Replaceable wear plate

Abstract

Abstract REPLACEABLE WEAR PLATE A wear member (500, 500a) includes a body defining an exterior 5 (508, 508a) with an outside perimeter (510, 510a), an interior aperture (502) with an at least partially interior polygonal perimeter (504), and at least one fastener receiving hole (512, 512a) extending from the exterior (508, 508a) to the interior aperture (502). The exterior (508, 508a) lacks any large openings to limit the risk of material packing. 10 Abstract REPLACEABLE WEAR PLATE 5 A wear member (500, 500a) includes a body defining an exterior (508, 508a) with an outside perimeter (510, 510a), an interior aperture (502) with an at least partially interior polygonal perimeter (504), and at least one fastener receiving hole (512, 512a) extending from the exterior (508, 508a) to the interior aperture (502). The exterior (508, 508a) lacks any large openings to limit the risk 10 of material packing.20 25 25 99 80 31 O ct 2 02 5 2 0 2 5 2 5 9 9 8 0 3 1 O c t 2 0 2 5 R E P L A C E A B L E W E A R P L A T E 5 2 0 2 5 2 5 9 9 8 0 3 1 O c t 2 0 2 5 R E P L A C E A B L E W E A R P L A T E 5

Description

As shown in Fig. 24, wear member 16 may first be positioned on mounting base 22 in an offset position where projection 104 may be in inserted within rectangle-shaped portion 62 of first opening 60 to the left of notch-shaped portion 64. Wear member 16 may then be slid to the right in a second direction, as shown by arrow 174, into a mounted position. As wear member 16 is slid to the right, projection 104 may move from rectangle-shaped portion 62 of first opening 60 into notch-shaped portion 64 thereby engaging engagement surfaces 106, 108 of projection 104 with angled surfaces 76, 78 of notch-shaped portion 64 into an opposing interlocking relationship with each other. The mating of engagement surfaces 106, 108 and angled surfaces 76, 78 may form a dovetail like joint. 2025259980   31 Oct 2025 In the mounted position, rectangle-shaped portion 62 of first opening 60 may be brought in alignment with rectangle-shaped second opening 102 enabling insertion of retainer 24 through wear member 16 into position within rectangle-shaped portion 62 of first opening 60, as shown in Fig. 25. Retainer 24 may be inserted into rectangle-shaped portion 62 of first opening 60 in a third direction, as shown by arrow 176. With one end of retainer 24 being positioned in first opening 60 under one of the flanges 72, 74, a pry bar may be inserted at the other end of retainer 24. By applying a reasonable force to retainer 24 with the screw driver, retainer 24 may be sufficiently compressed in length to move the free end of the retainer 24 past the other flange and seat retainer 24 fully within rectangle-shaped portion 62 of first opening 60. When installed, retainer 24 may prevent movement, in the longitudinal direction 30 of wear member 16, relative to mounting base 22. Retainer 24 may prevent movement by maintaining the position of projection 104 within notch-shaped portion 64 of first opening 60. Following the installation of retainer 24, plug 26 may also be installed by insertion through rectangle-shaped second opening 102 in wear member 16. Wear member 16 may be uncoupled from mounting base 22 by performing the above steps in reverse. For example, first plug 26 (if installed) may be removed. Next, retainer 24 may be removed and then wear member 16 may be slid to the left until projection 104 is aligned with rectangle-shaped portion 62 of first opening 60. Once projection 104 is aligned, wear member 16 may be dropped away from mounting base 22. A new wear member 16 may then be installed. Another advantage of wear member system 14 is versatility. Wear member system 14 may protect a portion of both first surface 18 and second surface 20 of tool 12 at heel 15 or 17 utilizing just a single wear member 16. In contrast, single surface wear members often require two separate mounting bases and wear members, one for first surface 18 and one for second surface 20, in order to protect each heel section of the tool. Thus, wear member 2025259980   31 Oct 2025 system 14 may reduce installation time and cost by protecting both surfaces with one wear member and one mounting base. Yet another advantage of wear member system 14 and wear member 16 may be the one or more wear indicators 118 that may provide an indication of when wear member 16 should be replaced. In some applications, wear member 16 may experience different amounts of wear depending on the surface of wear member 16. As a result, it may be beneficial to have wear indicators 118 formed on multiple surfaces of wear member 16 and in multiple locations on the surfaces to provide wear indication at multiple locations. In some applications, it may be beneficial to periodically rotate the position of wear members 16 on tool 12 in order to achieve even wearing of wear members 16 and increase the usable life of each wear member. Referring to Figs. 29 and 30, there is shown a machine 200 (e.g., an electric rope shovel with a dipper that may use any of the embodiments discussed herein) having a carbody 202 (which may include a turntable 208) with a track system including a first track chain 204a and a second track chain 204b positioned at opposite sides of carbody 202. Machine 200 is shown in the context of an electric rope shovel having an operator cab 206, a boom 210, a lower end 212 of the boom 210 (also called a boom foot), an upper end 214 of the boom 210 (also called a boom point), tension cables 216, a gantry tension member 218, a gantry compression member 220, a sheave 222 rotatably mounted on the upper end 214 of the boom 210, a dipper 300, a dipper door 302 pivotally coupled to the dipper 300, a hoist rope 228, a winch drum (not shown), and a dipper handle 230. An electric motor controls the winch drum, causing the lowering or raising of the boom, dipper, and upward and downward movement of the dipper handle relative to the boom. Tracks 204a and 204b are part of a machine undercarriage 232 coupled with carbody 202 in a conventional manner. Each of tracks 204a and 204b include a plurality of coupled together track shoes forming endless loops extending about a plurality of rotatable elements. In a typical design, an idler 234 2025259980   31 Oct 2025 and a drive sprocket 236 will be associated with each of tracks 204a and 204b and mounted to a track roller frame 238. A plurality of track rollers 240 may also be mounted to roller frame 238, and are associated with each of tracks 204a and 204b to support machine 200 and guide tracks 204a and 204b in desired paths, as further described herein. One or more carrier rollers 242 (or track sliders) may also be associated with each of tracks 204a and 204b to support and guide the tracks opposite rollers 240 during operation. The unique design of tracks 204a and 204b and the overall track and undercarriage system of which they are a part are contemplated to enable machine 200 to operate in certain environments such as oilsands. While use in the machine environment of an electric roper shovel and dipper is emphasized herein, it should be understood that machine 200 might comprise a different type of machine. For instance, track-type tractors or even half-track machines are contemplated herein. Further still, machine 200 might consist of a conveyor or other type of machine wherein tracks are used for purposes other than as ground engaging elements. Also, the machine might be some type of hydraulic shovel, bulldozer, excavator, back hoe, etc. The dipper 300 is suspended from the boom 210 by the hoist rope 228. The hoist rope 228 is wrapped over the sheave 222 and attached to the dipper 300 at a bail 244. The hoist rope 228 is anchored to the winch drum (not shown). The winch drum is driven by at least one electric motor (not shown) that incorporates a transmission unit (not shown). As the winch drum rotates, the hoist rope 228 is paid out to lower the dipper 300 or pulled in to raise the dipper 300. The dipper handle 230 is also coupled to the dipper 300. The dipper handle 230 is slidably supported in the saddle block 246, and the saddle block 246 is pivotally mounted to the boom 210 at the shipper shaft (not clearly shown). The dipper handle 230 includes a rack and tooth formation thereon that engages a drive pinion (not shown) mounted in the saddle block 246. The drive pinion is driven by an electric motor and transmission unit (not shown) to extend or retract the dipper handle 230 relative to the saddle block 246. 2025259980   31 Oct 2025 An electrical power source (not shown) is mounted to the carbody 202 to provide power to a hoist electric motor (not shown) for driving the hoist drum, one or more crowd electric motors (not shown) for driving the crowd transmission unit, and one or more swing electric motors (not shown) for turning the turntable 208. In some cases, one electric motor powers all of the moving components of the shovel. Each of the crowd, hoist, and swing motors is driven by its own motor controller, or is alternatively driven in response to control signals from a controller (not clearly shown). The track chains 204a and 204b are considered to be well suited for work in hard underfoot conditions. To this end, the track chains 204a and 204b may be “high ground pressure” tracks, each having track members durable enough to support a relatively large weight of machine 200. Each of track shoe members has a footprint defined in part by front and back edges, and also defined in part by outboard edges and inboard edges. Each of track shoe members may further include a ground contact area that is equal to its footprint, or less than its footprint only to an extent that adjacent track shoes overlap one another or due to voids disposed on the bottom surface of the track shoe member. Other configurations of the track shoes and track chain assemblies are possible in other embodiments of the present disclosure. As can be imagined both external and internal wear members may experience abrasion and packing. So, further embodiments will now be discussed that may limit the wear and packing in harsh abrasive environments such as oilsands, etc. However, it is to be understood that these embodiments are equally applicable to other environments and applications. Such embodiments may have a bolt-on wear member (may also be referred to as a cover) with a dovetail fastening subassembly that replaces the dovetail on the wear member as described earlier herein, allowing the wear member to fit the same mounting base. This cover can drop right down on top of the base. The cover then uses all four sides of the base to take the loads, as opposed to the earlier embodiments discussed herein, where the wear member 2025259980   31 Oct 2025 only uses 3 sides of the base to take the loads, with the spring retainer taking the load on the fourth side. The wear member may eliminate the larger openings disclosed herein that may allow packing to occur. Fig. 30 shows a plurality of wear members and wear member mounting systems installed on the bottom floor of the interior of the dipper. Turning now to Figs. 31 thru 43, a wear member mounting system 400, 400a constructed according to two different embodiments (e.g., system 400 may be larger than system 400a) of the present disclosure can be seen. Such a wear member mounting system 400, 400a may comprise a mounting base 700 (e.g., see Fig. 32) including an at least partially external polygonal perimeter 702 (other shapes for the