Recommendations for key size, length and keyway depth as a function of shaft diameter are provided in ASME Standards B17. The following tables show standard dimensions for keys and their grooves. O. keyway. Free CAD downloads, short lead times, competitive prices, and no minimums. Standard L Type coupling hub materials are either sintered iron (L035-L190) or cast iron (L225-L276). Thin parallel keys and their corresponding keyways (Dimensions in millimetres) 95. Unless stated otherwise, hub torque and horsepower ratings assume a SOX (NBR. Clamp-Type Couplings with Keyways. 1-1967, ASME standard B17. Keyway size; b h c or r Standard size of b1 and b2 Tightening type Normal type r1 and r2 t1 t2; Standard size Tolerance （h9） Standard size Tolerance b1/b2 tolerance（P9） b1 tolerance（N9） b2 tolerance（Js9） Standard size Tolerance Standard size Tolerance; 2×2: 6~8: 2: 0 -0. Coupling spider. One-Piece Clamping Collars; Two-Piece Clamping Collars. 16~0. The bores on our set screw rigid couplings are precisely manufactured to ensure that they are collinear. 5. In this example, the standard key is a 28-millimeter by 16-millimeter key, and the permitted mean clearance is 0. MISUMI USA has all of your Flexible Shaft Couplings needs covered, with over 3. Unit of Measure. V. This coupling comes completely apart to allow the most convenient assembly and adjustment. (31. 322 3/32 0. Machinable Shaft Ends. Weight (lb) 4012; 0 . For complete product overview and details on Couplings - Jaw, Clamping with Key Groove see the sections below: New Pricing. See dimensions W and h in Figure 1. Metric keyways are dimensioned by width and depth as measured from the radius of the shaft to the center of the keyway. Coupling is a component used to connect a drive shaft and a driven part, for example, a motor shaft and a ball screw for the purpose of transmitting the torque. But ensure the weakened shaft can support the load. Spindle couplings, and floating shaft couplings provide the maximum capability. Coupling Size Keyway Size (mm) Length thru Bore CAD; 88345096457: Description N/A QF100X63MM : Bore Size N/A 63 mm: Coupling. Over To (Incl. 406 . Coupling bores and keyways can be additionally modified. L Type Inch Bore / Keyway The L Type coupling consists of two standard L Type hubs and one spider. Jaw Type Catalog (pdf catalog) Standard L Type coupling hub materials are either sintered iron (L035-L190) or cast iron (L225-L276). Clamp-Type Couplings with Keyways are available with straight-through bores. Rigid coupling. Horsepower @ 100 RPM. Installation Video for Jaw Type Couplings. 4 Nm) to a maximum torque rating of 170,004 in–lbs (19209 Nm) and a bore range of . 025: h9: 0. Unless stated otherwise, hub torque and horsepower ratings assume a SOX (NBR) rubber spider is being used. Design 2. clearance fit bores with set screws. 810-inch outside barrel diameter and 3. Engineer's Angle. MU-755 15 42 MU-756 19 42 MU-757 25 42 code thread size [inch] lug distance [mm] description MU-953 1/2 42 Coupling with. Unless stated otherwise, hub torque and horsepower ratings assume a SOX (NBR) rubber spider is being used. Oldham couplings positively connect motor and equipment shafts to precisely transmit electrically isolated power. Standard L Type coupling hub materials are either sintered iron (L035-L190) or cast iron (L225-L276). H h r T2 T1 T Common dimension specification Standard Key and Keyway Sizing English Dimensions: Keyway: W x T Key: W x T Metric Dimensions: Keyway: W x h Key: W x T Common dimension specification The first thing to know about coupling bore and keyway standards is that there are quite a few currently active and available. Created Date:Half-key balance. Excessive torque. 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. Design of Square Key and Keyway (Wood Ruff) Stress, Shear and Torque. By correctly interpreting which standard a PT component was made to, you can solve replacement specification problems and eliminate expensive special ordersStandard L Type coupling hub materials are either sintered iron (L035-L190) or cast iron (L225-L276). Installation Instructions for Jaw Type Couplings. ] from Reid Supply. Couplings which do not have a CE marking, must not be used in potentially explosive areas. (German National Standard) Deutsches Institut Fur Normung E. , the bore diameter is 0. Stocked in: Steelansiagma9112a04-Bores and Keyways for Flexible Couplings (Metric Series)-This standard describes sizes and tolerances for straight and tapered bores and the ass. keyways to meet the industry accepted ANSI/AGMA 9112-A04 Standards’ tolerance for common keyways and clearance fit boresAnswer: A keyway is used to prevent components from slipping on a shaft and add torque capacity in driven systems. 