keyseat dimensions. A rectangular key is generally used for shaft diameter between 1” (25 mm) and 20” (500 mm) Generally, these have a reduced effect on the shaft due to its shallow keyway depth. keyseat dimensions

 
 A rectangular key is generally used for shaft diameter between 1” (25 mm) and 20” (500 mm) Generally, these have a reduced effect on the shaft due to its shallow keyway depthkeyseat dimensions  It’s beneficial to know when and how to pick the

Max. Detailed bore and keyseat information is given on pages 2, 3 and 4. SAE Standard. , 20 # of Teeth 60BS20H X 1 1/2 TRITAN Finished Bore with Keyway & SS Bore Sprocket, 35 Chain Size, 1 Bore Dia. 0 No Keyseat 1 Standard Keyseat X No Keyseat or Standard Keyseat Part Number Examples L095118 L095 x 1-1/8” Hub L07512NK L075 x 1/2” No Keyseat Hub L09515/16 L095 x 15/16” Hub Bore Tolerances Bore Size Tolerance Up to and +. While this is possible and may save on up-front tooling costs, the results are not optimal. 1American Pulley stocks X-Style bushings in the following bore and keyseat sizes. 000000. In order to lock a hub or bushing and shaft together, and prevent the shaft from rotating in the bore, a key is commonly inserted into the keyseat that is machined in both the bore and shaft. For Woodruff keys, dimensions C and D can be found in Table. Keyseat Alignment Tolerances: A tolerance of 0. 5 14 9 71 14 11 5 5 200 55 49 16 10 80 19 15. Sleeve Coupling Flange, Coupling Size 7, Maximum Speed 5,250 RPM, Maximum Torque 940 in-lb, Outside Diameter 4 5/8 in, Bore Type Round Keyed, Hub Diameter 2 13/16 in, Hub Material Cast Iron, For Bushing Size Not Applicable, Bore Diameter 1 1/4 in, Length through Bore 1 27/32 in, System of Measurement Inch, Hub. 1890 0. 12 10 r. 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. Taper-Lock Bushing Keyseat Dimensions Bushing Bores (in) Keyseat 1008 0. 5 2. Table 11 on page 955 (18th edition) titled "USA Standard Keyseat Dimensions for Woodruff Keys (USAS B17. Square key. BALDOR ELECTRIC. All dimensions are in inches. 3 Protection against falling water up to. Electrical Engineering Pocket Handbook. The following sections describe key and keyseat dimensions, keyseat failure, and key failure. Keyway standard dimensions keyseat pdf information printer friendly. large diameters: +. These milling cutters are each sized to create keyseats for a specific size of key. 75 1. 6-hole drilling (most sizes) makes installation and removal quick and easy. The woodruff keyseat is the half moon slot cut into the shaft. 50 0. 2Keyway dimensions metric key js9 iso tolerance per hub radius width depth diameter nominal thru hasn answered question yet been. BALDOR ELECTRIC. Woodruff key slot dimensions 9 fasteners keys. 247 in, Bore Type Fixed, Chain Number 41, Finish Black Oxide, For Pitch Type Single Pitch, Hub Diameter 1 3/4 in, Hub. 5 149 71 14 115 5 20055 491610 80 15. Keyways Index. ANSI B17 1 PDF - C-4-C Ansi B17 1 Standard Keyway Dimensions Lowellcorp Keyway Dimensions - Armstrong Metalcrafts Ansi B17 1 Standard Keyway Dimensions Lowellcorp Shaft and Hub Keyway and Key Sizes Ansi B17 1. Replies continue below. Other data in this standard are given in Tables 2 and 3 through 7. The keyseat engages with the key on the part to prevent unwanted rotation of the part when it is mounted to the shaft. 06 0. Metric keys conform to DIN 6888 standards. Related Resources: gears Shaft Diameter vs Key Sizes Design Recommendations. The Woodruff Key numbers indicate normal key dimensions. 5000 1. In a bushing or hub it is sometimes called keyway. 12 01. 000/+. Woodruff Keyseat Cutter: 1. 2; ANSI Shaft and Hub Keyseat Dimensions for Woodruff Keys per. 75 1. The desired fit is a tight fit of the key in the keyseat of the shaft and in the keyway of the bore hole. Leader in Energy Efficient Industrial Electric Motors and Drives Key and Keyseat Dimensions Frame D G F GD Frame D G F GD 63 11 8. This is to ensure an interference once the key is inserted between the parts. ) TENSILE: 910 kilos (2000 lbs. zSelect key size, using W=H if shaft size < 6. 