Sumitomo General Catalog 2025-2026

Chipbreaker and Grade Selection Guide For Small Lathes

Grade

AC1030U

Employs a new PVD coating, and a dedicated tough carbide substrate. High-quality cutting edge grade suppresses adhesion and micro-chipping, realizing excellent machined surface quality.

A

Performance

AC1030U

100mm

Machined Surface Roughness

Wear Resistance

.010

0.005 0.008 0.010 0.012 0.014 0.016 0.018

Competitor's Product AC1030U Conventional Tool

Competitor's Product

.008

Conventional Tool

.006

AC1030U

.004

.002

0

0

50

100

150

0

50

100

150

Workpiece Material: SUS304 Insert: DCGT32.50.5RFY Cutting Conditions: v c =330 SFM, f =0.002 IPR, a p =0.004”, Wet (Oil-based)

Cutting Distance (No. of Passes)

Cutting Distance (No. of Passes)

Application Examples

[S45C Shaft Stator]

[STKM12C-EC Pipe]

200

AC1030U (1,700pcs)

Conventional Tool (1,650pcs)

140

100

70

Breakage

AC1030U Conventional Tool 0

Rz>0.45

Rz0.3

Insert: CCGT21.50LFX Cutting Conditions: v c =645 SFM, f =0.0015 IPR, a p =0.015”

Insert: VCGT220.5RFX Cutting Conditions: v c =640 SFM, f =0.0047 IPR, a p =0.007-0.010” Wet

[SUS304 Body Valve]

[SUS430 Sensor Housing]

2,000

1,600

AC1030U (1,500pcs)

Competitor's Product (1,000pcs)

1,000

800

AC1030U Conventional Tool 0

No Chips Clinging to Tool

Chips Clinging to Tool

Insert: VCGT220RFY Cutting Conditions: v c =105 SFM, f =0.001 IPR, a p =0.008”, Wet

Insert: DCGT32.51MEFC Cutting Conditions: v c =165 SFM, f =0.0025 IPR, a p =0.008”

A25

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