Our tool holders designed to work exclusively with duMONT Stock Keyway and Slotting Inserts are heat treated tool steel, hardened to 58/60 HRC at the Insert seat providing resistance to deformation and longer tool life. Material options include alloy steel, aluminum, brass, copper, plastic, steel, and stainless steel. Cut keys to custom lengths. DAV SYSTEMS SRL. The Keyway dimensions are also different from the English system. Their rounded ends also make it easy to slide gears, hubs, and other components into place. gear and pulley keyways, keyways, rifling, and all hole configurations. O. Metric – Rectangular B. Keyway toleranceKeyway-and-key-size-dimensions. Metric keyways are dimensioned by width and depth as measured from the radius of the Shaft to the center of the Keyway. Keyway Broaches. Keyway Broaches. We are also fully equipped to. 8. Keyway Dimensions. The keys and keyways followed the recommendations of ISO R773:1969 and shaft tolerances followed ISO R775:1969. FOREWORD [The foreword, footnotes and annexes, if any, in this document are provided for informational purposes only and are not to be construed as a part of ANSI/AGMA 9002-C14, Cylindrical. Use the keyways with machine keys to transmit torque to gears, sprockets, and other keyed components. Shaft Keys fit into slots cut into a shaft and a component such as a pulley or sprocket creating an assembly that rotates as one unit. Use them on soft surfaces such as. All keyways are accurately machined and straight with no bowing or twisting. Designed for aligned shafts, the 2-Piece Clamp-Type Coupling makes two shafts function as one. The sets also contain keyway shims for controlling the. INTRODUCTION — The general practice in industry is to supply coupling hubs without fillet radii in the keyway corners to permit the use of standard commercial keys instead of keys with chamfered. Ref Standard . Non standard bores and over the keyways. Gear Products and Suppliers | Gear Knowledge Menu. Keyway misumiKey and keyway dimensions. keyway depth to be determined by journal diameter & width specified per ansi b17. Clearance Fit Bore Tol. But ensure the weakened shaft can support the load. Serves aerospace, automotive, medical, government, and education. Broaches are for use in hand and hydraulic arbor presses and are great for maintenance and short-run production operations. Non standard bores and over the keyways. From £560. Pds Fire Door Slow. How are keyways measured? Metric keyways are dimensioned by width and depth as measured from the radius of the shaft to the center of the keyway. keyways /keys dimension in accordance with BS 4235-1:1972: Specification for. pdf Gates belts, hoses, and applications: standard & non-standard shaft keyMetric keyway. Materials include cast iron, aluminum, plastic, and duroplastic. Size is clearly marked on each piece. SAP Material Number: 4090572: ISO Catalog Number: F3AU0970ADK38: ANSI Catalog Number: F3AU0970ADK38: Grade: KC643M: Adapter Style Machine Side: Straight-CylindricalKeyways will be furnished with P9 width tolerance only upon request. 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. , New Berlin, WI 53151-7953 March 2015 (PDF. Cut it to length to create the machine key you need. 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. Factors. The key prevents relative rotation between the two. 0mm metric, standardShaft standard key sizes rectangular gates keys diameters most non std readily available Chart keyway torqueKeyway metric key dimensions standard keyways keys bores shaft hub depth iso diameter engineering table edge width millimeters. Standard Metric Keys & Keyways for Metric Bores with One Key • Couplings All Types (Page 1 of 2) Metric Key & Keyway Dimensions Per ISO/R773 – Js9 Width Tolerance Key & Keyway Dimensions – Millimeters Falk Coupling Hub Keyway Dimensions – Inches Shaft Diameter “D” Key Size Nominal Keyway Width Hub “W” Keyway Depth Hub “T2. If two setscrews are ordered, the second setscrew is 90º clockwise from the