1 - 19 of 19. Standard External Metric Thread and Fastener Sizes M 0. Unless stated otherwise, hub torque and horsepower ratings assume a SOX (NBR) rubber spider is being used. The sleeve inner side and the shaft outer side will have the same profile slots with the same number of them. Coupling Size. Motor and winch extensions are both 6 . Browse related products from Deutsches Institut Fur Normung E. Non standard bores and over the keyways. This is due to the stress concentration near the corners of the keyway and reduction in the cross-sectional area of the shaft. 00. Refer to Table 2 for compression limits (min gap ‘X’). KEYSHAFT Keyed Shaft, Diameter 3/4 in, Keyway 3/16 in x 3/32 in. A square key is used if the deeper key depth is required to transmit torque. Fail-safe (will still perform if elastomeric “spider” fails) No metal to metal contact. CC-105 Manufacturer Part Number: CCF-1/2-1/2-K. Key (engineering) In mechanical engineering, a key is a machine element used to connect a rotating machine element to a shaft. MISUMI is a single source for FA & metal molding parts, and industrial tools and consumables. Once the overload is removed, the limiters automatically reset. It consists of a flexible joint fixed to each shaft. 2023. The L Type coupling consists of two standard L Type hubs and one. When a jaw coupling hub fails catastrophically, it will typically fail either by shearing at the jaw legs (pictured at right), or by crack open between the inside bore and outside diameter of the hub (generally along the keyway, as pictured below). Standard L Type coupling hub materials are either sintered iron (L035-L190) or cast iron (L225-L276). For a key to function properly, both the shaft and rotating elements (gear, pulley and coupling) must have a keyway and a keyseat. Specification. 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. All Stainless Steel Products. clearance fit bores with set screws. Unit of Measure. MISUMI USA has all of your Flexible Shaft Couplings needs covered, with over 3. [mm] lug distance [mm] description MU-754 13 42 Coupling with hose tail. Couplings Bore and Keyway Additional Modification Service We offer standard and custom versions of these types of rigid shaft couplings: One-Piece Split Clamp Couplings: high-strength, heavy-duty, or low-profile styles; Two-Piece Split Clamp Couplings: easy installation and adjustment, with or without keyways, suitable when access to both shaft ends is not possible. n Metric bore tolerances conform. Browse SC Type Spacer Coupling Hubs with Keyway, Standard Length - Inch (Imperial) Bores in the The Timken Company catalog including Part Number,Description ,Bore Size ,Hub #,Keyway Size (W x D),Outside Diameter,Dimension L,Dimension SL MISUMI. Ruland JCC36-11-A, 11/16" Jaw Coupling Hub, Aluminum, Clamp Style With Keyway, 2. This coupling comes completely apart to allow the most convenient assembly and adjustment. The shaft insertion depth l 2 is specified in the standard sheet of the respective coupling. 2. Unless stated otherwise, hub torque and horsepower ratings assume a SOX (NBR) rubber spider is being used. Volume: 5. 93:. 1. ・Providing tolerance for errors (misalignment) between the cores of the drive. 90. Keyway connections refer to a slot, or “keyway” cut into one part of a coupling while the other portion has a corresponding “key. Standard L Type coupling hub materials are either sintered iron (L035-L190) or cast iron (L225-L276). Standard L Type coupling hub materials are either sintered iron (L035-L190) or cast iron (L225-L276). Square keys. Refer to pages JW-11, JW-12, and JW-10. 2 All sleeves, seals, hub bores, shafts, keys, and keyways. The first thing to know about coupling bore and keyway standards is that there are quite a few currently active and available. Rigid coupling. 4375 1. MISUMI. ROTEX ®GS couplings are suitable for power transmission in hazardous areas. pdf), Text File (. (Dimensions comply with DIN 6885/1) † Requires use of chamfered keys. = 1. Shaft Keyway Shear and Yield Strength Formulae and Calculator. 