As noted above, when selecting a keyway tolerance, there are two common selections in the metric system. BS 46 Part 1 : 1958 Square Keys and keyway Dimensions. 60 mm to 100 mm – 10 mm step. The designation of dimensions of taper keys and keyways are shown in Figure 4 and 5 respectively and are defined as follows: b – the cross-sectional width of the key h – the cross-sectional height of the key h1 – height of the gib head l – length of the key b1 – width of keyway for the shaft b2 – width of keyway for the hubKey (engineering) In mechanical engineering, a key is a machine element used to connect a rotating machine element to a shaft. EN Standard. 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. He explains that for specifying keyways, it must be noted that there are very well established standards for dimensions, which can be found in Machinery’s Handbook, or ANSI B17. There are five main types of shaft keys: sunk, saddle, tangent, round, and spline Sunk Keys Rectangular & square keys. Eliminates need for complete shaft replacement. Keyway broach 1/16 to 1-1/2 inch, 2. The hub keyway is dimensioned by its width and depth on the shaft – keyway sides. Many keyways are milled directly into a shaft or broached into the corresponding bored holes. In stock and ready to ship. pdf. The Stafford Manufacturing Corp. Key width: 45mm. Where a key is to be used it should be side fitting with top clearance. Nominal dimension of key b x h. Tapered Gib Keys. R R Cutter Run-out. See ANSI/AGMA 9112--A04 for metric bores with metric keyways. The standard sizes of machine shafts are up to 25 mm with a 5 mm step. They are called “keys” because they lock a component to the shaft by means of a corresponding keyway in a shaft. We carry a wide range of products with keyways, including bushings and roller chain sprockets. Nearly every shaft diameter has a corresponding standard keyway width and depth – this calculator helps you find it. Keyway-and-key-size-dimensions. If the enduser is using oversize plated keystock, then the properly centered keyway is more important. Recommended ANSI Standard Keys and Keyseats Design per. The key length should be less than about 1. 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. I would specify location tolerances separately on the length of your first keyway, and on the width and length of your second keyway. 001 TIR, allow for the attachment of gears,. clearance fit bores with set screws. BS 46 Rectangular Taper & Gib Head KeyWay & Key Dimensions All Dimensions in inches. A key is a machine element that is used to join a rotating machine element to a shaft. 020 0. js9 widt. Keyway Cutter Hole Keyway Dimensional Data for MIlling Centers and Arbors - ANSI/ASME B94. A list of standard keyway and corresponding key sizes for English shafts are listed below in Table 1. D (Ø) Overall Length (mm) Body Material. This is a ± band clearanceProblem that I see is that the bush is going to allow the key to "work" side to side, and to use a technical term, "waller" out the keyway, probably the shaft keyway. Height. 13. Transmission shafts standard sizes or lengths (according to steps). Tapered Gib Keys. The table above shows the dimension of the keyway / keyseat for each available hub bore diameter. Undersized Machine Key Assortments. Undersized Key Stock Assortments. The key and key seat cross section are ISO standardized. Gates belts, hoses, and applications: standard & non-standard shaft keyKeyway shaft keyways metric bores mechanical wxh shapes Keyway chart shaft sizing engineeringShaft and hub keyway dimensions. pdf Gates belts, hoses, and applications: standard & non-standard. A rounded bottom allows these keys to rock in their seat to relieve stress on the shaft caused by vibration or misalignment. still see lots of ordinary keyways in bigger shafts. 