first. Referencing Figure 1, the Metric key size is W x T. I've selected a shear strength = S s = 200 MPa, and a compressive strength = S c = 130 MPa. AHC-10000. The keyway dimensions are also different from the English. Winco Keyed Shafting avoids the expense of cutting keyways, removing costly production delays. Key Size. 1, the Metric key size is W x T. Set the anvil over the keyway and measure down it keying a shaft, and using a standard mic if keying a bore. The following standard containprovisions which, through reference in this text, constitute provisions of s this American National Standard. Because they're usually shorter than. pdf), Text File (. Save 66%. Woodruff keys are semicircular, fitting partly into A*B circular segment keyway with the remainder fitting into a longitudinal slot keyway in the mating part. QTY: Add to Cart. Shaft coupling shaft hole additional modification serviceTaper keyway keyways gib roymech diameter bs radius Keyshaft keyed shaft, diameter 1 7/16 in, keyway 3/8 in x 3/16 inKeyway metric. PRECISION 12940 at. keyway dimensions metric keyways diameter key shaft hub over incl w h width depth tol. Width. 90 £49. We also stock a variety of keyway bushings to allow. Width Depth Radius Size Over To/Incl. Email This Page Download PDF Printable Page. . Each tooth’s cutting edge is a few thousandths of an inch larger than the one before. S. Keys standard metric keyways mechanicalMetric keyway shaft depth reference dimensions diameter iso r773 width Metric woodruff keys are supplied to din 6888 / iso 3912 in c45k keyKeyway metric dimensions keys. They are also often used on tapered shafts. Cross-section of a parallel keyed joint. 95. They are used on compatible Davis keyseating machines. True metric keystock that conforms to metric keyway specificationsNew Berlin, WI 53151-7953 March 2015 (PDF revision) Telephone: 262-796-4060 Fax: 262-796-4064 Supersedes 07-2006 Standard Metric Keys & Keyways for Metric Bores with One Key • Couplings (Page 2 of 2) All TypesThe keyway broaches are offered in A, A1, B, B1, C, C1, D, D1, E, E1, F, and F1 styles. In this section. Stay organized and be prepared with these popular sets. Also calculated are the overall measurements for shaft and bore, as well as the chord height. W is the key width. British Standard :BS 46. Keyways (Metric) Results 1-6 of 6 < Previous Page 1 Next Page > Results per page: Name. Dumont #70 17 Piece 26 Combo HSS Metric Keyway Broach Set - 44498 - 30-600-070. Key and Their Corresponding Keyways 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 body2 web standard key and keyway sizing figure 1 describes the dimensions used when specifying english and metric keys and keyways english dimensions keyway w x t 1 key. Metric key keyway dimensions per iso/rtt3 js9 widthStandard and metric keyway broaches Gates belts, hoses, and applications:. 50 £122. $119. Both are in the bottom of one of my roll-aways. Read more on how keys and keyways work and what types are available – Keys and Keyways. Keyway size. We can provide keyed shafts in any length up to 20 foot. We use keyed shafts in the gear and shaft assemblies in general. All 8mm Pulleys. Keys are made of steel. Woodruff Keys. rad 10 12 4 4 2. 93. Company. Rebrisbol Keyway Broach Sets 6Pcs HSS Metric Industrial Tools for Lathe, Keyway Size A - 2mm, A - 3mm and Collared Bushings 6A, 8A, 10A . 17656-3 Shaft and Hub Keyway and Key Sizes Keys connecting shafts to pulley hubs are commonly used to achieve reliable no-slip power transmission in belt drive systems. Metric keyways are dimensioned by width and depth as measured from the radius of the shaft to the center of the keyway. 46 : PART 1 : 1958 Imperial – Square B. No welding required. Added on. 6002 set contains: 4 x LOM series broaches sizes 4, 5, 6 and 8mm, 9 x. 99. BS 46 :1958 Parallel Keys and Keyway Dimensions; BS 46 :1958 Square Keys and Keyway Dimensions; Factors realting to. 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. In the Metric system it is common practice to specify the key size. thck Nom Free Normal Close/Int - - - -. 