---
title: "SKF Multilog On-Line System IMx-8"
description: "Compact 8-channel online condition monitoring and vibration analysis system engineered by SKF with 4 GB onboard memory for standalone or networked rotating machine surveillance."
canonical_url: "https://nodewave.net/store/condition-monitoring/skf-imx8"
last_updated: "2026-10-04T04:04:31.097Z"
---

<note>

The **SKF Multilog On-Line System IMx-8** is a compact, **8-channel continuous condition monitoring and vibration
measurement system**. Sized no larger than a paperback book, it provides high-specification early fault detection,
adaptive alarms, and **4 GB of non-volatile buffer memory** to safeguard rotating industrial machinery against
unexpected failure.

</note>

## Executive Summary and Core Capabilities

Designed for applications where high channel-density racks are impractical, the IMx-8 packs 8 analog dynamic channels
and 2 speed/digital channels into a space-saving DIN-rail package. It simultaneously measures all connected channels to
provide synchronous vibration time waveforms, FFT spectra, and overall velocity metrics.

<callout color="green" icon="i-lucide-shield-check">

**4 GB Autonomous Buffer Memory:** The unit includes 4 GB of internal memory configured specifically for trend data,
transient dynamic event captures, and offline storage. If plant network connectivity drops, the IMx-8 buffers data
continuously without data loss and automatically resynchronizes once reconnected.

</callout>

<accordion>
<accordion-item icon="i-lucide-zap" label="Advanced Signal Diagnostics & SKF Enveloping">

- **SKF Acceleration Enveloping:** Applies multi-stage digital filtering to isolate low-energy repetitive impact signals
generated by micro-cracks in rolling element bearings and gear mesh faults.
- **Machine Tool Crash Detection:** Includes high-speed response logic capable of triggering relay drivers in under
milliseconds during machine spindle collisions.
- **Multi-Parameter Gating:** Suppresses false alarms by correlating vibration metrics against operating conditions such
as speed, load, or process state.

</accordion-item>

<accordion-item icon="i-lucide-cpu" label="Stand-Alone Mode & Software Ecosystem">

- **Standalone or Networked:** Functions as an autonomous local monitor with direct mobile app configuration via
Bluetooth 5.0, or connects seamlessly to the **SKF @ptitude Observer** software suite and SKF Remote Diagnostics
Cloud.
- **Versatile Field Interfaces:** Interfaces with external DCS/PLC systems via Modbus TCP/IP, Modbus RTU (RS-485), and
CAN-bus interfaces.

</accordion-item>
</accordion>

---

## Technical Specifications Matrix

<tabs>
<tabs-item label="Analog Inputs and Measurement">
<table>
<thead>
  <tr>
    <th align="left">
      Parameter
    </th>
    
    <th align="left">
      Specification Details
    </th>
  </tr>
</thead>

<tbody>
  <tr>
    <td align="left">
      <strong>
        Analog Channels
      </strong>
    </td>
    
    <td align="left">
      8 simultaneous dynamic or DC inputs (Accelerometers, Velocity, Proximity, Volt)
    </td>
  </tr>
  
  <tr>
    <td align="left">
      <strong>
        Digital / Speed Channels
      </strong>
    </td>
    
    <td align="left">
      2 channels for optocoupler or inductive speed sensors
    </td>
  </tr>
  
  <tr>
    <td align="left">
      <strong>
        Frequency Response
      </strong>
    </td>
    
    <td align="left">
      DC to <span className="katex">
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                </mtext>
              </mrow>
              
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                40\text{ kHz}
              </annotation>
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                kHz
              </span>
            </span>
          </span>
        </span>
      </span>
      
       synchronous sampling across all channels
    </td>
  </tr>
  
  <tr>
    <td align="left">
      <strong>
        Measurement Accuracy
      </strong>
    </td>
    
    <td align="left">
      Amplitude: <span className="katex">
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            </span>
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          </math>
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            </span>
            
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            </span>
            
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        </span>
      </span>
      
      )
    </td>
  </tr>
  
  <tr>
    <td align="left">
      <strong>
        Signal Processing
      </strong>
    </td>
    
    <td align="left">
      Overall RMS, Peak, Peak-to-Peak, True Peak, SKF Enveloping (gE)
    </td>
  </tr>
</tbody>
</table>
</tabs-item>

<tabs-item label="Memory, Power, and Housing">
<table>
<thead>
  <tr>
    <th align="left">
      Component
    </th>
    
