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Hand Reamer Metric 8mm Alloy Tool Steel 9Crsi H8 6 Straight Flutes Hand Milling Cutter Tool

Free shipping on orders over $29.99

$6.29

$ 2 .99 $2.99

In Stock

1.Size:2.5mm


  • 【SIZE】Cutting Dia.: 8mm, Square shank side:6mm/0.24"; Tool flute length: 58mm/2.28"; Overall length: 110mm/4.33".Package include 1 piece.
  • 【MATERIAL】Made by 9Crsi alloy tool steel, Hard and durable,reaches H8 level of drilling accuracy, reduces surface roughness of workpieces.
  • 【CHAMFERED ANGLE DESIGN】Chamfered Angle in the bottem provide orienting effects, ensure axis position and roundness.
  • 【FEATURE】: Reamer can be hand operated by use of wrenches and used for light cut, repair work, removing stock or simply for enlarging holes.
  • 【APPLICATION】Designed for accurate reaming in aluminum, cast iron, copper, magnesium alloy, plastic etc.



Product Description

a

Notes on Use

  • Appropriately reducing the cutting speed and feed speed can prolong the service life of the reamer;
  • When working, it is necessary to add cutting fluid to protect the cutting edge to make the cutting smoother;
  • When the oxide film or other hardened layer remains on the surface of the workpiece, it can be removed by reverse milling.

1

Feature<1>

  • It adopts a suitable negative rake angle design, which is effective in anti-vibration and has good guiding performance.
  • The use of large core diameter enhances the rigidity of the tool to make cutting and chip removal stable.

2

Feature<2>

  • The shank is finely ground and chamfered, with a high horizontal reference.
  • Efficient clamping and high concentricity provide high accuracy for product processing.

3

Feature<3>

  • Wide chip flute, H7 high precision
  • Smooth inner surface, Smooth chip removal without residue
a+

Explanation of Reaming Allowance

  • In order to improve its dimensional accuracy and hole surface quality, reasonable reaming can effectively improve the hole accuracy and surface quality.
  • Generally, the reaming allowance is 0.1-0.25mm (one side). For larger diameter holes, the reaming allowance should be increased appropriately, but the allowance should not be greater than 0.3mm.
  • There is an experience that suggests to reserve a thickness of 1-3% of the reamer diameter as the reaming allowance (diameter value). For example, it is more appropriate to add a Φ20 reamer with a hole diameter of about Φ19.6: 20-(20×2/ 100)=19.6
  • Reaming allowances are usually made smaller for hard materials and some aerospace materials.

T Hoff
2025-09-05 16:22:12
Made quick work of a couple of dimensionally challenged holes in a piece of aircraft aluminum that were holding up a project of mine. Arrived the next day (on Sunday morning) and fifteen minutes later all four holes were properly sized and I was able to fit the pins that were supposed to go through them.
Allegro Winds
2025-09-04 13:11:48
Good accuracy for the price.
Jeff Mudek
2025-08-22 14:25:00
What I needed
Customer Mr D
2025-03-29 17:20:26
Looks like cutting edge has pits and is rough. Quality does not look good. Don't think wil last I'm returning.
Serhii
2024-12-29 16:07:26
Works fine.
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