Wärtsilä Linesafe

bearing
PRODUCT LE AFLET

The Wärtsilä Linesafe bearing is an evolutionary design which has been developed to
combine the fundamentals from the existing shaftline bearing range into one simple
design that meets the market needs for today and for the future.

LEAN PHILOSOPHY ALLOWS FLEXIBILIT Y

Our engineers listened to customers and developed
a solution that meets market demands - the Wärtsilä
Linesafe bearing. Flexibility is allowed within the
standard configuration, with one bearing design suitable
for multiple different configurations, such as forced
lubrication or self-lubrication. This means that Wärtsilä
can meet the demands of any customer, with improved
response times and a first-rate product tailored to their
needs. As it is fitted with the PT-100 device, the Wärtsilä
Linesafe bearing comes digital-ready as standard. This
allows for modern condition monitoring systems to be
easily integrated.

The Wärtsilä Linesafe bearing offers a lean and

cost-efficient design that is flexible to specific
customer needs. The customer is always in control of
the final product.

Fig.1 The Wärtsilä Linesafe

bearing standard design

HIGHEST QUALIT Y DESIGN AND MATERIALS

The Wärtsilä Linesafe bearing is a fully split, hydrodynamic length to shaft diameter, along with our unique white
bearing with a self-aligning design. It consists of a metal application process, allows for the highest radial
modular housing made of high-quality cast iron. The plain loads. The Wärtsilä Linesafe bearing also requires less
bearing is also made of high-quality cast iron, lined with installation space due to its smaller size and lighter
environmentally friendly white metal, giving the optimal weight, yet has similar radial loads compared to similar
running surface. The ideal ratio between bearing shell designs on the market.

11 / 2017
Wärtsilä Linesafe bearing
LUBRICATION increased distance between the Technical specification
Self-lubrication comes as standard housing legs. This gives space for
due to the high-quality cast the intermediate shaft to be stored PRODUCT OPTIONS
aluminium oil ring and oil scraper temporarily. With this clever design, Bearing type Pedestal or saddle*
fitted on the bearing. Additionally, the the Wärtsilä Linesafe bearing helps
Bearing seat Spherical seat or straight seat*
modular design enables connection by saving time and providing a safe
to external forced lubrication if environment for service personnel Bearing housing Cast iron or spheroidal cast iron*
necessary. Oil leakage is prevented during installation and shaft repair. Shaft pass cover Cast aluminium or SRtP kit*
by means of two shaft pass covers,
Lubrication Self lubrication or external
made of high-quality cast aluminium. OPER ATION lubrication*
The oil scrapper joints and deflection The self-aligning design assists an
Cooling Natural convection cooling or water
rings allow the shaft to freely rotate, accurate alignment and helps to avoid
cooling*
preventing dirt particles from entering misalignments in operation, overloads
the housing. and wear down. This increases the Device control Local thermometer, PT-100 and
lifetime of both the rotary shaft and dipstick (other devices on request)
INSTALL ATION the bearing surface. Because of its External paint Grey epoxy primer RAL 7038 (other
The Wärtsilä Linesafe bearing is a capability to accept higher angular colours are available on request)
fully split and self-aligning design, misalignments, it is the ideal solution
facilitating easy installation and for vessel types or hull structures STANDARD OPER ATING CONDITIONS
service. Moreover, it is highly that have higher hull bending effects, Maximum pressure static 1.0MPa or 1.5MPa*
tolerant of installation misalignments, for example, when the stern tube is (10bar or 15bar*)
designed to correctly operate on designed with only one AFT bearing.
Maximum pressure dynamic 1.8MPa (18bar)
permanent sloped shaft lines of up When it is fitted with our SRtP kit,
to 4° without needing any custom the bearing ensures compliance Oil grade ISO VG100 (SAE 30)
designed seal. The shaftline survey, with the latest Safe Return to Port Maximum environmental 45ºC (113ºF)
inspection and serviceability in requirements. temperature
situ is significantly improved by the
*These options do not come as standard but are available on request.
Fig.2 The Wärtsilä Linesafe bearing
being measured All measurements are in accordance with DINSPEC and SAE regulations. All specified technical data above is subject to change without notice and
should be verified at the time of order.