5000 2. British 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. Made of carbon steel, they have high strength and are better than plastic gears and gear racks for high-load, high-speed, and heavy duty applications. You are here: Home > Knowledge Base > Standard Keyway Dimensions. (a) end-milled or profile keyway; (b) sled-runner keyway Fig. It also gives the relation to be observed between the diameter of the shaft and the section of the key. Keyway/slot on shaft Keyway/slot on shaft pedrof (Mechanical) (OP) 20 May 14 13:03. Transeals - Keyway Chart. Author: Melyssa Kotecki Created Date: 4/29/2019 2:23:20 PM. ANSI/AGMA 9002-A86 was based upon the design criteria related to bores and keyways in coupling hubs that had evolved over many years of successful industry. We stock pre keyed shafting in many diameters, including metric diameters, with standard keyways. Appropriate fits can be established for each shaft size and published in a standard. 000 Standard Setscrew Locations If one setscrew is furnished the location. We stock pre keyed shafting in many diameters, including metric diameters, with standard keyways. 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 ShanScenario: The exposed round shafts are completely smooth and have no bolts, holes, or keyways. A capital letter refers to the hole size and lower-case letter refers to the shaft size. 19-1997; Design of Square Key and Keyway (Wood Ruff) Stress, Shear and Torque; Parallel Key. This specification includes index tolerances for multiple keyways. The standard dimensioning of the keyway is like above. ANSI B18. (2000+HP) shafts had their keyways worn to the point the shaft needed to be turned from solid 4140 anew. Schlage Keyway Types. 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. 5000 2. 94 inch. MISUMI. This specification includes index tolerances for multiple keyways. Machine keys – also called shaft keys or key seats - are removable machine elements installed between shaft key seats and hub keyways to transmit torque in power transmission assemblies. Keyway dimensionsKeyway sizing chart Metric stepper motor shafts size data tableMetric key keyway dimensions per iso/rtt3 js9 width. BS ISO 4156:2005_1: Straight cylindrical involute splines. This type of shaft has a tighter tolerance, nicer finish, and has been polished. Check out our shaft keyway size chart as well to help you identify your needs. Orthwein [4] suggested a designStandard keyways provide added torque capacity and fixed shaft phasing. Metric Shaft Size Keyway Width Keyway Depth Stock Lengths 5/8" 3/16" 3/32" 13mm: 5mm: 2. Clearance Fit Bore Tol. Keyway size charts can come in both imperial and metric measurements. 1250 0. It wedges the keyThe USA standard recommends maximum stress concentration factors up to 2. 219 (c) (5) (i) The basement, tower, or room occupied by transmission equipment is locked against unauthorized entrance. Standard keyways run full length. Common keystock materials include steel, stainless steel and plated with zinc and are supplied in standard lengths of 12” & 36″ lengths. The dirncnsions of tangential keys and keyways shall be as given in Table 7. A Key goes into the Keyway to lock things up. NOMINAL SHAFT DIAMETER BOTTOM OF SHAFT TO BOTTOM OF KEYWAY WIDTH. Shaft Arbor and Keyseat Dimensional Data American National Standard Keys and Keyways. Width b: Depth : Radius R: Nom: Tolerance Class: Shaft t 1: Hub t 2: Normal: Close: Shaft N9: Hub Js9: Shaft & Hub P6:. 2. Only informative sections of standards are publicly available. all dimensions in inches. There are tables for this in "Machinery's Handbook". Rectangular or square parallel keys and their corresponding keyways (Dimensions in millimetres) 95. 38 2. DIN 6885/1 :- Definition. DIN 6885/2 Keyways d b P9/JS9 Hub keyway b P9/N9 Shaft keyway h t1 = d + t2 t2 t3 = d - t4 t4 11 4 4 4 12. Since they fit more loosely than standard keys, these undersized keys are best for uneven keyways or when you need to disassemble parts frequently, such as during maintenance or prototyping. 015/-0. 000 / +0. 015. New diameter sizes (13, 16, 17, 18 and 22) are added for h9 tolerance types. 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. 5020 2. ASME standard B17. The first is Js9. 1. Coupling Diameter: 6. Specification for metric keys and keyways –. 