4 - HOLES E D *dimensions are for reference only. 63In 80-3 16 Cs, T80B16 T80B16 TSUBAKI Sprocket Chain Rlr P Sgl 1. Two types of woodruff keyseat cutters with cylindrical shank are specified:nema keyseat dimensions *open drip proof. Refer to page 3 to order the required coupling. 1; Hardware Design Information Misc. 2; Thread Shear Area for External and Internal Formulas and Calculator per. Cutter Dia Size. com. FREE delivery November 22 - 24. 000 2. Design of Square Key and Keyway (Wood. 8 10. 414 Maximum 2. RE: #406 Woodruff Key and Keyseat looslib (Mechanical) 18 Feb 03 19:10. Metric woodruff keys are supplied to din 6888 / iso 3912 in c45k keyKeyway hallite Keyway chartShaft keys. 500 1. The keyseat engages with the key on the part to prevent unwanted rotation of the part when it is mounted to the shaft. 125 About Us |. This is why we allow the book. (b) Determine the minimum diameter of shaft a for a safety factor of 2 based on static yield analysis. , 14 # of Teeth 50B14H X 5/8 MPB TRITAN Finished Bore with Keyway & SS Bore Roller Chain Sprocket, 40-2 Chain Size, 30 # of Teeth D40BS30 X 1 1/2 MARTIN SPROCKET & GEAR (3020) Spk Roller Tb, 120BTB24 120BTB24 TSUBAKI Single Strand Sprocket , 25 Chain Size, 1/4. These milling cutters are each sized to create keyseats for a specific size of key. NOMINAL SHAFT DIAMETER. Frame L449T is not included in this chart. 000 1. NEMA C-Face BA Dimensions 143-5TC 2-3/4 182-4TC 3-1/2 213-5TC 4-1/ 4 254-6TC 4-3/4 5000 FRAMEDE2FHOPUVAA AB BA 5 0 7S 1 2-63 4 NPT 8 5 0 7L 1 2- /63 8NPT keyseat dimensions chart with U = 2. Standard keyseat milling cutters, also known as Woodruff cutters, create keyseats in shafts for mating keyed parts to the shaft. NOMINAL SHAFT DIAMETER. The keyseat engages with the key on the part to prevent unwanted rotation of the part when it is mounted to the shaft. These milling cutters are each sized to create keyseats for a specific size of key. Which scale was used on this part?21. BOTTOM OF SHAFT TO BOTTOM OF KEYWAY. Category: Promotional/Customer Education Materials. The inch and metric dimensions here correspond to common values. English Dimensions: Keyway: W x T 1 Key: W x T Metric Dimensions: Keyway: W x h Key: W x T Keyway and Key Size Dimension Reference. 2-1967. ANSI woodruff size charts express measurements in inches and nominal key sizes with higher numbers corresponding to bigger keys. Never used commercially available keystock, it's intended to be filed to fit in the field. 62 1. ANSI B17. 5 20 12 100 28 24 8 7 280 75 71 22 14 112 28 24 8 7 315 80 76 22 14 132 38 33 10 8 355 85 76 22 14 160 42 37 12 8Keyseat: An axially located rectangular groove in a shaft or hub. 005"). The bores involved are listed above. Keyseat synonyms, Keyseat pronunciation, Keyseat translation, English dictionary definition of Keyseat. , 35 # of Teeth 35B35 TSUBAKI Sprocket Chain Rlr P Sgl 1. 18 X X X XX X 5J 2783 12 19 48 72 15 23 0. D im en s o- N , OP A Ba dX rp cf t l . Size and Location Dimensions A well dimensioned part will communicate the size and location requirements for each feature. The Metric system does not refer to keyseat or keyway dimensions as does the English system. Dimensions Keyseat Dimensions Fig. 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. D. key stock that has a _____ tolerance will need to be fitted by filing etc. This does not include the little hump of the shaft that gets removed. 0020” Standard Keyseat Dimensions Shaft Diameter Width. Width of Face. per ft. 202 to 1012 Height Width Diameter Actual Length Full Radius Flat Bottom Distance Key Below Center No. 5 149 71 14 115 5 20055 491610 80 15. 60 degrees from the vertical. 