On Site Repair Services, Inc.

Trusted by Central Illinois industries for over 50 years—delivering expert millwright services with integrity and precision

OSHA, MSHA, and Confined Space Certified

815-223-4058

Not every job is an emergency, but every job receives prompt and efficient handling. 53 years of quality workmanship.

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Printable Services Sheet Contract Maintenance Plant Startup Services

Precision Alignment

Precision Alignment – Ensuring optimal machinery performance through advanced laser and dial indicator techniques

On-Site Steel Fabrication

Custom steel solutions crafted directly at your facility including but not limited to structural, stairways & catwalks, tank repair & patching.

Industrial Process Piping – Hot Tapping (Up to 2”)

We offer hot tapping services up to 2 inches, allowing for safe, precise connections to live process piping without shutting down operations. This minimizes downtime and maintains production continuity — ideal for system expansions, modifications, or maintenance

Machinery Moving & Equipment Installation

We provide safe, efficient machinery moving, equipment installation, and plant reorganization — Don’t have space to store your spares? We have over 30,000 sq. ft. of secure commercial storage space.

Mechanical Repairs

Comprehensive repair services to minimize downtime and extend equipment life focusing on bearing & coupling, trunnion, bull gear & tire install, chain sprocket & drive repair, belt winding, splicing, & install.

AWS Certified Welding Team

Certified in all materials, positions, and techniques — backed by an accredited in-house AWS Certified Welding Instructor to ensure continuous improvement and top-tier skill development.

Need support with a capital project or preventative maintenance? Give On Site Repair Services a call — we’re here to help, with quotes tailored to your needs and 24/7 emergency repair services when it matters most.

The People

At On Site Repair, our people are our greatest strength.

We believe in building long-term careers through meaningful training, hands-on experience, and opportunities for advancement — from apprenticeship to leadership. When our team grows, so does our success.

Safety

Safety is non-negotiable at On Site Repair.

Our field technicians receive ongoing safety training and are fully certified in both OSHA and MSHA standards. We also ensure our management team stays current on best practices — reinforcing a culture of safety at every level.

Equipment

Equipped for Anything, Anytime with 24/7 Services

Our work trucks are fully outfitted to handle a wide range of maintenance needs — from precision alignments to equipment installations. Backed by 24/7 call-out service, expert training, and top-tier equipment, we’re always ready to get the job done right.

The Customers

Your Trusted Partner in Maintenance for Over 50 Years

With over 50 years of experience, our success is built on the trust and loyalty of our customers. Our reputation for delivering efficient, reliable, and high-quality service has made us the go-to choice for maintenance in North Central Illinois.