6. Stocked in: Steel; Stainless Steel; Specifications. W x T2 Keyway ISO Standard — mm Snart Dlameter WI dth Groove dimensions keys DIN 6E-ga Shut 1 (With • 1972. 000 +. 25. Keyway misumiKey and keyway dimensions (control in motion) Keyway sizing chartMetric key keyway dimensions. 018 0RoyMech Resources Keyways BS 46 :1958 Parallel Keys and Keyway Dimensions These Pages include various standards. If the enduser is using oversize plated keystock, then the properly centered keyway is more important. 1875 0. The gib head makes them easy to remove when parts need to be taken apart frequently, such as for maintenance or prototyping. 2. 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. D,d Depth. Keyless hubs are often specified for high speed applications to improve the balance of the assembly and to secure the hub to the. 260". Keyway is not made for holes of less than 12 mm. benmychree John York. Because they're usually shorter than. Shaft Dia. Figure 2 — Types of key and position of keyway in shaft 18 Table 1 — Rectangular parallel keys, keyways and keybars 4 Table 2 — Square parallel keys, keyways and keybars 6 Table 3 — Rectangular taper keys and keyways, gib-head or plain 9 Table 4 — Square taper keys and keyways, gib-head or plain 10 Table 5 — Woodruff keys and keyways 12 1) Unless specified by the customer: 2) Actual shaft fit will vary depending on - Series S couplings supplied with actual shaft diameters. 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. 0000 /. Mechanical & Motion Systems. For a key to function, there must be a keyway on the shaft and a keyseat on the rotating machine element. Keyway Bore (inches) Reference Height (d) 1. D. This is useful when the hub/pulley has to slide axially on the shaft to. Where can I obtain a copy of the metric standards?. To create a keyed joint, a key is used that fits between slots manufactured into the two parts being joined. Functional key length: 267,5mm (= length - (0,5x width)) Shaft material S355J2G3 (St52. The saddle keys are classified into two types, they are. A shaft narrower than the applicable shaft diameter should not be used. To learn how your data will be used, please see our privacy notice. Or clamp the machine to a flat surface, and you can cut motor mount slots. 1 - 114. Technical Data: rated torque from 10 - 800 Nm shaft diameter from 5 - 72 mm. Hub keyway b* P9 / N9 / H9 Shaft keyway h t 1 = d + t 2 t 2** t 3 = d – t 4 t 4 6 2 2 2 7 1 +0,1 4,8 1,2 +0,1 7 2 2 2 8 1 +0,1 5,8 1,2 +0,1. 18 1. Definition of shaft Standard shaft sizes Standard shaft materials Design of shaft based on strength 8. Keystock is available in both inch and metric sizes. Re-design the shaft shown below to be a uniform,Keyway chart Shaft standard key sizes rectangular gates keys diameters most non std readily. Keyway Bore Diameter Size Bore Reference -0. Choose from our selection of shaft keyways, including split-tapered bushings,. 1875 0. The keyway in the shaft is in the form Of a semicircular recess with the same Fig. At steady-state speed, the gear transmits a radial load of 230 lbf and a tangential load of 633 lbf at a pitch diameter of 8 in. The hub keyway is dimensioned by its width and depth on the shaft – keyway sides. 9. These keys have a tapered body that wedges in to the keyway for a more secure fit than standard machine keys. 4 3 3 11 12 4 1. width depth tol. Get a quote +61 7 3271 5424. . 2515 0. Unless otherwise specified, the shaft keyway is assumed to be standard. Standard and metric keyway broachesTable aii-12. Specifying English Keyways In the English system, it is standard practice to dimension keyways. Reference 'Machinery's Handbook'. Unused keyways shall be filled up or covered. A key is a piece of metal used to connect a rotating machine element to the shaft. Keyway metric key iso dimensions standard keyways keys r773 pdf bores shaft hub depth diameter standards engineering table edge. The dimension from the top of the keyway to the opposite bore side. Standard keyseated shafting,The hub keyway is dimensioned by its width and depth on the shaft – keyway sides. The commonKeyed Shafting 1045 - Key Shaft. 