19 ; Keyseat Design Tolerances for Electric Motors and Generators; Arbor Keyway Cutter Hole Keyway Dimensional Data per ANSI/ASME. Differences Between Keyseat and Keyway. Two types of woodruff keyseat cutters with cylindrical shank are specified: ? woodruff keyseat cutters with cylindrical shank, in accordance with ISO 3338-1;unit 16 250 x 125 keyseat - v boss only both ends 4x 0. Saw cut through flange and taper (and sometimes cut down into keyway also) to provide a true clamp fit. Designed for cutting keyways and keyseats, these woodruff-style cutters. The following sections describe key and keyseat dimensions, keyseat failure, and key failure. 2 Woodruff Key Size Table Chart ANSI B17. • Design details such as tolerances, fillet radii, shoulder heights, and keyseat dimensions must also be specified. 001. Description. In order to lock a hub or bushing and shaft together, and prevent the shaft from rotating in the bore, a key is commonly inserted into the keyseat that is machined in both the bore and shaft. S. (a) Find the torque T 2 transmits through shaft a and the torque and speed of the output shaft c. 62 1. = All TEFC Chemical Processing, Dirty Duty, and Washdown Duty Motors. 250 0. Our exceptional quality and service has allowed KEO to become a world leader in the cutting tool industry. 80 151. Min Width A*. kEySEAT R ES MIN S 42 2. The height of the keyseat itself is not dimensioned because, once the top of the shaft is cut away, there is no feature left to measure. KeyWay. The keyway is machined by partial drilling on the shaft. 424 Minimum 2. 095 . 1265 0. a) Dimensions of the workpiece and tool (electrode), b) processing principle and keyseat dimensions 2. Standard keyseat milling cutters, also known as Woodruff cutters, create keyseats in shafts for mating keyed parts to the shaft. American Pulley • Phone: 205-663-3002 • Fax: 205-664-3351 •. Flats The length of flats should be specified as the overall length of the flat including the radius at the end(s) of the flat. 500 - 0. Keys and keyways secure the hub and shaft to prevent relative movement between a power transmitting shaft and an attached component. 002 1. Shaft keyseat dimensions and tolerances were given in ISO R773:1969. 4 Protection against splashing water from all. 30 102 PT 2 COLUMN BRACKET. 2. Keyseat R ES Min. 1 shows a keyseat for a shaft diameter D, key width W, key height H, and fillet radius r. When keyway and setscrew sizes are not specified, they are supplied in accordance with the table of dimensions headed “STANDARD KEYWAYS AND SET-SCREWS. The more important shaft dimensions are the diameters of all the other mating components. OK, I guess the straight key is the way to go, then. The keyseat engages with the key on the part to prevent unwanted rotation of the part when it is mounted to the shaft. Woodruff key slot dimensions 9 fasteners keys. Also, T 1 and T 2 are not necessarily equal. 937. The annexes also include the recommended design practice for tapered shafts for use with flexible couplings. 0000000. 75 7 2 2. directions, limited ingress. 5 4 4 180 48 42. Also known as jeweler's slotting saws and metal slitting saws, these saws are good for use on wire, tubing, extrusions, and other very thin material that requires delicate cuts. 5 2012 10028 248 7 28075 712214 11228 248 7 31580 762214 13238 3310 8 35585 762214 16042 37 128 *Contact your local Baldor office for “L” Dimensions. Shallow Keyseat Dimensions Some large bore Type C flanges are supplied with shallow keyseats. 1 shows a keyseat for a shaft diameter D, key width W, key height H, and fillet radius r. 0 186 19. ANSI woodruff size charts express measurements in inches and nominal key sizes with higher numbers corresponding to bigger keys. 670 668 01. , 24 # of Teeth 40BS24H X 1 TRITAN Stock Plain Bore Bore Roller Chain Sprocket, 41 Chain Size, 11 # of Teeth 41B11H X 1/2 MPBOrder Tritan Finished Bore with Keyway & SS Bore Sprocket, 40 Chain Size, 1-1/4 Bore Dia. 0 143JP and 145JP 29. (kg) C D 1E G H L T X 3J 2052 10 10 38 50 10 16 0. Bore Diameter Size Bore Reference -0. X-Style Bushings - XTB Bore & Keyseat Dimensions All measurements in inches. 