Shaft Diameter vs Key Sizes Design Recommendations. Membership Services. Shaft Standardization. 25 - M 1. Slide assembly onto shaft, flange first Locate assembly on shaft for proper drive alignment Tighten cap screws alternately and evenly to specified torque Easy Off Remove cap screws and install in product threaded holes. 095 . 414 Maximum 2. Unless otherwise specified, the shaft keyway is assumed to be standard. All power levels stated gross power per SAE J1940 8 ThePowerPortal. ANSI/ A GMA 9112-B1 5 ANSI/AGMA 9112-B15 (Revision of ANSI/AGMA 9112-A04) American National Standard. See formulas and calculators for shaft with keyway design. frame size 225, 250 and 280 b5 flange has quantity 8 "s" mounting holes starting at 22. Keyway Sizes. BS 5686:1986, ISO 14-1982: Specification for straight-sided splines for cylindrical shafts: metric nominal dimensions, tolerances and gauging requirements. This key stock is stepped to match repaired keyways in shafts or gears. (0. Ex-pensive machining is therefore avoid-ed and shafts can be of a smaller diameter. back next. 30 - Retaining ring grooves, keyway, tapers, hexagonal socket holes, wrench flats, set screw grooves - Keyway, flats, 90-deg. Depth of keyway is measured at CENTRE. Home; Metric Keyways Index page; Parallel Keys and keyway Dimensions; Parallel Keys and keyway Dimensions to BS 4235-1:1972 KeyWay & Key Dimensions. size and length available. 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. The key length should be less than about 1. 005 x. 5/16. The inch and metric dimensions here correspond to common values. 3125 0. 000 +. 3 mm; 14 mm x 3. Standard Keyway Dimensions Shaft Diameter Set Screw Width Depth Up through 7/16" 8-32 3/32 3/64. It is common to use keyways or splines in shaft applications to provide transfer of torque between components. Recommended uniform relationship between shaft diameter and key sizes for parallel and taper keys. Keyway depth is something like 2/3 to 1/1 of width. 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. Model Series 15T200 -. 0 x 1. 114. 2) Dimension h of the taper key names the largest height of the key, and dimension t z largest depth of the hub keyway. 120. 531" 0. com Shaft diameter d: mm: Shaft torque T: Nm: Key length L: mm : key width b: mm: key height h: mm: keyway depth shaft t 1: mm: keyway depth hub t 2: mm: shear force F s = T/(d/2) kN: shear stress key τ = F s /(L搓) MPa: bearing pressure p = F s /(h/2微) MPa: Nominal torsional stress τ = T/(π/16搞 k 3), d k =d-t 1: MPa Parallel Metric Keys and Keyway Dimensions - Roy Mech. 5 1. 1/2 in x 1/4 in; 1/4 in x 1/8 in; 1/8 in; 1/8 in x 1/16 in; 10 mm x 3. 5 . Rigid couplings for keyed shafts firmly join two shafts of the same size together. And likely there is more of a drawing requirement than of old, that is definite dimensions rather than "1/2 square keyway. 1. 4375 shaft. com ©2004-2021 Kramer Power Equipment Co. 4mm 1mm 1. Typical steels for locknuts are: AISI, C1015, C1018, C1020, C1025, C1035, C1117, C1118, C1212, C1213, and C1215. 3mm 2. ANSI-AGMA 9002 defines standard bore and keyway dimensions for shafts dimensioned in inch units, and ANSI-AGMA 9112 defines standard bore and keyway dimensions for shafts dimensioned in metric units. Engineering Information Taper Metric Key and Keyway Dimensions. 3/8 . 424 Minimum 2. Where: T = D + T2. Tapered Gib Keys. JIS (Excerpt from JIS B 1301-1996) Unit mm Nominal key size b × h. H is measured Perpendicular to key. (1) d b1 b2 b1 b2 b1 and b2 Tolerance (H9) Tolerance (D10) Tolerance (N9) Tolerance (Js9) Tolerance (P9) 2×2 2 +0. Woodruff eliminates the milling around the shaft shoulder where concentricity and stress concentration can be affected. Shop Lead Screws - One End Double Stepped from MISUMI. Body Ductile iron, as standard, providing higher mechanical properties. Abrading & Polishing; Building & Grounds;. com. In the Section features drop-down menu, select Add Keyway groove. Shaft: Key: Keyway: Nominal Diameter d: Section b x h : Width Shaft & Hub b: Depth: Radius r: Shaft t 1. 