BBC Post or SBC Post, various keyway configurations available; Flange Styles: Star or Full Round; Rod Journal Sizes Available: 1. 3/8"-16. 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 Slightly larger than the size listed, these oversized keys offer a tight fit in worn keyways. ASME B5. 73 1 . Undersized Machine Key Assortments 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. The collar rests on top of the workpiece rather than being supported from below. --keyway dimensionsKeyway chart diagram hallite. Do not chamfer setscrew hole, deburr with a file. 97 5 . Corrosion-Resistant MiniatureRoller Chain and Links. Keyway dimensions metric key js9 iso tolerance per hub radius width depth diameter nominal thru hasn answered question yet beenKeyway keyways clubrunner bores wxh 3/16" x 3/32 keyway keyed shaft 7/8" x 6" metals & alloys businessKeyway bore modification service inch additional ka standard diameter. Clean delicate surfaces inside tubes, pipes, and holes. Setscrew Size & Keyway Size By Bore Size* The standard serscrew size and keyway size is based on the bore size of the sprocket. 424 Minimum 2. The data in the standard considers commercially standard coupling bores and keyways, not special coupling bores and keyways that may require special tolerances. These are available by quote only. 1/8 keyway, 3 ft. 5020 2. S. BS 46 Rectangular Taper & Gib Head KeyWay & Key Dimensions All Dimensions in inches. These keys have a rounded shape that makes them easy to remove when parts need to be taken apart frequently, such as for maintenance or prototyping. 5020 2. Undersized Machine Key Assortments 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. 0mm Metric, Standard. 003, -. BS 5686:1986, ISO 14-1982: Specification for straight-sided splines for cylindrical shafts: metric nominal dimensions, tolerances and gauging requirements. 1 Standard Keyway Dimensions; Torque Ratings; Service Factors; ANSI B18. Our largest broached keyway width is 1. #2 specifications and containingRound bore OEM Weld on Hubs are furnished with standard keyways and 2 set screws. Compact Portable Lever-Operated Hole Punch Sets. sales@aimsindustrial. Keyway Sizes for Flexible Couplings, AGMA 512. Gear Products and Suppliers | Gear Knowledge Menu. 888, 2. S. Choose from our selection of rectangle keys, including over 950 products in a wide range of styles and sizes. Where a key is to be used it should be parallel and side fitting with top clearance. 619 Satin nickel. standard mounting assembly for qd sheaves and sprocketsKeyways Key Systems Keyway Types 4 keyway multiplex system. British Standard :BS 46 Part 1 : 1958 Keys and keyways and taper pins. Keyway dimensions metric key js9 iso tolerance per hub radius width depth diameter nominal thru hasn answered question yet beenKeyway keyways clubrunner bores wxh 3/16" x 3/32 keyway keyed shaft 7/8" x 6" metals & alloys businessKeyway bore modification service inch additional ka standard diameter. Considering the different size options and the many different sizes of keyways, fit needs to be broken down into three distinct categories. 001 - . Step bore combinations including inch to metric are also available. grease meeting the n. metric key keyway dimensions engineers edge web where t d t2 related british iso metric screwQuantity Trim Lock Cylinder Pins Keyway Keyset Hand Thickness Finish 50 AUR 8805FL K100 6 XX AA1 RHR 1-3/4" 626 Collar - 1765 furnished standard when ordered with lockset. Unless otherwise specified, the shaft keyway is assumed to be standard. The new catalogue 18. d Tolerance Class Shaft t1 Hub t2. All dimensions are in inches. Depending on the slot width tolerance, the following fit or seating results in combination with the parallel key:English Standard Keyway and Key Sizes. Unless otherwise specified, the shaft keyway is assumed to be standard. Elliptic curve cryptographyMechanical engineering archive Manufacturers ih8mud beware puristsShaft keys. Table 9. (Dimensions comply with DIN 6885/1) † Requires use of chamfered keys. Special lengths are also available . 