10 THREAD CONTROLLING ORGANIZATION AND STANDARD - ASME. When we do keyways, and there isn't a tolerance or specified dimension to cut it to, we always take the chord height into consideration then go 1/2" deep. The Assume there is an end-mill keyseat on the shaft a to assemble the gear. Balance the assembly by adding balancing clay to the workpiece. I cut hundreds of them. Straight tooth cutters produce a better surface finish than staggered tooth. Design details such as tolerances, fillet radii, shoulder heights, and keyseat dimensions must also be specified. Pitch, 17 Hardened Teeth, 1-in. Imperial Woodruff Key Keyway Dimensions Pdf When people should go to the ebook stores, search start by shop, shelf by shelf, it is essentially problematic. ANSI B17. Unless otherwise specified, the shaft keyway is assumed to be standard. 24-5/8. Note: When ordering, add the Q-Style Bushing prefix BSHQD to the indicated part number. 2062TRITAN Stock Plain Bore Bore Roller Chain Sprocket, 100 Chain Size, 15 # of Teeth 100B15H X 1 1/4 MPB TSUBAKI Sprocket Chain Rlr 16Mm 94. 28 0. 0015” Over 2” +. xls Created Date: 1/23/2014 8:35:20 AM. Published: August 2018. Also, T 1 and T 2 are not necessarily equal. Bushing. Corner Radius Harvey Tool's selection of fully stocked, corner radius Keyseat Cutters includes standard, reduced shank, and staggered tooth designs. They mill precise notches in rotary shafts to fit machine keys and can also be used for slot milling. Max. 1 shows a keyseat for a shaft diameter D, key width W, key height H, and fillet radius r. 0015/-0. I will be attaching two sprockets to each shaft in the center. js9 width. This may also be written as shaft keyseat or hub keyseat when describing the exact 1/2 3/4. Feet prevent these keys from rocking in the keyseat. 984 267 10. Undersized Machine Key Assortments. Metric – Rectangular B. The following is summarized from the American National Standard Keys and Keyways for Milling Cutters and Arbors ANSI/ASME B94. Bore & Keyseat Dimensions All measurements in inches. A square key is used if the deeper key depth is required to transmit torque. ) DIMENSIONS IN INCHES Bolt Circle Cap Screws Required Weight Typical Material Steel Cast Iron Ductile A B D E F L Iron QT 1,750 1/4 1. Mount the adapter to the workpiece shaft using a full key in the shaft keyway and fill the half-key void in the opposite side of the adapter with a half-key (see Figure 6-22 B). 512 4. ,-The 3/4" per foot taper of the 0. Set screws are used as semi-permanent fasteners to hold a collar, sheave, or gear on a shaft against rotational or translational forces ;Dimension. 491"Staggered Woodruff Keyseat Cutter 3/4 X . ANSI Key No. Next, identify the keyseat dimensions required for the specific application. Select the Machine. The keyseat engages with the key on the part to prevent unwanted rotation of the part when it is mounted to the shaft. or material and filtering by the precise dimensions Catalog; About Us. I need the dimensions of a #406 Woodruff Key and Keyseat. What dimension is indicated as not drawn to scalo? 24. For technical drawings and 3-D models, click on a part number. Carbide Staggered-Tooth Keyseat End Mills. B14 Face P = Open Drip Proof AC or DC Motors. Designed for cutting keyways and keyseats, these woodruff-style cutters are designed with dished sides for clearance and are stocked in a multitude of. 03-01-2022, 09:47 PM #4. , 26 # of Teeth 60BS26H X 1 3/8 TRITAN Stock Plain Bore Bore Roller Chain Sprocket, 80 Chain Size, 25 # of Teeth 80A25 X 1 TSUBAKI Sprocket Strd Mult 1In 5. v. Desired Slot Size. 0020” Standard Keyseat Dimensions Shaft Diameter Width. 062. 1 have beern recent years. Where bores do not permit standard depth keyseats, a flat key of the proper dimension is furnished with the bushing. 4 5 6 8 8 8 10 12. o. 000 / +0. Note 1: Maximum bore with keyseat. 5x16 4x5x13 PIECES. The rectangular key, also known as a flat key, fits into the standard keyway in the shaft. ANSI-B17. 2. Finished Striaght bores for standard AGMA Class 1 Clearance fit. The Woodruff Key numbers indicate normal key dimensions. ansi b17. Please call for quote. 