0704599 Falk Steelflex T10:T20 Series Standard Hub 10010792 1030T HUB 1. Unless stated otherwise, hub torque and horsepower ratings assume a SOX (NBR) rubber spider is being used. Published by American Gear Manufacturers Association 500 Montgomery Street, Suite 350, Alexandria, Virginia 22314. Moorland Rd. •Each flange is mounted on the shaft end and keyed to it. MISUMI offers FREE CAD downloads, short lead times, technical support and competitive pricing on over 80 sextillion parts. Shaft with Two Keyways Torque Applied Deformation and Stress. Coupling Size Keyway Size (W x D) Length thru Bore CAD; 88345043073: Description N/A QF25S303X1-7/8 : Bore Size N/A. Rexnord Industries, LLC, Coupling Group 497-108 5555 S. Browse QUICK FLEX Standard Hubs with Keyway - Inch (Imperial) Bores in the The Timken Company catalog including Part Number,Description ,Bore Size ,Coupling Size,Keyway Size (W x D),Length thru Bore,CAD. Nov. Do not excessively compress the coupling membranes during assembly. This Lovejoy standard jaw coupling hub replaces hubs on Lovejoy L type jaw style flexible couplings and is made of cast iron for non-corrosive applications where strength and heat dissipation are factors and weight is not. 126 - 150 of 257 | Results Per Page | View | Unit of Measure. Based on the usage of the coupling a keyway is made in the bore in order to. Metric External Table Chart Thread Designations Sizes M 1. Industry’s largest available selection from stock. 9375 BORE - STK 782934003424. Standard L Type coupling hub materials are either sintered iron (L035-L190) or cast iron (L225-L276). The shaft insertion depth l 2 is specified in the standard sheet of the respective coupling. 6552. On the enlarged portion, a brass bush of thickness 2 mm is pressed. 00075 in/in (mm/mm) interference up to 1800 rpm and 0. Effect of Keyways: A little consideration will show that the keyway cut into the shaft reduces the load carrying capacity of the shaft. Here we can calculate rigid connections, namely the pinned, keyed, splined and flanged ones. Unless stated otherwise, hub torque and horsepower ratings assume a SOX (NBR) rubber spider is being used. Nov. Short Rigid Couplings With Keyways. Given your application and the origin of the product/shaft in question, you should be able to quickly determine what standard applies to you. Design of Square Key and Keyway (Wood Ruff) Stress, Shear and Torque. Standard L Type coupling hub materials are either sintered iron (L035-L190) or cast iron (L225-L276). (Only for ATEX category 3) Design 2. • Torsional Stiffness for Standard TYRE-FLEX coupling 5 • Special features of various types of TYRE-FLEX 6. Browse Part Number 68514437263, L Type Hubs with Keyway - Inch (Imperial) Bores in the The Timken Company catalog including Part Number,Item Name,Disclaimer,Description,Description ,Bore Size ,Hub Style,Coupling Type,Coupling Size,Material,. Browse L Type Hubs with Keyway - Inch (Imperial) Bores in the The Timken Company catalog including Part Number,Description ,Bore Size ,Coupling Size,Keyway Size (W x D),Length thru Bore,Outside Diameter,CAD. The L Type coupling consists of two standard L Type hubs and one spider. Under this circumstance, the extra charge is designed to cover steps necessary to verify that the actual coupling balance meets the required balance criteria. Inch, metric, and inch to metric bores available in both clamp and set screw styles. Taper metric dimensions keyway key bs 1972 keyways keys. Also, T 1 and T 2. Helpful Resources. Couplings. •One of the flange has a projected portion and the other flange has a corresponding recess. Below is a PDF link and a list of the standard keyway dimensions provided if requested. Shop Flexible Shaft Coupling - Jaw, Set Screw and Keyway from MISUMI (Part Numbers). 2023. 025: h9: 0. length, 136700. The L Type coupling consists of two standard L Type hubs and one spider. Mill custom pulleys, threaded hubs, sprockets, collars, and sensor targets and mount them to shafts. Standard keyways provide added torque capacity and fixed shaft phasing. Couplings. couplings which have not been balanced. - Series EL couplings supplied withInstallation Video for Jaw Type Couplings. The sleeve coupling has few moving parts, making it a sturdy choice as long as all the parts are designed keeping in mind the expected torque values. 