3mm * 10. 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. Slightly larger than the size listed, these oversized keys offer a tight fit in worn keyways. Min. 8mm 3. Use our Metric Keyway Calculator or Imperial Keyway Calculator to work out the stresses in parallel key and keyway. 1. 188" 1/4" 5/16" 0. One of the following methods should be used to specify keyways: Metric: WxH Key W x T2 Keyway British: WxH12 Key W x H Keyway ISO Standard-mm Imperial -Inches * Groove dimensions for woodruff keys DIN 6888 in accordance with DIN 6885 Sheet 1 (with back clearance) BS 4235 Pt. 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. The above chart provides typical Baldor•Reliance motor dimensions. 260". 3D Printing & CAD. Often used to hang motors from conveyor belts and other driven equipment, or to connect long sections of shafts, these couplings eliminate the need for support brackets. Min. i. 1265 0. 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. Keys and keyways BS 46 Part 1 : 1958 Square Keys and keyway Dimensions all dimensions in inches. Published byShaft Key Seat Depth Control Values S and T for Shaft and Hub ANSI B17. 005" Color. As with all SFIC cylinders, they are an industry standard format that fits any brand SFIC cored lockset. 2-1967. To ensure an adequate factor of safety in the design of a shaft with standard keyway (width, one-quarter, and depth, one-eighth of shaft diameter), the former Code for Transmission Shafting tentatively recommended that shafts with keyways be designed on the basis of a solid circular shaft using not more than 75 percent of the working stress. Straight-sided splines for cylindrical shafts with internal centering — Dimensions, tolerances and verification. Woodruff key cutter size chartStandard woodruff keys Shaft standard key sizes rectangular gates keys diameters most non std readily availableKeyway key. 3) Keyway fillet radius to be specified by customer. The dimension from the top of the keyway to the opposite bore side, “T-dim”, is calculated from (refer to ANSI/AGMA 9002-B04) the following: T = bore + (h kw - Ch) Nearly every shaft diameter has a corresponding standard keyway width and depth – this calculator helps you find it. Adapt the bore of a component to a smaller size for mounting on a shaft. xls Author: paul Created Date:scope: This Standard covers requirements for square and rectangular parallel keys and keyways intended for both alignment of shafts and hubs, and transmitting torque between shafts and hubs. KeyWay: d: b x h width x thck: Width b: Depth: Radius r : Nom: Tolerance Class: Shaft t 1: Hub t 2: Over:Lock nuts requiring a keyway . 000" andStandard Practices- Reading Direction All dimension and note text must be oriented to be read from the bottom of the drawing (relative to the drawing format). 120. Keys covered by this Standard have a relatively tight width tolerance. These explain the sizes and dimensions required by. Woodruff key cutter size chartStandard woodruff keys Shaft standard key sizes rectangular gates keys diameters most non std readily. Keys and keyway Dimensions. The dimensions and tolerances of keys of sizes 4 4 to 40 22 covered in IS : 2048-1975 were exactly the same as those covered in IS : 2710-1975, which specification was applicable to machine tools. Ref Standard . 240 0. T. bore and key chart, keyway chart, keyway sizes. by Crystal Bemis on August 1, 2022. About Us. 0mm to 26. Key KeyWay. 57" 1. 010 Height (d) (t) - DIM Keyway Width (w) AGMA 9002-A86 Inch Bore and ANSI B17. 015/-0. 085 kNm (754 in-lbs) to 377 5 kNm (3,341,562 in-lbs) . keyways available upon request. 886. 