About this product
Precision Freud 1-7/64 Inch Top Bearing Cove and Bead Groove Router Bit 39-504 with 3/8 Inch Shank
The Freud 39-504 1-7/64-Inch Diameter Top Bearing Cove and Bead Groove Router Bit operates as a commercial-grade template routing tool engineered to execute plunge cuts and trace top-mounted patterns for decorative architectural profiles on cabinet doors, drawer fronts, and custom millwork. Manufactured with micrograin TiCo High-Density Carbide cutters coated in friction-reducing Red Perma-SHIELD non-stick finish, this intermediate 3/8-inch shank bit features a shank-mounted steel ball bearing pilot, a 1/2-inch carbide height, and an 18,000 RPM maximum speed rating. Compatible with handheld portable routers and router table setups equipped with a 3/8-inch collet, this two-cutter pattern bit delivers precise template-guided tracking across solid hardwoods, softwoods, plywood, and wood composites.
Best Used For:
- Top-Template Cabinet Door Profiling: Tracing patterns mounted on top of workpieces to plunge-rout decorative flat-bottom cove and bead grooves into cabinet panel faces.
- Architectural Drawer Front Detailing: Milling wide decorative surface channels and classic border profiles across hardwood drawer fronts using overhead jigs.
- Custom Millwork & Faux Panel Routing: Following template curves to cut detailed architectural accent grooves into furniture components without edge fences.
Key Performance & Safety Features
- Top Shank-Mounted Ball Bearing: Overhead pilot bearing tracks templates secured on top of the workpiece for direct visual alignment during plunge routing.
- Cove and Bead Profile Geometry: Cuts a classical dual-radiused profile with a flat bottom for decorative architectural panel accents.
- TiCo High-Density Micrograin Carbide: Proprietary titanium-cobalt carbide formulation maintains razor-sharp edges up to four times longer than standard carbide bits.
- Red Perma-SHIELD Thermal Barrier Coating: Non-stick fluoropolymer coating insulates the bit body against heat buildup, pitch accumulation, and rust corrosion.
- Intermediate 3/8-Inch Steel Shank: Designed specifically for 3/8-inch router collets to provide increased rigidity over standard 1/4-inch shank bits.
- Computer-Balanced Dynamically Balanced Body: Precision-balanced tool body eliminates vibration and chatter marks at speeds up to 18,000 RPM.
What's Included
- (1) Freud 39-504 1-7/64" Diameter Top Bearing Cove and Bead Groove Router Bit with 3/8" Shank
Technical Specifications
Brand Name Freud Model Number SKU 39-504 Product Tool Classification Top Bearing Cove and Bead Groove Router Bit Overall Cut Diameter (D) 1.109375 in. (1-7/64 in.) Shank Diameter (A) 0.375 in. (3/8 in.) Carbide Cutting Height (h) 0.500 in. (1/2 in.) Overall Bit Length (H) 2.250 in. (2-1/4 in.) Large Radius Profile (R1) 0.15625 in. (5/32 in.) Small Radius Profile (R2) 0.125 in. (1/8 in.) Small Tip Diameter (n) 0.65625 in. (21/32 in.) Number of Cutting Flutes 2 Carbide Wings Maximum Rotational Speed 18,000 RPM (Speed Adjustment Required) Protective Body Finish Red Perma-SHIELD Non-Stick Coating Carbide Grade Composition TiCo High-Density Micrograin Carbide Machine Equipment Compatibility Handheld Plunge Routers, Router Tables with 3/8" Collet Target Substrates Hardwood, Softwood, Cabinet Plywood, MDF, Wood CompositesPro-Tip: When routing top-template decorative grooves into cabinet panels with this 3/8-inch shank bit, make sure your router is fitted with a dedicated 3/8-inch collet rather than a reduction bushing. Using a true 3/8-inch collet maximizes clamping surface area, keeping the shank-mounted top bearing tracking smoothly without slip at 18,000 RPM.
Description supplied by 1 Top Tools through its current Shopify listing. Product, performance, and health claims are the seller’s and have not been independently verified by StorkScout.