000. Recommended ANSI Standard Keys and Keyseats Design per. Get In Touch. Metric – Rectangular B. Taper per Ft. Material Selection for Shaft key. Therefore most motor series are offered with both standard frame sizes. Rexnord, 3001 . Specific sizes to accommodate metric applications. 002-. Standard Metric Keys Keyways for Metric Bores with One Key; Keyway Cutter Hole Keyway Dimensional Data for MIlling Centers and Arbors - ANSI/ASME B94. dimensions contained in ANSI/AGMA 9002--A86 represented the dimensions and tolerances used within the industry for pre--engineered couplings. 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. , depending on the lock nut size: ANSI/ABMA Std. Use them to connect gears and other components with tapered keyways to shafts. Stock lengths from 3 feet to 24 feet. For a key to function, the shaft and rotating machine element must have a keyway, also known as a keyseat, which is a slot or pocket the key fits in. The lock washers engage a keyway in the shaft or adapter sleeve thread. 1. Keyway/slot on shaft Keyway/slot on shaft pedrof (Mechanical) (OP) 20 May 14 13:03. Specification. Code: 010823YG. -. Brant Akkan. Keyway broaches are used for producing keyway-shaped holes in a workpiece. 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 It is common to use keyways or splines in shaft applications to provide transfer of torque between components. When a keyway is damaged, cut a new, wider one. 0 2. h = keyway depth (m) For a solid steel shaft of 18mm diameter, with keyway 6 wide x 32 long by 3. Special keyway configurations. Parallel keys are the most widely used. 2-6 Antimony St, Carole Park QLD 4300, Australia Phone +61 7 3271. Lock washers engage a keyway in a shaft, or adapter sleeve thread. Lengthsnot. 1. 375 / . Use the middle of the shaft with bearings and other round-bore components. 13. 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. Carbon steel (AISI-1045) or stainless steel (T304 or T316) Custom shaft sizes and key sizes. 2-1967. 2 13 32 28 Designation of a Woodruff key of width b 8 and height b 11 n: woodruff key. 49 4 M i4 Ms ai l gn lm m e Mn t4 FMm u Mdm Um 49 4 M i4 Ms ai l gn lm m e Mn t4 FMm u Mdm Um 450 630-852-0500 Safety Warning ED-2 When using Lovejoy products, you must follow these instructions and take the following precautions. Radius at bottom of keyway in shaft and hub 11 28 + 0. Shaft Key Seat Depth Control Values S and T for Shaft and Hub ANSI B17. The lock washers engage a keyway in the shaft or adapter sleeve thread. In the Section features drop-down menu, select Add Keyway groove. 1 Nm. Just did a 7/8'' key in 3. Metric Key & Keyway Dimensions Per ISO/R773 D10 Width Tolerance Key & Keyway Dimensions Millimeters Shaft Diameter D Over. Choose from our selection of 1 15/16" shafts in a wide range of styles and sizes. That is, for a 1/2" key the depth of the keyway would be . 018: 4: 0 -0. The common The following tables show standard dimensions for keys and their grooves. Multiple-spline shafts Error! Bookmark not defined. Days to Ship : Same Day. Sign-In Create Account. Diameter Shaft diameter d_1. Install them in keyways to transmit torque from shafts to gears and other components. Use them to connect gears and other components with tapered keyways to shafts. “Dimensions and identification code for mounting flanges and shaft ends of displacement pumps and motors”. 2515 0. 1 +0. Dimension b×h Dimension of Key Groove Reference Reference Dimension of b1, b2 (Sliding Type) Standard Precision Class r1 and r2 Reference Dimension of t1 Reference Dimension of t2 Reference Dimension of t2, t1 Applicable Shaft Dia. 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. +40 0. Keyway, Key wayHollow shaft gear unit with shrink disk connec tion: If required, please request a detailed data sheet on shrink disks, data sheet no. 2. As noted above, when selecting a keyway tolerance, there are two common selections in the metric system. 