BEAROMOS®2020 BEARing MOnitoring System For oil-lubricated slide bearings, Überblick



Beschreibung

Detect the onset of bearing damage even before signs of overheating


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BEAROMOS®2020

BEARing MOnitoring System

For oil-lubricated slide bearings

www.schaller-automation.com

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Detect the onset of

bearing damage

even before signs of overheating

Operating ranges of hydrodynamic slide bearings

The BEAROMOS®2020 is an innovative monitoring system for oil-
lubricated slide bearings, which detects the transition from
sliding friction to mixed friction.
If it occurs during nominal bearing operation, this transition can
cause incipient bearing damage.
The innovation in this application uses the physical phenomenon
of the “Seebeck effect”, which generates a voltage as soon as 2
different metals, normally separated by the oil film, come into
contact with each other.
On the first temperature change, a thermoelectric voltage is
generated, which is detected by the sensor.
The system consists of an easy-to-install sensor that can be
attached to for example an engine frame, at  level of its crankshaft
end.
A shaft is integrated in the sensor, which is bolted to the
crankshaft, e.g. using a simple adapter. A built-in compensator

ensures that any radial and axial vibrations of the crankshaft do
not damage the sensor.
The sensor housing is bolted to the existing cover on the engine
frame, which is usually given at the crankshaft center level.
Hydrodynamically lubricated slide bearings are designed so that
they operate within the fluid friction range.
The bearings only move out of this range to mixed friction for a
short time in rare cases (e.g. start/stop), and they then see
increased wear.
BEAROMOS®2020 detects the deviation from normal fluid
friction and can, for example, detect an anomaly when mixed
friction occurs while running at constant engine operation to
warn of possible acute severe damage in one of the main
bearings.
Possible causes of mixed friction on the rotating shaft include:
Particles in oil, consequences of cavitation, bearing wear,
geometric deviations on bearing journals/shells, etc.

-1-

Condition monitoring concept

According to: Tchakoua et al., Energies 7/4, 2014

Development of mechanical failures over time

Increasing prevention corridor with additional condition monitoring

• Detection of mixed lubrication in journal bearings

• Detection of vibration anomalies

En

gine c

on

dit

ion

Time

Friction

Oil Mist

(OMD)

EXPLOSION

Prevention Corridor

Vibrations

ACCOMOS

VN301plus

CONFIDENTIAL

BEAROMOS

2

Online monitoring of the main bearings of propulsion/

auxiliary engines

Developed in cooperation with RWTH Aachen University,

Germany

Minimises maintenance costs

Very easy to install, also as retrofit

Proven faster response than bearing temperature

monitoring

SCHALLER AUTOMATION product philosophy

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Software

The supplied software uses the sensor signal to display the

status of the monitored bearings.

Together with the speed detected by the sensor, it is

possible to make a statement about the status of how the

bearing is running: hydrodynamic friction or mixed friction.

Bearing status is displayed as a bar graph (green<->yellow)

Long-term trends can be shown

Records the last transition from hydrodynamic friction to

mixed friction with date, time, duration and revolution

speed

Continuously monitors communication between software

and sensor via LED indicator.

Screenshots can be taken of current display

Possible to export the current data content from the graph

to a CSV file

The transition from hydrodynamic friction to mixed friction

and vice versa can also be displayed as an average over time

There is a visual status indicator, if threshold value

is exceeded

Information about the condition of the bearings

concentrated to a minimum

Long-term observation of bearing condition is possible

Sensor Installation

3

Weitergabe sowie Vervielfältigung dieses Dokuments, Verwertung und Mitteilung seines Inhalts sind verboten, soweit nicht ausdrü

cklich gestattet. Zuwiderhandlungen verpflichten zu Schadenersatz. Alle Rechte für den Fall der Patent- und Gebrauchsmustereint

ragung vorbehalten.

88

140

adjustable to any

application

Toleranzen

Gewicht [kg]

Maßstab

-

4.300

1:1

Werkstoff, Halbzeug

Blieskastel / Germany

Abtlg.

Freigegeben durch

Dokumentenstatus

Ex-Schutz-Beauftragter

Dokumentenart

TE

Dr. H. Brünnet

Freigegeben

-

Baugruppenzeichnung

Original

Erstellt durch

Geprüft durch

Geändert durch

Ausgabedatum

Ausgabe Blatt

A2

S. Schwarz

P. Adams

-

15.05.2019

001

2 / 2

Projektionsmethode

Benennung, zus. Benennung

Sachnummer

Montage und Demontage Bearomos BS-45

153200_2

Install and disassembly Bearomos BS-45

Existing center hole

Hole circle Ø115 (6x60°)

Existing threaded

hole at shaft

Optional adapter,

adjustable for all

applications

Bolt circle Ø115 (6x60°)

Cover, e.g. of the engine

stand

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Safety for you and your engine:

Worldwide!

Headquarters:

SCHALLER Automation

Industrielle Automationstechnik GmbH & Co. KG
Industriering 14
D-66440 Blieskastel
Tel.:

+49 6842 508 0

Fax:

+49 6842 508 260

Mail: info@schaller.de
www.schaller-automation.com

Key Account Management Center:

Singapore

Schaller Automation Pte Ltd.
114 Lavender Street
#09-93 CT Hub 2
Singapore 338729
Phone:   +65 6643 5151 (24/7)
Fax:

+65 6643 5150

Mail: info@schallersingapore.com

ISO 9001/2015 certified

China

Schaller Automation - China
Room 401, Juyang Mansion
No. 1200 Pudong Avenue,
Shanghai 200135, P.R.China
Phone:   +86 - 21 - 5093 - 7566
Mobile:   +86 - 1390 - 1890 - 736
Fax:

+86 - 21 - 5093 - 7556

Mail: info@schallerchina.cn

USA

Schaller Automation LP
811 Shotgun Road
Sunrise, FL 33326
United States of America
Phone:   +1 954 794 1950
Mobile:   +1 561 289 1495
Fax:

+1 954 794 1951

Mail: info@schalleramerica.com

Power supply

18 - 32 V DC (nominal 24 V DC)

Current consumption

max. 400 mA

Temperature range

-25°C to +70°C

Speed range

up to 1,500 rpm

Diameter

140 mm

Total length up to flange

125 mm

Weight

4.5 kg

Attachment

Application-specific adaptation

Protection rating

IP56

Technical data of the sensor

www.schaller-automation.com

BEAROMOS V3.01

10/2019