
AYCNAGOHHSS-CO Oil-Hole Drill GOH已售出0個HSS-CO Oil-Hole Drill GOH (6558P), an end-mill shank through-coolant drill that delivers cutting fluid straight to the tip, greatly improving chip evacuation and cooling in deep holes - ideal for continuous production drilling. Diameter 8~26.5mm, overall length 83~195mm, 4~5xD, available in 38 sizes. G coating boosts wear resistance and tool life. Drills carbon steel, alloy steel and stainless steel up to HRC40. Japanese brand, consistent quality.
商品分類
標籤
Through-Coolant Drill
Product Overview: HSS G Oil-Hole Drill 6558P – GOH Series
【Product Features & Why We Recommend It】
- Japanese Brand Professional Quality: Originating from a professional Japanese cutting tool brand with rigorous quality control — recommended for users with high demands on precision hole diameter accuracy and drilling stability.
- Center-Through Coolant Oil-Hole Design: Features a center-through (internal coolant) structure that delivers cutting fluid directly from the drill center to the cutting edges — recommended for deep hole precision drilling applications, effectively force-evacuating chips from the hole bottom while significantly reducing cutting heat accumulation to notably improve hole wall quality and tool life.
- HSS-CO Cobalt High-Performance Substrate: Manufactured with cobalt high-speed steel (HSS-CO), with maximum machining hardness up to HRC40 — delivering superior red hardness and wear resistance compared to standard HSS, recommended for precision deep hole drilling of carbon steel, alloy steel, and stainless steel.
- G Coating Enhancement: The surface is treated with G coating, providing outstanding wear resistance and heat resistance — combined with center-through coolant, recommended for long-duration continuous precision drilling of high-hardness materials, effectively extending tool change intervals.
- Weldon Shank Precision Clamping: Features a Weldon shank design providing superior clamping stability compared to standard straight shanks — recommended for precision machining applications with strict requirements on hole diameter accuracy and drilling concentricity.
- 38 Specification Precise Coverage: Available in diameter 8–26.5mm, flute length 33–108mm, and overall length 83–195mm across 38 specifications — recommended for flexible selection based on workpiece hole diameter and accuracy requirements.
【Machining Applications & Uses】
- Primary Use: Precision hole diameter drilling, center-through coolant deep hole machining, and precision drilling operations on high-hardness materials.
- Recommended Work Materials:
- P-Class (Carbon Steel / Alloy Steel): Structural steel, carbon steel, and alloy steel — recommended for hardness below HRC40, where the center-through coolant design combined with G coating delivers stable precision deep hole drilling performance.
- M-Class (Stainless Steel): SUS304, SUS316, and other high-toughness stainless steel — the center-through forced cooling effectively suppresses work hardening and cutting heat accumulation, recommended as the preferred configuration for stainless steel precision hole diameter machining.


