Sumitomo General Catalog 2025-2026

MOLD FINISH MASTER

SUMIDIA Coat Ballnose Endmills SDCB Type

SUMIBORON Mold Finish Master BNBR Type

R Ball-nose

r Radius

H

Hard Brittle Material

Radius

● Improved machined surface quality through use of a wiper edge (available on ø1.0mm drills and larger).

● Produces high efficiency roughing/medium finishing of carbide molds ● Newly developed diamond coating exhibits stable tool life ● SUMIDIA Binderless Endmill combination provides the highest-level machining precision ● ø10mm hemispherical machining

Machined Surface Comparison

Ra : 0.08μm Rz : 0.62μm

Ra : 0.14μm Rz : 1.04μm

I

With Wiper Edge

Without Wiper Edge

● Combination of CBN SUMIBORON BNX20 with excellent wear resistance and optimal cutting edge design provides longer tool life. MOLD FINISH MASTER Competitor CBN

Part Material:

Cemented Carbide AF1 (Ultra-Fine Grained Carbide)

Tool: SDCB 2R100-060 Cutting Conditions:  n = 30,000 RPM, v f = 11.8" IPM a e = 0.012", a p = 0.004", Air Blow

Small amount of wear

Breakage

Part Material:

STAVAX(52HRC)

Tool Life

Tool: BNBR 2D200R050-0604 (ø2 × r 0.5) Cutting Conditions:  n = 20,000 RPM, v f = 15.75" IPM a p = 0.0012", p f = 0.0276" Oil Mist

MOLD FINISH MASTER SDCB Type

2,408

Competitor’s Product A

2,355

● Excellent wear resistance delivers almost 10 times longer tool life than carbide endmills.

Competitor’s Product B

1,466

0.0024

Breakage

Competitor’s Product C

1,387

0.0020

Coated Carbide

3,000

0

1,000

2,000

Material Removal Volume (cm 3 )

0.0016

● ø2.0 (R1.0) number of workpieces and tool damage (Delamination)

0.0012

Small amount of wear

0.0008

Rz: 4.792μm

Tool life 10x UP

MOLD FINISH MASTER

0.0004

BNBR Type

Efciency 6x UP

0

0

30

60

90

120

7 Holes Milled

Cutting Length (yds)

Tool Wear Comparison MOLD FINISH MASTER

Rz: 8.976μm

Coated Carbide

7 Holes Milled

Rz: 8.784μm

Small amount of wear

Breakage

7 Holes Milled

Work Material: STAVAX(52HRC) Tool: BNBR 2D200R050-0604 (ø2 × r 0.5) MOLD FINISH MASTER Cutting Conditions:  n = 20,000 RPM, v f = 31.5" IPM a p = 0.0012", p f = 0.0276" Oil Mist Coated Carbide Cutting Conditions:  n = 4,800 RPM, v f = 4.72" IPM a p = 0.0012", p f = 0.0276" Oil Mist

Rz: 13.88μm

7 Holes Milled

I 25

Made with FlippingBook flipbook maker