LUBExpert ON-GUARD: condition-based automatic bearing lubrication

70% of bearing failures are related to incorrect lubrication: starvation, over-greasing, contamination. Calendar-based greasing ignores the actual load, temperature and condition of the assembly. LUBExpert on the SDT340 solved dosing during manual rounds. LUBExpert ON-GUARD moves that logic into an automatic system with acoustic control of every point.

---

How it works

1. An acoustic sensor on the bearing housing (or an adjacent point) continuously assesses the friction level.
2. The controller compares the signal against the "lubrication needed" threshold.
3. The pulsator delivers a precise dose of grease — not on a schedule, but on evidence.
4. Data goes to UAS3 for trending and reporting.

Lubrication becomes part of condition-based maintenance rather than a calendar procedure.

---

Why ON-GUARD beats timer-based auto-lubricators

Parameter	Timer / calendar	ON-GUARD
Accounts for real load	no	yes
Over-greasing	frequent	eliminated
Evidence trail	none	acoustic log
Multi-point	limited	several points per controller
SDT340 integration	none	one ecosystem

At plants with hundreds of points, grease savings reach 30–60% of consumption while bearing life increases. See LUBExpert grease savings.

---

Typical deployment layouts

Mining conveyors

Take-up and head pulleys, hard-to-reach bearings — ON-GUARD reduces the number of rounds in dusty areas.

CHP plant fans and ID fans

High temperature makes manual greasing hazardous — an automatic dose is delivered when the acoustic level rises.

Pump stations

The "SDT340 route plus ON-GUARD on the critical pumps" package — manual control over the rest of the fleet, automation on the bottleneck.

---

Link to the reliability programme

ON-GUARD does not replace vibration or ESA — it is the lubrication layer of the overall strategy:

• SDT ultrasound — leaks, steam, electrical, manual greasing.
• ON-GUARD — automation of routine points.
• Artesis — motor and load via current signature (roadmap).

Before deployment, audit your grease quantity standards and clear up the lubrication myths.

---

A 90-day pilot

1. Select 10–20 bearings with a history of frequent failures.
2. Take a manual LUBExpert baseline.
3. Install ON-GUARD and set the thresholds.
4. Compare grease consumption and the number of "hot" bearings after three months.

---

Material

• LUBExpert ON-GUARD product page
• LUBExpert mode on the SDT340
• Consequences of over-greasing
• SDT — manufacturer

KEG TRK supplies and commissions LUBExpert ON-GUARD in Kazakhstan. To request a demonstration: +7 (7172) 64-08-69.