Shaft diameter Bearing shell length Weight Standard working parameters

FEATURES ADVANTAGES BENEFITS Bearing
Min Max Radial Min Max
size mm in kg lbs
New white metal Greater adhesion of white metal to Higher radial load capacity per mm in mm in load (kN) rpm rpm
application process. the bearing shell. bearing size, resulting in cost 165 100 3.94 165 6.5 120 4.72 106 233.69 19.8 80 347
savings. 150
210 166 6.54 210 8.27 5.91 142 313.06 31.5 62 273
240 211 8.31 240 9.45 180 7.09 176 388.01 43.2 54 239
Spherical seat as standard. Accepts higher angular Operates effectively on ships with
misalignment. hull deformation. 270 241 9.49 270 10.63 200 7.87 219 482.81 54.0 47 212
300 271 10.67 300 11.81 230 9.06 267 588.63 69.0 43 191
Self-aligning design. Slight installation misalignments are Easy installation and alignment. 330 301 11.85 330 12.99 250 9.84 305 672.41 82.5 38 173
corrected due to the spherical seat. 280
360 331 13.03 360 14.17 11.02 354 780.44 100.8 35 159
400 361 14.21 400 15.75 300 11.81 420 925.94 120.0 31 143
Modular design. Gives the ability for a customer The customer is fully in control of
to select any optional extras they the product they are purchasing. 430 401 15.79 430 16.93 330 12.99 551 1214.75 141.9 29 133
would like. 470 431 16.97 470 18.5 360 14.17 661 1457.26 169.2 26 122
510 471 18.54 510 20.08 390 15.35 768 1693.15 198.9 24 112
Upper and lower bearing In the event of an emergency, the Additional level of reliability and 420
550 511 20.12 550 21.65 16.54 902 1988.57 231.0 22 104
shell interchangeable. upper bearing shell can be used as increased safety.
590 551 21.69 590 23.23 460 18.11 1083 2387.61 271.0 20 97
the lower shell to support the shaft.
630 591 23.27 630 24.8 490 19.29 1286 2835.14 308.7 19 91
Temperature sensor and oil Allows for complete control of No need to purchase extras as 670 631 24.84 670 26.38 520 20.47 1397 3079.86 348.4 18 86
level dipstick included. temperature and oil levels. options come as standard. 710 671 26.42 710 27.95 550 21.65 1715 3780.93 390.5 17 81
750 711 27.99 750 29.53 580 22.83 1885 4155.71 435.0 16 76
One oil sump, not the standard two. Reduction in oil quantity. Lower bearing running costs.
800 751 29.57 800 31.49 620 24.41 2195 4839.15 496.0 14 72
Wärtsilä Linesafe bearing
A C

B
Shaft sizes 165 210 240 270 300 330 360 400 430 470 510 550 590 630 670 710 750 800
mm 460 510 570 600 630 700 720 740 860 890 940 1050 1100 1140 1170 1200 1250 1340
Width A
in 18.11 20.08 22.44 23.62 24.8 27.56 28.35 29.13 33.86 35.04 37.01 41.34 43.31 44.88 46.06 47.24 49.21 52.76
mm 411 471 501 552 612 646 689 734 781 844 902 967 1037 1104 1167 1225 1289 1364
Height B
in 16.18 18.54 19.72 21.73 24.09 25.43 27.13 28.9 30.75 33.23 35.51 38.07 40.83 43.46 45.94 48.23 50.75 53.7
mm 336 361 402 425 453 473 503 523 553 583 621 651 691 807 846 892 922 987
Length C
in 13.31 14.21 15.83 16.73 17.83 18.62 19.8 20.59 21.77 22.95 24.45 25.63 27.2 31.77 33.31 35.12 36.3 38.86

Wärtsilä is a global leader in complete lifecycle

power solutions for the marine and energy markets.
By emphasising technological innovation and total
efficiency, Wärtsilä maximises the environmental and
economic performance of the vessels and power
plants of its customers.

wartsila.com/sealsandbearings

WÄRTSILÄ® is a registered trademark. Copyright © 2017 Wärtsilä Corporation.

Specifications are subject to change without prior notice.