0625 0. Usual IEC sizes. In stock and ready to ship. It may be mildly magnetic. You will also find. ANSI Number Roller Width Roller Dia . Dimensioning and Tolerancing Engineering Product Definition and Related Documentation Practices AN INTERNATIONAL STANDARD ASME Y14. Also known as step-cone pulleys, these have multiple groove sizes so you can quickly change rotation speed by moving your belt to a different groove. B +0. It divides the standard module into three series. Straight-sided splines for cylindrical shafts with internal centering — Dimensions, tolerances and verification. Model Sizes Model Sizes Model Sizes Model Sizes Series 52, 54RD & 54RDG 125 AMR / CMR 162-200 AMR / CMR 225-1550 DBZ 163-451 DBZ 50-126 Series 52, 54RD & 54RDG 162-200 Series 52, 54RD & 54RDG 225-1300 Original Thomas design features round profile with evenly-spaced or paired bolt holes . 44 Descriptors : fasteners, cotter Pins, dimensions, specifications. Sunday: closed. Size. 1 9. 14–15 Pull Type Production Keyway Broaches A full line of Industry Standard 500 and 600 Series and 5M and 6M Series Keyway Broaches are available. 5000 2. Clean delicate surfaces inside tubes, pipes, and holes. Key dimensions: Parallel keys are most commonly used. Finished bore hubs can also be2. Specification. 187 5 . 1 Square Keyway Tolerances Minimum 2. Read Standard Bore and Keyway Tolerances Inch and mm xls. In the absence of specific details, manufacturing will be based upon DIN 6885 - T1. Check Details. In general, the dimensions containedKeyway 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. Slightly smaller than the size listed in the table, undersized stock is the choice when you need a slightly looser fit or when you have an inconsistent keyway. Use the middle of the shaft with bearings and other round-bore components. is the Unified (UN) thread form. Refer Metric sizes M200 - M280 for new applications. 1875 inches deep, 0. pdf Shaft diameterKey steel pulleys belts metric transmissions stationaryengineparts. Standard keylengths (mm) 6 - 8 - 10 - 12 - 14 - 16 - 18 - 20 - 22 - 25 - 28 - 32 - 36 - 40 - 45 - 50 - 56 - 63 - 70 - 80 - 90 - 100 - 110 - 125 - 140 - 160 - 180 - 200 - 220 - 250 - 280 - 320 - 360 - 400. 5 5 5 5 dimensions (mm) shaft la b5 flange b14 flange t 6313/6313 6313/6313 6318/6313 6318/6313 l e c b h a 3 d db eg m p n t 45° la s b14 flange s. 56 4 . All of the measurements listed on the product pages in inches without the keyway width or depth. 8750 hub diameter, and the fl ange face to end of hub dimension of 5. 5020 2. 32 products. Keyway. This standard prescribes the dimensions of threaded centre holes with 60° countersink. One set screw is centered on the keyway and the other at 90 degrees. Thickness of web. au; Australia’s One-Stop Shop for Industrial & Engineering Supplies. 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. 3 12 8. Cutting Tools. BS 4235 Pt. The following is listing of those standards: Standard Description BS4235 P Woodruff keys and keyways – same as ISO 391 BS46P1 Specifications, Keys and Keyways – obsolete CSAB232 Keys and Key seatsThe following is summarized from the American National Standard Keys and Keyways for Milling Cutters and Arbors ANSI/ASME B94. 1265 0. 000 +. Woodruff keys are usually with splines and the L-LOC spline clamping feature, see section 7. We carry a wide range of products with keyways, including bushings and roller chain sprockets. 5 in–lbs (0. dard and must be ordered. Keyways Index. 90 3. See dimensions W and h in Figure 1. ANSI B17. The deviations are less than the basic size. . Max. In general, the dimensions contained 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. Account. 8mm 2. keyways available upon request. 2. Nominal Shaft Diameter. 6 - M 18. The keys are square or rectangular. 1. Vibration-Damping Mounts. . ANSI Number Roller Width Roller Dia . i. 100 HUB 18mm BORE X 6mm KEYWAY METRIC. They are also often used on tapered shafts. 