CSJ Crown Drill Bit, 7D Drill Diameter Range 34.00-34.99, Front-Locking Body with Internal Cooling for High-Speed Deep-Hole Drilling, Indexable Insert Drill / Side-Locking Drill Tip

$1,004.0000

High-performance 7D indexable crown drill bit engineered for high-speed, deep-hole drilling. Features a front-locking body with side-locking tip mechanism and internal cooling channels for efficient chip evacuation and prolonged tool life.

Product Introduction

The CSJ Crown Drill Bit (7D Series) is designed for deep-hole drilling applications requiring high efficiency, accuracy, and operational stability. Designed to cover a drill diameter range of 34.00 mm to 34.99 mm, this tool incorporates a front-locking body structure with a secure side-locking tip interface to simplify insert changes while maintaining rigorous clamping rigidity. Its internal cooling channels deliver high-pressure coolant directly to the cutting edge, minimizing heat accumulation and facilitating smooth chip evacuation during deep penetration.

Product Specifications

Parameter	Specification
Product Line	CSJ Crown Drill Bit Series
Drilling Depth Ratio	7D (7× Diameter Depth)
Diameter Range	34.00 mm – 34.99 mm
Locking Mechanism	Front-Locking Body / Side-Locking Drill Tip
Cooling System	Internal Through-Coolant (Thru-Hole)
Tool Type	Indexable Insert / Replaceable Crown Tip Drill

Product Functions

Deep-Hole Penetration: Achieves stable hole-making up to 7 times the drill diameter without bird-nesting or chip jamming.
Efficient Heat & Chip Evacuation: Direct internal coolant delivery cools the cutting zone instantly and flushes chips out of the flute smoothly.
Quick Insert/Tip Replacement: Front-locking design allows rapid indexable tip changes directly on the machine, reducing setup time and tooling costs.
Enhanced Radial Stability: Rigid side-locking interface resists deflection under heavy axial loads during high-speed feed rates.

Application Scenarios

Heavy Equipment & Machinery: Drilling deep fluid and structural holes in heavy castings, hydraulic blocks, and steel plates.
Automotive & Transportation: Machining crankshaft oil holes, powertrain components, and axle housings.
Energy & Petrochemical Equipment: Deep-hole processing in heat exchanger tube sheets, flanges, and high-pressure valve bodies.
General Precision Engineering: High-efficiency drilling on CNC machining centers, horizontal boring machines, and dedicated deep-hole drilling units.