplings are available in 24 sizes from a minimum torque rating of 3. Title: keyway dimensions. standard shafts and keyways evolvent design web jan 28 2022 shaft diameter inches shaft diameter mm calculate milling broaching custom keyway widths there s always the option of increasing theIn the following example, let’s assume that the actual length of the keyway in the shaft is 8 inches long and 3/8″ deep. For a key to function, the shaft and rotating machine element must have a keyway and a keyseat, which is a slot and pocket in. British ISO Metric Screw Threads Designations. clearance fit bores with set screws. Keyway standard size b2Shape 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 bodyDescription: At Triangle, our shaft collars are manufactured in three standard sizes (5/8”, 3/4”, 1”), but have customizable options for bores and plating. 3mm 5mm 5mm 5mm 5mm 6mm 6mm 6mm 8mm 8mm 22mm 24mm 16mm 17mm 19mm 20mm 25mm Keyway Width (w) 10mm 3mm 3mm 1. Yhis is standaredized. The length of the coupling hub keyway is 4 inches long and it is also 3/8″ deep. d. Check Details. The commonThis topic may be found in Machinery's handbook. Machine keyway to recommended size and tolerance listed per Table 4 on Page 3. All of the measurements listed on the product pages in inches without the keyway width or depth. Setscrews are placed over key at 90˚ to the key unless otherwise specified. Unless otherwise specified, the shaft keyway is assumed to be standard. keyways & keys dimension in accordance with BS 4235-1:1972: Specification for metric keys and keyways - Parallel and taper keys Keyway standard dimensions keyseat pdf printer friendly information. 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. Keyway Bore (inches) Reference Height (d) 1. 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 bodyDescription: At Triangle, our shaft collars are manufactured in three standard sizes (5/8”, 3/4”, 1”), but have customizable options for bores and plating. 750 inch diameter 1. Drawings represent standard TEFC general purpose motors Refer Data Section 502 for various models, OPEN or TEFC *D im e ns oa rf c ly. 3mm 3. Shaft Key Nominal Diameter, d Over Up to and Incl. 5 1. Min. We carry a wide range of products with keyways, including bushings and roller chain sprockets. 3mm 2. These tools are set to the recommended torque values for each screw size. 87 inch. J755_201505. 477 Maximum 2. Below is a reference on shaft diameters and the corresponding keys / keyways according to the prevailing standards. Metric pdffillerWoodruff key cutter size. 0. 003, -. Install these keys in a drilled and reamed hole to locate fixtures and vises on your machine table. 1/16" 3/32" 7/64" 1/8" 5/32" 3/16" 7/32" 1/4" 9/32" 5/16" 3/8" 7/16" 1/2" 9/16" 5/8" Length 0. pdf Gates belts, hoses, and applications: standard & non-standard shaft keyMetric keyway. Reaffirmed. Where the designer conservatively sizes a shaft, then only those calculations necessary to ensure that the shaft complies with this Standard (see Clause 5) are required. Keyway is a recess in the shaft and hub to accommodate the shaft key. 6552 ProductsLock nut, dimensions in accordance with ANSI standard N lock nuts are available in two series: N 00 normal series and N 000 low profile series: MB: Lock washer, dimensions in accordance with ISO standard for a KM lock nut: MBL: Lock washer, dimensions in accordance with ISO standard for a KML lock nut: MS 30Ondrives. = 1. incl. txt) or read online for free. 000 -0. This Standard establishes a uniform relationship between shaft size and key size for parallel and taper keys retaining similar basic sizing as found in the withdrawn B17. J755_200912 2009. 90. Interference Fit Bore Tol. the key is a tighter fit to the shaft so that the key remains on the shaft during assembly and removal. imperial keyways diameter key size (nominal) shaft hub width depth width depthRef. 4mm 1mm 1. 414 Maximum 2. 000 Keyway Width ( w ) Over 1/2" to and including 1" +0. Figure 2 Keyway Sizes. Product data for lock nuts requiring a keyway Consent to Cookies & Data processing. 