4. KeyWay /Key Dimensions. top of page. All dimensions given in inches. 3. During installation, woodruff keys will sometimes slip out of their groove as the. 6 times the shaft diameter. 5000. , 13 # of Teeth 60BS13H X 1 7/16. covering 66 listings. Max t Height C t0. material, usually AISI 1020 CD zDetermine yield strength of key, shaft and hub. Key Size Versus Shaft Diameter ANSI B17. See dimensions W and h in Figure 1. A numerical value (s) or mathematical expression provided in appropriate units of measure and used to define form, size, orientation, or location of a feature or part. *Dimensions are for reference only. 00 h 2. Frame D G F GD Frame D G F GD 63 11 8. 0005” including 2” +. 1 Keyway Dimensions - Lowell CorporationAGMA 9002-A86 Inch Bore and ANSI B17. B L F A E. 1-1943 standard. Keyseat Alignment Tolerances: A tolerance of 0. 2 a rectangular key of the proper SD 1/2 1-11/16 1-15/16 2 1. American National Standard, B17. ANSI B17. MPa. 22. 5 times the shaft diameter to ensure a good. Dec. 65 13. 8 products. Select the appropriate cutter for the keyseat size and profile you need. Yes, the "key" is an important element for the successful transmission of torque. *Dimensions are for REFERENCE in Energy EfficientIndustrial Electric Motors and DrivesLeader in Energy EfficientIndustrial Electric Motors and DrivesKey and Keyseat Dimensions Frame D G F. Made of solid carbide, these cutters are harder, stronger, and more wear resistant than high-speed steel and cobalt steel for the longest life and best finish on hard material. 006 CL +0. 350 Maximum 2. B +0. Dec. The keys and keyways followed the recommendations of ISO R773:1969 and shaft tolerances followed ISO R775:1969. Shaft keyseat dimensions and tolerances were given in ISO R773:1969. Placed directly on a feature to identify a specific size or they may be connected to a feature in the form of a note. 477This standard presents metric dimensions, toler-ances, sizes and fits for straight bores, tapered bores, keys and keyways for unmounted industrial flexible couplings. 2; Thread Shear Area for External and Internal Formulas and Calculator per. Min. Keyways are usually machined using a. Unless otherwise specified, the shaft keyway is assumed to be standard. In contrast, the keyway is the slot cut into the mating part to accommodate the. zSpec. Qty. 432 / . 000 +0. 2. 1/2" Shank Woodruff Keyseat Cutter. • Design details such as tolerances, fillet radii, shoulder heights, and keyseat dimensions must also be specified. Minimum keyseat width is that figure permitting the largest shaft distortion acceptable when. Our new Sure-Flex Plus® EPDM and Neoprene sleeves are best-in-class for coupling performance and value. BUSHING AND KEYSEAT DIMENSIONS. Recommended ANSI Standard Keys. In order to lock a hub or. ANSI B17. TRITAN Sprocket , 100 Chain Size, 21 # of Teeth 100E21H TRITAN Sprocket , 80 Chain Size, 28 # of Teeth 80SF28H TRITAN Sprocket, 3/8-in. Specify the final dimensions for each point on the shaft. 50 — 0. The width tolerance controls the size and form of the keyway, and the position tolerance controls the location and orientation of the centerplane (usually with the axis of the shaft OD as the datum feature). 938 - 1. s. , 30 # of Teeth 35BS30H X 1 TRITAN BushedRlrChnSprkt, QuickDetach, SF, 11/4in 100SF17HCollegeANSI Shaft and Hub Keyseat Dimensions for Woodruff Keys per. C +0. ja 10 – 24 60 sh, sds, sd 1/2 – 20 108 sk 5/16 – 18 180 sf 3/8 – 16 360 e 1/2 – 13 720 f 9/16 – 12 900 j 5/8 – 11 1620 m 3/4 – 10 2700 n 7/8 – 9 3600 p 1 – 8 5400 w 1 1/8 – 7 7200 s 1 1/2 – 7 9000 warning: use of anti-seize lubricant on tapered cone surface or on bolt threads whenKeyseat is a recess in the shaft,. 1. 