CNC Deep Hole Drilling Machine For Small Diameter Gun Drilling (Φ4-Φ20mm)

ZSK2202DZ CNC Deep Hole Drilling Machine for Small Diameter Gun Drilling (Φ4-Φ20mm, Depth up to 3000mm)

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The ZSK2202DZ CNC Deep Hole Drilling Machine is specially designed for high precision small diameter deep hole machining. It is suitable for gun drilling applications with drilling diameter from 4mm to 20mm and maximum drilling depth up to 3000mm.

The machine adopts advanced CNC control technology and high rigidity structure, providing excellent accuracy, stability and efficiency for deep hole drilling operations in industries such as hydraulic components, automotive parts, molds, medical equipment and precision machinery.

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Main Features

1. High Precision Gun Drilling System

The machine uses gun drilling technology. High-pressure cutting oil is supplied through the inner hole of the gun drill and carries chips away through the V-shaped chip groove, ensuring efficient chip removal and stable deep hole machining.

The machine supports step drilling technology, using different length tools according to drilling depth requirements, which improves tool rigidity and machining stability for long deep holes.

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2. CNC Multi-Axis Control System

Equipped with SIEMENS 828D CNC system, the machine provides precise control of:

X Axis: Worktable transverse movement

Z Axis: Tool feeding movement

C Axis: Workpiece indexing

The C-axis adopts servo motor drive with encoder closed-loop feedback to ensure accurate indexing positioning.

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3. Rigid Machine Structure

The machine bed is manufactured by resin sand casting and treated with normalizing process to achieve high rigidity and long-term stability.

Internal V-shaped ribs improve structural strength and reduce deformation during heavy cutting operations, helping maintain machining accuracy.

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4. Automatic Tool Feeding System

The Z-axis feeding system is driven by servo motor and precision ball screw.

Advantages:

High transmission efficiency

Low friction loss

High positioning accuracy

Stable high-speed and micro feeding capability

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5. Advanced Cooling and Filtration System

The deep hole drilling machine is equipped with a complete coolant system including:

Dirty oil tank

Clean oil tank

Chip conveyor

Drum filter

Oil chiller

Pump system

The system provides sufficient high-pressure cutting oil supply for deep hole drilling and ensures stable machining performance.

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Technical Specifications

Item	Specification
Machine Model	ZSK2202DZ CNC Deep Hole Drilling Machine
Drilling Diameter	Φ4–Φ20 mm
Maximum Drilling Depth	3000 mm
Workpiece Diameter Range	Φ50–Φ250 mm
Maximum Workpiece Length	3000 mm
CNC System	SIEMENS 828D
Spindle Speed	Max. 5000 rpm
Tool Feed Speed	5–500 mm/min
X Axis Travel	500 mm
Worktable Size	1000×5000 mm
Hole Accuracy	IT7–IT9
Surface Roughness	Ra1.6–6.3 μm
Maximum Depth-to-Diameter Ratio	200:1

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Applications

The ZSK2202DZ CNC Deep Hole Drilling Machine is widely used for:

Hydraulic cylinder components

Precision tubes

Automotive parts

Mold components

Medical components

Aerospace parts

Engineering machinery parts

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Contact: Lilian Lee
Whatsapp: +8619819312517
Email: drilling@dzguanlu.com

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