BF2055 Spiral Flute Solid Carbide Reamer for Aluminum | External Coolant | 2.23–4.09mm

BF2055 Spiral Flute Solid Carbide Reamer for Aluminum

Precision carbide reamer for finishing pre-drilled or pre-bored holes from 2.23 to 4.09 mm. This BF2055 series combines spiral-flute geometry with external coolant for CNC hole-finishing applications in aluminum and similar non-ferrous machining conditions.

Key Features

• Solid carbide construction: provides rigidity and wear resistance for precision reaming.
• Spiral flute geometry: supports progressive cutting and chip movement during finishing.
• External coolant: designed for setups using conventional coolant delivery around the tool.
• Fine diameter coverage: many sizes are available in 0.01 mm increments.
• 4-flute design: the listed variants use 4T geometry.

Typical Applications

• Precision hole finishing in aluminum components
• Final sizing of pre-drilled or pre-bored holes
• CNC machining where external coolant is used
• Small-diameter production reaming requiring close size selection

How to Read the Size

Variants use formats such as 2.23×D4×15×25×50-4T. The first value is the nominal reamer diameter, followed by the listed shank and length dimensions and flute count.

Machining Notes

Maintain a suitable and consistent reaming allowance, use rigid low-runout toolholding and provide reliable external coolant or lubrication. Cutting speed and feed should be selected according to workpiece material, hole condition and target tolerance.

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