Sandvik boring tools
Boring methods
Boring is defined as a method to enlarge or improve the quality of an existing hole. Sandvik Coromant offers several flexible tool systems available in a wide diameter range for roughing, fine boring and reaming operations.

Roughing – Tools covering a diameter range from 25 to 550 mm. Hole depths up to 6 x coupling diameter. Roughing is primarily focused on metal removal in order to enlarge existing holes made by methods such as pre-machining, casting, forging, flame cutting etc. 

Fine boring – Tools covering a diameter range from 3 to 981.6 mm. Hole depths up to 6 x coupling diameter. Intended to complete an existing hole to achieve a close hole tolerance, position and high quality surface finish.

Reaming – The multi-edge reamer covering a diameter range from 10 to 31.75 mm.
This is a highly productive tool for high quality surface finish and close dimensional tolerance. 

Milling
A milling cutter with helical or circular interpolation can be used instead of boring tools. The method is less productive when it comes to roughing but can be an alternative when:
• machine power is limited and/or no coolant available
• chip breaking/evacuation is difficult to obtain by a boring tool
• an absolutely flat bottom hole is required
• there is limited space in the tool magazine
• the series length is short. Tools to produce various hole diameter.

 Internal turning
Boring of rotational symmetrical components is normally carried out in a turning lathe. See General turning, 

Choice of method
Three different areas may be considered to determine the best method and tooling solution.
1. Hole dimensions and quality
2. Component material, shape and quantity
3. Machine parameters

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