202225. This shaft key installation requires a keyway on the hub and it does not require any keyway on the shaft. If a key is to be fitted place it in the shaft keyway before fitting the bush. The calculator determines a safety factor (design coefficient) based on shaft diameter, max engine RPM, shaft horsepower, gear ratio, and torsion strength of the shaft material used. 004, -. It proved useful in. Inch-to-metric couplings can solve incompatibilities occurring when mating an English shaft to a metric one. Partially Keyed Rotary Shafts. 4 3 3 11 12 4 1. Face Width Face width is limited in its maximum dimension to allow proper clearance to provide for chain engagement and disengagement . 015/-0. Woodruff Keyways & Keys. On the Design tab, select Cylinder in the tree control. TABLE 1 — Shaft and Keyway Dimensions – Inch Size Nominal Shaft DiameterFor more information, to get a formal quote on 2-15/16" keyed shaft, or for pricing on any of its accompanying components/ accessories please contact us and we will be happy to assist you. Metric DIN 6885 Parallel Key High Type “A” (aka feather keys) is a component used to connect machine assemblies to a shaft in order to prevent relative rotation between the two parts. 50 Gross Torque/127cc. Lead Screw Nuts - Flanged, Fine Pitch. The relative dimensions corresponds to a d = 100mm shaft according to [1], (t = 10mm, b = 28mm, 0:4mm 5 r 5 0:6mm). It is also possible to make a calculation. The information contained with ANSI/AGMA 9002-A86 did not necessarily agree with some commonly used specifications. 1. Features can only be placed on the shaft edge, for example: Chamfers, fillets, lock nuts, and threads. Rubber buffer for FA/FH/FV/FTtapered keyways are: width . The method of dimensioning a parallel shaft is shown in Fig. They are also often used on tapered shafts. In this paper, an attempt is made to manifest how minute deviations from the standard dimensions of the keyway of a shaft leads to the occurrence of premature torsional fatigue along the. DIN-Keys & Keyways to ISO Diameter d in accordance to DIN 6885/1 in accordance to DIN 6885/3 above to Width b 1) Depth h Shaft Keyway Depth t₁ Hub Keyway Depth d = t₂ Width b 2) Depth h Shaft Keyway Depth t₁ Hub Keyway Depth d = t₂ mm mm mm mm mm mm mm. 3 16 10Keyway and Key Size Dimensions - ISC CompaniesThis online. Rotary Shafts - Straight with Keyway Grooves. 28 MSS SP-43. A gear or other component with a woodruff keyway is then. A. Figure: Reference graphic for dimensionsActual Application Dimension N SLED RUNNER KEYWAY EXAMPLE. The calculator utilizes the following. 000 / +0. 994 products. 360 Minimum 2. Also calculated are the overall measurements for shaft and bore, as well as the chord height. Slightly. Machine keys are pre-cut lengths of metal that insert into the groove of a. 3D Printing & CAD. Keyway Bore Diameter Size Bore Reference -0. Length 0. The IEC 72 defines motor frame size standards for regions that use SI units. . EN Standard. flats, V-grooves. About Us. com ©2004-2021 Kramer Power Equipment Co. Type: 0112 E1. PIECES SIZE 50 50 45 35 30 20 15 16 30 22 20 14 3x3x30 4x4x60 5x5x63 6x6x63 8x7x50 10x8x50 12x8x50 12x8x120 8x7x100keyseat to opposite end of the shaft • For key seat, from top of keyway to bottom of hole . 1. Keys and keyways are a very important part of shafts and power transmission. b = 14, 16, 18, 20. • Shaft Basis fit: the basic size is the maximum dia of the shaft and the fit is calculated base on this Basic hole and shaft system-Imperial sizeMetric key keyway dimensions per iso/rtt3 js9 width Metric plated Metric woodruff keys are supplied to din 6888 / iso 3912 in c45k key. The keyseat depth equals 1/2 the key thickness. xls Author: KEITHStandard Keyway Size Chart. On the Design tab, select Cylinder in the tree control. r and driven shafts so that the dimension between the hub faces matches the ‘G’ dimension, or gap as specified in Table-4. Lock washers, locking clips and locking plates are simple, stable and reliable fastening elements. 