H7 Left-Hand Spiral Flute Solid Carbide Reamer | 1–12mm

H7 Left-Hand Spiral Flute Solid Carbide Reamer

This solid carbide reamer is designed for precision finishing and final sizing of prepared holes. The H7 designation, spiral-flute geometry and broad 1–12mm size range make it suitable for CNC hole-finishing applications where consistent diameter control and a clean finished surface are required.

Key Features

• Solid carbide construction
• H7 precision series
• Left-hand spiral-flute geometry
• Wide 1–12mm diameter range
• Suitable for final sizing of pre-drilled or pre-bored holes
• Multiple shank, flute-length and overall-length combinations by diameter

Size & Variant Guide

Variant names follow the tool dimensions shown in the selector. A typical format is:

Diameter × Shank × Flute Length × Reach/Neck × Overall Length – Flutes

Example: 3 × D4 × 15 × 25 × 50 – 4T

• 3 = cutting diameter
• D4 = 4mm shank diameter
• 15 = flute/cutting length
• 25 = reach or neck dimension as listed for the variant
• 50 = overall length
• 4T = 4 flutes

Please select the exact diameter and dimensional combination required for your hole and toolholding setup.

Applications

• Precision hole finishing
• Final sizing after drilling or boring
• Small-diameter CNC reaming
• Applications requiring H7-series finished-hole control

Important Selection Note

This product is listed as a left-hand spiral-flute reamer. Confirm the required cutting direction, spindle setup and tool geometry for your machine before ordering. Do not select it only by diameter if your process requires a different reamer configuration.

How to Choose the Correct Size

1. Confirm the required finished-hole diameter and tolerance.
2. Check the selected variant's cutting diameter, shank diameter and overall length.
3. Make sure the available reach is sufficient for the hole depth.
4. Confirm the reamer configuration is compatible with your machining setup.

Usage Notes

A reamer is a finishing tool, not a drilling tool. Use it after the hole has been prepared by drilling, boring or another suitable operation. Reaming allowance, speed and feed depend on the workpiece, hole geometry, rigidity and machine setup.

Related Reamers

• All Reamers
• Straight Flute Carbide Reamers
• Blind-Hole Reamers
• Left-Hand Reamers

FAQ

What does H7 mean?
H7 is the tolerance designation used for this reamer series. Always match the required finished-hole tolerance to your drawing and process requirements.

Can this reamer drill a hole from solid material?
No. It is intended for finishing and sizing an existing prepared hole.

How do I choose the correct diameter?
Select the reamer according to the required finished-hole size and verify the full variant dimensions, including shank, flute length and overall length.

Is the left-hand spiral version interchangeable with other reamers?
Not automatically. Confirm the required flute direction, cutting direction and machine setup before ordering.

Original Product Notes

BF2055 H7 Left-Hand Spiral Flute Carbide Reamer for Aluminum

This BF2055 left-hand spiral-flute solid carbide reamer is designed for precision finishing of prepared holes in aluminum, aluminum alloys and other relatively low-hardness non-ferrous materials. The left-hand configuration must be matched to the machine rotation and setup; it should not be selected interchangeably with a standard right-hand reamer.

Key Features

• BF2055 series for aluminum and non-ferrous machining
• Left-hand reamer configuration
• Spiral flute geometry for controlled chip movement
• H7 series designation
• Solid carbide construction

Important Selection Note

Confirm spindle rotation, flute direction and cutting direction before ordering. A left-hand reamer requires a compatible machine setup and should not be substituted for a standard right-hand tool.

Application Notes

Use for final sizing of an existing prepared hole only. Reaming allowance and cutting conditions depend on the material, hole geometry and machine setup.