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Twin-Spindle Gun Drilling Machine

Twin-spindle deep hole gun drilling machine is designed for efficient machining of coaxial holes in shaft-type components. With its dual-spindle configuration, it drills two workpieces at once, delivering exceptional productivity and consistent quality.

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Description

The twin-spindle deep hole gun drilling machine is designed for efficient machining of coaxial holes in shaft-type components. With its dual-spindle configuration, it drills two workpieces at once, delivering exceptional productivity and consistent quality.

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Twin-spindle deep hole gun drilling machine Specifications

Parameter	Value
Drilling diameter range	Φ10 – Φ40 mm
Max drilling depth	1000 mm
Max workpiece length	1000 mm
Max hole L/D ratio	100:1
Workpiece OD range	Φ15 – Φ100 mm
Spindle quantity	2
Main spindle spacing	140 mm
Drill box max speed	5000 r/min
Drill box motor power	3.7 kW
Headstock speed	120 r/min
Headstock power	1.5 kW
Feed speed range	5 – 500 mm/min
Rapid traverse	4 m/min
Coolant max pressure	10 MPa
Coolant max flow	100 L/min
Filtration accuracy	20 μm
Machine total power	20.5 kW
Floor space	4.8 m × 3.1 m
Machine weight	6 tons

Twin-spindle deep hole gun drilling machine Processing Accuracy

Parameter	Value
Hole size accuracy	IT7 – IT10
Surface roughness	Ra0.8 – 3.2 μm
Hole deviation (workpiece fixed)	1 mm / 1000 mm
Hole deviation (workpiece rotating)	0.5 mm / 1000 mm

Twin-spindle deep hole gun drilling machine Features

Twin-spindle – drills two workpieces simultaneously

Gun drilling method – counter-rotating workpiece and tool

Automatic hydraulic cone disk clamping – self-centering, fast setup

5000 r/min spindle speed – high-speed precision drilling

Stepless feed speed regulation – 5–500 mm/min

10 MPa high-pressure coolant – efficient chip removal

20 μm filtration – clean cutting oil

Linear guideways – smooth, accurate motion

GSK CNC control – reliable and user-friendly

Two-stage aged castings – long-term stability

Linked drill bar support rests – consistent support

Slant oil return slot – rapid coolant return

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Twin-spindle deep hole gun drilling machine Components

Component	Description
Drill Box	3.7kW servo motor, 5000rpm, one motor drives two spindles
Headstock	1.5kW motor, 120rpm, hydraulic axial movement for clamping
Feed System	Servo motor + ballscrew, 5–500mm/min, 4m/min rapid
Coolant System	10MPa, 100L/min, 20μm filtration, chip conveyor
Guide Frame	Tool guidance, chip discharge, drill bar support
Drill Bar Support	2 sets, linked movement with drill box

Workpiece Clamping

Cone disk mounted on headstock spindle and guide frame

Hydraulic system controls axial movement

Cone disk engages chamfers on both workpiece ends

Automatic clamping and positioning

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Why Choose Twin-spindle deep hole gun drilling machine ?

Benefit	Reason
Double productivity	Twin-spindle drills two parts simultaneously
Deep hole capability	100:1 L/D ratio in single pass
Precision holes	IT7-IT10 accuracy
Good surface finish	Ra0.8–3.2μm
Efficient chip removal	10MPa high-pressure coolant
Clean operation	20μm filtration, slant oil return
Easy setup	Automatic cone disk clamping
Reliable control	GSK CNC system
Long-term accuracy	Two-stage aged castings
Versatile	Handles Φ15–Φ100mm workpieces