0005-. Keyseat Alignment Tolerances: A tolerance of 0. 6. The shaft broke into two parts of comparable size and are identified as drive side and non-drive side, respectively. 8mm 2. drujba - Stihl 020 - schema. A shaper with a square tool will do a keyway in a bore and the depth is not critical but would require a precise form tool to do a round keyway and the depth of the cut is now very critical. 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. Keyway broaches are used for producing keyway-shaped holes in a workpiece. Many keyways are milled directly into a shaft or broached into. 4. Therefore, if replacing the shaft and propeller, it is wise to follow the Taper Standards for access to a wide range of replacements propellers. 5020 2. The key prevents relative rotation between the two parts and may enable torque transmission. 8 6 6 23 30 8 3. Verify the shape to ensure it will fit in the hub's bore. One-pass keyway broaches are used for cutting the full width and depth of the workpiece in smaller run productions. Table 11 on page 955 (18th edition) titled "USA Standard Keyseat Dimensions for Woodruff Keys (USAS B17. DIN 74(V Flexible (Shaft) Couplings; Dimensions, Nominal Torque. Clearance Fit Bore Tol. 1 Square Keyway Tolerances Minimum 2. No lubrication required. DIN 6885/1 :- Definition. 4375 + . Keyway Width. Edge Features. Saddle keys are one of the shaft key types which is installed on the surface of the shaft and not in the keyway on the shaft. Keyway Size 1. 020 0. Referencing Figure 1, the keyway dimension is W x T1. Woodruff key is a easily adjustable key, with a hammer blow to the key. Parallel Key and Keyway Sizes and Tolerances. 4. The commonCommon dimension specification English Standard Keyway and Key Sizes Shaft Diameter (in) Keyway (in). Setscrews are placed over key at 90˚ to the key unless otherwise specified. TABLE3 DIMENSIONS FORKEYWAYS (Clause 3. Width. Shaft key standard sizes rectangular gates keys std diameters most non readily availableshaft keyway width b with normal fit is ISO N9and with close fit ISO P9. Keyless Shaft The torque transmitted through a keyless coupling without slipping or damage is: T =πJ/r. size jrc web accessories 46 passaic avenue fairfield, nj 07004 125 unless otherwise specified remove all burrs & sharp edges reference drawing dimension tolerance ` fractional 1/64 angular 0. 376 . But also, there are lots of kinds of other applications. 2; ANSI Shaft and Hub Keyseat Dimensions for Woodruff Keys per. Standard Metric Keys & Keyways for Metric Bores with One Key • Couplings All Types (Page 1 of 2). Dimension b×h Dimension of Key Groove Reference Reference Dimension of b1, b2 (Sliding Type) Standard Precision Class r1 and r2 Reference Dimension of t1 Reference Dimension of t2 Reference Dimension of t2, t1 Applicable Shaft Dia. Nominal Shaft (Arbor) Keyseat Cutter Hole Diameter: Nominal Size Square Key: Cutter Hole & Keyway. Slightly larger than the size listed, these oversized keys offer a tight fit in worn keyways. 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. Stainless Steel-Feather keys DIN 6885 are only in packing units of 10 pieces for each size and length available. Standard size of. When installed, these keys fill oval keyways completely, reducing stress on the key and shaft. 2 Woodruff Key Size Table Chart ANSI B17. Normal Keyseat Depth. Just to determine what flange and shaft of pump or motor you have, please see below excerpts from the next standards: SAE J744. Keyway Width. 51144 1804842. Re: NEMA Motor Shaft Dimensions and Tolerances. 