Product Description
CMT Diamond Compression Router Bit - 5/8 in. Diameter, 5/8 in. Shank by CMT is a high-performance CNC router cutter engineered for clean, chip-free cutting on both faces of composite panels and fiber-reinforced materials. Featuring a compression spiral geometry with a shear angle, this diamond-tipped bit cuts upward and downward simultaneously, delivering finish-quality results on demanding materials like fiberglass, carbon fiber, and solid surface panels. Built with super strength steel and a 1+1 cutting edge configuration (3DP + 1HW), it is designed specifically for heavy-duty CNC routing applications where edge quality and long tool life are critical.
Key Features
- Diamond Compression Spiral Geometry with Shear Angle - cuts both the top and bottom face of a workpiece simultaneously, eliminating tearout and producing finish-ready edges on composite panels in a single pass.
- 1+1 Cutting Edge Configuration (3DP + 1HW) - combines diamond polycrystalline cutting edges with a hardmetal edge for an aggressive yet precise cut, extending usable tool life when routing abrasive materials like fiberglass and carbon fiber.
- Diamond Polycrystalline (DP) Cutting Edge Material - diamond-grade hardness far outlasts standard carbide in abrasive composite materials, reducing the frequency of bit changes and downtime on the CNC machine.
- Super Strength Steel Body - provides a rigid, vibration-resistant platform that supports accurate, repeatable cuts at CNC routing speeds.
- 5/8 in. x 50mm Shank - the extended 50mm shank length gives secure tool holding in CNC collets, reducing runout and improving cut consistency across long production runs.
- Right-Hand (RH) Rotation - compatible with standard CNC routing machine spindles, making setup straightforward without special toolholding adapters.
- 1-1/16 in. Cutting Height - accommodates a range of composite panel thicknesses in a single pass, reducing the need for multiple depth-of-cut setups.
Why This Product
- The diamond polycrystalline cutting edges make this bit the right choice for routing highly abrasive materials - fiberglass, carbon fiber, and solid surface panels - where standard carbide bits wear rapidly and require frequent replacement.
- The compression spiral geometry with shear angle solves the common problem of tearout and delamination on composite panels, producing clean top and bottom faces without secondary finishing operations.
- With a 5/8 in. diameter and a 5/8 in. x 50mm shank, this bit fits securely in CNC router collets sized for production-grade tooling, supporting stable, high-repetition cutting without chatter.
- The 1+1 (3DP + 1HW) edge combination balances diamond cutting performance with structural durability, making this bit appropriate for shops that route fiber-reinforced and hard composite materials on a regular production schedule.
Specifications
- Manufacturer Part Number: 140.158.61
- Brand: CMT Orange Tools
- Product Type: Diamond Compression Router Bit
- Diameter: 5/8 in.
- Cutting Height: 1-1/16 in.
- Total Length: 3-11/32 in.
- Shank: 5/8 x 50mm
- Number of Teeth: 1 + 1
- Cutting Edge Material: DP (Diamond Polycrystalline)
- Edge Configuration: 3DP + 1HW
- Rotation: Right-Hand (RH)
- Body Material: Super Strength Steel
Approved Applications
- CNC routing of composite panels
- Cutting fiber-reinforced materials
- Heavy-duty CNC routing operations
- Routing fiberglass and carbon fiber
- Cutting Corian and solid surface materials
Frequently Asked Questions
What makes a diamond compression bit different from a standard carbide compression bit?
This bit uses diamond polycrystalline (DP) cutting edges in a 3DP + 1HW configuration, which provides significantly greater hardness and abrasion resistance than standard carbide. This makes it well suited for routing materials like fiberglass, carbon fiber, and composite panels that would quickly dull a conventional carbide bit. The compression spiral geometry adds the benefit of clean cuts on both the top and bottom face in a single pass.
What CNC router shank collet does this bit require?
This bit uses a 5/8 in. diameter shank with a 50mm shank length, so it requires a CNC router collet sized for 5/8 in. tooling. The 50mm shank length is standard for production CNC toolholding systems.
What is the maximum material thickness this bit can cut in a single pass?
The cutting height of this bit is 1-1/16 in., which is the maximum depth of cut achievable in a single pass. For composite panels or fiber-reinforced sheets at or below that thickness, the full cut can be completed without repositioning the depth of cut.
Is this bit designed for handheld routers or CNC machines?
While the 5/8 in. shank is physically compatible with routers that accept a 5/8 in. collet, this diamond compression bit is engineered specifically for CNC routing machines where precise feed rates and controlled spindle speeds can be maintained. The diamond cutting edge configuration and compression geometry are optimized for the consistent operating conditions of CNC routing, particularly when working with abrasive composite and fiber-reinforced materials.
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