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Reamers

Introduction to Reamers?

Reamers are precision hole-finishing tools engineered to achieve tight tolerances, superior surface finishes, and repeatable bore accuracy. In applications where standard drilling cannot meet final dimensional or surface quality requirements, PCD and carbide reamers offer consistent, high-performance results across demanding materials.

Exactaform designs and manufactures bespoke PCD and solid carbide reamers, optimised for high-volume production in the automotive, aerospace, and advanced engineering sectors. Whether you’re machining aluminium, CFRP, or challenging alloys such as Inconel, our reamers deliver long tool life, high process security, and significant efficiency gains. With advanced geometries, optimised cutting-edge placement, and application-specific coatings, Exactaform’s reamers set the standard for precision, durability, and performance in critical machining environments.

Types of Reamers

Exactaform offers a range of PCD and carbide reamers, each engineered for specific machining applications. We also manufacture tapered, spiral-fluted, straight flute, and adjustable reamers, with options for advanced coatings, flute geometries, and chip breaker designs to optimise performance across materials.

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Step Reamers

Ideal for machining multiple hole diameters in one operation, reducing tool changes and improving cycle times. Often used with reamer drill bit setups in automotive and aerospace.

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Guided Reamers

Designed for exceptional straightness, roundness, and positional accuracy, especially when machining steels and structural alloys.

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Custom Size Reamers

Tailored to precise diameter and length requirements, ensuring flawless hole finishing in complex geometries.

Materials our reamers can be used for

PCD Reamers – Best for non-ferrous and composite materials:

Aluminium

Precision hole-making in engine blocks, cylinder heads, and transmission housings. Exactaform’s diamond-coated and PCD reamers ensure smooth surface finishes and tight tolerances in high-speed production environments.

CFRP (Carbon Fibre Reinforced Polymer)

Delivers clean, burr-free finishes while preventing delamination and fibre pullout. Particularly effective for blind holes, tapered bores, and lightweight composite assemblies.

Other Composites

Maintains high surface integrity in structural aerospace, motorsport, and industrial components with minimal material damage.

Carbide Reamers

Best for high-strength metals:

Exactaform’s PCD and carbide reaming tools offer exceptional tool life, process security, and dimensional precision, ensuring cost-effective, high-performance results across advanced engineering industries.

Titanium

Used in aerospace and motorsport parts where hole accuracy, concentricity, and finish are critical under high mechanical stress.

Inconel & Nimonic Alloys

Ideal for machining heat-resistant alloys used in turbines, exhaust systems, and engine assemblies.

Steel & Hardened Steel

Excellent for reaming drivetrain parts, shafts, and gearbox housings. Suitable for both CNC applications and manual setups with solid carbide or carbide-tipped reamers.

Bespoke Reamer Design

Exactaform specialises in custom reamer solutions, engineered to requirement and to overcome your machining challenges. Whether optimising for hole accuracy, cycle time reduction, or surface finish, our PCD and carbide reamers provide superior results.

Cutting Strategies & Cutting Data for reamers

Reaming requires precise control of cutting parameters to ensure optimal hole quality, tool performance, and repeatability. Feed rates, spindle speeds, and coolant strategies must be carefully adjusted based on material type, hole geometry, and tool design.

Exactaform’s technical team collaborates closely with engineers to fine-tune every aspect of the reaming process, delivering:

  • Superior surface finish quality
  • Reduced tool wear, even in tough materials
  • Consistent bore accuracy and roundness

We provide detailed guidance on selecting the correct reamer type - from modular and machine reamers to straight or tapered geometries - as well as appropriate reamer coatings for enhanced wear resistance. Whether you’re working with lightweight composites or high-strength alloys, our team ensures cutting data is tailored to your specific machining setup, supporting maximum productivity, tool life, and process security.

On-site and remote application support is available to help manufacturers optimise reaming strategies across automotive, aerospace, and advanced engineering operations.

Why Choose Exactaform for reamers

With decades of expertise in PCD and carbide tooling, Exactaform provides bespoke reaming solutions designed for maximum precision, longevity, and efficiency, backed by strategic cutting data support and expert engineering consultation.

FAQ’s