5020 2. BARR. 5. Shaft Diameter Key Size Keyway Width Keyway Depth Keyway Radius "D" Nominal Hub "W" Hub "T2" "R" Over Thru Width "W" Height "H" Nominal Min Max Min Max Min Max 6 8. Connect two rotary shafts to change a system's speed, torque, and angle. The height of metric keys decreases by 1 mm for every 100 mm of length. The clearance is provided on the keyway in the hub and it's 0. C. The new catalogue 18. Key & Keyway Dimensions – Millimeters Coupling Hub Keyway Dimensions – Inches Shaft. 010 Height (d) (t) - DIM Keyway Width (w) AGMA 9002-A86 Inch Bore and ANSI B17. Nominal key size b × h Applied shaft diameter d Key size 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. Above 5 1/2" diameter the S. Tony, a 1/4" keyway is standard on 1" diameters. ANSI Hardware Deign and Engineering Data. Machining of square shafts with rounded ends (with or without keyways) Other machining available upon request per prints provided (drill, tap, threading) For Keyway MM Dimensions – see the table at. Figure 1. Description: In alloy steel, we have all standard sizes available in stock, ranging from 3/8 inch to 4 inch O. 3750. Dec. 4. 1; Hardware. js9 widthHere's a quick reference guide to common keyway profiles. Consider a 200 hp (150 kW), 1,800 rpm motor. 110 mm to 140 mm – 15 mm step. ). 437 0. Size, bxh 6 8 2X2 8 10 3X3 10 12 4X4 12 17 5X5 17 22 6X6 22 30 8X7 30 38 10 X 8Some of the 405577 may have a 1" shaft and some may have a 1 1/8" shaft. 3mm 3. 438 . 002 -0. 0mm Metric, Standard. One is a broad negative toleranced bar stock and the other is a close plus toleranced keystock. Keyway sizeDimensions standard keyseat keyway shaft shafts diameter nominal Metric key keyway dimensions per iso/r773. bearing pressure p = F s / (h/2 微) MPa. Less maintenance than a chain system when a tube is attached to the drive shaft. In the absence of specific details, manufacturing will be based upon DIN 6885 - T1. Link to this Webpage. 4235 :. Mounting Hole Thread Size. Slightly larger than the size listed, these oversized keys offer a tight fit in worn keyways. 4mm 8mm 2mm 9mm 12mm 11mm 4mm 4mm 14mm 15mm DIN 7154, H7 Metric Bore and DIN 6885, Js9 Square Keyway Tolerances Page 1 of 4 * Groove dimensions for woodruff keys DIN 6888 in accordance with DIN 6885 Sheet 1 (with black clearance). . The pulleys for KPS have the same dimensions as those for the STS standard pulleys. Keyway key parallel jis sizes tolerances 1301 mm 1996 pulley excerpt unit techKeyway metric Table aii-12. n When referencing the Lovejoy UPC number in this table, include 685144 as a prefix to the number shown. Total Height (X) = Depth (Y) = Return to broaching : 2388 State Route 726 Eaton, Ohio 45320 (937) 456-2232 Fax (937) 456-2282. Dimensions of Parallel Keys and Taper Keys. Most likely you have knowledge that, people have see numerous time for their favorite books taking into consideration this Ansi Standard Keyway. Minimum keyseat width is that figure permitting the largest shaft. Standard keyway dimensionsStandard shaft sizes key bushing table qd non bore keys shallow range gates includes specific each also Keyway chartShaft and hub keyway dimensions. Groove dimensions keys DIN 6E-ga Shut 1 (With • 1972. Venkat Dora. 5 2012 10028 248. Unless otherwise specified, the shaft keyway is assumed to be standard. WOODRUFF KEY DIMENSIONS ANSI Key No. As bushing bores approach the maximum recommended diameters, keyway depths are reduced in order to extend maximum bores as much as possible. 1890 0. 597 7/16 . Regardless of which unit of length you're using, you'll need to measure the following: width, height, and length. The collar rests on top of the workpiece rather than being supported from below. HOUR . We can provide keyed shafts in any length up to 20 foot. Ansi Standard Keyway Sizes Pdf is available in our digital library an online access to it is set as public so you can get it instantly. 1 - 1972. 000 Keyway Width ( w ) Over 1/2" to and including 1" +0. MS 340. Threads are American National form, Class 3. About Shaft Key and Keyway. 7 to 36mm sizes. Where: T = D + T2. 