2 Normative references . "A" series broaches require" A" series bushings, etc. Eliminates need for complete shaft replacement. Linguette - sedi per alberi. Marlco keyway broaches litecut metric L3M broach style. Type. Eliminates need for complete shaft replacement. Brass is softer than other metals, so it's often used for shear keys. Here's t. 92. metric keyways, metric bores with inch keyways, metric bores with metric keyways, or shaft keyseat tolerances. Category. Built to Last. inch bores with metric keyways; metric bores with inch keyways; metric bores with metric keyways; or shaft keyseat tolerances. 8mm 2. SIZE: 18mm. Print Menu. A radius transition between the floor and wall increases the component’s durability, preventing cracks from stress peaks. BS 4235-2:1977, ISO 3912-1977: Specification for metric keys and keyways - Woodruff keys and keyways. Imperial woodruff keys are measured by their width and diameter, whereas metric woodruff keys are measured by their width and height. Superior holding power over set-screw type couplings. Metric Key & Keyway Dimensions Per. 1 Retaining screws, jacking screws and spring dowel sleeves for keys are given in Table 2. 70 Metric Hss Keyway Broach Set, 4 mm, 5 mm, 6 mm and 8 mm Keyway Size, Style B and C, 5100-0070. Free returns are available for the shipping address you chose. Keys and key stock are small metal bars or wedges that fit between an output shaft and the hub of a pulley, gear, sprocket, or other rotating component. I can't find one for metric as all my book are for imperial. Our Pull-Type Keyway Broaches are ideal for applications in high volume production pull-type machines. Key (engineering) In mechanical engineering, a key is a machine element used to connect a rotating machine element to a shaft. This British Standard has been approved by The Mechanical Engineering Industry Standards Committee. Also known as half moon keys. Use as is to make shaft smaller. Available in 303 stainless steel or black oxide steel with bore sizes from 8mm to 50mm. 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. Mechanical & Motion Systems. Downloads. keyway actual location across flats. Keyway (Hub) Radius r. Hassay Savage 22 Piece 36 Combos HSS Fractional Keyway Broach Set #E-10 - 15315. Using the G9774 18-Piece HSS Keyway Broach Set is the quickest and easiest way to produce a keyway. 4mm 1mm 1. 19-1997 American National Standard Keys and Keyways. Note: its difficult to tell from the drawing but the depth of metric keyways is typically dimensioned from the tangent of the shaft surface. Company. Scribd is the world's largest social reading and publishing site. 0mm Metric, Standard. keyway (bs 4235 - part i) Description. The inch and metric dimensions here correspond to common values. You can readily employ these keyway broaches on steel and also on various ferrous and non-ferrous materials, including plastics, cast iron, and others. Fillet radii comply with AGMA 9002-A86. Inch. Corresponding Keyways-- ISO R775 (withdrawn 1998), Cylindrical and 1/10 Conical Shaft Ends-- ANSI/AGMA 9002--B04, Bores and Keyways for Flexible Couplings (Inch Series) The intent of this document is to offer designers and users of flexible couplings preferred dimensions, tolerances and fits for metric bores and keyways. Standard and metric keyway broachesGates belts, hoses, and applications: standard & non-standard shaft key Keyway-and-key-size-dimensions. Fully metric, including clamp screws; Mate two shafts with zero backlash; Keyways provide added torque capacity and fixed shaft phasing; Keeps one shaft in place while the other is moved or changed; Smooth bore protects shafts from damage; Designed for aligned shafts, the 3-Piece Clamp-Type Coupling makes two shafts function as one. In closed keyways, these keys won’t slide along the shaft. You may also refer detailed information on British Standard Metric Keys and Keyways. This British Standard is the first of a series for metric keys and keyways and has been prepared under the authority of the Mechanical Engineering Industry Standards Committee. 