Deep Hole Gun Drilling Machine For Φ2-10mm Bores

Deep Hole Gun Drilling Machine – Precision, Speed, Reliability

This deep hole gun drilling machine is designed for drilling coaxial holes in cylindrical workpieces. Using the advanced gun drilling method, it delivers exceptional hole quality for automotive, aerospace, and hydraulic applications.

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Deep Hole Gun Drilling Machine Key Specifications

Parameter	Value
Drilling diameter range	Φ2 – Φ10mm
Maximum drilling depth	1000mm
Maximum workpiece length	1000mm
Workpiece OD range	Φ10 – Φ70mm
Drill box max speed	8000r/min
Drill box motor power	3.7kW
Headstock speed	117r/min
Headstock motor power	1.5kW
Z-axis feed range	5 – 500mm/min
Z-axis rapid traverse	4000mm/min
Coolant max pressure	15MPa
Coolant max flow	100L/min
Tank volume	1000L
Filtration accuracy	20μm
Max L/D ratio	100:1
Machine weight	6 tonnes

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Deep Hole Gun Drilling Machine Key Features

Gun drilling method – internal oil injection, external chip discharge

8000 r/min spindle speed – high-speed precision

15MPa high-pressure coolant – efficient chip removal

20μm drum belt filtration – clean cutting oil

Siemens 808D CNC control – user-friendly and reliable

Hydraulic automatic workpiece clamping – fast setup

Ball linear guideways – smooth, accurate motion

Full machine protection – safe operation

100:1 L/D ratio capability – single-pass deep holes

Tool bar dual-support system – enhanced rigidity

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Deep Hole Gun Drilling Machine Process

Cutting oil flows through:

Rotary joint at drill box spindle rear

Drill box spindle inner hole

Tool holder inner hole

Cutting edge

Chip evacuation:

Oil + chips exit through V-shaped groove outside tool holder

Enter guide frame

Discharge into chip conveyor

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Deep Hole Gun Drilling Machine Components

Component	Description
Drill Box	3.7kW motor, 8000rpm, herringbone belt drive, front-mounted pulley
Headstock	1.5kW motor, 117rpm, synchronous belt drive, hydraulic clamping
Guide Frame	Cone disc, guide sleeve, chip discharge cavity
Tool Feeding System	Servo + ballscrew, double-nut, one-end-fixed tensioned support
Tool Bar Support	Dual support sleeves, automatic spacing adjustment
Cooling System	15MPa, 100L/min, 1000L tank, drum filter, 5kW oil cooler
Control System	Siemens 808D CNC
Hydraulic Center Stand	Manually adjustable on linear guideways

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Cooling System Features

Chain plate chip conveyor – automatic chip removal

Paper belt filter – 20μm precision

Oil cooler – 5kW cooling capacity

Variable-frequency pump drive – adjustable flow

Multiple sensors – level, temperature, flow, pressure

Digital display on instrument panel

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Why Choose This Deep Hole Gun Drilling Machine?

Benefit	Reason
Precision small holes	Φ2–10mm capability
Deep holes in one pass	100:1 L/D ratio
High speed	8000r/min spindle
Clean operation	Internal oil injection, external chip discharge
Efficient cooling	15MPa high-pressure coolant
Reliable control	Siemens 808D CNC
Rigid support	Dual tool bar support system
Easy setup	Hydraulic automatic clamping

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Typical Applications

Fuel injector components

Camshaft oil holes

Hydraulic valve spools

Surgical instruments

Precision shaft bores

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