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Precision reamers ground for H7/H8 bores with tuned geometry for your material.

Precision Reamers

Chucking, machine and hand reamers for tight-tolerance bores

HSS M2, M35 and M42 reamers with straight or helical flutes for H7/H8 finishes. Available as standard, extra length, expansion and pilot reamers with ground shanks.

HSS M2 / M35 / M42 H7 / H8 bores Straight or helical flutes Chucking · Machine · Hand · Expansion
Request reamer quote Search intent we target: [material grade] + [length] + [size] + [tool type]
Material grades
HSS M2 / M35 / M42

Selected by workpiece material and speed to balance tool life and finish.

Diameter range
Ø6–50 mm (larger on request)

Standard, long series and extra-long lengths; pilots and guides available.

Forms
Chucking, machine, hand, expansion, pilot

Straight or helical flutes; left or right hand helix based on chip flow.

Dispatch
Standard diameters: 1–3 days

Non-standard reamers are quoted with confirmation of tolerance and coating.

How buyers search for reamers

We write for the high-intent query of [material grade] + [length] + [size] + [tool type]. Examples that consistently convert:

  • M35 extra long 12 mm chucking reamer supplier India
  • M42 machine reamer Ø18 helical flute manufacturer
  • M2 hand reamer set 10–20 mm exporter
  • M42 expansion reamer 1/2" for stainless steel
Ready-to-copy brief: grade (M2/M35/M42) + length (standard/long/extra-long) + size + tolerance (H7/H8) + flute style (straight/helical) + quantity.

Finish and material matching

  • Helical flutes for through/vertical holes where chip evacuation matters.
  • Straight flutes for general-purpose and fixture locations.
  • Cobalt-loaded M35/M42 for stainless and alloy steels; M2 for general steel/CI.
  • Optional TiN/TiAlN for extended life on abrasive jobs.
Surface finish targets: H7/H8 bores with controlled run-out and roundness checks.

What we need to quote fast

  • Diameter and tolerance (e.g., Ø12 H7), length (standard/long/extra-long).
  • Flute type (straight/helical) and hand (LH/RH) if specified.
  • Workpiece material and grade preference (M2, M35, M42).
  • Quantity, coating preference and shank style.
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Inspection & standards

  • Size and roundness checks for every batch; plug gauges for validation.
  • Helix angle, relief and run-out verified on CNC grinders.
  • Material certificates for bulk orders; hardness per grade documented.
  • Expansion reamers supplied with setting instructions if required.

Stocked combinations

  • Chucking reamers Ø6–20 mm in M2 for quick dispatch.
  • Helical machine reamers in M35 for stainless and alloy steels.
  • Expansion reamers in popular inch and metric sizes.
  • Pilot and guide reamers for valve bodies and fixtures.

Send a quick brief

Attach prints or list the diameter, tolerance, length, flute style and quantity.

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Address & working hours

  • Big Brother Tools and Traders, Ludhiana, Punjab, India.
  • 14901, St. No. 10, Prabhat Nagar, Dholewal, Ludhiana 141003.
  • Phone / WhatsApp: +91 98882-93755
  • Working hours: Monday – Saturday, 9:00 AM – 6:00 PM IST.