• R&D and manufacturing of  deep hole drilling machines for decades — Strong Technology Back-up
  • Unparalleled design and exquisite production — Durable Using
  • Drill deep hole with closest tolerance and concentricity —  Meet Your Extreme Requirements
  • CNC and automation — Easy Operation
  • Comprehensive support service — Guaranteed Quality

Deep Hole Drilling Machine Overview

gsm machine overview

Gun Drilling Machines

Gun drilling machines are mainly for drilling deep hole of small diameters (∅0.7mm ~ ∅40mm). This type of machines use gun drill as cutting tool. And the most common machines for precise deep hole processing.

GSM develops five series of gun drilling machines : ZK21, ZK21C, ZK21E, ZK21F and ZK21G. Meet different deep hole drilling such as concentric, eccentric, graduated ,etc. All are CNC controlled.

Widely used in industries like auto parts, machinery, textile, etc. Satisfy drilling most types of parts like shaft, box, non-standard, etc.


BTA Deep Hole Drilling Machines

BTA machines are mainly for drilling deep hole of big diameters (≥∅16mm) and large length-to-diameter ratio (Max.ratio can be 400:1). 

Besides, BTA’s processing efficiency is about 2-4 times higher than gun drilling. So, it is an ideal deep hole drilling machine for batch production, high drilling efficiency requirement and continuous working situation.

GSM produces ZK21D BTA machine. Realizes drilling and boring. The max. drilling depth reaches 4000mm. 

Design & Configuration

machine overview

Stability & Color

HT300 one-piece casted machine bed, spindle box and chip box, etc.Ensures rigidity by 3D dissecting of structure and artificial aging.No deformation when heavy cutting and high speed running.Introduced full closed protection and partial protection.Upper part color is white (RAL9003), machine bed is gray (RAL7046). You can also customize your color.


CNC System

FANUC, SYNTEC and GSK for your option.

Drilling parameter can be programmed.

Counting function for effective drill tool sharpening to remain precision and prolong tool’s life.

drilling spindle

Spindle System

Step-less rotating and feeding.High speed precise mechanical spindle, spindle motor, frequency motor and motorized spindle driving for option.

High pressure rotary joint inserts cutting fluid into drilling tool from back of spindle. Introduced DEBULIN from USA and ROTOFLUX from Italy for option.


Transmission System

Introduced linear guide and ball screw of high rigidity and precision.

Ensures efficient, precise and stable drilling.

Lubricated by automatic batch lubrication pump.

auxiliary chip flushing

Auxiliary Chip Flushing Device

On side of chip box.

Manual and automatic control.

Efficiently help to remove chips.

drilling tube support

Drilling Tube Support

Driven by chains.

When tool returns keeping the structure on average position.

Help to conveniently replace tools.

adjustable driver

Adjustable Drill Driver Structure

Gun drilling tool’s length changed after grinding. Keep uniformity of tool’s length by setting gauge and adjustable shank.

This ensures uniformity of drilling depth of multiple spindle machines.


Overview of Safety Function

The whole machine is equipped with multiple monitoring, alarming and inter-locking functions.Equipped with cutting fluid pressure adjusting, monitoring and displaying device.

Automatic tool wearing and breaking inspection.Automatic alarm and stop when currency beyond rated value.

coolant pump

High Pressure Coolant Pump

Optional plunger pump, gear pump, vane pump, etc in term of different drilling demands.

Ensures better lubrication, coolant and chip removing.

deoiling device machine learning overview

Separation of Cutting Fluid Transmission and Steel Chip

Optional magnetic chip remover and scrap chip remover.

Programmable start and stop separation and automatic chip removing.

Automatic on-site de-oiling device is an optional equipment. 

coolant machine learning overview

Cutting Fluid Coolant Machine

High power and digital control.

coolant machine learning overview

Fluid Tank

Unfiltered area introduced special designed fluid return path to prolong the circulation.

Better sediment of chip and coolant of oil.

Equipped with fluid level switch. Automatic alarm and stop when lack of fluid.

paper filter machine learning overview

Drum Paper Tape Filter

Final filter device of the system.

Full closed filtering.

Automatic paper feeding.

Filtering accuracy can be 20um.

GSM Machine Order Code

Please refer to bellowing picture to learn GSM machine code. Which tells you the meaning of each element in machine mode.

buy machine order code

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