3 N-mm. Standard and/or project Stage TC; ISO 14:1982. Despite knowing the importance of this a very little research work has been reported in this field. If a key is added to the shaft and a. Installation Instructions for Jaw Type Couplings. Heavy machinery: Gearboxes, shaft couplings, and power transmission components. Standard L Type coupling hub materials are either sintered iron (L035-L190) or cast iron (L225-L276). Coupling Size: 75 : Set Screw Style Coupling Size (Dimension T) 3/8-16 : Set Screw Style Coupling Location Size (Dimension SL) 0. DOWNLOADS. 1 for Js9 Dimensions) Key & Keyway Dimensions – Millimeters Coupling Hub Keyway Dimensions – Inches Shaft DiameterRound keyed shafting: 1/2 dia. Fillet radii comply with AGMA 9002-A86. 1/8 keyway, 3 ft. MISUMI. 1/2 in x 1/4 in; 1/4 in x 1/8 in; 3/16 in x 3/32 in;. When overloaded, these limiters cause your sprocket or pulley to slip. Standard Coupling Collar Type / Size Hubs Spider or Cushions w/screws L/AL/SS 035 - L/AL/SS 276 2 1 --. Customers may specify a key size that is one size larger or smaller than the standard size specified by the ANSI-AGMA specifications. Shaft and hub keyway dimensionsWhat are shaft keyways, its characteristics and benefits Keys standard metric keyways mechanicalKeyway bores coupling wxh chains keyways. Designed for aligned shafts, the 2-Piece Clamp-Type Coupling makes two shafts function as one. Standard L Type coupling hub materials are either sintered iron (L035-L190) or cast iron (L225-L276). Keyway misumiKey and keyway dimensions (control in motion) Keyway sizing chartMetric key keyway dimensions. Installation Video for Jaw Type Couplings. Page 2 of 3 Lovejoy, Inc. Are there any standards for Metric bores and / or keyways? There many standards that cover the topics of metric bore tolerances, fits and keyway sizes. 281 2 . If you are looking for a comprehensive and reliable source of information on jaw type couplings, you should download the Jaw Type Catalog PDF from Lovejoy, a Timken company. Jaw Type Catalog (pdf catalog) Standard L Type coupling hub materials are either sintered iron (L035-L190) or cast iron (L225-L276). The keys are square or rectangular. MISUMI. The drive shaft diameter is 4 . Keyless coupling is more suitable compared to key coupling, and diameter of the shaft can be reduced. Maximum bore shown is the maximum bore with standard keyway . Coupling Keyway Size (W x D) Length thru Bore Outside Diameter CAD; 68514462792: Description N/A C226 HUB 30MM 8X3. The data in the standard considers commercially standard coupling bores and keyways, not special. Full-key balance. Cleanroom Wash / Cleanroom Packing Service. Browse Part Number 68514456178, L Type Hubs with Keyway - Metric Bores in the The Timken Company catalog including Part Number,Item Name,Disclaimer,Description,Description ,Bore Size,Coupling Size,Hub Style,Coupling Type,Material,Keyway Size (W. 1. Unit of Measure. The couplings are certified and conform to EC standard 94/9/EC (ATEX 95) as units of category 2G/2D and are suitable for use in hazardous areas. 2D. 1 standard up to size 14 Design 2. The length of the coupling hub keyway is 4 inches long and it is also 3/8″ deep. coupling keyway: Standard and Configurable Industrial Components from MISUMI. Products. 06 mm: Spider Outside DiameterANSI Hardware Deign and Engineering Data. 125 BORE - STK 782934002076. Only disc couplings and diaphragm couplings can be used. Square Drives for Socket Tools ASA B5. 3. 001″ of shrink fit for the most common shaft tapers is noted as follows: As an example, a hydraulic fit coupling with a 101. 120. Standard L Type coupling hub materials are either sintered iron (L035. 3D. With the bore code K, the keyway is always integrated into both bores d 2 and d 3. ROTEX GS backlash-free servo coupling - different hub designs. Item Number: ISCC-125-125-KW Clamping coupling with keyway. Metric Remachinable One-Piece Split Coupling with Keyways (22) Fully metric, including clamp screws. A rectangular sunk key is shown in Fig. Unless stated otherwise, hub torque and horsepower ratings assume a SOX (NBR) rubber spider is being used. Keyway Size. But ensure the weakened shaft can support the load. The L Type coupling consists of two standard L Type hubs and one spider. Keyway Selection: Analyze the system to determine whether radial alignment or extra torque will factor into overall operation, and use this information to determine whether a. MISUMI USA has all of your Flexible Shaft Couplings needs covered, with over 3. Coupling is a component used to connect a drive shaft and a driven part, for example, a motor shaft and a ball screw for the purpose of transmitting the torque. Keyways are not recommended by GAM as they can actually introduce backlash into machine systems overtime. 