Probiters Exim LLP
OFFICIAL TECHNICAL PRODUCT CATALOGUE ISO 9001:2015 CERTIFIED | AHMEDABAD, INDIA
PRECISION DRILLING & GUNDRILLING

Gundrilling Machine — Centre Hole

Twin-Spindle Concentric Centre-Hole Gundrilling Machine for Axles

PRODUCT CATALOGUE ISO 9001:2015 CERTIFIED DESIGN BASIS v5.0
Operating Concept & Design Basis

Executive Machine Overview

The Gundrilling Machine — Centre Hole engineered by Probiters Exim LLP represents the pinnacle of special purpose machine manufacturing for industrial production lines. Built on a rigid vibration-damped frame and integrated with industry-standard controls (Siemens S7-1200 (CPU 1214C)), this machine delivers uncompromising accuracy, long-term mechanical reliability, and ultra-low maintenance overhead.

PAYBACK PERIOD 4.6 Months
ANNUAL SAVINGS ₹13.6 Lakhs / yr
PLC AUTOMATION Siemens
LEAD TIME 4–6 Weeks
Machine Architecture

Core Machine Sub-Systems & Mechanical Modules

⚙️ Synchronized Twin Drilling Heads

Opposing gundrill heads advancing simultaneously to drill both ends of axles in a single 22-second takt cycle.

⚙️ Pneumatic Self-Centering Vise

High-repeatability V-groove clamping jaws aligning shaft axes to within 0.025 mm TIR concentricity.

⚙️ Mist Extraction System

Integrated oil-mist filter maintaining clean, smoke-free air inside the machine enclosure.

⚙️ Automated Part Loader Interface

Pneumatic loader arms receiving raw shafts from upstream lathes and transferring finished parts downstream.

Published Technical Data

Comprehensive Parameter Matrix Table

Engineering ParameterVerified Specification / Design Basis
Concentricity Runout0.025 mm TIR opposing center hole alignment
Spindle Head CountDual opposing head simultaneous drilling
Clamping VisePneumatic self-centering dual V-block vise
Production Takt22 seconds per double-ended shaft
Coolant UnitIntegrated oil-mist extractor & high pressure pump
Control PlatformSiemens S7-1200 (CPU 1214C)
HMI InterfaceProface 7" Touch HMI
Pre-Dispatch FAT100% Pre-Dispatch Acceptance Testing & Calibration Sign-Off
Conceptual Layout

General Arrangement (GA) CAD Vector Blueprint

PROBITERS EXIM LLP // GENERAL ARRANGEMENT (GA) SCHEMATIC GUNDRILLING — CENTRE HOLE PROBITERS EXIM LLP — INDIA DWG NO: GA-CAD-2026-CH09 SCALE: 1:15 CAD SHEET: 01 / 01 STATUS: APPROVED FOR CONCEPT ENGR: R&D DEPT DESIGN BASIS & ENVELOPE DIMENSIONS BED LENGTH: 3000 mm EXTRUSION SCREW CAPACITY DRILL RANGE: ⌀ 6 mm – 34 mm COOLANT PRESSURE: 100 BAR HIGH-PRESSURE OIL 3000 mm BAR STOCK BED
DWG REF: PRB-GA-09-2026 | REV 5.0 Download Vector SVG File →
Operating Cycle

Visual 4-Step Process Sequence

01PART LOADINGPosition component onto application-specific fixture
02POKA-YOKE VERIFYSensors validate orientation and clamp closure
03PLC EXECUTIONServo/hydraulic motion profile executes test sequence
04LOG & RELEASETelemetry logs OK/NOK result and releases part
Customization & Options

Tooling Fixtures & Automation Integration Options

Standard Features Included

  • Siemens/Mitsubishi Industrial PLC & Color Touch HMI
  • Category-4 Safety Light Curtains & E-Stop Latches
  • Automatic Centralized Lubrication Unit
  • 100% Calibrated Pre-Dispatch FAT Verification

Optional Tooling & Automation Upgrades

  • Automated Vibratory Bowl Feeder & Escaper Mechanism
  • 3-Axis Cartesian Gantry Robot Loader Integration
  • Laser/Camera Optical Part Inspection Verification
  • OPC-UA MES Network Database Telemetry License
Proven Performance

Customer Success & Verified Financial ROI

❌ COMPETITOR PITFALLS

Single-ended center hole drilling created concentricity misalignment between opposing shaft ends, causing grinding rejections.

PROBITERS ADVANTAGE

Probiters Dual Pneumatic Self-Centering Vise System with synchronized twin opposing gundrilling heads and precision linear guides.

✓ FINANCIAL OUTCOME
CENTER HOLE ALIGNMENT ERROR:
0.4mm Misalignment Down to 0.025mm
"Synchronized twin-head drilling solved our camshaft concentricity issue instantly. Downstream grinding scrap dropped to zero overnight."
Manufacturing Guarantee

The Probiters Quality & Support Promise

100% FAT Pre-Dispatch Testing
SIEMENS / MITSU PLC Platform
ON-TIME Delivery Commitment
3 MONTHS FREE Production Support

Need a formal technical proposal or 3D layout simulation? Our engineering design team in Ahmedabad prepares custom machine proposals within 3–5 working days.

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