We can drill a hole with minimum diameter of 0.03 mm.
Please refer to the below for our processing experiences.

T0.05

Outer diameter φ0.05 Pitch 0.06 Wall thickness

Small Diameter Hole Machining Results

　＜hole diameter＞　　＜depth＞　　　＜material＞
●　φ0.05mm × 1.0 mm [SUS316L]
●　φ0.10mm × 2.00mm【tb340・SUS316】
●　φ0.15mm　×　2.00mm 【SUS316】
●　φ0.20mm　×　6.00mm 【SUS316L】
●　φ0.25mm × 8.00 mm 【64 titanium】
●　φ0.5 mm　×　13.50mm【SUS304】
●　φ1.0 mm　×　50.00mm【SUS316】
●　φ3.0 mm × 62.00 mm [SUS304 Hastelloy C]

small-diameter deep hole drilling

We provide minimum deviation from straightness for small-diameter deep hole drilling, for example; deviation from linearity ≦ 0.05mm, inner surface roughness ≦ Ra 0.4 for hole dia. 0.1 mm, hole depth 2.5 mm.

Surface roughness examples in 80ｍｍ-deep-hole drilling
(hole dia. 3.0 mm, hole depth 80 mm)

surface roughness example
drilling:　　　Ra 0.67 – 1.83
gun-drilling:　Ra 0.43
reaming:　　Ra 0.13

160ｍｍ-deep-hole drilling with bore polishing

Hole dia.1.7 mm, depth 160 mm, surface roughness Ra 0.015