350 in 85. Universal Design Products. Standard L Type coupling hub materials are either sintered iron (L035. Unless stated otherwise, hub torque and horsepower ratings assume a SOX (NBR) rubber spider is being used. The two joints are connected by a third shaft, called the spindle. If other keyways are required, a shaft end detail drawing that shows the keyway. Used. Choose from our selection of clamping shaft couplings, including over 4,100. type couplings used with gas turbines in the power genera-tion or petrochemical industries. 02 mm: Overall Coupling Length: 8. 75 in Length: 5. Excessive vibration induced by mating machinery. This coupling comes completely apart to allow the most convenient assembly and adjustment. Coupling Size: 1080T Coupling Type: Grid Height: 6. Clamp-Type Couplings with Keyways are available with straight-through bores. Increase or reduce your shaft's diameter to fit equipment, or replace damaged shaft ends. 1, the Metric key size is W x T. For a shaft key to function properly, both the shaft and rotating elements ( gear, pulley, and coupling) must have a keyway and a keyseat. Designed for aligned shafts, the 1-Piece Clamp-Type Coupling makes two shafts. Days to Ship : 5. Along with keyway size tolerances and keyway depth sizes, some standards also provide information on the recommended key size and keyway depth as a function of shaft diameter. This catalog covers the features, benefits, dimensions, selection, and installation of various jaw type couplings, including the industry-standard L type. Get In Touch. "Technical videos by Ruland Manufacturing. Unless otherwise specified, the shaft keyway is assumed to be standard. The L Type coupling consists of two standard L Type hubs and one spider. Fillet radii comply with AGMA 9002-A86. The primary purpose of couplings is to join two pieces of rotating equipment while permitting some degree of misalignment or end movement or both. Designed for aligned shafts, the 2-Piece Clamp-Type Coupling makes two shafts function as one. 2 Exceptions . Author Colby Ratke Jr. 008″ less than the shaft). com web: Supersedes 4-96 Couplings † Steel Hub Boring, Keyseating, Setscrews & Puller Bolt Holes All Types (Page 3 of 8) TABLE 4 —. Standard External Metric Thread and Fastener Sizes M 0. The L Type coupling consists of two standard L Type hubs and one spider. The L Type coupling consists of two standard L Type hubs and one spider. API 671 Coupling Standard The gear coupling has the most axial displacement capability. to ISO standard H7, keyway acc. 2180 Corporate Lane, Suite 104 ~ Naperville, IL 60563 USA Phone (630) 596-9000 Fax (630) 596-9002 Keyway AGMA 9002-A86 Inch Bore and ANSI B17. Coupling Size Keyway Size (mm) Length thru Bore CAD; 88345046040: Description N/A QF5S303X10MM : Bore Size N/A 10 mm:. Standard L Type coupling hub materials are either sintered iron (L035-L190) or cast iron (L225-L276). I became chairman of the committee in the mid 1990s. Flange Couplings •A flange coupling usually applies to a coupling having two separate cast iron flanges. Tire Outside Diameter. If the insertion depth is too low, the shaft could slip out of the coupling, or the clamping hub could break. Ensure proper alignment of the broach and workpiece: Accurate alignment is crucial to avoid tool deflection and ensure consistent internal keyway dimensions. Flexible Shaft Coupling - Jaw, Set Screw and Keyway MISUMI •Application : Standard •Body Material : Aluminum •Allowable Misalignment : Angular, Axial, Eccentricity •Feature : High Torque, Low Moment of Inertia For complete product overview and details on Couplings - Jaw, Setscrew with Key Groove see the sections below:Standard L Type coupling hub materials are either sintered iron (L035-L190) or cast iron (L225-L276). • Procedure for Finish Bore & Keyway 29 • Standard tolerances for FBKW 31 • JAW-FLEX coupling selections equivalent to 32 Competitor’s Couplings . •Application : Standard. 800. Standard keys should be the same length or slightly longer than the keyway in the flange. 25 in Length: 3. Clamp-Type Couplings with Keyways are available with straight-through bores. C, Cotter Pin Hole has centerline. Installation Video for Jaw Type Couplings. Woodruff keys are usually shorter and may not transmit the same amount of torque. 