Carbide Reamers

Engineered for tight tolerance hole finishing, Retop carbide reamers deliver unmatched surface finish, dimensional accuracy, and extended tool life in high-speed machining.

Product Description

Carbide reamers are precision cutting tools used to enlarge or finish existing holes to an exact diameter with high concentricity and smooth surface finish. Made from ultra-hard tungsten carbide, these reamers offer excellent wear resistance and rigidity, even when machining hardened steel or abrasive materials. Retop manufactures both solid and brazed carbide reamers with various flute geometries to meet complex manufacturing requirements.

Carbide reamers are essential in industries such as automotive, aerospace, mold making, medical devices, and high-precision manufacturing. They are commonly used for finishing holes in engine blocks, transmission components, hydraulic parts, valve bodies, injection molds, and medical instruments. Their ability to maintain tight tolerances makes them ideal for critical fit applications.

Features

Manufactured from premium sub-micron tungsten carbide
Helical, straight flute, and left-hand spiral options available
Coolant-through design enhances chip evacuation and surface finish
Excellent dimensional stability under high-speed conditions
Custom diameters, shank types, and flute lengths on request

Specifications

Specification	Value
Material	Solid Tungsten Carbide (WC+Co)
Hardness (HRA)	91 – 93
Tolerance	±0.002 mm
Diameter Range	Ø 0.8 mm – Ø 50 mm
Flute Types	Straight / Helical / Spiral
Coolant Channel	Optional (Internal / External)
Coating	TiAlN / TiSiN / DLC / Uncoated
Applications	Automotive, Aerospace, Mold, Medical

Why Choose Retop as Your Supplier?

At Retop, we deliver precision reaming solutions with consistent quality and performance. With over 14 years of experience in carbide tooling, we utilize state-of-the-art CNC grinding, advanced inspection systems, and proprietary grade formulations to meet the strictest tolerances in the industry. Our engineering team supports full customization from geometry to coatings, and we are committed to fast lead times and responsive support—trusted by clients in over 50 countries.