The ON-GUARD, from SDT Ultrasound Solutions is a Multi-Point, Automated Precision Lubrication System designed to ensure critical production equipment is greased right.

By closely monitoring friction levels, the ON-GUARD knows when to inject a bearing automatically and precisely with the exact amount of lubricant required to return it to optimal operating conditions. Thus, saving maintenance and reliability teams expensive grease and precious time, all while providing continuous feedback on the condition of your most critical rotating machinery.
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Download the Latest ON-GUARD Case Study

Learn how this 24-Hour Biomass facility used precision lubrication injections with the ON-GUARD in conjunction with their online vibration monitoring system to safely extend this functionally failed bearings life until the next planned shutdown.

Key Features

LUBrain™ Precision Lubrication Algorithm

SDT's LUBrain™Lubrication Algorithm drives SDT Ultrasound Solutions Precision Lubrication Devices. Using a combination of real-time & historic data, the LUBrain powers the ON-GUARD System to lubricate bearings automatically & precisely

Restore a perfect film of lubrication to your bearings, by greasing them only as needed - creating an optimal separation of surfaces.

High Quality Accurate & Repeatable Data Collection

The ON-GUARD communicates with your critical assets through the CONMONSENSE Sensor, the world's most accurate and versatile contact ultrasound sensor. The CONMONSENSE continuously monitors friction levels and relays that information back to the ON-GUARD's, browser-based, integrated software. Thus providing accurate, actionable, and up-to-date data that maintenance and reliability teams can trust.

Up to 8 Measurement Points Per System

The ON-GUARD monitors and lubricates up to 8 separate points per system. Each system comes with 8 CONMONSENSE true 4-20mA sensors, 8 lubricators, and 8 sensor paired shielded cables + lubrication distribution lines all varying from 5 to 30 meters in length. Installation is easy with the ON-GUARD from SDT Ultrasound Solutions

ON-GUARD's Embedded Software

Asset Stress Test

Gain a comprehensive view of your system at a glance with the ON-GUARD Stress Test Snapshot. 


Enjoy the peace of mind that comes with ON-GUARD's blend of automation, precision measurements, and patented data-driven decision making.


Trending Lubrication Data

Operators can view the entire process from the convenience of their web browser, no matter their current whereabouts. 


Continuously monitor friction levels & a number of other parameters from the integrated browser-based dashboard.




Custom System Configuration

Configure your system to your assets and organization. 


Fully customize cartridge size, injection quantity & speed, measurement acquisition mode (Manual or LUBrain) & time. Triggering options can also specify alarms & the amount of time an asset must spend in alarm before an injection is triggered.

Why more & more Lubrication Programs are opting for Ultrasound over Time-Based Formulas?

80% of Premature Bearing Failures are Lubrication Related!

We ask lubricant to do a lot for our rotating machinery; reduce friction, dissipate heat and provide a seal that protects against contamination. But after millions of pounding rotations, a lubricant’s additives are spent, therefore grease replenishment is required. 


Of the billions of bearings used throughout manufacturing, 95% of them are sealed for life and there is very little maintenance can do to help them last. For the 5% that are maintainable, companies must adopt a strategic asset management plan that is effective, economical, and most importantly, safe. It all sounds too easy but with so many factors to consider, it’s quite a challenge to check every box. Considerations include asset criticality, accessibility, lifecycle analysis, lubrication intervals, condition monitoring data, spare parts inventory, defect elimination, and yes… the convenience of manual labour to perform the task. It is this last point that has led to rampant corner-cutting, all to the detriment of the bearing. 


The challenge of building a solution that combines the safety and convenience of an automatic lubricator with the science and logic of an ultrasonic-guided algorithm was left to SDT, the world’s favourite ultrasound company. And now the long-awaited release of LUBExpert ON-GUARD, a patented solution to trigger automatic lubrication systems, is here.


Contact SDT Ultrasound Solutions today, Hear More about how the LUBExpert ON-GUARD can fine-tune and automate your lubrication program. Get more out of your bearings, get more out of your lubricant, grease bearings right with us. 

ON-GUARD Product Demonstration

Why SDT... Why Ultrasound?

For millennia, humans relied upon a keen sense of hearing to alert us of danger, and today that same attribute warns us when our assets are about to fail. The earliest indicator of a change in an asset’s condition are in the ultrasonic domain, no matter how subtle those changes might be. Ultrasound senses micro-sonic changes in an assets function, allowing us to anticipate failure and plan  maintenance.


At SDT Ultrasound Solutions, we enable our customers to achieve their operational objectives by improving the reliability of their assets. We have supported industry with our advanced ultrasound solutions for nearly 50 years; Promoting more reliable, sustainable, and safe manufacturing processes and empowering maintenance and reliability teams to better understand the health of their most critical production assets.

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SDT Ultrasound Solutions • 7677 County Rd 2, Cobourg, ON • Phone: 1-800-667-5325 | 1-905-377-1313 • email: [email protected]