005, -. 2 Broaches and 6 Bushings = 12 Keyway combinations. Is there a standard for setscrew (grubscrew) over keyways for metric. Marlco keyway broaches litecut inch L0 broach style. Unless otherwise specified, the shaft keyway is assumed to be standard. MSC Industrial Supply Co. For example: a keyway. Silicone Rubber Sheet,Heat Resistant, Heavy Duty,High Grade 60A,12 x 12 Inch, 1/8 Inch Thickness for DIY Gaskets, Pads, Seals, Crafts, Flooring,Cushioning of Anti-Vibration, Anti-Slip. 774. The height of inch keys decreases by 1/8" for every 12" of length. depth. Metric Key & Keyway Dimensions Per ISO/R773 – D10 Width Tolerance ‡ Key & Keyway Dimensions – Millimeters Coupling Hub Keyway Dimensions – InchesBritish Standard Metric Keyways for Square and Rectangular Parallel Keys 11 5/16 3/8 7/16 1/2 3/4 3/4 7/8 Nominal Diameter, d 6 1/2 7 1/2 9 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. 4. Mill specific holes or keyways in the hub to meet your specifications or weld in place. Unless otherwise specified, the shaft keyway is assumed to be standard. , depending on the lock nut size: Mating shaft threads (recommendation) KM/KML Metric thread, 6g: ISO 965-3 HM/HME. Shaft Diameter : Keyway (Shaft : Keyway (Hub) Radius r : D: Width:Square Steel, Metric. KeyWay /Key Dimensions. 1Woodruff keys work well near shaft shoulders, where a standard open keyway would create too much stress. WDS 6063. Keyways. Our keyed drive wheels are engineered to withstand demanding industrial applications. 994 products. With and without keyway. . (Page 2. Metric key keyway dimensions per iso/r773. Imperial (inch) keyways are typically dimensioned from a chord line that intersects the keyway sides and the shaft surface. Partially Keyed Rotary Shafts. 3) Keyway fillet radius to be specified by customer. MISUMI. T. Keystock. 70 Metric Hss Keyway Broach Set, 4 mm, 5 mm, 6 mm and 8 mm Keyway Size, Style B and C, 5100-0070 . Depending on the slot width tolerance, the following fit or seating results in combination with the parallel key:Rebrisbol Keyway Broach Sets 6Pcs HSS Metric Industrial Tools for Lathe, Keyway Size A - 2mm, A - 3mm and Collared Bushings 6A, 8A, 10A 4. PFEIFER INDUSTRIES, LLC. Lead Time Reduction. Share Share this awesome question with your friends. of Teeth Minimum Length of Cut (Inch) Maximum. Interference Fit Bore Tol. Thru. shaft to the center of the keyway. Well suited for use in a variety of ferrous and non-ferrous. Figure 2 Keyway Sizes. D1-Style Broach for 12 mm Wd. (Dimensions comply with DIN 6885/1) † Requires use of chamfered keys. Keyshaft keyed shaft, diameter 1 7/16 in, keyway 3/8 in x 3/16 inKeyway parallel keyways metric t2 wxh bores Keyway keyed keyways boresGates belts, hoses, and applications: standard & non-standard shaft key. TruKey® Shafting from Keystone is designed to provide the straightest, most accurate keyed shafting, in the industry. Standard keyway dimensionsKeyway chart Keyshaft keyed shaft, diameter 1 7/16 in, keyway 3/8 in x 3/16 inKeyway slot key shaft. Woodruff keys, identifiable by their half-moon shape, are measured two ways depending on if it is an imperial or metric key. 3D Printing & CAD. (figure 2) keys are made of varied types of materials, and also come in different shapes and sizes. Keyway Width. DAV SYSTEMS SRL. The Tool Holders designed to work exclusively with duMONT Stock Keyway and Slotting Inserts are heat treated tool steel, hardened to 58/60 HRC at the Insert seat providing resistance to deformation and longer tool life. See ANSI/AGMA 9112--A04 for metric bores with metric keyways. METRIC KEYSTOCK. Specification. Rachel Ingram. Moorland Rd. 10-24. The whole. BN 21050 3575603 wedge anchor M8x50. They include the required shims to ensure full keyway depth. They have an alternating right- and left-hand tooth style for removing more material at high speeds than straight-tooth keyseat cutters. They are designed to connect two dissimilar sized shafts in virtually any combination up to a 50 more. The main advantage of the Woodruff key is the elimination of milling near. Bores are available in inch and metric diameters. This makes certain shaft keys – like Form A keys – match. 