BB2055 Spiral Flute Solid Carbide Reamer | 1–6mm

BB2055 Spiral Flute Solid Carbide Reamer

Precision carbide reamer for small-diameter CNC hole finishing from 1 to 6 mm. The spiral-flute geometry is designed to support smoother cutting and chip movement during finishing of pre-drilled or pre-bored holes.

Key Features

• Solid carbide construction: provides rigidity and wear resistance for precision reaming.
• Spiral flute geometry: supports progressive cutting action and chip flow during hole finishing.
• Small-diameter range: available from 1 to 6 mm with multiple length options.
• 3T / 4T configurations: flute count varies by diameter and listed variant.

Typical Applications

• Precision finishing of small pre-drilled holes
• CNC reaming of small mechanical components
• Applications requiring improved final hole consistency
• Short and extended-reach hole-finishing operations depending on selected variant

How to Read the Size

Variants use formats such as 1.5×15×38×3T or 3×60×100×4T. The first value is the nominal reamer diameter, followed by the listed length dimensions and flute count.

Machining Notes

Reamers are finishing tools. Prepare a consistent pre-hole allowance, use rigid low-runout toolholding and select cutting speed, feed and lubrication according to workpiece material and target tolerance. Avoid excessive stock removal with the reamer.

Need help selecting a size or length? Send BB Tool your finished-hole diameter, tolerance, material and pre-hole size for guidance.