1(h/d) where e = Shaft strength factor. Referencing Figure 1, the keyway dimension is W x T 1. Just enter the size of the key and shaft, then click "Calculate". 000 / +. New keyless locking devices offer an alternative for challenging motion applicationsOur 5/8" shaft with keyway will serve your assembly well. +35 0. 1) Unless specified by the customer: 2) Actual shaft fit will vary depending on - Series S couplings supplied with actual shaft diameters. REFERENCE DEPTH. 1. Check Details. 19-1997 Keyway Stresses for Non-metallic Gears and. d. Unless otherwise specified, the shaft keyway is assumed to be standard. N = Number of splines. 9-11, and 9-12 Figure 9. A keyway is provided on the shaft and also on the hub or on a pulley to connect together the conjugate parts by inserting the key in between. Max. Rectangular or square parallel keys. The key length should be less than about 1. The advantage of the Js9 tolerance is that the key can beKeys shaft rectangular types key chart hub designs tapered machine selection5/8" od keyed shafting with a 3/16" full keyway Metric key keyway dimensions per iso/rtt3 js9 widthMetric key keyway dimensions. Ultimate tensile strength 580MPa, Yield stress approx 300 MPa. standard keyseat be used in the shaft in all cases. 2) Dimension h of the taper key names the largest height of the key, and dimension t z largest depth of the hub keyway. 1 . 000 mm to +0. While popular on external shaft keyways, milling is much less popular for cutting the inside. The advantage of the Js9 tolerance is that the key can be inserted and the gear manipulated without much difficulty. 3mm 5mm 5mm 5mm 5mm 6mm 6mm 6mm 8mm 8mm 22mm 24mm 16mm 17mm 19mm 20mm 25mm Keyway Width (w) 10mm 3mm 3mm 1. They conform to ANSI B17. This specification includes index tolerances for multiple keyways. Keys covered by this Standard have a relatively tight width tolerance. The centre of the pair should be opposite the keyway if a key is used with the set screws bearing on a slight relief turned in the shaft or a pair of flats. 6. 1 The two standard keyway ends for parallel keys. Shaft standard key sizes rectangular gates keys diameters most non std readily availableMetric key keyway shaft standard keyways falk keys bores resources industrial Shaft and hub keyway dimensionsKey allen hex wrench keys set bolts types alley supply competitive prices details alibaba fairwell. The width of the key (W) is 350 (0. To confirm the status of any standard, identify the replacement standard if it is obsolete and/or purchase the standard please use. 1. Standard keyways provide added torque capacity and fixed shaft phasing. ) the shaft sizes are known and controlled. Typical applications with these forces include indexing. The advantage of the Js9 tolerance is that the key can be Keys shaft rectangular types key chart hub designs tapered machine selection5/8" od keyed shafting with a 3/16" full keyway Metric key keyway dimensions per iso/rtt3 js9 widthMetric key keyway dimensions. The prole keyway is cut by an end-mile while the sled-runner keyway is cut by an ordinary milling cutter. Email: sales@usarollerchain. 020 0. Custom and interrupted keyways machined with quick turnaround; Keyed shafts can be furnished with a key already inserted, assuring a proper fit; Ground to a mirror finish of RMS 8 or better. A key prevents a relative rotation between the two parts, and may enable torque transmission to occur. Read more on how keys and keyways work and what types are available – Keys and Keyways. Finished Striaght bores for standard AGMA Class 1 Clearance fit. Check Details. The first is Js9. Partially Keyed Rotary Shafts. Keyway metric dimensions key iso tolerance js9 r773 width per depth hub t2 height radius text mill question answered hasnSolved 5. Hollow saddle key. rad 10 12 4 4 2. The following tolerances for maximum lead (due to angular displacement of keyseat centerline from centerline of shaft or bore and measured at right angles to the shaft or bore centerline) of keyseats in shaft and bore are specified: 0. Shaft Diameter. 