perimeter are possible including arcuate), an interior weld receiving aperture 704 (e.g., may have an elongated oval slot shape or racetrack shape, but other configurations, placements, and a plurality are possible), and at least one dovetail slot 706, 706a (may open up or enlarge onto the bottom surface 712). A wear member 500, 500a (e.g., see Fig. 31 and 40) may be provided that is configured to be attached to the mounting base 700 by dropping it onto the mounting base instead of sliding it onto the mounting base. To that end, the wear member 500, 500a may define an aperture 502 on its lower surface 506, 506a (e.g., see Figs. 36 and 40, may be a blind aperture that only extends to the bottom surface to help reduce packing) with an at least partially interior polygonal perimeter 504 that is configured to mate with the at least partially external polygonal perimeter 702 of the mounting base 700. Other configurations for these perimeters are possible in other embodiments of the present disclosure. The wear member mounting system 500, 500a may also include at least one dovetail fastening subassembly 600, 600a (e.g., see Figs. 31, 32, 33, 34, 43, 44, one subassembly 600a may be smaller than the other subassembly 600, etc.) including a dovetail member 602, 602a with a body that is configured to at least partially complementarily fill the at least one dovetail slot 706, 706a of the mounting base 700, and that defines a fastener receiving aperture 604, 604a 2025259980   31 Oct 2025 extending through the body that has a round portion 606, 606a and a non-round portion 608, 608a. In some embodiments as shown, the round portion 606, 606a includes a cylindrical clearance hole 610, 610a (610a has about a 18.0 mm diameter for receiving a M16 bolt while 610 has about a 22.0 mm diameter for receiving a M20 bolt), while the non-round portion 608, 608a may include a plurality of flat surfaces 612, 612a angled relative to each other. More specifically, these flat surfaces may accommodate a hex head of a bolt for preventing its rotation during the assembly process, etc. Looking at Figs. 37 and 41, the at least one dovetail slot 706, 706a includes a pair of angled sidewalls 708, and the body of the dovetail member 602, 602a may include a pair of sloped surfaces 614, 614a that mate with (i.e., may contact or nearly contact) the angled sidewalls 708. As shown, a clearance of 2.0 mm may be provided, but not necessarily so. That is to say, the design may be line to line or a pre-load may be provided, etc. The shape of these features may not necessarily be flat, but could be arcuate such as when a pin round style dovetail or partially pin round style dovetail is employed. Also, a T-slot styled dovetail with right angled surfaces may be employed, etc. Referring back to Fig. 32, the mounting base may include a top surface 710, and a bottom surface 712 (so called since this surface is nearest the mounting surface of the work tool). At least one dovetail slot 706 may be disposed inside the at least partially external polygonal perimeter 702, and is in communication with a T-slot that extends through the top surface 710 and the bottom surface 712 of the mounting base 700. The T-slot 712 may be omitted in other embodiments of the present disclosure. Another dovetail slot 706a may extend through the top surface 710 and the bottom surface 712, while also extending to the at least partially external polygonal perimeter 702. This may not be the case in other embodiments of the present disclosure. For example, either dovetail slot may be omitted or both slots may be disposed toward the interior of the mounting base 700, etc. 2025259980   31 Oct 2025 Figs. 33 and 43 show that the dovetail member 602, 602a may include a rectangular pad 616, 616a extending upwardly from the pair of sloped surfaces 614, 614a, forming a top surface 618, 618a. Also, the pair of sloped surfaces 614, 614a may extend to a bottom surface 620, 620a. The round portion 606, 606a of the fastener receiving aperture 604, 604a extends from the top surface 618, 618a, whereas the non-round portion 608, 608a of the fastener receiving aperture 604, 604a extends from the bottom surface 620, 620a to the round portion 606, 606a. Specifically, the round portion 606, 606a may include a cylindrical clearance hole 610, 610a, while the non-round portion 608, 608a may include a plurality of flat surfaces 612, 612a angled relative to each other. For example, these surfaces may be configured to mate with a hex head or a square head of a bolt, or the like. Other configurations are possible in other embodiments of the present disclosure. In the field, the wear member mounting system 400, 400a is typically assembled by first attached the mounting base 700 to a surface of a work tool (e.g., via welding). Then, the dovetail fastening subassembly(s) 600, 600a are placed into the dovetail slot(s). If the dovetail slot includes a T-slot, then the subassembly is inserted down into the T-slot and slid until it reaches the dovetail slot. If the dovetail slot is at the perimeter, then the subassembly is simply slid into the dovetail slot. Next, the wear member 500, 500a is placed down onto the mounting base, allowing the fasteners to pass through its counterbores 526, 526a. Nuts 636, 636a are then tightened to secure the wear member. The dovetail fastening subassemblies need to be assembled first if not already supplied in the assembled state. The fastener would simply need to be inserted through the bottom surface of the dovetail member until its head reaches the partial counterbore with flat surfaces. In practice, a wear member, a mounting base, a dovetail fastening subassembly, a wear member mounting system, and / or any component thereof may be sold, manufactured, bought