375-24 tapped bolt holes, 6. Non standard bores and over the keyways. Because they're usually shorter than. com 15 Cleveland Steel Tool recommends the use of Keyways for positive alignment of shaped punches. 004, -. Recommended uniform relationship between shaft diameter and key sizes for parallel and taper keys. All dimensions in mm. Accepts shaft sizes from 10 mm (0 . info@tnnengineering. All-Section Key. Note: Broaches have a. 5 NONE 0 . If we are to improve the prole keyway end design we should move away from the circulardiameter, a keyway sidth of . 1, the Metric key size is W x T. This catalog covers the features, benefits, dimensions, selection, and installation of various jaw type couplings, including the industry-standard L type. ISO/TC 14. Square keys. length, 136700. Interference Fit Bore Tol. Drive shaft Design, key and Keyways. Keyway and Key Size Dimensions * Common dimension specification English Standard Keyway. 5° angle. bxh Radius r. 3 10 8. Choose from our selection of keyway shafts, including keyed rotary shafts, partially keyed rotary shafts, and more. Standard Keyway Dimensions Shaft Diameter Set Screw Width Depth Up through 7/16" 8-32 3/32 3/64 Over 7/16" to and including 9/16" 10-24 1/8 1/16 Over 9/16" to and including. ). Taper per Ft. Standard Keyway Dimensions Shaft Diameter Set Screw Width Depth Up through 7/16" 8-32 3/32 3/64. 2500 0. 350 Maximum 2. The hub keyway is dimensioned by its width and depth on the shaft – keyway sides. 5" bore. *Setscrew @ 90 Degrees to Keyway (No Setscrew Over Keyway) For Standard Keyway Dimensions Refer to Table on P age A-2 steel reducing bushings LENGTH O. 5-2018 (Revision of ASME Y14. Shear Couplings. 95. 003" 0. Clean delicate surfaces inside tubes, pipes, and holes. standard plug diameter of 1⁄2". See Fig. This Standard covers the size, type and tolerances of parallel and taper keys and keyseats, and their relationship to shaft diameters and bore diameters. 2 mm, but the shaft had a keyway. 14 3 . ASME B1. A list of standard keyway and corresponding key sizes for English shafts are listed below in Table 1. 0. --. We already entered the "D38999/" prefix so you don't have to. Nominal Dia. Keys covered by this Standard have a relatively tight width tolerance. Order in 1/2 7/16 1-1/4Variations of machine keys include parallel keys, tapered keys, Woodruff keys, hi-pro keys, and non-rok keys. American National Standard T-Nuts per. 2: Tolerances: KM/KML Metric thread, 5H: ISO 965-3 Axial run-out locating face/thread: 0,02 to 0,06 mm max. Keyway. 12 mm. Nominal. Unless otherwise specified, linear dimensions are expressed in millimetres and angular dimensions in degrees. 5020 2. Unless otherwise specified, the shaft keyway is assumed to be standard. Specification for metric keys and keyways – Parallel and taper keys BS 4235-1:1972; Matching the woodruff key to the shaft diameter is also specified in DIN 6888 British ISO Metric Screw Threads Designations. Thursday: 8:00 am - 6:00 pm (ET) Friday: 8:00 am - 5:00 pm (ET) Saturday: closed. 48 products. which can accommodate different sizes of couplings. The torsionally flexible jaw coupling ROTEX Standard is an elastomer coupling with feather keyway and particularly low-cost due to its simple structure. - Series EL couplings supplied with Parallel Metric Keys and Keyway Dimensions - Roy Mech. Parallel keys are the most widely used machine key. DIN 6885-1 :- Key, Hub Keyway, Shaft Keyway Details and Dimensions. Shaft key end metric round machine lot long 6mm m32Key set Metric llaves draper piezasHex key set wrench metric piece tools. keyway dimensions). The keyway dimensions are also different from the English. 3mm 2. All of the measurements. Coping with foreign bore and. 2 Woodruff Key Size Table Chart ANSI B17. Table of Contents General Usual IEC sizes Mechanical tolerance. The fewer the choices, the easier it is on engineers. 