1/8 Keyway, 3 ft. Some products are designed for repairing damaged shafts. This describes the width and depth dimensions of the machined keyway slot. • Compare the overall engine size to avoid possible mounting interference. deter-largest height of the key, and dimension tz. Here we can calculate rigid connections, namely the pinned, keyed, splined and flanged ones. In general, keyways are designed according to standard keyway productions, and all the dimensions are given by the key manufacturers. The key length should be less than about 1. 31 38 10 3. Whether dimensions according to standard, special materials or production to drawing, as a manufacturer of parallel keys and wedges the company crummenerl-gmbh. By using split shafts, we obtain axial movement as well as a positive drive. 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. Keyway Shaft Keyway REF Key Size REF JA 1/2. Leader in Energy Efficient Industrial Electric Motors and Drives Key and Keyseat Dimensions FrameD G F GD Frame D G F GD 63 8. Pressures typically required range from 103,000–206,000 kPa (15,000–30,000 PSI) depending on shaft dimensions, coupling dimensions, and shrink fit. The function of the key and keyway is to prevent relative motion between shaft and hub. Model: 407777. The shaft keyway and hub keyway dimensions according to ISO 6887 - taper keys with gib head - are equal to those in ISO 6886 2388 State Route 726 Eaton, Ohio 45320 (937) 456-2232 Fax (937) 456-2282 webmaster@kramerusa. Motors and gearboxes that generate high torque and acceleration may make shaft keys obsolete. The first is Js9. Keyway Width ( w ) Over 1/2" to and including 1" +0. 415. But the key does not have to extend the length of shaft. KeyWay. 3mm 2. keyway width to ISO JS9 Exception: Key for WA. Nominal Shaft Diameter. 000 / +0. Dimensions: Shaft Diameter (A): 3-7/16" Keyway Width (B): 7/8" Keyway Depth (C): 7/16" Shaft Material: 1018 Steel; Phone: (407) 347-3519 Email: sales. such as the dimensions of keyway on shaft. 587 / 2. Obeying the standards the only possibility to improve the stress concentrations for the design in Figure 2 isHere, T 1 is the high-speed shaft torque and η is the efficiency of the reducer (=0. Rectangular. Days to Ship : Same Day. Displays the description of the parameter. Remove the second bushing per Steps 1-4. 2-1967) appears to say that the depth of the keyseat from the edge of the opening is 0. Key dimensions: Parallel keys are most commonly used. Use the keyways with machine keys to transmit torque to gears, sprockets, and other keyed components. Referencing Figure 1, the keyway dimension is W x T 1. 477 Maximum 2. 5000 2. It helps to transmit. 4mm 1mm 1. ) max. Cut keys to custom lengths. Check Details. 3mm 2. Keyway width P9 tight fit (standard design) JS9 or N9 loose fit (standard design) Other tolerances / tolerance ranges must be specified separately and require a written agreement. All dimensions are given in inches. You can place only one feature on the shaft edge. WIDTH. STANDARD KEYWAYS AND SETSCREWS Diameter Diameter Keyseat of set of Shaft Width Depth screw 1⁄2-9⁄16 1⁄8. 4 x 4 1 1 0. 3. For designs where unequal portions of the key are in the hub or shaft, h 1 is the minimum portion. ASME B1. Question: Question 5: You have been tasked with designing a square keyway in a power transmission shaft. All sizes are in inch units. The entire setup is referred to as a keyed joint. Keys and keyways secure the hub and shaft to prevent relative movement between a power transmitting shaft and an attached component. 3: Sliding along shaft with loading: 9: Application factors K a. Metric module, side fit. 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. Material Selection for Shaft key. 30)or the cap screws (bush size to 5050)and screw them in, do not tighten them yet. Press it into place for use in high-torque applications or to replace a key in a worn keyway. Nominal Bore Diameter Clearance Bore Interference Bore Keyway “T”-DIM +0. Metric Keyway Calculator. This describes the width and depth dimensions of the machined keyway slot. Power generation: Turbine and generator shaft keyways in hydroelectric,. 