Milling Head Rebuilds Across The Globe

Welcome to MHR, your trusted partner in milling head rebuilding and precision machine restoration. We take pride in delivering expert craftsmanship, reliable service, and lasting performance for every project we handle. Whether you need a complete rebuild, repair, or performance upgrade, our experienced team is dedicated to keeping your equipment running at its best. At MHR, quality, precision, and customer satisfaction are at the heart of everything we do.

Bridgeport Milling Machine Rebuild Overview

At MHR, every milling head rebuild begins with a thorough inspection and evaluation to identify wear, damage, and performance issues. Once we determine what’s causing the problem, we inform our customers with a detailed report outlining what needs to be repaired or replaced before any work begins. After approval, we disassemble, clean, and measure each component to ensure precise tolerances. Worn or damaged parts are repaired or replaced using high-quality materials, and critical surfaces are precision-ground and aligned to OEM specifications. Following reassembly, each milling head undergoes rigorous testing and quality checks to verify accuracy, balance, and smooth operation. Our detailed process ensures that every rebuilt unit performs like new — reliable, efficient, and ready for production.

Need a quote? Please give us a call (815) 218-1353 or fill out our online form, and one of our technicians will get back to you with a detailed estimate. We’re here to help you keep your machines running at their best.

OUR FULL REBUILD PROCESS AT MHR

1. Initial Inspection & Assessment

  • Conduct a visual and functional inspection to identify wear, misalignment, or damage.

  • Measure critical tolerances, check for spindle runout, and inspect bearings and gears.

  • Document all findings and provide the customer with a detailed report of what needs repair or replacement.

2. Disassembly

  • Carefully disassemble the milling head into its major components, including the spindle, quill, bearings, gears, and housing.

  • Remove all old lubricants, debris, and corrosion.

3. Cleaning & Preparation

  • Thoroughly clean all components using industrial-grade cleaning solutions.

  • Inspect each part again for cracks, wear, or fatigue that may have been missed during the initial assessment.

4. Component Repair & Replacement

  • Repair worn parts when possible, such as regrinding spindles or refurbishing housings.

  • Replace components that cannot meet tolerance standards, including bearings, seals, gears, and bushings.

  • Use high-quality OEM or equivalent parts to ensure long-lasting performance.

5. Precision Grinding & Alignment

  • Precision grind critical surfaces like spindle journals and quill bores to restore OEM tolerances.

  • Align gears, quill, and spindle to minimize vibration and ensure smooth operation.

6. Reassembly

  • Carefully reassemble the milling head, lubricating moving parts with high-grade oils and greases.

  • Reinstall bearings, gears, and seals with precise torque settings.

7. Testing & Quality Control

  • Conduct runout, vibration, and load testing to ensure smooth, precise operation.

  • Verify that the rebuilt head meets OEM specifications for accuracy, speed, and reliability.

8. Final Inspection & Customer Approval

  • Perform a final visual and functional inspection to ensure everything is correct.

  • Provide the customer with a report of all work performed, detailing replaced parts, adjustments, and test results.

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