Sumitomo General Catalog 2025-2026

MOLD FINISH MASTER

SUMIDIA Binderless Radius Endmills NPDRS Type

R Ball-nose SUMIDIA Binderless Ballnose Endmills

r Radius

NPDBS Type /NPDB Type

Hard Brittle Material

Hard Brittle Material

Radius

SUMIDIA Binderless is polycrystalline diamond that directly binds nano-order diamond particles with high strength without using any binders. Harder than single- crystal diamond, it has no cleavability, enabling machining of hard brittle material such as cemented carbide and making new machining methods possible. ■ General Features · SUMIDIA Binderless is a pure diamond material, but unlike single-crystal diamonds, it has no anisotropy. It therefore displays excellent wear resistance with less uneven wear. · Thanks to its polycrystalline structure, SUMIDIA Binderless does not have the cleavability peculiar to single-crystal diamonds and displays excellent fracture resistance. ■ Features

■ Hardness

SUMIDIA Binderless

Ultra-hard with no anisotropy

Single-crystal Diamond

I

Hardness depends on crystal orientation

Conventional PCD

Load 4.9N

0

50

100

150

Knoop Hardness HK (GPa)

● Hemispherical Surface Milling

(1) NPDB Type

(2) NPDBS Type

● Pocketing

Ra 0.017μm

Ra 0.060μm

(3) SDCB Type (SUMIDIA Coat)

(4) Electroplated Grinding Wheel

Ra 0.078μm

Ra 0.110μm

Part Material: Cemented Carbide AF1 (Ultra-Fine Grained Carbide) Machining Details: 0.40" × 0.40" × depth 0.08" Tool: NPDRS 1100R005-030 Cutting Conditions:  n = 40,000 RPM, v f = 7.87" IPM p f = 0.0002", Oil Mist Surface Roughness: Ra 0.015μm Cutting Time: 2 Hours

Part Material: C emented Carbide AF1 (Ultra-Fine Grained Carbide) Machining Details: ø6 (Hemispherical Surface Milling) Tool: (1) NPDB 1050-020 (2) NPDBS 1050-020 (3) SDCB 2R050-020 (4) R0.5, #400 Cutting Conditions:  n = 40,000 RPM, v f = 4.72" IPM p f = 0.0002", Oil Mist Cutting Time: 1 Hour 30 Minutes

● Application to Medical Use (μ-TAS Mold)

● Application to Optical Use (Fly-Eye Lens Mold)

1mm

1mm

Part Material:

C emented Carbide AF1 (Ultra-Fine Grained Carbide)

Part Material:

C emented Carbide AF1 (Ultra-Fine Grained Carbide)

Tool:

NPDB 1030-010 ( R 0.3)

Tool:

 Finishing NPDB 1050-020 ( R 0.5) Roughing Diamond Coated Endmill ( R 0.5)

Cutting Conditions:

 n = 38,000 RPM, v f = 3.74" IPM p f = 0.00004", Wet (Oil-based)

Cutting Conditions:  n = 60,000 RPM, v f = 11.8" IPM p f = 0.0002", Oil Mist Surface Roughness: Ra 0.015μm Cutting Time:  Finishing 2 Hour 40 Minutes Roughing 55 Minutes

Machining Allowance: 0.00012" Surface Roughness: Ra 0.016 to 0.020μm Cutting Distance: 9 yds Cutting Time:

I 24

Finishing 1 Hour 28 Minutes

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