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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.
35° helix angle
The smaller the helix angle, the smaller the axial pulling force and resistance. Provide smoother chip removal and easy to process high-quality workpieces.
High speed steel
Made of High-speed steel, HSS has high hardness, high wear resistance and high heat resistance to ensure processing efficiency.
Fully ground knife edge
The cutting edge is fully ground, wear-resistant and durable, and it is not easy to stick chips which make the cutter head sharper and more durable.
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.
Jim
2025-08-09 14:13:06
Carefully use this size to ream the Umarex disc bb mag. Use a pellet seating tool. Watch your pellet length. BIG FUN!
Mike
2025-05-11 13:12:39
Works well
Keith D.
2025-05-08 10:01:21
Perfect, next day delivery.
nelson regalado
2025-04-29 12:58:40
Did not rim iron
Karen M
2025-01-25 17:13:38
Ordered this to widen pegholes on a guitar neck to fit an 8.5mm tuner shaft. I start with a tapered reamer from both sides to open to 8.5, then this one to clean out the middle of the “hourglass†shape left behind. Way faster than hand sanding out that inner part and worth the few dollars if you like modding guitars.
Casey the Online Shopper
2025-01-03 10:37:09
Ordered this to make a cam fit my Kart engine case. It worked
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