On-site Services
Our tools do their work at the coalface; so do we. Our team complete comprehensive on-site testing to eliminate bolt failure and leaks before they lead to extremely costly downtime, as well as provide accredited training, project management and technical consulting for improved efficiency and better safety.
On-site project completion
We bring the latest technology, the right people and best tooling in the business to your site to complete a huge range of projects, keeping your site safe and your profits flowing. Our system is primarily one of prevention and our end goal is to eliminate critical bolted joint failure, leaks, costly downtime, potential safety hazards and guesswork. Our areas of expertise include:
Ultrasonic Bolt Tension Monitoring
Hydraulic Torque Tightening
Hydraulic Coupling Bolt Systems
Heat Exchangers and Pressure Vessels
Valves and Turbines
Hydraulic Bolt Tensioning
Hydraulic Nuts
Structural joints on Ball, Rod and SAG Mills
Slew Ring Bearings
Liner Bolting on Ball, Rod and SAG Mills
On-Site Services Case Studies

Tanks project in Northern WA

Stacker Reclaimer Slew Ring Bearing Bolts – Using ultrasonic measurement technology to improve tensioning accuracy

Elimination of Exciter Motor Bolting Failure

Grinding Mills Structural Critical Fasteners

Reclaimer Slewing Ring Bearing Bolts

Railcar Dumper Refurbishment

Mill Liner Bolting Services – NTS
Technical consulting
With bolt failure causing costly unscheduled maintenance that can quickly run into the hundreds of thousands, it makes sense to spend time up-front ensuring your bolting has been done to the highest standards, by the most qualified team. We can work with you on a number of bolting solutions to increase reliability and ultimately improve uptime.
Project Management
Supervision of Critical Bolting Application
- Critical Review of Bolting Issues
- Fastener Tensioning Procedures
- Fastener Failure Analysis
- Assembly Techniques
Design and Planning of Bolted Solutions
Manufacturing, Planning and Quality Control
- Bolting Process Improvement
- Verification of Bolting Practices
Training
We have developed a range of training packages that upskill your team in bolting failure prevention and correct maintenance. We can also fully tailor a package to address any needs or deficiencies within your team, delivered on-site by our experienced technicians. Some of these packages include:
On-site Training/In-house Training
Occupational Health and Safety Operation Package
Tool Operation and Maintenance Training
Tailored Packages
Efficient & reliable tensioning equipment
Our range of precision engineered hydraulic bolt tensioners and tensioning equipment are guaranteed to assist in reducing maintenance and shutdown times.
Lightweight, ultra-accurate and reliable, we offer bolt tensioners, hydraulic nuts and bolts, CamNuts and accessories that can be quickly and easily fitted using standard pumping equipment such as Hand Operated, Electric Hydraulic and Air Hydraulic Pumps.
Each item brings a cost effective and efficient solution in a compact system which is simple, safe and easy to use.
“During the shutdown, Daniel and Cassia did a fantastic job accommodating our requirements to check the bolts on the secondary crusher. Their flexibility and support were greatly appreciated—thank you both!”
Testimonial
Crusher Specialist, Boddington Gold Mine
Testimonial
Maintenance Superintendent & Senior Engineer
Karara Mining Limited
“Thanks to Norbar On-Site Services for providing a detailed report on the recent Vault Rail Bolt Testing. Your commitment to staying on-site to complete the job was greatly appreciated. The expertise and dedication of your team ensured a smooth and efficient process.”
“Trevor has a wealth of bolting experience, knowledge and solutions. His team are well trained, safe, efficient and flexible.”
Testimonial
Marvin Muller – Processing Manager
Northern Star Resources Limited
Testimonial
Dale Wolfenden – Linkforce Project Manager
“Our team had positive things to say about working with Norbar & Boltstress. Despite a few curve balls and date changes, we successfully completed the project. The onboarding process was smooth and efficient, thanks to Norbar and Boltstress’ proactive team. It was truly a pleasure working with you all.”
“Working with Norbar for our primary and secondary mill maintenance has been a game-changer for our operations. From the moment we engaged their services, the efficiency and professionalism were evident.
For our primary mill, the entire process – from establishing permits to setting up tooling and signing off on the Job Hazard Analysis (JHA) – was completed seamlessly within just 3 hours. What impressed us the most was the swift turnaround time for re-monitoring and adjusting bolts in each position, taking our crew only 60 to 90 minutes per position. With no need for scaffolding and a meticulous approach, we achieved the desired results effectively.
Similarly, for our secondary mill, the efficiency and precision exhibited by Norbar were exemplary. The re-monitoring and adjustment of bolts in each position took a similar timeframe, ensuring thoroughness without sacrificing productivity. The fact that no scaffold was required further streamlined the process, making it hassle-free and efficient.
Overall, we couldn’t be more pleased with the results delivered by Norbar. Their expertise and dedication have significantly contributed to the smooth operation of our mills, and we look forward to continuing our partnership for years to come.”
Testimonial
Derek Phillips-Jones – Newmont
Shutdown Planner Tanami Operations
Testimonial
Major Works Planner, Ports Engineering & Reliability – RioTinto
“We greatly appreciate Norbar On-Site Services’ prompt supply of the bolt stress report and the dedicated effort in completing the SL1E slew bearing hold-down studs. The team’s professionalism and expertise were evident throughout the process. Great job—we look forward to working with you on future projects!”

