BB2055 PRO Carbide Reamer 4–12mm | Blind Hole | Spiral Flute | CNC Machining

Integral Micrograin Cemented Carbide

Manufactured from micrograin cemented carbide in a single forming process. Provides improved vibration resistance and reduced tool breakage risk in blind hole reaming applications.

Fully Ground Cutting Edge

All cutting edges are precision ground for consistent dimensional accuracy and smooth surface finish. Reduces burr formation and improves hole quality in blind hole operations.

Dual Specification: Steel & Aluminum

Available in steel-optimized (BB2055) and aluminum-optimized (BF2055) variants. Select the appropriate specification based on workpiece material for improved cutting performance.

Non-Circular Cutting Edge Geometry

Precision-ground non-circular cutting edge profile. Reduces contact area with the hole wall, lowers cutting resistance, and produces clean, burr-free blind holes.

Nanocomposite Coating

Nanocomposite coating applied to all cutting surfaces for improved wear resistance, thermal stability, and oxidation resistance. Suitable for continuous cutting in steel and alloy materials.

Six-Flute Configuration

Six-flute design distributes cutting load evenly across the tool. Improves surface finish and dimensional consistency in blind hole reaming. Multiple diameter specifications available from 4mm to 12mm.

Fixed Straight Shank

Precision-ground straight shank for secure clamping. Compatible with standard CNC tool holders, drilling machines, and milling machines.

Applicable Scenarios

Mold manufacturing • Mechanical component machining • CNC precision hole finishing • Aluminum alloy • Die-cast aluminum • Carbon steel • Stainless steel • Cast iron • Pre-hardened steel