WÄRTSILÄ SLIDE BEARINGS TYPE G PRODUCT RANGE AND TECHNICAL INFORMATION

Transcription

1 WÄRTSILÄ SLIDE BEARINGS TYPE G PRODUCT RANGE AND TECHNICAL INFORMATION

2 Wärtsilä slide bearings type G Product range and technical information Contents 1. WÄRTSILÄ G-BEARINGS MODULAR SYSTEM APPLICATIONS BEARING SIZE RANGE HEAT DISSIPATION G-BEARINGS STANDARD TYPES MAIN COMPONENTS AND FEATURES DESCRIPTION BEARING HOUSING BEARING SHELL ELECTRICAL INSULATION TEMPERATURE CONTROL OIL SELECTION OIL SUPPLY and COOLING OIL OUTLET SEALS MACHINE SEAL (GF) and PRESSURE SEAL (GM) BEARING SELECTION RADIAL LOADS AXIAL LOADS CRITERIA FOR BORE TYPE SELECTION EMPIRICAL GUIDELINE VALUES FOR THE MEAN RELATIVE BEARING CLEARANCE BEARING CLEARANCE G-BEARINGS TYPE GP Pedestal bearing size G-BEARINGS TYPE GP Pedestal bearing size SHAFT DIMENSIONS Pedestal bearing GP size SHAFT DIMENSIONS Pedestal bearing GP size G-BEARINGS TYPE GF Side flange bearing size SHAFT DIMENSIONS Side flange bearing GF size MACHINE SEALS GF G-BEARINGS TYPE GM Centre flange bearing size SHAFT DIMENSIONS Centre flange bearing GM size SEALING SYSTEMS TILTING PADS DIMENSIONS Axial bearing shell type A size

3 1. WÄRTSILÄ G-BEARINGS MODULAR SYSTEM Journal plain bearings are important components for modern high performance rotating machinery. Wärtsilä offers a complete range of state-of-the-art plain bearings to cope with the highest demands in the industry. Wärtsilä G-bearings work either fully hydrodynamic or combined hydrodynamic / hydrostatically, creating a separating film of lubricant between the shaft and bearing shell. This ensures long lifetime, high operational safety and low life cycle cost. G-Bearings are designed in a flexible modular system, allowing the assembly of project specific bearings from a wide range of standard components. Short lead times and spare parts availability can be combined with maximum flexibility to suit the individual application. Wärtsilä is able to adapt the standard components for bespoke design solutions, for example if an existing non-din bearing is replaced, or additional machining is required on the bearing to accommodate additional functions APPLICATIONS G-Bearings are successfully used in a wide range of industrial applications, for example: electrical motors electrical generators turbo generators hydro generators blowers and fans compressors water turbines 1.2. BEARING SIZE RANGE The Wärtsilä G-Bearing standard range covers pedestal bearings GP, sizes 9 71 from 900 mm shaft diameter and GM center flange / GF end flange bearings size 9 45 for shafts 560 mm. Additional sizes and types are available upon request HEAT DISSIPATION Frictional heat generated can be dissipated by radiation and natural convection. If this is not sufficient, the bearing oil sump can be cooled by a submerged water/oil heat exchanger. In cases where higher power losses are to be dissipated, an external oil supply system can be connected. The tank volume should be approximately 5 times the required oil flow per minute to allow sufficient relaxation of the oil. Highly loaded axial parts can be separately connected to an external oil supply to maximize operational safety. 3

4 2. G-BEARINGS STANDARD TYPES 1. Type GP GF GM Pedestal bearing according to DIN Side flange bearing according to DIN Centre flange bearing according to DIN Housing G Without cooling fins R With cooling fins F With cooling fins M With cooling fins 3. Heat dissipation N Natural cooling W Water cooling in oil sump Z Circulation lubrication, with external oil cooling U Circulating pump and natural cooling X Circulation lubrication, with external oil cooling for high oil throughput T Circulating pump and water cooling in oil sump 4. Type of bore and lubrication C L Y V Cylindrical bore without lubricating ring Cylindrical bore with floating lubricating ring Two-lobe bore (lemon shape) without lubricating ring Four-lobe bore without lubricating ring 5. Axial bearing Q B K J A Without sliding surfaces (no thrust faces) Plain sliding surfaces with oil grooves for small temporary loads Taper land thrust faces for both senses of rotation Taper land thrust faces for one sense of rotation Spring supported circular tilting pads Example: Pedestal bearing type GP size 28, shaft diameter, housing with cooling fins (R), prepared for circulation lubrication with external oil cooling (Z), cylindrical bore with loose oil ring lubrication (L), taper land thrust faces for both senses of rotation (K). GP.28..RZLK 4