etc. in the aftermarket or original equipment 2025259980   31 Oct 2025 scenarios according to any of the embodiments discussed herein. That is to say, the machine may be sold with the dipper, and / or wear member mounting system, etc. according to embodiments described herein or the machine may be retrofitted, repaired, or refurbished to use any of the embodiments discussed herein. Similarly, any dipper or other work tool may be retrofit or repaired using any embodiment of the present disclosure. For example, a wear member 500, 500a that may be provided as a replacement part may comprise, as shown in Figs. 31, and 36-42, a body defining an exterior 508, 508a with an outside perimeter 510, 510a, an interior aperture 502 with an at least partially interior polygonal perimeter 504, and at least one fastener receiving hole 512, 512a extending from the exterior 508a to the interior aperture 502. As best seen in Figs. 36 and 40, the at least partially interior polygonal perimeter is formed by a series of fit pads 514 that form a rectangular configuration (pads may be disposed at the corners of the rectangular configuration, and may protrude about 25.0 mm) with an aperture depth 516 (see also Figs. 38 and 42), an aperture width 518, and an aperture length 520. A ratio of the aperture width 518 to the aperture length 520 may range from 0.75 to 0.90 in some embodiments of the present disclosure. Other ratios are possible for smaller and bigger applications, etc. More particularly, the aperture length 520 may range from 155.0 mm to 235.0 mm, the aperture width 518 may range from 118.0 mm to 200.0 mm, and the aperture depth 516 may range from 18.0 mm to 29.0 mm. Other dimensional ranges are possible in other embodiments of the present disclosure. A pair of the series of fit pads 514 are separated along a direction parallel with the aperture length by a pry slot 522 (see also Figs. 36 and 42) including an angled pry surface 524. With continued reference to FIGS. 36 and 42, the fastener receiving hole 512, 512a may take the form of a counterbore 526, 526a defining a larger diameter portion defining a large diameter 528, 528a, and a small diameter 2025259980   31 Oct 2025 portion defining a small diameter 530, 530a. A ratio of the large diameter 528, 528a to the small diameter 530, 530a may range from 2.0 to 2.75 in some embodiments of the present disclosure. When present, it may easier to clean the counterbore out with the head of the fastener present in the counterbore, easing disassembly. This may not be the case for other embodiments of the present disclosure. Referring now to Fig. 38, the fastener receiving hole 512 defines a diameter (e.g., large diameter 528) that is spaced away a minimum distance 532 from the outside perimeter 510. A ratio of the minimum distance 532 to the diameter 528 may range from 0.77 to 0.92 in some embodiments of the present disclosure. This ratio may balance the cleaning benefit just discussed and the structural integrity of the wear member. This ratio may not be necessary in some applications where cleaning or structural integrity are not an issued (such as when a suitably durable material is used, etc.). As best seen in Figs. 35, 36, 39 and 40, the outside perimeter 510, 510a may define an upper sloping portion 534, 534a, a pair of side recess 536, 536a, and a bottom notch 538. A lifting eye 540, 540a may be disposed in each of the pair of side recesses 536, 536a. Also, the outside perimeter 510, 510a defines a first projection 542, 542a between the upper sloping portion 534, 534a, and the lifting eye 540, 540a, as well as a second projection 544, 544a between the bottom notch 538, and the lifting eye 540, 540a. Moreover, the wear member includes a bottom surface (or lower surface 506, 506a, see Figs. 36 and 40) defining a first cavity 546, 546a on the bottom surface at the first projection 542, 542a, and a second cavity 548, 548a on the bottom surface at the second projection 544, 544a. These cavities may core out excess material, which may reduce cost and help to prevent problems associated with the casting process including voids, porosity, sinks, etc. Also, this overall outside perimeter is not purely rectangular or square, which may help the wear member(s) grab onto material, encourage filling of the bucket, and decrease the likelihood of packing material underneath the 2025259980   31 Oct 2025 wear member into the attachment structure. This may provide more efficient wear protection than simply shaped wear members known in the art. It should be noted that the sectioned planes of Figs. 38 and 42 may also represent planes of symmetry for the wear member. Accordingly, various features such as those just discussed may be mirrored about these planes, but not necessarily so. Looking at Figs. 35 and 39, it may be understood that the outside perimeter 510, 510a defines a width 550, and a length 552, 552a. A ratio of the width 550 to the length 552, 552a may range from ranges from 1.05 to 1.32 in some embodiments of the present disclosure. In such a case, the length may range from 275.0 mm to 350.0 mm, the width may range from 360.0 mm to 370.0 mm, and the body may define a thickness 554 (see Fig. 38) that ranges from 70.0 mm to 80.0 mm. Other ratios and dimensional ranges are possible in other embodiments of the present disclosure. In the assembled state, 1.0 mm of clearance may be provided between the mounting plate and the sides of the aperture of the wear member, with 5.0 mm of clearance being provided near the front of the assembly (area near the bottom notch 538). These clearances may be adjusted. Turning to Figs. 33, 34, 43, and 44, the dovetail fastening subassembly 600, 600a that may be provided as a replacement or a retrofit in the field may