Sumitomo General Catalog 2025-2026

For Steering Part Cutting PCD Rotating Tools

Automotive Components

Proposals for High-speed Feeds and Chatter Reduction with Irregular-pitched Reamers

 Features D Extremely effective for improving chatter prevention, cylindricity, and circularity. D Cycle time can be shortened by a third compared to the use of 4 utes. D Design with attention to rotating balance.

AL

 5 ute Irregular Pitched Reamer

 Application Examples

4 ute Regular Pitch 4 ute Irregular Pitch

5 ute Irregular Pitch

Shape

Allowance

(mm/dia.)

0.5 to 0.7

0.5 to 0.7

Spindle Speed

(min -1 )

1,000

1,000

400

400

125

Feed Rate

(mm/min)

0.4

0.4

Feed Rate

(mm/rev)

0.125

Emulsion-type water-soluble oil

Emulsion-type water-soluble oil

Coolant

Yes

No

Chatter

24

18

8

4

Circularity

(μm)

AL8

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