48 products. Shaft and hub keyway dimensions. ** earcneaear r l c oFr Information DIN 6885 page 1 and page 2 differ mainly in the radial position of the parallel key (see sketch). 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. Shaft Keyway Shear and Yield Strength Formulae and Calculator. Find the depths to cut in keyway and keyseat. TruKey® Shafting from Keystone is designed to provide the straightest, most accurate keyed shafting, in the industry. The hollow saddle key is a taper key that fits in a keyway in the hub. Dimensions: Shaft Diameter (A): 2" Keyway Width (B): 1/2" Keyway Depth (C): 1/4" Shaft Material: 1018 Steel; Phone: (407) 347-3519 Email: [email protected] using a key it should firstly be fitted in the shaft Keyway. It other words, the torsional strength of the shaft is reduced. Key Stock is cold drawn to exacting tolerances with sharp corners, perpendicular and parallel sides, and smooth, bright surface finishes. 5000 2. 039. High Quality Keystock from USA Roller Chain and Sprockets. Keyway Width ( w ) Over 1/2" to and including 1" +0. Nominal Shaft Diameter Nominal Key Size Normal Keyseat Depth Types. For a shaft key to function properly, both the shaft and rotating elements ( gear, pulley, and coupling) must have a keyway and a keyseat. This standard is applicable to couplings as defined in ANSI/AGMA 9009-D02, Flexible Couplings - Nomenclature for Flexible Couplings, with metric bores and keyways. 3mm. Since they fit more loosely than standard keys, these undersized keys are best for uneven keyways or when you need to disassemble parts frequently, such as during maintenance or prototyping. 000 / -0. Shaft keyway tapered taper keyways bores wxhParallel key dimensions keyway metric keys rectangular 1958 imperial Keyways keys dimensions metric parallel tolerances engineering fit bs 1972Positive infinite variable gearbox,conveyor chains,couplings,universal. However, designers tend to forget that other important. scope: 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. js9 widt. 4. As a general rule, the key is a tighter fit to the shaft so that the key remains on the shaft during assembly and removal. Shaft and hub keyway dimensionsKeyways shaft keyway coupling shafts drive apart rotate two installing should asked driver question common am if when What are shaft keyways. The keyway on the. BS 46 Rectangular Taper & Gib Head KeyWay & Key Dimensions Ref Standard . Ann from the top of the shaft, the keyway is shown. Inch (ANSI/AGMA 9002-B4) Metric (ISO/R773) corresponding keyways for Metric shafts are listed below in Table 2. Title: Tables. 38 0. In addition to diameter tolerances that are twice as tight as standard keyed shafts, these shafts include a traceable lot number and test report. 010. Use the set screw to further secure the key. D. Get In Touch. ASME Code for steel purchased under definite specificationsstandard keyway design in section 5. Schlage keyway types including Primus/Primus XP, Everest, Obverse, Reverse, Numbered or Paracentric, and Quad. Dimensions standard keyseat keyway shaft shafts diameter nominal. 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. BS 4235-2:1977, ISO 3912-1977: Specification for metric keys and keyways - Woodruff keys and keyways. Jul 26, 2022 — by ML Engineering Content Editor in Machine Elements & Structural Engineering Keys and keyways are a very important part of shafts and power. These easy-to-adjust components maintain perpendicularity to <0. Phone: (407) 347-3519. Keyway width is most usually 1/4 of shaft diameter, rounded to the closest stock size. Install them in keyways to transmit torque from shafts to gears and other components. Design of Square Key and Keyway (Wood Ruff) Stress, Shear and Torque. 250 +0. All Keyways are parallel and to British Standard 46: Part 1: 1958, with the exception of those marked* which are shallower. The profile keyway is cut by an end-mill while the sled-runner keyway is cut by an ordinary milling cutter. from the split. 