7mm SurLok Plus™ Right Angle Plug without shielding and no HVIL, orange, 25mm² cable,KeyWay /Key Dimensions. Possesses an oval-shaped point on the end opposing the flush. 0 Cart. Choose from our selection of sheaves, including over 2,300 products in a wide range of styles and sizes. 4 Nm) to a maximum torque rating of 170,004 in–lbs (19209 Nm) and a bore range of . available in the popular sizes . 80. and 25mm and Type AFS sizes up to 11/2 inch are in stock. The unit to indicate the sizes of spur gears is. 6 : 621. 1250 0. Here you can find the dimensions, torque ratings, and more for our products. Imperial Standard Bore and Keyway Info Service Manuals. - Series F couplings supplied with 4) All dimensions per AGMA 9002-A86 interference fit bores without set screws commercial standards. Title: keyway dimensions. Width W. n When referencing the Lovejoy UPC number in this table, include 685144 as a prefix to the number shown. ANSI Woodruff Keys. 2 7-1,2 1. 0010. • Standard and double-ended spacer couplings available for shaft separations of 25 . Here at MDS, we offer A, B, 3VX, and 5VX belts. 55 9. The key should fit snuggly in the keyway with minimal side Standard keys should be the same length or slightly longer than the keyway in the hub. Keyway Dimensions. Metric Key Keyway Dimensions; Parallel Key and Taper Keys. 1875 × 0 . 202 to 1012 Height Width Diameter Actual Length Full Radius Flat Bottom Distance Key Below Center No. Metric keyways are dimensioned by width and depth as measured from the radius of the. 6 Dimensions of tangential keys and keyways 16 7 Dimensions of keys and keyways for marine tailshafts 17 8 Keys and keyways for tapered shaft ends 19 Appendix A Preferred lengths of keys 20 Appendix B Approximate equivalents of metric and inch units 22 Figure 1 — Variation in keyway depth in taper shaft 19 Figure 2 — Types of key and. Keyway Chart. 375 0. . U-Joints. 1M Table of dimensions and tolerances, Inch and (metric) mm units. This standard describes sizes and tolerances for straight and tapered bores and the associated keys and keyways, as furnished in flexible couplings. 375" and keyway is 0 . 062 0. The disc packs are non-unitized, These explain the sizes and dimensions required by different keyway families according to different manufacturers, and the charts are used in the making of keyways to ensure correct sizing. For example, a common keyway size for a shaft with a diameter of 1 inch might be 0. Nearly every shaft diameter has a corresponding standard keyway width and depth. 1. 6 - M 18. Technically, Chevy did. 35 9. 875 6. Diameter D. If this chart does not include a cutter that meets your specifications, simply order keyway broach, stating size of keyway and hole, material to be broached and. Integral keyways do NOT work on certain applications and so are recommended for OEM replacement only. One part of the Shaft key fits into a precut slot in the shaft known as a key seat and the other part fits into a slot in the hub called a keyway. . Shaft and hub keyway dimensionsShaft spline splines drive engineering manufacturing shafts involute manufacturer custom diameter terminating correct profile way enterprises Shaft key standard sizes rectangular gates keys diameters most non std readily availableShaft key and keyway:amazon. 3125 0. 1 ScopeThis British Standard relates to the following types of keys and keyways with dimensions in millimetres: 1) square parallel,2) rectangular parallel,3) square taper, gib-head and plain,4) rectangular taper, gib-head and plain. Also known as a keyway nibbler. Undersized Machine Key Assortments 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. Series 500 and 600 Standard Keyway Broach ChartDownload a Printable Keyway Chart. 850, 1. 5 +. Unless otherwise specified, the shaft keyway is assumed to be standard. Web Key Calculation A key of 8 mmx 7mm by 70mm long is selected. 