Propulsion Motor Bearings and Thrust Bearings for Naval Application

Innovative Power Transmission
Propulsion
Motor Bearings and
Thrust Bearings
for Naval Application (Submarines)
Bearings for Naval Application
Technical Features
of RENK Bearings for Naval Application
The development of RENK Hannover bearings for
naval application goes back to 1950, when the first
propeller shaft bearings were manufactured.
Today, the range of RENK Hannover bearings for
naval application is extensive and extremely varied.
The classic propeller shaft bearings are complemented by free-standing marine propulsion thrust
blocks; also thrust bearings for propulsion motors,
generators, gearboxes and dredger pumps.
Fig. 1
RENK bearings are characterized by
key functional features such as:
• compact design
• self-lubricated
• electrically insulated
• low power loss
• non-magnetic
• operation in flooded conditions • shock proof
factory tests under operating conditions.
1 Thrust bearing type LAZ 280 and drive
engine bearing type LRZ 200/280 for
location of the propeller shaft in class
212 submarine. ( Courtesy HDW )
2 Propulsion bearing type
LAZFU 30-300 - AS (DE)
3 Propulsion motor Permasyn PEM
DRIVE for submarine fitted with RENK
bearing type LRZ 200/280.
( Courtesy Siemens Marine Solutions )
Fig. 2
Factory Acceptance Test
In the manufacture of naval bearings RENK do not rely
only on advanced computer aids for design and performance prediction. The bearings themselves
undergo extensive tests in the company's own
test department.
Fully equipped test rigs permit simulation of
real operating conditions, as they are specified
to occur when the vessel is in service.
There is no doubt that the submarine bearing
test rig is something special. Simulation of
inclination angles up to 60 degrees is possible
on this rig.
The trim and list movements of a ship
can be also simulated on another special test rig. The reliability of RENK
bearings for naval applications
2
Fig. 3
Bearings for Naval Application
under normal and extreme operational conditions can be
proven efficiently and dependably.
All tests are carried out under nominal load, taking into consideration the customer's specifications. All temperature and
pressure values are electronically registered during the testing
and therefore can be made available to the customer.
Fig. 4
Fig. 6
Supported by efficient CAD and FEM programmes the design
of the bearings can be enhanced to the extent where RENK
bearings operate absolutely failure free. The reliability of
RENK bearings even in borderline applications is unrivalled.
Fig. 5
The Quality Insurance System operated at
RENK is certified by DET NORSKE VERITAS in
full compliance with ISO 9001 and ISO 14001.
4 Generator bearing on the test rig for ship movement.
5 Thrust bearing type Axilus LAZ 280 tested under nominal thrust at
nominal speed and under submerged thrust at loitering speed.
6 Efficient and up-to-date CAD and FEM programmes support the design
and construction of naval bearings.
7 On the special test rig under 60° inclination a submarine propulsion motor
bearing under radial and thrust load at nominal and loitering speed.
Fig. 7
3
Extract from Reference List
for Submarine Bearings
2012
2011
2010
2009
2007
2006
2003
2001
1999
1998
1995
1994
1993
1991
1989
1987
1960
Country
Class
QuantityYard
Brazil
Italiy South Korea
India
Israel
Germany
Portugal
Spain
South Korea
Malaysia
South Africa
Greece
Turkey
Chile
Italy
Brazil
Germany
Israel
Turkey
South Korea
Israel
South Korea
Turkey
South Korea
Scorpene
4
DCNS / Brasilian Yards
212
2
Fincantieri, Italy
214
6
TKMS / DSME Korea
Scorpene
6
DCNS, Indian Yards
Dolphin
2
TKMS, Kiel
212
2
TKMS, Kiel
209 PN
2
TKMS, Kiel
S-80
4Navantia, Spain
214
3
HDW, Kiel and DSME, Korea
SCORPENE2 DCNS
209
3
HDW, Kiel and TNSW, Emden
214
4
HDW, Kiel and Helenic Shipyards
209/1400
4
HDW, Kiel
SCORPENE2 DCNS
212
2
Fincantieri, Italy
209/1400
1
HDW, Kiel
212
4
HDW, Kiel
DOLPHIN
1
TNSW, Emden
209/1400
2
HDW, Kiel
209/1200
3
HDW, Kiel
DOLPHIN
2
HDW, Kiel and TNSW, Emden
209/1200
3
HDW, Kiel
209/1400
2
HDW, Kiel
209/1200
3
HDW, Kiel
Germany
205
14
HDW, Kiel
Over the last 50 years RENK slide bearings were equipped in more than 160 submarines.
Werk Hannover
Weltausstellungsallee 21
30539 Hannover
Germany
Tel.: + 49 ( 0 ) 511.86 01-0
Fax: + 49 ( 0 ) 511.86 01-182
E-Mail: info.hannover@renk.biz
www.renk.eu
Subject to changes due to technical progress.
RH-1227 ( 7.11 ) Printed in Germany
RENK AKTIENGESELLSCHAFT