010 Height (d) (t) - DIM Keyway Width (w) AGMA 9002-A86 Inch Bore and ANSI B17. 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. Referencing Figure 1, the keyway dimension is W x T 1. 18 3. In stock and ready to ship. Refer to Figures 4 and 5 and Tables 6 and 7 for recommended setscrew location and size. A rounded bottom allows these keys to rock in their seat to relieve stress on the shaft caused by vibration or misalignment. The keyway is usually manufactured by a vertical or horizontal milling cutter. Double-check the key-way's width and depth as it pertains to your assembly, however. 000 so that there is no. Hex, round, and step profiles are available to mate. 4 2. 350 Maximum 2. There should be a top clearance between the key and the keyway in the bore. A key prevents a relative rotation between the two parts, and may enable torque transmission to occur. All dimensions are in inches. The gear can then be fitted onto the shaft and the keyway on the gear will fit over the key, inserted in the shaft. Nominal Dia. Keys and keyways. 4mm 1mm 1. This is an undersized clearance. 1 mm. 3 mm) in diameter with a standard bar clamp. xx / -0. Set screws and pins can also work as an alternative to the keyed joint. Overall length 5’’. Choose from our selection of parallel keys, including rounded machine keys, machine keys, and more. Check Details. Standard Metric Keys & Keyways for Metric Bores with One Key • Couplings (Page 2 of 2) All Types 427-140 Reo a 21 (P eso) oola e el 11 pesees 2 Telepoe 22 a 22 eoo Key & Keyway Dimensions – Millimeters Coupling Hub Keyway Dimensions – Inches Shaft Diameter “D” Key Size Nominal Keyway Width Hub “W” Keyway Depth Hub “T2” Shaft Diameter vs Key Sizes Design Recommendations. From the right side of the shaft total diameter is given with tolerances. Key strength and steel analysis entering into the makeup of stock for keys is not within the. Choose from our. 3) Keyway fillet radius to be specified by customer. The common KeywayAGMA ASA Keyway and Bores Design Data including dimension and tolerances. The 22 x 14 suggestion makes a lot of sense, unless prevented by thin-walled hubs and/or shaft size issues. PFEIFER INDUSTRIES, LLC. Clean delicate surfaces inside tubes, pipes, and holes. 5 Power rating Power ratings of shafts are presented in Tables 2-7. A list of standard keyway and corresponding. Standard Keyway Size Chart. 010 / -. 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. All of the measurements listed on the product pages in inches without the keyway width or depth. Woodruff keys work well near shaft shoulders, where a standard open keyway would create too much stress. Shaft couplings shall be so constructed as to present no hazard from bolts, nuts, setscrews, or revolving. . Using a hexagon socket wrench (DIN911) gradually tighten the grub cap screws in accordanceProduct Description. - If a part is 6 inches thick, the Wire-cut EDM machine will be able to cut two inches deep per hour. A Keyway is a slot of some kind that is used to align the part on a shaft and prevent the part slipping as the shaft rotates. Shafts with keyways can catch clothing easily. 0 2 2 9 10 3 1. Keyway Bore Diameter Size Bore Reference -0. 6. 112 MPa for shafts without allowance for keyways; 84 MPa for shafts with allowance for keyways; The most commonly used material for developing power-transmission shafts are Hot rolled steel bars, low-carbon steel, or an alloy (AISI/SAE 4140, 4340, and 8620). 5000 2. Meaning the keyway in the hub has a rounded contour instead of a rectangular contour. 004, then the shaft keyway should be 0. Schlage uses CNC milling complex keyway shapes to mechanically prevent some non-OEM keys from entering or operating a lock. It is also possible to make a calculation. 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. 015-0. 3mm 2. A frictional connection between shaft and component solves the problems associated with backlash, and additionally eliminates the machining operations required for keyways. We can provide keyed shafts in any length up to 20 foot.