comprise a dovetail member 602, 602a including a body that has an at least partially pyramidal configuration (e.g., sloped surfaces 614, 614a, with flat side surfaces 624, 624a, etc.) defining a fastener receiving aperture 604, 604a extending through the body that defines a surface of revolution 626, 626a, and a surface of non-revolution 628, 628a. The subassembly may further comprise a bolt 630, 630a with a head 632, 632a, and a shaft 634, 634a. The head 632, 632a matches the surface of non-revolution 628, 628a, while the shaft 634, 634a matches the surface of revolution 626, 626a. As a result, the bolt may pass through the dovetail member exposing its free end that is externally threaded. A nut 636, 636a may be 2025259980   31 Oct 2025 threaded onto the shaft, which remains stationary due to the matching of the head with the surface of non-revolution. Examples of the bolts that may be employed include a M16 bolt, a M20 bolt, etc. Figs. 37 and 45 provide a general example of what the bolted joint would look when assembled. A washer (638, 638a) is also provided. The stress profile 640 in Fig. 45 has been determined by the inventors to be acceptable for at least some applications. A mounting plate 700a that may be provided as a replacement or retrofit in the field is shown in Fig. 32. The mounting plate 700a may comprise a plate body defining a plate length 716, a plate width 718, and a plate thickness 720 that is less than the plate length 716 and plate width 718. The plate body may further define an internal dovetail slot (e.g., see 706), an external dovetail slot (e.g. see 706a), a T-slot that 714 is in communication with and partially forms the internal dovetail slot, and an elongated slot 722 that is disposed between the T-slot 714, and the external dovetail slot along a direction parallel with the plate length 718. A pair of pry slots 722 may be disposed on either side of the external dovetail slot (e.g. see 706a) along a direction parallel with the plate width 716, and an elongated pry slot 726 that is disposed proximate to the internal dovetail slot (e.g., see 706) along a direction parallel with the plate length 718. FIG. 46 illustrates that the floor 503 of the bottom aperture 502 may not be contiguous or flat, but instead may have a plurality of surfaces positioned at different levels. For example, the floor 503 may include a series of mounting pads 556 (e.g., four of them positioned at each corner of the aperture 502), a pair of shallow pockets 558 (e.g., may have a depth of 30.0 mm or less) disposed between a pair of the mounting pads, each pocket surrounding a fastener receiving aperture or hole, and a large clearance pocket 560 (e.g., may have a depth of greater than 30.0 mm) in the middle of the aperture 502 that separates 2025259980   31 Oct 2025 one set of mounting pads and pockets from another set. Other configurations are possible in other embodiments of the present disclosure. While the arrangement is illustrated in connection with an electric rope shovel, the arrangement disclosed herein has universal applicability in various other types of machines commonly employ track systems, as opposed to wheels. The term "machine" may refer to any machine that performs some type of operation associated with an industry such as mining or construction, or any other industry known in the art. For example, the machine may be an excavator, wheel loader, cable shovel, or dragline or the like. Moreover, one or more implements may be connected to the machine. Such implements may be utilized for a variety of tasks, including, for example, lifting and loading. As used herein, the articles “a” and “an” are intended to include one or more items, and may be used interchangeably with “one or more.” Where only one item is intended, the term “one” or similar language is used. Also, as used herein, the terms “has”, “have”, “having”, “with” or the like are intended to be open-ended terms. Further, the phrase “based on” is intended to mean “based, at least in part, on” unless explicitly stated otherwise. It will be apparent to those skilled in the art that various modifications and variations can be made to the embodiments of the apparatus and methods of assembly as discussed herein without departing from the scope or spirit of the invention(s). Other embodiments of this disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the various embodiments disclosed herein. For example, some of the equipment may be constructed and function differently than what has been described herein and certain steps of any method may be omitted, performed in an order that is different than what has been specifically mentioned or in some cases performed simultaneously or in sub-steps. Furthermore, variations or modifications to certain aspects or features of various embodiments may be made to create further embodiments and features and aspects of various embodiments may be added to 2025259980   31 Oct 2025 or substituted for other features or aspects of other embodiments in order to provide still further embodiments. Accordingly, it is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention(s) 5 being indicated by the following claims and their equivalents. Reference to any prior art in the specification is not an acknowledgement or suggestion that this prior art forms part of the common general knowledge in any jurisdiction or that this prior art could reasonably be expected to be combined with any other piece of prior art by a skilled person in 10 the art. As used herein and except where the context requires otherwise, the term "comprise" and variations of the term, such as "comprising", "comprises" and "comprised", are not intended to exclude further additions, components, integers or steps. 15