28 0. B3 FOOT MOUNTED. Shaded areas: See Part 3, page 1. How much material was added when the change to the bosses was made?20. Specification for metric keys and keyways – Parallel and taper keys BS 4235-1:1972;Key stocks sizes various. The keyway is the actual slot or groove that is machined into the shaft or hub, while the keyseat refers to the area on the mating part that the key fits into. Leader in Energy Efficient Industrial Electric Motors and Drives Key and Keyseat Dimensions Frame D G F GD Frame D G F GD 63 11 8. 28 slot 0. Min. Woodruff Key Slot Dimensions; Woodruff Keyseat Dimensions;Inch keys conform to ANSI B17. 0005” including 2” +. 442 2-5/16 2. keyseat dimensions for woodruff keys per ansi b17 2 engineers edge web nsi shaft and hub keyseat dimensions for woodruff keys per ansi b17 2 continued these width a values were set with the maximum keyseat shaft width as that figure which will receive a key with the greatest. Key and Key seat DimensionsLeader in Energy Efficient Industrial Electric Motors and Drives L* AC E T6 LUG TERM BLOCKF8. keyseat dimensions chart with U = 2. 2-1967) appears to say that the depth of the keyseat from the edge of the opening is 0. r r Shaft Key Number Cominal Size Key. Industrial Welding and Machine Shop. 500 - 1. maintain the bushing’s position on the shaft until the cap. 2388 State Route 726 Eaton, Ohio 45320 (937) 456-2232 Fax (937) 456-2282 webmaster@kramerusa. 14. The Morrison therefore is designed as a machine tool with long fully scraped bearings between table and base. Note: When ordering, add the Q-Style Bushing prefix BSHQD to the indicated part number. The manufacturing method should only be specified if it is a mandatory design requirement. Horizontal Shaft Arrangements. Key Size Versus Shaft Diameter ANSI B17. Filled with practical information, this 118-page handbook (3. Bore & Keyseat Dimensions All measurements in inches. Woodruff Key Number: Wd. S AA Min. TB Wood's 440 North Fifth Avenue Chambersburg, PA 17201 - USA Toll Free: 888-829-6637 Phone: 717-264-7161 Fax: 717-264-6420AGMA ASA Keyway and Bores Design Data including dimension and tolerances. 2. Nominal Shaft Diameter Nominal Key Size Normal Keyseat Depth. X-Style Bushings - XTB Bore & Keyseat Dimensions All measurements in inches. Metric – Rectangular B. The following tables show standard dimensions for keys and their grooves. Hubs must be mounted with 100% keyseat and shaft engagement, as seen in A or B of Figure 1. 00 1. keyways /keys dimension in accordance with BS 4235-1:1972: Specification for metric keys and keyways - Parallel and taper keys. BTS Flange, No Keyseat, High Strength Cast Iron Material Model: 8SMPB. 3 Protection against falling water up to. specification dimension, Keyway Size, is highlighted. 12 — 0. com ©2004-2021 Kramer Power Equipment Co. Distance from the keyseat base to the cylinder axis, with the base dimension 1. KEYSEAT-SHAFT K E Y ABOVE SHAFT KEYSEAT-HUB. Standard keyseat milling cutters, also known as Woodruff cutters, create keyseats in shafts for mating keyed parts to the shaft. 19-1997 . Pilot Hole Drill Sizes for Wood Screws per. Pkg. Smooth-Finish Slitting Saws. 0015” Over 2” + . NEMA FRAME DIMENSIONS* FOOT-MOUNTED AC MAChINES * Dimensions in inches E "H" DIA. Woodruff eliminates the milling around the shaft shoulder where concentricity and stress concentration can be affected. particular bushing. This standard presents metric dimensions, toler-ances, sizes and fits for straight bores, tapered bores, keys and keyways for unmounted industrial flexible couplings. Specify the final dimensions for each point on the shaft. Key Size Versus Shaft Diameter ANSI B17. 0020” Standard Keyseat Dimensions Shaft Diameter Width. The keyseat engages with the key on the part to prevent unwanted rotation of the part when it is mounted to the shaft. 0 No Keyseat 1 Standard Keyseat X No Keyseat or Standard Keyseat Part Number Examples L095118 L095 x 1-1/8” Hub L07512NK L075 x 1/2” No Keyseat Hub L09515/16 L095 x 15/16” Hub Bore Tolerances Bore Size Tolerance Up to and +. 493. 3750 1. 2 Woodruff Key Size Table Chart ANSI B17. KeyWay /Key Dimensions. This has no effect on the ability of the bush-ing to transmit the load. 7x10 2. 0005” +.