5 3. MAIN COMPONENTS AND FEATURES DESCRIPTION 3.1. BEARING HOUSING Bearing housings are made of high quality cast iron. Standard housing material is GG30 up to size 28; from size 35 housings are produced in GGG40 to allow greater stiffness in cases of high axial load. Other housing materials such as cast steel are available upon request. Wärtsilä G-Bearing housings are of finned type to maximize the effect of heat dissipation. Larger pedestal bearings are smooth. The spherical bearing shell seat diverts both radial and axial loads evenly into the bearing housing and is designed for high load carrying capacity, making the bearings insensitive to misalignment. The greater stiffness of the housings also affects the rotor dynamic, i.e. critical speed, in a positive manner. Tapped holes for oil inlet and outlet, as well as for temperature and oil level monitoring are available on both sides of the bearing housing. All housings are prepared for 3 standard accelerometers. If required, provisions for shaft vibration measurement instruments or oil coolers can also be provided. The split design allows easy removal of the bearings with rotor in place, once seals, seal carriers and bearing shell have been removed BEARING SHELL The bearing shells are made of a high quality steel body, lined with white metal. The metallic bonding is of highest quality and continuously monitored and protocolled by ultrasonic testing. Depending on the application, different types of bearing shells are used, for example bearing shells with cylindrical, two-lobe or four-lobe bore profile. Different thrust parts are used depending on the thrust load. Q-shells are used as non-locating bearings and have no thrust faces B-shells have plain white metal shoulders with oil grooves and can serve as either nonlocating bearings, or to absorb temporary bumping loads, for example during testing K-shells use taper land thrust faces for high thrust loads in both directions J-shells use taper land thrust faces for high thrust loads as K type, but in only one direction of rotation A-shells with tilting thrust pads have maximum axial load carrying capacity. In most cases, the bearing shell can be equipped with a loose oil ring. Special bearing shell designs, according customer requirements, are available upon request ELECTRICAL INSULATION In order to prevent stray current, internally insulated bearings can be supplied. To achieve this, the spherical seating is coated with high strength synthetic material. The bearings can also be equipped with ground strap. Floating labyrinth seals type 10 (IP44) are electrically insulating. Metallic seals can be insulated by intermediate insulating layers TEMPERATURE CONTROL Provisions for radial bearing temperature measurement with standard commercially available thermo sensors are located on both sides of the housing. For bearings with high thrust loads (type A), additional thermometers for the thrust part can be added. Direct thermometers can be installed to monitor the oil sump temperature visually. 5

6 3.5. OIL SELECTION Generally, any non-alloyed brand of mineral oil can be used. The correct viscosity for each operating condition must be checked by computerized calculations. These calculation sheets can be provided on request OIL SUPPLY and COOLING Under normal circumstances, oil lubrication is achieved through a loose oil ring. In addition, an external oil circulation system can be connected. In this case, the oil ring provides an emergency oil supply during rundown in the event of failure of the circulation system. Natural lubrication: Frictional heat is dissipated from the housing by radiation and convection. The necessary oil supply to form the hydrodynamic oil film is provided by the standard loose oil ring. For marine applications, loose oil rings are equipped with an oil ring guide, which allow coping with typical inclinations during sea operation. Loose oil rings are used up to 20 m/s shaft circumferential speed, 26 m/s at overspeed conditions. Circulating pumps: In case of larger oil requirement for taper land or tilting pad thrust faces, a circulating oil pump can be used. It sucks oil from the oil sump and pumps it directly to the loaded thrust parts. If required, an additional heat exchanger in the pump circuit can be used to cool the oil. External lubrication: If friction losses increase and / or thrust parts require additional oil quantities, external lubrication is the method of choice. In bearings with a loose oil ring, the ring serves as backup in case of failure of the oil supply. G-Bearings are equipped with connections for external oil supply on both the left and right side. For larger oil demand in highly loaded thrust parts with round tilting pads, additional separate oil feeds for the thrust bearings can be used OIL OUTLET The standard oil outlet connection sizes and maximum oil quantities can be found in the following table. Connecting pipes must be installed in a minimum 15 angle and with sufficient cross section to make sure that the oil flows freely from the bearing, to avoid overfilling and subsequent leakage. Oils ISO VG (40 C) Dimensions of flange (DIN2573) Size Oil outlet l/min 32 and 46 l/min 68 and (mm) da (mm) db (mm) dc (mm) ba (mm) DN (4xM12) 16 DN (4xM12) DN (4xM12) DN (4xM12) DN (4xM16) SEALS In most cases, it is sufficient to equip slide bearings with floating labyrinth seals for protection against objects and water splashing. These labyrinth seals follow possible displacements of the shaft. They can be easily installed and removed due to their split design and accessibility. Instead of floating seals, rigid metallic seals can be used. They consist of two sets of labyrinths and are easily adjusted during assembly. With both seal types, the grade of protection achieved is IP 44. In connection with additional baffles, protection IP 55 can be reached. Special seal types can be supplied upon request (e.g. IP56). If the shaft ends in the bearing, an end cover can be mounted. An overview of the available seal types can be found on page MACHINE SEAL (GF) and PRESSURE SEAL (GM) End flange bearings GF can be equipped with an optional inside machine seal. An overview of Machine Seal range dimensions can be found on page 19. Center flange bearings GM are equipped with a standard internal split Pressure Seal. The cavity created between this seal and the bearing is connected to the outside ambient by flexible hoses. It allows pressure equalization between the seal inside the bearing and outside, to prevent leakage of oil through the seals, and pressure-build-up in the bearing. 6

