EDM Drill Guide

High-Precision EDM Drill Guides (Ceramic & Ruby)

Perfect Concentricity: Exceptional inner bore straightness ensures perfect electrode alignment and ultra-straight micro-hole drilling.
Premium Materials: Available in Wear-Resistant Ceramic and Genuine Ruby to maximize lifespan and withstand high-amperage discharges.
Zero Deflection: Minimizes electrode vibration and electrode wear, significantly reducing cycle times per hole.
Universal Compatibility: 100% drop-in replacements for standard EDM hole poppers and CNC small hole drilling machines.

Selector Options:

Select Material: [Ceramic / Ruby]
Select Inner Diameter (ID): [0.3mm / 0.5mm / 1.0mm / 2.0mm / 3.0mm / Custom]

Why Choose Our EDM Electrode Guides

1: Ultra-High Coaxial Precision

Our electrode guides are manufactured with sub-micron geometric accuracy. This guarantees that your brass or copper tubes remain perfectly centered, preventing hole tapering and ensuring exact positioning even at extreme depths.

2: Superb Wear & Thermal Resistance

Utilizing high-purity technical ceramics and single-crystal ruby inserts, our guides provide superior dielectric resistance and thermal stability. They endure intense flushing pressure and continuous electrical discharge without premature inner diameter expansion.

3: Reduced Electrode Breakage

The flawless chamfer design and ultra-smooth inner entry cone eliminate micro-snags as the electrode advances. This results in stable sparking conditions and dramatically less down-time caused by stuck or bent electrode tubes.

Technical Specifications & Size Charts

Available Sizes & Technical

We stock a comprehensive range of standard sizes and offer fast customization for non-standard diameters. Specifications

Guide Material	Body Material	Available ID Range	Concentricity Tolerance	Length Options
Ceramic (Si3N4 / Al2O3)	Stainless Steel / Brass	0.15 mm – 6.00 mm	$\le$ 0.002 mm	25mm, 30mm, 42mm
Ruby (Single Crystal)	Stainless Steel	0.20 mm – 3.00 mm	$\le$ 0.002 mm	Standard & Extended

Compatibility & Applications

100% Compatible with Global EDM Drilling Brands

Our EDM drilling guides are engineered to replace OEM parts seamlessly across all major small-hole drilling EDM machines, including:
- Taiwanese & Chinese Brands: Chmer, Accutex, Joemars, Castek.
- Japanese & European Brands: Sodick (K1C series), AgieCharmilles.
Applications: Ideal for cooling hole drilling in turbine blades, start holes for wire EDM, medical components, and precision fuel injection nozzle manufacturing.

Quality Inspection

Rigorous Testing for Flawless Micro-Drilling

A tiny defect inside a drill guide can ruin an expensive workpiece. That is why every single guide undergoes:

Air-Flow & Micro-Bore Pin Gauge Testing: To verify the exact inner diameter clearance.
Laser Concentricity Inspection: To ensure the core and the outer housing share the exact same center axis.
Surface Finish Magnification: 100% checked under microscopic vision systems to guarantee a smooth entry edge.

FAQ

FAQ 1: Should I choose Ceramic or Ruby for my EDM drill guide?
- Ans: Ceramic guides are highly cost-effective and perfect for general precision small-hole drilling. Ruby guides offer even higher hardness and lower friction, making them the preferred choice for ultra-high-speed automated CNC drilling operations where tool wear must be kept to an absolute minimum.
FAQ 2: Do you support custom inner diameters for unique electrode tubes?
- Ans: Yes! We can customize the inner diameter (e.g., 0.17mm, 1.25mm) and custom total lengths based on your technical drawings.