SmartBolts

Throwback Thursday: The story behind SmartBolts®

What if a bolt could show you when it is properly tightened and when it is loose? That’s what Chuck Popenoe asked way back in 1966!

Chuck was an aerospace engineer, applied physicist and prolific inventor. He had seen a bolt with a visual tension indicator, but it would only show tension for one tightening cycle and was not reusable. What the world needed was an indicator that would accurately show tension through repeated tightening and loosening, so he set out to create one.

With 35 U.S. and international patents to his name, Chuck patented his Direct Tension Indicator bolt design in 1966. He later developed the concept into SmartBolts®, making changes in fastener tension visible through a red-to-black color change.

Precision defined Chuck’s career. At the National Institute of Standards and Technology (NIST), he designed a system to measure and certify light bulb output against industry standards. When the SmartBolts team visited NIST in 2012, the system was still in use, 30 years after Chuck retired.

Chuck believed inventing required imagination, visualization and persistence. Those principles remain at the heart of SmartBolts today, making hidden tension visible so teams can see when their critical joints need attention.

Swipe through to meet Chuck, the man behind SmartBolts.

https://tinyurl.com/4avpzn5m

When conveyor pulley bolts lose tension, alignment is usually the next problem.

And once alignment shifts, wear, downtime and bigger maintenance issues can follow.

These critical bolted connections all depend on proper tension to stay secure under constant load, vibration, and impact:

- Bearing Blocks
- Pulley Mounts & Hubs
- Drive & Take-Up Frames
- Idler Frames

SmartBolts® provide a clear way to verify bolt tension during installation and routine walk-arounds. The patented Visual Indication System™ makes tension changes visible at a glance, helping maintenance teams quickly see when a critical joint may need attention.

Swipe through to see the conveyor pulley locations worth checking.
Download the full conveyor pulley guide here: https://tinyurl.com/r5xspbkt

Another SmartBolts® order heading out.

This batch of black oxide-coated SmartBolts is going to a long-standing manufacturing customer for hoist lift ring applications.
The bolt’s offset neck provides clearance for flipping moulds, dies and other fixtures. They allow 180° forward and backward bail movement, with a body that can swivel around the mounted axis point to support die-flipping, pivot-and-rotate, and side-lifting loads.

These SmartBolts include contamination seals, a protective coating and a Data Shield feature, protecting the Visual Indication System™ so you can still clearly see clamp force in demanding operating conditions.

Have a critical bolting application? Get in touch and let’s see how SmartBolts can help: https://smartbolts.com/get-started

What happens when swing gearbox bolts lose tension?

When swing gearbox bolts lose tension, the joint can start to move under vibration, dynamic loading, and continuous machine movement.

This can lead to misalignment, accelerated wear, component stress, and unplanned maintenance on mining excavators.

Torque checks can also be difficult to rely on, as readings may be affected by friction, lubrication and surface conditions.

SmartBolts® help address this by providing a visual indication of actual bolt tension, allowing technicians to quickly assess bolt condition during inspection.

🔴 Red means loose.
⚫ Black means tight.

No batteries. No sensors. No specialised inspection equipment.

Just SmartBolts.

Ideal for swing gearbox applications on CAT 6030, 6040 and 6050 mining excavators.

Learn more: https://tinyurl.com/2ryw4fbe

We're pleased to announce that SmartBolts® has signed a Non-Binding Statement of Intent with GERSAN ELEKTRIK A.S. and MGF Development to explore strategic opportunities for global collaboration.

The Statement of Intent establishes a framework for the parties to explore opportunities in manufacturing, commercialization, distribution, financing, and technology development. It reflects a shared interest in evaluating how each organization's expertise can help expand the global reach of innovative technologies across critical infrastructure and industrial markets.

This milestone supports SmartBolts' long-term strategy to expand the application and adoption of its technology while exploring new opportunities for growth and innovation alongside industry leaders.

Read the full announcement: https://tinyurl.com/5pz39hup

Shipping soon: EX5600 Track Frame Kit with Washers

This shipment includes SmartBolts® Aftermarket Kits for a 596-ton hydraulic excavator track frame.

Equipment details:
- Operating Weight: 596 tons
- Engine Output: 3,000hp
- Bucket Capacity: 45 yd³

Each kit includes the required SmartBolts, hardened washers, and spacers, with components QA-inspected before shipment.

SmartBolts Aftermarket Kits areengineered-to-match OEM specifications and are direct replacements for critical fasteners in supported CAT, Hitachi, and Komatsu excavator models.

See supported excavator models here: https://smartbolts.com/products/aftermarket