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1-3/8 x 7/16 radius corner round router bit from Amana Tool is a basic edge-forming router bit that rounds an edge to a 7/16 inch radius, so you get a consistent round over where the profile is specified. This corner-rounding bit cuts a fillet as it rounds, which creates a clean transition between the flat face and the curved edge for controlled visual detail. The bit diameter of 1-3/8 inch governs how much of the profile is presented to the work, helping manage feed feel and control on an edge pass. A cutting height of 5/8 inch allows the round over and fillet to be formed within that vertical range, which is useful when matching profiles along stock of typical thickness. The 1/2 inch shank seats in 1/2 inch collets, providing a solid grip in compatible routers for stable, repeatable profiling. An overall length of 2-9/16 inch gives adequate reach while keeping the setup compact in the collet.
This router bit uses a 1/2 inch shank, so it fits routers designed for 1/2 inch shank tooling, which keeps the bit centered for predictable rotation. The 1-3/8 inch diameter shows how far the cutting circle extends from the shank, guiding fence or bearing setups so the desired amount of material is removed on each pass. With a cutting height of 5/8 inch, the bit engages only that vertical portion of the edge, so the user can position the work so the round over and fillet fall exactly where the design calls for them. The 2-9/16 inch overall length supports mounting depth options while still allowing the full cutting height to be used in edge-forming applications.
The web description defines this bit as a basic edge-forming corner-rounding bit that rounds an edge to a given radius and cuts a fillet, so it serves wherever a consistent round over with a defined shoulder is part of the design. It states the cut can be used to ease edges, so this bit suits situations where sharp corners need softening for handling or appearance. The description also notes it can be used as a simple profile, meaning the single round over and fillet can stand alone as the finished edge on trim or panel work. It further indicates it can be used as part of a complex profile, so users can combine this 7/16 inch radius with other bits or passes to build up multi-step mouldings when the layout calls for layered shapes.
The description notes this tool is also known as a round over, rounding over, and quarter-round bit, so the 7/16 inch radius and overall form match common expectations when drawings or notes call for those terms. It specifies that if a smaller pilot bearing is used, a second shoulder can be produced, in effect making the bit a beading bit, so by changing the bearing diameter the same cutter can generate a bead profile where that secondary shoulder is desired. The D1 value of 1/2 inch identifies the bearing size used in the standard configuration, which tells the user how the factory setup will track along the work edge as it follows the surface. The 2-flute design, identified in the product name, provides two cutting edges that share the work, promoting a balanced cut path that helps maintain smoothness as the edge is formed along longer stock.
This corner-rounding bit rounds an edge to a 7/16 inch radius and cuts a fillet, producing a quarter-round style profile with a defined shoulder for consistent visual detail.
The bit becomes a beading bit when a smaller pilot bearing is used, which creates a second shoulder so the edge shows a bead form where that dual shoulder detail is specified.
The 1-3/8 inch diameter sets the cutting circle, influencing how much edge is engaged and guiding fence or bearing positioning to achieve the intended profile depth on each pass.
The 1/2 inch shank matches 1/2 inch router collets, providing more gripping surface so the bit runs with stable support during edge-forming and profiling operations.
The 5/8 inch cutting height limits how tall the round over and fillet can be, helping position the profile so it fits the thickness and design of the workpiece edge.
The 1/2 inch D1 bearing size defines how the bit pilots along the edge, so the amount of material removed and the shoulder position follow the bearing diameter.
The Amana Tool 49515 corner-rounding router bit provides a 7/16 inch radius round over with a fillet, so it aligns with drawings or existing work that call for that specific edge. With a 1/2 inch shank, 1-3/8 inch diameter, and 5/8 inch cutting height, it is configured for controlled profiling passes where those dimensions matter. For cabinet, furniture, or trim projects needing this radius or a bead created by changing to a smaller pilot bearing, this bit offers a defined, repeatable edge form ready for use wherever that profile is required.
Sold In: 1 Each
Quantity | Unit Price | Catalog | ||||
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Sold in: 1 Each |  AA47706 Mfr# 47706 | 3/16" x 1/2" Steel Ball Bearing Guide |