Claims

1. A wear member mounting system comprising:a mounting base including:an at least partially external polygonal perimeter, an interior weld receiving aperture, and at least one dovetail slot;a wear member defining:an aperture with an at least partially interior polygonal perimeter that is configured to mate with the at least partially external polygonal perimeter of the mounting base; andat least one dovetail fastening subassembly including:a dovetail member having:a body that is configured to at least partially complementarily fill the at least one dovetail slot; anda fastener receiving aperture extending through the body that defines a round portion and a non-round portion, wherein the at least one dovetail slot includes a pair of angled sidewalls, wherein the body of the dovetail member includes a pair of sloped surfaces that mate with the angled sidewalls, andwherein the dovetail member includes a rectangular pad extending upwardly from the pair of sloped surfaces, forming a top surface, and wherein the pair of sloped surfaces extend to a bottom surface.

2. The wear member mounting system of claim 1, wherein the interior weld receiving aperture includes an elongated oval slot shape.

3. The wear member mounting system of claim 1 or 2, wherein the mounting base includes a top surface, and a bottom surface, and the at least one dovetail slot is disposed inside the at least partially external polygonal perimeter, and is in communication with a T-slot that extends through the top surface and the bottom surface of the mounting base.2025259980   31 Oct 2025384. The wear member mounting system of claim 3, wherein the at least one dovetail slot extends through the top surface of the mounting base and the bottom surface of the mounting base, and also extends to the at least partially external 5 polygonal perimeter.

5. The wear member mounting system of any one of claims 1-4, wherein the round portion of the fastener receiving aperture extends from the top surface of the dovetail member, and the non-round portion of the fastener receiving aperture 10 extends from the bottom surface of the dovetail member to the round portion.

6. The wear member mounting system of claim 5, wherein the round portion includes a cylindrical clearance hole and the non-round portion includes a plurality of flat surfaces angled relative to each other.15

Images