0 The hub keyway is dimensioned by its width and depth on the shaft – keyway sides. Y. Keyway chart sizing key machine engineering keyways shaftKey and keyway dimensions (control in motion) Keys & keyways specificationKeyways keys dimensions metric parallel tolerances. keyways /keys dimension in accordance with BS 4235-1:1972: Specification for metric keys and keyways - Parallel and. Model Sizes Model Sizes Model Sizes Model Sizes Series 52, 54RD & 54RDG 125 AMR / CMR 162-200 AMR / CMR 225-1550 DBZ 163-451 DBZ 50-126 Series 52, 54RD & 54RDG 162-200 Series 52, 54RD & 54RDG 225-1300 Original Thomas design features round profile with evenly-spaced or paired bolt holes . 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 8NPTM200 Std. PARALLEL KEY DIMENSIONS - METRIC - BS4325:1 1972The following table lists the dimensions that are needed to design the customer shaft. This standard is incorporated in the American Boat and Yacht Council (A. ) Millimeter Bore Inch Bore Bushing Stock Bore Range Maximum Standard Shallow Minimum Keyway Keyway #Important — The metric system does not refer to keyseat or keyway dimensions as does the English. Eight times straighter than standard rotary shafts, these tight-tolerance shafts minimize vibrations and reduce wear to bearings and other components. Address. 95 7. 250"+. The ‘M’ here basically signifies metric units - an M8 x 12mm grub screw will be 8mm wide at the major (outer) diameter of the thread, and 12mm long. The intent of ANSI/AGMA 9002A86 was to offer designers and users standard dimensions and - tolerances for inch bores, keys and keyways for flexible couplings. height d t dim keyway width w agma 9002 a86 inch boreKeyway metric key iso dimensions standard keyways keys r773 pdf bores shaft hub depth diameter standards engineering table edge width. Shaft Keyseats/Hub Keyways Standard Keyseats/Keyways. 005, -. 5 mm. 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 — Metric key keyway dimensions per iso/rtt3 js9 width Metric plated Metric woodruff keys are supplied to din 6888 / iso 3912 in c45k key. BS 4235 Pt. Key. 187 1 . INCHES 1/2 1/4 1-1/8 1/2 5/16 1-1/8 For all 1" Fixed Bore Single Groove Sheaves. 424 Minimum 2. Keyway Standards Bore and Keyway dimensions comply with ANSI/AGMA 9002-B04 Standard. Gib head keysStandard keyway sizes chart Gates belts, hoses, and applications: standard & non-standard shaft keyWoodruff ansi fasteners nominal. A complete coupling consists of two hubs and one spider, or two hubs,. Keyway misumiKey and keyway dimensions (control in motion) Keyway sizing chartMetric key keyway dimensions. 35 7. Inside Link Plate Height Cottered Chain Width* Riveted Chain Width* Average Tensile Strength Standard Series Chain 100 3/4 . 48 products. Setscrews are placed over key at 90˚ to the key unless otherwise. Check Details. See charts for proper size and depth. Square keys. Keyway Sizes for Flexible Couplings, AGMA 512. Drive keys down with several hammer taps on the proper installation tool. 9375 - 1 . 99: ISO/TC 14: ISO 3117:1977. Keyway dimensions and set-screw locations. 002 - . 19 Shaft and Arbor Class A and B All dimensions. Size, grade and types of bolts required 4. - Series F couplings supplied with 4) All dimensions per AGMA 9002-A86 interference fit bores without set screws commercial standards. 000. Dec. The depth required for your project is dependent on plank spans and loading requirements. ← Keyway Size Chart Pdf Standard Metric Keyway Size Chart Pdf →. A negative number in this description means this has an integral keyway, so no separate key will be needed to anchor the pulley. Undersized Machine Key Assortments 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. Keyway: The width of the key used to anchor the pulley to a shaft. US bricks are known for their durability, strength, and variety of colors. Straight Sided Spline Dimensions. by damian. Google Rating. If customer shaft contains a shoulder, the installation length = (L8 - 1mm) or (L8 - 0.