Reamers

Precision Reamer — H7, 6 Flute

Six flutes and a ground H7 tolerance for holes that have to come out on size and stay there.

Material grade Sub-micron carbide, K20
Coating TiAlN / uncoated
Flutes 6
Diameter range Ø3–20 mm (H7)
Helix angle Straight
Tolerance H7 hole, h6 shank
Shank h6 ground
Application Hole finishing
Suitable for Aluminum Cast Iron Steel

Reply within 24 hours on business days · Samples available before volume · NDA on request

About this tool

A reamer has one job: arrive at a dimension and repeat it a thousand times. Six flutes support the cut so the bore does not bell-mouth or chatter, and a carbide body holds the size where HSS would drift.

Where it works

Through holes and blind bores requiring an H7 fit in steel, cast iron and non-ferrous materials.

Cutting data — starting point

Starting values for a rigid setup with a good coolant supply. Treat them as a first trial, then adjust to the machine, the holder and the actual condition of the material.

Work material Cutting speed vc Feed Depth of cut
Carbon steel (P) 20–40 m/min 0.15–0.40 mm/rev 0.1–0.3 mm stock
Cast iron (K) 20–40 m/min 0.20–0.50 mm/rev 0.1–0.3 mm stock
Aluminium (N) 40–80 m/min 0.20–0.50 mm/rev 0.1–0.3 mm stock

What you can specify

  • Diameter, corner radius and flute count ground to your drawing
  • Coating — AlCrN, AlTiN, TiAlN, DLC or uncoated, matched to the workpiece
  • Shank — h6 ground, HA / HB / whistle-notch
  • Laser-marked part number, or blank shanks for distributor stock

Not sure about the geometry? Send the drawing or a photo of the part. We recommend the profile, the coating and the starting cutting data — and quote from there.

Why it works

  • Ground to H7 and inspected against gauge before shipping
  • Six flutes support the cut and reduce chatter in the bore
  • Carbide body holds size through long production runs
  • Straight flutes suit through holes and interrupted bores
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Chucking Reamer — Carbide, H8

A general-purpose H8 reamer for hole finishing where the fit is less critical than the surface.

Ø4–20 mm (H8) · 6 · Uncoated

Can't find the geometry you need?

Most of what we ship is ground to a drawing. Send yours — we quote within 24 hours.