    <th align="left">
      Specification Details
    </th>
  </tr>
</thead>

<tbody>
  <tr>
    <td align="left">
      <strong>
        Internal Memory Storage
      </strong>
    </td>
    
    <td align="left">
      <span className="katex">
        <span className="katex-mathml">
          <math xmlns="http://www.w3.org/1998/Math/MathML">
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                </mtext>
              </mrow>
              
              <annotation encoding="application/x-tex">
                4\text{ GB}
              </annotation>
            </semantics>
          </math>
        </span>
        
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            </span>
            
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            </span>
            
            <span className="mord,text">
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                GB
              </span>
            </span>
          </span>
        </span>
      </span>
      
       total (<span className="katex">
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                GB
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            </span>
          </span>
        </span>
      </span>
      
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      </span>
      
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      </span>
      
       system)
    </td>
  </tr>
  
  <tr>
    <td align="left">
      <strong>
        Power Supply Options
      </strong>
    </td>
    
    <td align="left">
      Power over Ethernet (PoE 802.3af) or <span className="katex">
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        </span>
      </span>
      
       redundant terminal
    </td>
  </tr>
  
  <tr>
    <td align="left">
      <strong>
        Enclosure & Mounting
      </strong>
    </td>
    
    <td align="left">
      Compact DIN-rail mount or optional IP65 field enclosure
    </td>
  </tr>
  
  <tr>
    <td align="left">
      <strong>
        Operating Temperature
      </strong>
    </td>
    
    <td align="left">
      <span className="katex">
        <span className="katex-mathml">
          <math xmlns="http://www.w3.org/1998/Math/MathML">
            <semantics>
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                  40
                </mn>
                
                <mtext>
                  °C
                </mtext>
              </mrow>
              
              <annotation encoding="application/x-tex">
                -40\text{ °C}
              </annotation>
            </semantics>
          </math>
        </span>
        
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          <span className="base">
            <span className="strut" style="height:0.7778em;vertical-align:-0.0833em;">
              
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       to <span className="katex">
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      )
    </td>
  </tr>
</tbody>
</table>
</tabs-item>

<tabs-item label="Connectivity and Software">
<table>
<thead>
  <tr>
    <th align="left">
      Interface
    </th>
    
    <th align="left">
      Protocol / Support
    </th>
  </tr>
</thead>

<tbody>
  <tr>
    <td align="left">
      <strong>
        Ethernet Port
      </strong>
    </td>
    
    <td align="left">
      RJ-45 10/100 Mbps (Modbus TCP/IP, NTP time sync, SKF Protocol)
    </td>
  </tr>
  
  <tr>
    <td align="left">
      <strong>
        Serial / Fieldbus Ports
      </strong>
    </td>
    
    <td align="left">
      RS-485 (Modbus RTU), CAN-bus interface
    </td>
  </tr>
  
  <tr>
    <td align="left">
      <strong>
        Mobile Configuration
      </strong>
    </td>
    
    <td align="left">
      Bluetooth 5.0 via iOS and Android IMx Manager mobile apps
    </td>
  </tr>
  
  <tr>
    <td align="left">
      <strong>
        Software Platform
      </strong>
    </td>
    
    <td align="left">
      SKF @ptitude Observer / SKF Cloud Remote Diagnostics
    </td>
  </tr>
</tbody>
</table>
</tabs-item>
</tabs>

---

## Target Industry Applications

<card-group>
<card icon="i-lucide-wind" title="Wind Turbine Drivetrains">

Continuous tracking of gearbox high-speed shafts, generator bearings, and planetary gear stages in wind turbines.

</card>

<card icon="i-lucide-settings" title="Machine Tool Spindles">

Millisecond crash detection and precision spindle bearing health monitoring for automated machining centers.

</card>
</card-group>

---

## External Resources and Documentation

Access datasheets, firmware downloads, and user guides directly from SKF:

<card-group>
<card icon="i-lucide-external-link" title="Official SKF IMx-8 Product Portal" target="_blank" to="https://www.skf.com/group/products/condition-monitoring-systems/surveillance-systems/on-line-monitoring/imx">

Explore product specifications, certification documents, and regional sales contact points on the SKF site.

</card>

<card icon="i-lucide-book-open" title="SKF Condition Monitoring Portfolio" target="_blank" to="https://www.skf.com/group/products/condition-monitoring-systems">

Review SKF's complete line of online surveillance systems, wireless sensors, and @ptitude software tools.

</card>
</card-group>