Precision On-Site Line Boring Services in the Bay Area & Surrounding Areas
Top Line Welding Services, Inc. offers expert line boring services for worn, oversized, or misaligned bores in heavy equipment and structural components. Our mobile setup allows us to perform precision in-place machining directly on-site, minimizing downtime and eliminating the need to disassemble or transport large machines. Whether you need to rebuild pivot points, buckets, booms, or bearing housings, our team restores your equipment to OEM specifications — fast and reliably.
What We Service – Common Line Boring Applications
Loader arms and bucket pins
We restore worn pin bores on loaders and buckets to factory specs, ensuring tight fits and smooth articulation.
Excavator Booms and Dipper Arms
Precision line boring for booms and arms with misaligned or oval-shaped bores due to wear and tear.
Backhoe Pivot Points
We rebuild pivot connections that have excessive play or elongated holes, improving operational accuracy.
Dozer Blade Arms and Trunnions
Restore blade lift arms and trunnion connections on bulldozers to prevent failure and maintain pushing power.
Construction and Mining Equipment
From buckets to frames, we provide on-site machining for the heavy-duty wear points on industrial machinery.
Agricultural Machinery
We repair bore wear in tractors, loaders, and implements, helping farms avoid downtime during critical seasons.
Bearing Housings and Journal Bores
Line bore and re-align bearing housings to eliminate vibration and improve equipment longevity.
Custom Frames and Weldments
Bore restoration on structural or custom-fabricated frames, ensuring alignment and mechanical performance.
And more...
Capabilities Overview
- Our Line Boring Capabilities:
- On-site, in-place line boring service
- Weld buildup and bore restoration to OEM spec
- Bores from 1.5” to 24” in diameter
- Precision machining with minimal tolerance deviation
- Mobile welding + machining combo
- Available for emergency field repairs or scheduled maintenance
Why Top Line Welding Is the Team You Want for Line Boring
Line boring isn’t something most welding or machining companies offer — and even fewer do it well. It’s a highly specialized process that requires precision equipment, expert welders, and a deep understanding of structural alignment and bore geometry. At Top Line Welding Services, Inc., we don’t treat line boring as a side service — it’s one of our CORE SPECIALTIES. What makes us different is not just that we perform in-place machining and bore restoration — it’s how we approach every job with the mindset of preventing future breakdowns, not just fixing worn parts. We show up ready to handle oversized bores, misaligned pivot points, and field-rebuild situations that others might walk away from. If you’ve found us, you’ve uncovered one of the few teams in the Bay Area who can confidently say: “We do this, and we do it right.”