CSJ Crown Drill Bit, 7D Drill Diameter Range 31.00-31.99, Front-Locking Body with Internal Cooling for High-Speed Deep-Hole Drilling, Indexable Insert Drill / Side-Locking Drill Tip

CSJ Crown Drill Bit, 7D Drill Diameter Range 31.00-31.99, Front-Locking Body with Internal Cooling for High-Speed Deep-Hole Drilling, Indexable Insert Drill / Side-Locking Drill Tip

$841.0000

High-performance 7D indexable crown drill bit engineered for deep-hole machining. Featuring a front-locking body, side-locking tip mechanism, and integrated internal cooling, this tool ensures superior stability, high-speed chip evacuation, and exceptional hole accuracy in heavy-duty drilling applications.

Product Introduction

The CSJ Crown Drill Bit (7D Series) is a high-precision, indexable deep-hole drilling solution designed for fast metal removal and high productivity. Operating at a 7xD drilling depth for diameter ranges between 31.00mm and 31.99mm, it incorporates an advanced front-locking design coupled with a side-locking drill tip mechanism to prevent insert slippage under severe torsional loads. Built-in internal coolant channels deliver fluid directly to the cutting edge, rapidly lowering temperatures and flushing chips out of deep holes to maintain superior accuracy and tool longevity.

Product Parameters

Parameter	Specification
Model Series	CSJ Crown Drill Bit
Drilling Depth Ratio	7D (7 × Diameter)
Diameter Range	31.00 mm – 31.99 mm
Body Mechanism	Front-Locking Body
Tip Mechanism	Side-Locking Insert / Drill Tip
Cooling Type	Through-Tool Internal Coolant System
Tool Type	Indexable Crown Insert Drill

Product Function

Deep-Hole Penetration: Achieves accurate, continuous drilling up to 7 times the diameter without pecking.
Direct Cutting-Zone Cooling: Internal coolant passages reduce thermal load and accelerate chip evacuation from high-aspect ratio holes.
Rigid Tip Retention: The front-locking and side-locking mechanism maintains high accuracy, eliminates deflection, and lowers vibration at high speeds.
Cost-Efficient Maintenance: Indexable and replaceable crown tips allow quick edge changes directly on the machine without replacing the full tool body.

Applications & Scenarios

Heavy Machinery & Aerospace: Deep-hole drilling in structural frames, landing gear components, and heavy brackets.
Energy & Power Generation: Machining turbine components, heat exchanger tube sheets, and oil/gas manifold blocks.
Automotive & Die/Mold: Deep coolant hole creation, engine block manufacturing, and mold base machining.
Machining Materials: Ideal for steel, alloy steel, cast iron, stainless steel, and high-temperature alloys.