375 in Keyway Fit: Commercial Keyway Width (in): 0. Once the overload is removed, the limiters automatically reset. Clamp-Type Couplings with Keyways are available with straight-through bores. sales@ruland. Below is a PDF link and a list of the standard keyway dimensions provided if requested. lengths, outside diameter of coupling against radial clearances . 37 in. Note: If using a standard bushing style flange for QD® or Taper-Lock® bushings, skip to Step 4. Installation Video for Jaw Type Couplings. I became chairman of the committee in the mid 1990s. with driven shafts of ball screws etc. 1, the Metric key size is W x T. The L Type coupling consists of two standard L Type hubs and one spider. 5 mm (4″) bore requires a 0. •Allowable Misalignment : Angular, Axial, Eccentricity. Browse Part Number 68514441331, L Type Hubs with Keyway - Metric Bores in the The Timken Company catalog including Part Number,Item Name,Disclaimer,Description,Description ,Bore Size,Coupling Size,Hub Style,Coupling Type,Material,Keyway Size (W. Rectangular keys. They are precision machined, non-marring, easy to. Milling may struggle with complex keyway profiles or non-standard. You will also find useful tables, charts, and formulas to help you. The L Type coupling consists of two standard L Type hubs and one spider. Standard L Type coupling hub materials are either sintered iron (L035-L190) or cast iron (L225-L276). Installation Video for Jaw Type Couplings. Mon - Fri: 8:30 am - 6 pm EST. snuggly in the keyway with minimal side to side movement. 3) Keyway fillet radius to be specified by customer. Shop Flexible Shaft Coupling - Jaw, Clamping and Keyway from MISUMI (Part Numbers). Installation Video for Jaw Type Couplings. 542. Check Details. pfeifer. The sunk keys are provided half in the keyway of the shaft and half in the keyway of the hub or boss of the pulley. See dimensions W and h in Figure 1. Unless stated otherwise, hub torque and horsepower ratings assume a SOX (NBR. Machine keyway to recommended size and tolerance listed per Table 5. 4235 : PART 1 : 1972 Where: T = D + T2. Metric key keyway dimensionsKeyway metric dimensions key iso tolerance js9 r773 width per depth hub t2 height radius text mill question answered. Unless stated otherwise, hub torque and horsepower ratings assume a SOX (NBR) rubber spider is being used. Related. Shop Flexible Shaft Coupling - High Positioning Accuracy Double Disc, Clamping/Keyway from MISUMI. 375 in Keyway Fit: Commercial Keyway Width (in. 000 with a keyway of 1 . Browse L Type Hubs without Keyway - Metric Bores in the The Timken Company catalog including Part Number,Description ,Bore Size,Coupling Size,Keyway Size (W x D),Length thru Bore,Hub Length,Outer Diameter,CAD. 2. Standard L Type coupling hub materials are either sintered iron (L035-L190) or cast iron (L225-L276). In this case, the coupling is drawn onto a balance fixture after the keyway has been machined, and is then balanced with an empty keyway. 0005 / -. Metric keyways are dimensioned by width and depth as measured from the radius of the shaft to the center of the keyway. Design 2. 30: Keys and keyways, splinesBrowse L Type Hubs without Keyway - Metric Bores in the The Timken Company catalog including Part Number,Description ,Bore Size,Coupling Size,Keyway Size (W x D),Length thru Bore,Hub Length,Outer Diameter,CAD. Browse Part Number 68514411519, L Type Hubs with Keyway - Inch (Imperial) Bores in the The Timken Company catalog including Part Number,Item Name,Disclaimer,Description,Description ,Bore Size ,Hub Style,Coupling Type,Coupling Size,Material,. The L Type coupling consists of two standard L Type hubs and one spider. 45mm) to 7 inches (178mm). 25 - M 1. 5. The slot is provided in the rotating shaft or in the hub or both of them to insert the key known as keyways. Page Count: 34. Standard keyways provide added torque capacity and fixed shaft phasing. If the insertion depth is too low, the shaft could slip out of the coupling, or the clamping. Metric keyways are dimensioned by width and depth as measured from the radius of the shaft to the center of the keyway. Accommodates for angular and parallel shaft misalignment. A rectangular sunk key is shown in Fig. •The faces are turned up at right angle to the axis of the shaft. Protected type flange coupling.