4mm. Use as is to make shaft larger. Get it as soon as Tuesday, Sep 12. Metric Broach Shims Broach Size Shim Thickness (Inch) Code 3 A 0. Metric Woodruff Keys are semicircular keyways used to lock rotating elements onto shafts. Marlco keyway broaching guides litecut metric to suit L0M broach. How deep do you cut a keyway? Milling of keyway Layered milling is to cut the keyway layer by layer, the depth of each operation is only 0. Keyway width P9 tight fit (standard design) JS9 or N9 loose fit (requires written agreement) see also. 6001 set contains: 3 x LOM series broaches sizes 2, 3 and 4mm, 5 x guides for diameter 6, 7, 8, 10 and 12mm, 4 x shims 1 x 0. 6 - 8 - 10 - 12 - 14 - 16 - 18 - 20 - 22 - 25 - 28 - 32 - 36 - 40 - 45 - 50 - 56 - 63 - 70 - 80 - 90 - 100 - 110 - 125 - 140 - 160 - 180 - 200 - 220 - 250 - 280 - 320 - 360 - 400. 1, the Metric key size is W x T. 000 -0. Shallow keyway depths must exceed 2/3 of the full keyway depth of the square keys shown above. Standard Metric Keys & Keyways for Metric Bores with One Key. BS ISO 4156:2005_1: Straight cylindrical involute splines. 6 8 10 12 17 22 30 38 44 50 58 65 75 85 95 110 130 150 170 200 230 260 290 330 380 440. the offered imperial sizes are close enough for the metric thicknesses. Inch: 554. You may also refer detailed information on British Standard Metric Keys and Keyways. We often cut keyways in the ID of many of our parts. Forrest Addy Diamond. Width. When broaching in multiple passes, shims are necessary to ensure full keyway depth. The most common metric keyway combinations for small keyways and bores All broach sets are furnished in handsome varnished boxes, and come complete with precision broaches, slotted bushings, and necessary shims. Moorland Rd. Note: Tables of the various factors and design strengths are found on webpage. 82. 8 10 12 17 22 30 38. Note that aluminum is also available for lighter-duty applications. 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 Keyway metricFalk_metric_key_keyway. 3 Preferred length and weight of keys Preferred length and weight of keys is given in Table 4. Metric Parallel Keys available with radius and/or square ends. . Keyway Chart. 50mm x 50mm ; 75mm x 75mm ; 100mm x 100mm ; 125mm x 125mm ; Plastic Color Coded Slotted Shim. Standard Keyways: (Used on all of our shafting) “Plain” Shafting available on all Steel grades. Total Height (X) = Depth (Y) =. Metric or inch keyways can be selected with the modification symbol. Standard Metric Keys & Keyways for Metric Bores with One Key • Couplings All Types (Page 1 of 2) Metric Key & Keyway Dimensions Per ISO/R773 – Js9 Width Tolerance Key & Keyway Dimensions – Millimeters Falk Coupling Hub Keyway Dimensions – Inches Shaft Diameter “D” Key Size Nominal Keyway Width Hub “W”. txt) or read online for free. Lock pulleys and gears securely with these woodruff keys Read More. . Bore sizes range from 3/8” to 3” and 8mm to 65mm. These fits andThis item: Accusize Industrial Tools No. Made of solid carbide, these keyseat cutters are harder, stronger, and more wear resistant than high-speed steel for the longest life and best finish on hard material. 6. Shims for Keyway Broaches. 45 3 In Stock * UOM : EA. Cut it to length to create the machine key you need. (Dimensions comply with DIN 6885/1) Requires use of chamfered keys. Metric Key Keyway Dimensions. Just enter the size of the key and shaft, then click "Calculate". Detailed width tolerance information is best drawn from the manufacturer. Use them to connect gears and other components with tapered keyways to shafts. In stock and ready to ship. 3D Printing & CAD. SKU. Keyways provide added torque capacity and fixed shaft phasing. pdf. 22 Piece Keyway Broach Kit Metric Size Metalworking Tool Bushing Spacer Set Bushing Metric Size 4mm B1, 5mmB1, 6mm C, 8mmC Broach with Tool Box, 13 Piece Bushing and 5 Piece Spacer Metalworking Tool. Key dimensions: Parallel keys are most commonly used. See ANSI/AGMA 9112-B14 for metric bores with. Where a key is to be used it should be parallel and side fitting with top clearance. RoyMech Resources Keyways Taper Square Metric Key and Keyway Dimensions These Pages include various standards. 