Hand Reamer Metric 12mm, Alloy Tool Steel 9Crsi H8
- 【SIZE】Cutting Dia.: 12mm, Square shank side:9mm/0.35"; Tool flute length: 71mm/2.8"; Overall length: 135mm/5.31".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.
Estimated shipping
Select a product to estimate shipping.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.
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.
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.
Feature<3>
Wide chip flute, H7 high precision
Smooth inner surface, Smooth chip removal without residue
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.
Product details
Specifications
| Main Specification | |
|---|---|
| Manufacturer | Focmkeas |
| Brand | Focmkeas |
| Product Dimensions | 6.77 x 4.72 x 0.47 inches |
| Size | 12mm |
| Item Weight | 2.82 ounces |
| Product information | |
|---|---|
| Item model number | 12mm |
| Technical Details | |
|---|---|
| Part Number | 12mm |
| Others | |
|---|---|
| Date First Available | 2022, December 27 |
| Product Type | Hand Reamers |
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