Trepanning Deep Hole Drilling Machine

Trepanning Deep Hole Drilling Machine – Power, Precision, Capacity

This trepanning deep hole drilling machine is designed for large-diameter core drilling operations on cylindrical workpieces. With a trepanning range of Φ100 to Φ350mm and 6000mm depth, it delivers exceptional performance for energy, shipbuilding, and heavy machinery industries.

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Trepanning Deep Hole Drilling Machine Key Specifications

Parameter	Value
Trepanning range	Φ100 – Φ350mm
Processing depth	6000mm
Workpiece OD range	Φ150 – Φ500mm
Workpiece length range	500 – 6000mm
Drill box speed range	30 – 1000r/min
Headstock speed range	30 – 1000r/min
Drill box motor power	37kW
Headstock motor power	37kW
Maximum feed force	60kN
Maximum tightening force	60kN
Coolant max pressure	2.5MPa
Coolant max flow	400L/min
Tank volume	5500L
Machine floor size	18m × 3.3m
Total power	112kW

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Trepanning Deep Hole Drilling Machine Key Features

Trepanning method – internal oil feed, external chip discharge

Dual 37kW servo spindle motors – high torque for tough materials

PLC control system – reliable and user-friendly

HT300 cast iron bed – high rigidity and vibration damping

Germany HECKERT precision grinding – high bed accuracy

Double aging treatment on castings – long-term stability

Double rectangular hardened guideways – high wear resistance

2.5MPa high-pressure coolant – efficient chip removal

400L/min flow, 5500L tank – extended operation

Three-point center rest – stable workpiece support

Manual 3-speed gearboxes with stepless regulation – flexible speed selection

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Trepanning Deep Hole Drilling Machine Main Components

Component	Description
Machine Bed	HT300 cast iron, double rectangular guideways, HECKERT ground
Headstock	37kW motor, 30-1000rpm, manual 3-speed, Φ500mm chuck
Oil Pressure Head	Servo-driven, tool guidance, oil supply, workpiece support
Drill Box	37kW motor, 30-1000rpm, manual 3-speed, chip conveyor
Center Rest	Three-point closed type, screw adjustment
Tool Bar Support	Integral cast, nylon sleeve, YYC rack drive
Cooling System	2.5MPa, 400L/min, 5500L tank, digital monitoring

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Trepanning Deep Hole Drilling Machine Machining Accuracy

Parameter	Value
Hole diameter accuracy	IT9 – IT11
Surface roughness	Ra6.3 – Ra12.5μm
Skewness	0.5mm / 1000mm

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Why Choose This Trepanning Deep Hole Drilling Machine ?

Benefit	Reason
Large-diameter capability	Φ100–350mm trepanning range
Deep hole capacity	6000mm processing depth
Powerful cutting	37kW dual spindles
Efficient chip removal	2.5MPa, 400L/min coolant
High rigidity	HT300 cast iron bed, double guideways
Long-term accuracy	Double aging treatment
Reliable control	PLC system

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Typical Applications

Turbine shafts and generator rotors

Propeller shafts and rudder components

Large cylinders and structural parts

Oil and gas equipment components

Large-diameter core drilling

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