19-1997; Shaft Arbor and Keyseat Dimensional. 4. Metric External Table Chart Thread Designations Sizes M 1. S. 1-1967, R1989) Metric Square & Rectangular Parallel Keys & Keyways (B. Keyway Sizes Broach Style Bushing Diameters (bore sizes) 5/ 8 E23 8, 21 2 8, 3/ 4 E24, 27 8, 3 EDP No. For more information, contact our sales department at 906. Check Details. This is a +/- band clearance; the value of the. tolerances and fits for metric bores and keyways. huyett. Metric is measured width x height x length. Here, you can find detailed information about these machine elements. The flat saddle key is a taper key that fits into a keyway in the hub and is flat on the shaft. Metric. You can think of them as being Internal (Holes) or External (Shaft) features. This key stock is stepped to match repaired keyways in shafts or gears. Size is clearly marked on each piece. Corresponding Keyways-- ISO R775 (withdrawn 1998), Cylindrical and 1/10 Conical Shaft Ends-- ANSI/AGMA 9002--B04, Bores and Keyways for Flexible Couplings (Inch Series) The intent of this document is to offer designers and users of flexible couplings preferred dimensions, tolerances and fits for metric bores and keyways. Step-Up Shaft Adapters with Keyways. Hand wheels are available with no handles, or with fixed, revolving, or fold-away handles. Coping with foreign bore and keyway standards | Machine Design. Since they fit more loosely than standard keys, these undersized keys are best for uneven keyways or when you. 002 to 0. See more at: the process of using SOLIDWORKS feature library to drop keyway cuts on shafts and also inter. ISO 2492:1974 Thin taper keys with or without gib head and their corresponding keyways (Dimensions in millimetres) $26. Metric Spur Gears - One Type of Cylindrical Gears. Added on. • Keyways available in diameters from ½" to 4-1/2" • Metric Diameters from 6mm to 125mm • Keyways available in diameters from 10mm to 65mm. Keyway broach sets hevicut metric H5M broach style. 00. 1, the Metric key size is W x T. Table 1 details the appropriate key slot and key sizes for various metric bores. The second is a P9. Keyway (Hub) Radius r. 42Rounded keys fill oval keyways completely, reducing stress on the key and shaft. 4. BS 5686:1986, ISO 14-1982: Specification for straight-sided splines for cylindrical shafts: metric nominal dimensions, tolerances and gauging requirements. Straight keys, with a square or rectangular cross section, are the most common type of key. Height. Also known as sine keys. 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 1. 3. Carbide Staggered-Tooth Keyseat End Mills. • Keys DIN 6885 → Page 842. Metric Stainless Steel Nylon-Tip Set Screws. Nominal. BS 46 Square Taper Keyways. Dimensions 3. Keyways (Metric) Results 1-6 of 6 < Previous Page 1 Next Page > Results per page: Name. Offered in 2 to 45 in. Standard Metric Bores And Keyways DATA SHEET DS103 REV. apply to Holes or Shafts. Metric: W x H Key W x. 2 Keyways Dimensions for keyways are given in Table 3. Cut this stock to length to create the machine key you need. Supplied complete with the necessary shims to cut keyways to standard depth. (Dimensions comply with DIN 6885/1) †† Requires use of chamfered keys. Keyed double wide collars can be used as short rigid couplings in space constrained applications and benefit from increased torque capacity from the keyway. 0000 /-. FREE delivery Nov 27 - 30 . A keyway is a slot that is cut on a gear, pulley, or shaft which covers the other half of the key projecting out of the shaft in which it is seated.