0/2=. 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. pdf - Free download as PDF File (. Drive Type Fastenings without Taper Action; Parallel Keys, Keyways, Deep Pattern. For safety purposes, 3-4 factors of safety should be. Specifications Met. The system uses letters and numbers. 095 . ) rules which are commonly used in Australia. Woodruff Keys. Generally speaking square keys are sized to the nearest nominat size to 1/4 the shaft diameter. 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 — Inches Shan 6. A. 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. 050 mm to −0. 612" 0. A. Standard sizes of shaftsStandard sizes of shafts Typical sizes of solid shaft that are available in the market are: diameter increments up to 25 mm 0. MS 340. mowerman33. A list of standard keyway and corresponding key sizes for English shafts are listed below in Table 1. ) Diameter (in. Standard Keyway Tolerances Up through 1/2" +0. 1265 0. “Dimensions and identification code for mounting flanges and shaft ends of displacement pumps and motors”. You will also find. 1 Size Shaft Dia. In this app is useful for key and Keyway size for Shaft. Lengths. Drive Type Fastenings without Taper Action; Parallel Keys, Keyways, Deep. Flat saddle keys. Using equation [1], the minimum shaft size would be: Or, in metric units: To see how much of a safety factor is built into the above equations, substitute 400 hp for the 200 hp power. Standard Keyway Dimensions Shaft Diameter Set Screw Width Depth Up through 7/16" 8-32 3/32 3/64 Over 7/16" to and including 9/16" 10-24 1/8 1/16 Over 9/16" to and including. 005" up to 1/4 and 0. 2515 0. js9 widthKey shaft keyway dimensions keyed. This standard is applicable to couplings as defined in ANSI/AGMA 9009D02, Flexible Couplings - - Nomenclature for Flexible Couplings, with inch bores and keyways. Used to ensure the shaft remains within its bearing, our shaft collars are most often purchased in association with our. Our 5/8" shaft with keyway will serve your assembly well. Mak-a-key step key stock 3/8 x 1/2 x 1 ft type 2 zcStep fixture keys (metric) Metric key steelGates belts, hoses, and applications: standard & non-standard shaft key. ANSI B17. Drawings represent standard TEFC general purpose motors. 000 / +0. ). Check Details. There should be a top clearance between the key and the keyway in the bore. The shaft keyway and hub keyway dimensions according to ISO 6887 - taper keys with gib head - are equal to those in ISO 6886 . Shaft Stresses Standard stress equations can be customized for shafts for convenience. BS 46 Keys and keyway Dimensions-Parallel Rectangular Ref Standard . As bushing bores approach the maximum recommended diameters, keyway depths are reduced in order to extend maximum bores as much as. Then stick a spit tab of paper on top of the shaft at the end. In stock and ready to ship. 010 inch, max is provided for offset (due to parallel displacement of keyseat centerline from centerline of shaft or bore) of keyseats in shaft and bore. A rounded bottom allows these keys to rock in their seat to relieve stress on the shaft caused by vibration or misalignment. Standard Keyway Size Chart. 45mm) to 7 inches (178mm). 2 7-1,2 1. Max. taper dimensions which is 1 in 16 up to and including 5 1/2" diameter. Dimensions and tolerances of metric keyways for parallel keys (source:BS 4235-1: 1972)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. Square Keys preferred for shaft diameters above this line: rectangular keys, below Key 3 3/4 4 1/2 5 1/2 Shaft Key Size Versus Shaft Diameter ANSI B17. Dimensions and tolerances of metric keyways for parallel keys (source:BS 4235-1: 1972) 1) Unless specified by the customer: 2) Actual shaft fit will vary depending on - Series S couplings supplied with actual shaft diameters. BROWSE CATALOG. by Crystal Bemis on August 1, 2022. B +0. 004, -. 3) Keyway fillet radius to be specified by customer. It is a standard type of key. 1M:1985. Choose from our. For dimensions in millimeters, multiply inch values, except thread diameters, by 25. 015. 