8 10 12 17 22 30 38 44 50 58 65 75 85 95 110 130 150 170 200 230 260 290 330 380 440 500. Regardless of which unit of length you're using, you'll need to measure the following: width, height, and length. These shafts have keyways only on the ends, leaving a plain shaft in the center. New diameter sizes (13, 16, 17, 18 and 22) are added for h9 tolerance types. Usually the term keyseat is referred as a groove or pocket on a shaft, and a keyway is a slot in a hub in which the key fits into. New diameter sizes (13, 16, 17, 18 and 22) are added for h9 tolerance types. Finished Striaght bores for standard AGMA Class 1 Clearance fit. Title: keyway dimensions. Flat and parallel feather keyways are used for 1/4” to 2-1/2” diameter shafts while delivering the same torque capacity as square and rectangular parallel keys. Verify the shape to ensure it will fit in the hub's bore. 002. W = d/4[clarification needed] H = 2d/3[clarification needed] where. Metric Woodruff Key and Keyway Dimensions and Tolerances (all dimensions in millimetres) in accordance with BS 4235-2:1977 and ISO 3912-1977 b x h 1 x D Width b Depth Radius R Nom Tolerance Class Shaft t 1 Hub t 2 Normal Close Shaft Hub Shaft & Hub P6 Nom Tol Nom Tol Max min N9 Js9 1. 3mm 2. Lead Screw Support Units - Fixed Side. A list of standard keyway and corresponding key sizes for English shafts are listed below in Table 1. 180200220. 8 mm;. Nearly every shaft diameter has a corresponding standard keyway width and depth – this calculator helps you find it. H/2. 1. Per BS 4235-1:1972: Specification for metric keys and keyways – Parallel and taper keys. the depth of a keyway is an important taken every Shaft keyway depth calculatorKeyway misumi. Install in a keyway to transmit torque from shafts to gears and other components. The first dimension will be the width of the keyway which is the dimension of the key needed. AGMA ASA Keyway and Bore Design Data ASA Keyway and Bores Design Data including dimension; Woodruff Keys ANSI B17. Standard External Metric Thread and Fastener Sizes M 0. 25 - M 1. Sizes, Shafts, Keyways. 2-1/4 in; 2-3/8 in; 2-1/2 in; Clearance Diameter. 4375 1. 4. They are semi-circular, and fit into a Keyway shaped as a circular-segment in the shaft and a rectangular slot in the mating part. Account. Keyway Bore (inches) Reference Height (d) 1. Rexnord Industries, LLC, Coupling Group 427-108. Dimensions: Shaft Diameter (A): 2-15/16" Keyway Width (B): 3/4" Keyway Depth (C): 3/8" Shaft Material: 1018 Steel; Phone: (407) 347-3519 Email: sales. 010 / -. All dimensions in mm. 3D Printing & CAD. T. 010 Height (d) (t) - DIM Keyway Width (w) AGMA 9002-A86 Inch Bore and ANSI B17. , depending on the lock nut size: Mating shaft threads (recommendation) KM/KML Metric thread, 6g: ISO 965-3 HM/HME and HM . SeatThe hub keyway is. Uncommon sizes or combinations of shaft diameters, shapes, keyways, or other configurations can be solved with custom shaft couplings or. 000 Over 1" +0. 1-1967 (R1998) 3/16 7/32 1/4 1 3/4 2 1/4 2 3/4 3 1/4 9/16 7/8 1 3/8 H/2 To (Incl. The main advantage of the Woodruff key is the elimination of milling near shaft shoulders, where stress concentrations,. This SAE Standard specifies basic tolerances and dimensions for inboard propeller-shaft ends, propeller hubs and keyways for shaft sizes 3/4in(19mm) through 8in(203mm). 293. 002 to 0. The size of the contact. The following 8 critical agents musts be regarded when creative both selecting ampere shaft key. We stock pre keyed shafting in many diameters, including metric diameters, with standard keyways. Convert Or. 424DIN 6885-1 :- Key, Hub Keyway, Shaft Keyway Details and Dimensions. 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. " Hard to hit a toleranced size. . Unless otherwise specified, the shaft keyway is assumed to be standard. 1250 0. 025 2 0-0. 1, the Metric key size is W x T. 1250 0. 002". RBL Precision Ansi Roller.