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Solid Carbide Reamer

High Precision Spiral Flute Reamer H7 Carbide Reamer Bit 4mm For Steel

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Carbide Boring Tool

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High Precision Spiral Flute Reamer H7 Carbide Reamer Bit 4mm For Steel

Brand Name:	AMG
MOQ:	3-10PCS
Packaging Details:	Plastic tube
Payment Terms:	T/T/Credit Card

Detail Information

Product Description

Detail Information

Place of Origin:

CHINA

Certification:

ISO9001

Name:

Spiral Flute Reamer

Type:

Reamer For Steel

Coolant Type:

Inner Coolant

Application:

H13, A136, P20, H13 Steel

Shank Precision:

Material:

Carbide

Supply Ability:

30000-100000pcs per month

Highlight:

H7 Spiral Flute Reamer Bit

Steel Spiral Flute Reamer Bit

4mm Spiral Flute Reamer Bit

Product Description

High Precision Spiral Flute Reamer H7 Carbide Reamer Bit 4mm For Steel

Attribute	Value
Name	Spiral Flute Reamer
Type	Reamer for steel
Coolant type	Inner coolant
Application	H13, A136, P20, H13 steel
Shank precision	H7
Material	Carbide

Product Overview

This high-precision solid carbide reamer features a 4mm diameter and 30mm flute length, optimized for CNC machining applications requiring tight tolerances (H5-H7) and superior surface finishes. The spiral flute design ensures efficient chip evacuation, while internal coolant channels enhance tool life and performance in hardened steels, stainless steel, and other tough alloys.

Key Features

Premium Solid Carbide Construction - Micro-grain carbide substrate (K10/K20 grade) for maximum wear resistance with sub-micron grain structure ensuring edge retention in high-speed machining
Spiral Flute Design (30° Helix Angle) - Optimized chip evacuation prevents clogging in deep-hole applications while reducing cutting forces for smoother finishes (Ra ≤0.4µm achievable)
Through-Tool Coolant - 2-4 precision coolant channels (Ø1.0mm) direct lubricant to cutting edges, supporting high-pressure coolant (70+ bar) for heat dissipation in hard materials
Extended 30mm Flute Length - Ideal for deep-hole reaming (L:D ratio up to 7.5:1) with reduced deflection compared to standard-length reamers
High-Precision Ground Edges - H5-H7 tolerance compliance (ISO 286) with ±0.005mm runout for ultra-precise bore finishing

Applications

Aerospace: Turbine blade cooling holes (Inconel 718), hydraulic valve bodies
Automotive: Fuel injector nozzles, transmission gear bores
Medical & Energy: Surgical instrument precision holes, oil/gas valve components
Mold & Die: Ejector pin holes in hardened tool steel (HRC 50+)

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