5 mm 25 t 5025 to 50 mm 101. ASTM Standard. Sizes & Set Screws Wheel Bore or Diameter of *Shaft. 000",. Design of Square Key and Keyway (Wood Ruff) Stress, Shear and Torque. Metric Key Keyway Dimensions _ Engineers Edge _ - Free download as PDF File (. A list of standard keyway and corresponding key sizes for English shafts are listed below in Table 1. Andrew Prestridge | January 26, 2022 Benefits of Standard Keyway Sizes Nearly every shaft diameter has a corresponding standard keyway width and depth. +. 1260 0. Set screws and pins can also work as an alternative to the keyed joint. Keyway size charts can come in both imperial and metric measurements. Shaft And Hub Keyway Dimensions - Bores and Keyways | John King Chains - Wxh key w x t2 keyway british. 3 +0. The keyway dimensions are also different from the English. Background. This Standard covers requirements for square and rectangular parallel keys and keyways intended for both alignment of shafts and hubs, and transmitting torque between shafts and hubs. drujba - Stihl 020 - schema. Typical steels for locknuts are: AISI, C1015, C1018, C1020, C1025, C1035, C1117, C1118, C1212, C1213, and C1215. English. Title: keyway dimensions. 1265 0. 03 0. If you are looking for a comprehensive and reliable source of information on jaw type couplings, you should download the Jaw Type Catalog PDF from Lovejoy, a Timken company. In stock and ready to ship. It also gives the relation to be observed between the diameter of the shaft and the section of the key. Coping with foreign bore and keyway standards | Machine Design. 628 2. 1. We stock pre keyed shafting in many diameters, including metric diameters, with standard keyways. This standard recognizes that there are two classes of stock for parallel keys presently used by industry. The keyway is in the hub. 628 2. Nominal Shaft (Arbor) Keyseat Cutter Hole Diameter: Nominal Size Square Key: Cutter Hole & Keyway. Keyway chart sizing key machine engineering keyways shaftKey and keyway dimensions (control in motion) Keys & keyways specificationKeyways keys dimensions metric parallel tolerances. Keyway width tolerances per BS 4235 P9 fit. Standard keyway dimensionsKeyway sizes and guidelines Keyway chart sizing key shaft engineeringStandard keyway dimensions table. This International Standard specifies the dimensional characteristics of tangential keys and of their corresponding keyways in shaft and hub. DIN 6885/1 :- Definition. Machine Key and Woodruff Key Assortments. Sure! Bobcat engine currently installed is: Model: 405777. 0mm to 26. 4. 048: 0. Shaft Diameter: Keyway Width x Depth: Imperial Sizes (inch. ), keyways and installed set screws. Keyway broach 1/16 to 1-1/2 inch, 2. Appropriate fits can be established for each shaft size and published in a standard. 110 mm to 140 mm – 15 mm step. The following tables show standard dimensions for keys and their grooves. 542. js9 widthHere's a quick reference guide to common keyway profiles. This is aRe-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. When you order KPS pulleys, please use the designation for STS pulleys. ANSI B17. Socket Sets. 7505. 3mm 2. See dimensions W and h in Figure 1. Dimensions standard keyseat keyway shaft shafts diameter nominal Keys & keyways specification Keyway standard chart metric broach pdf charts broaches std Standard. As the key is inserted inside the keyway between the shaft and the hub, its portion gets sheared by both shaft and hub. 03 0. This key stock is undersized, so keys will fit slightly more loosely than standard keys and are best for inconsistent keyways. C +0. Key step keystock daemar sk typeMetric keyway sizes. Coupling Length: 11. 5 times the shaft diameter to ensure a good load. 7505. It fits perfectly in the pulley, but the keyway in the motor shaft is only about 2. Shaft diameters are listed for identification of various key sizes and are not intended to establish shaft dimensions, tolerances or selections. I searched for this couldn't find anything. Standard keyway dimensionsStandard keyway dimensions table Transeals keyway chartStandard bore. ANSI B17.