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3/8 Inch 8 Pieces HSS Tool Bit Set for Turning and Facing work, Hardened, Pre-ground and Sharpened, for DIY, Hobbyst and Home Workshop Machinist

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$59.99

$ 29 .99 $29.99

In Stock
  • [HSS]: Regular High speed steel, Heat treated and Hardened (HRC58 - 61) to provide good shock resistance and wear resistance. Suitable for regular working on Brass, Aluminum, Plastic, Rubber, Wood, and nonferrous metal, or OCCASIONAL working on mild steel. Not for stainless steel or Hardened steel.
  • [Industrial]: Pre-ground and Sharpened. Dimensions and tolerance are made to the industrial standards. Cut fast and leave a very smooth finish.
  • [8 pieces]: The tool bit set includes 1x External Grooving,1x Internal Thread, 1x External Thread, 1x Boring Bar, 1x 60 degree Right hand lathe, 1x 60 degree Left hand lathe, 1x 80 degree Right hand lathe, and 1x 80 degree Left hand lathe. The specification is laser marked on each tool bit, easy to identify even for new learners.
  • [Shank]: 3/8" Shank. All four faces are CNC grinded to accurate size for tight fitting.
  • [Operation tips]: Before mounting the tool, make sure the chuck is clean and without any chips so the tool bit can be held tight during operation. Use cooling oil for longer tool life. The tip is relatively sharp. If it's too sharp for your application, you can always modify it. For more information, please check the Quick Use Guide included in the box.


Product Description

Jerax tools new logo image

About us

Jerax tools is a manufacturer-direct brand. For years, we have been manufacturing for world-class brands and stand behind the scene. Now, we are finally able to connect with the end consumers directly. At Jerax tools, we want to create the best value for the clients by providing premium yet cost-effective tools and best user experience.

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Turning and facing tool A+

Operation requirements

Rotation Speed (n): n = Vc ÷ (π x D)

* n: Number of Revolutions

* Vc: Cutting Speed (Range for HSS tool is 60 - 90 m/min, or 200 - 300 ft/min)

* D: Cutting Diameter

Example: if we want to keep the cutting speed at 250 ft/min and the cutting diameter for the object is 0.3ft, the calculation for the Rotation speed would be 250 ÷ (3.14 x 0.3) = 265. So "n" would need to be around 265 revolutions per min.

Feeding Speed (f)

Recommended range: 0.003 - 0.012 in per revolution.

Operation Tips

  • Make sure the chunk is clean and without any chips before mounting the tool so it can be held tight.
  • Use cooling oil for longer tool life.
  • The tip is relatively sharp. You can modify it if it's too sharp for your application.
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Alan W. Bycroft
Reviewed in the United States on August 27, 2024
I am brand new to machining, but have been a woodworker for 40 years, so although I don’t have much experience with tools required for turning metal on a lathe, I do have the knowledge and experience to know good from bad tools. These are very good tools. They come in a really nice metal case with each tool bedded in cut out foam….just as you see in the ad. They have a black anodized coating and gold lettering identifying what each tool is. I have only used them on aluminum so far. They are very well machined.
adam bonini
Reviewed in the United States on August 29, 2023
Bit overheated and lost shaprnest in 8 seconds of cutting.
Leon Rookey
Reviewed in the United States on July 12, 2023
Preground so I can perfect speeds and feeds, before I get into tool grinding. These are making me money already!
Ron
Reviewed in the United States on May 25, 2023
I was taught to sharpen tools 60 uears ago and earned my loving for 5 years with metal working then retired and needed to relearn. This set is an excellent reminder.