7 4. BEARING SELECTION The following table will assist you initially in determining the size of the G-type bearing. In case of an order or for a concrete application it is necessary to perform a computerized calculation, in order to consider the reciprocal influence of operating parameters. The same applies if higher loads than those shown in the table are to be absorbed by the bearings RADIAL LOADS Radial load F R is considered as permanent (maximum value) and applied in a downwards direction. Load values for other directions are available upon request. Specific loads higher than 2,5 MPa, longer operation at turning speed or high start-up load may require hydrostatic lifting, please check with our application engineers AXIAL LOADS Thrust load F A is considered as permanent load applied on the different thrust surfaces. Small temporary loads are taken up by plain shoulders on the bearing shell (locating bearing; type B). Size D F R F A (N) (mm) (N) B K J A 1) ) FA (N) is the maximum axial load during operation under specific conditions. These values can vary for different working conditions. 7

8 4.3. CRITERIA FOR BORE TYPE SELECTION Bore type C Cylindrical Y Two-lobe V Four-lobe Electrical machines. fans compressors and turbines Peripheral speed U (m/s) Specific load p (N/mm 2 ) Type of radial bearing for Peripheral speed U (m/s) Gear boxes Specific load p (N/mm 2 ) 0 to 30 0,1 to 4 0 to 35 0,1 to 5 25 to 75 0,1 to 3 28 to 63 0,1 to 4 25 to 0 to 2 45 to 0 to 3 5. EMPIRICAL GUIDELINE VALUES FOR THE MEAN RELATIVE BEARING CLEARANCE The bearing clearance should preferably be 0,56 0,8 1,12 1,32 1,6 1,9 2,24 3,15 As given in DIN in which the mean relative bearing clearance are graded according to the preferred number series. The values given in the next table are general empirical guideline values for ψm, both the dependence on the circumferential speed and the diameter having been taken into account. The reason for this is the fact that for the same Sommerfeld numbers and same B/D radios, the temperature measured in the bearing increases as the diameter decreases. A selection of the bearing clearance in accordance with next table attenuates this tendency. Shaft diameter (mm) Sliding speed of shaft (m/s) 0 to 3 3 to to to to to 1,32 1,6 1,9 2,24 2,24 to 250 1,12 1,32 1,6 1,9 2, to 500 1,12 1,12 1,32 1,6 1,9 500 to 900 0,8 1,12 1,32 1,32 1,6 Empirical guideline values for the mean relative bearing clearance ψm in This table does not take into account exceptional influences such as: High shaft temperature due to thermal conduction from outside into the bearing Large elastic deformation due to the bearing load Large thermal deformation or large thermal expansion differentials between shaft and bearing Lubricants having a particularly high or particularly low viscosity 8

9 6. BEARING CLEARANCE Nominal shaft range (mm) Permissible deviations of the shaft 1) in µm for ψm in Maximum/minimum clearance between Shaft diameter and bearing bore. 2) in µm for ψm in over up to 0,56 0,8 1,12 1,32 1,6 1,9 2,24 3,15 0,56 0,8 1,12 1,32 1,6 1,9 2,24 3, ) The allowances for the shaft correspond to IT4 above the stepped lines, to IT5 between the lines and to IT6 below the line. 2) The maximum and minimum clearance correspond to IT4/H5 for the fit shaft/bearing bore above the stepped line, to IT5/H6 between the stepped lines and to IT6/H7 below the stepped line. 9

10 7. G-BEARINGS TYPE GP Pedestal bearing size 9 28 J1 Earthing devices (M12x1,5) / (M16x1,5 for size 22 and 28) J2 Temperature sensor (G½) / (G¼ for size 9) J3 Vibration sensor (M8x16) Size 9 D (H7) B 1) b1 ( 0 ) -0,25 b2 b3 b4 (T10) J4 Oil inlet J5 Oil sight glass J6 Oil outlet b5 d1 d2 d3 d4 d5 d6 d7 d8 d9 J4 J5 J6 J /90 / x 22 M6 for M16 10, G⅜ G1¼ DN32 G½ /110 / x 26 M6 for M20 10, G⅜ G1¼ DN32 G½ /0 160/ x M6 for 10,5 160 M G⅜ G1½ DN40 G½ /0 200/ x M8 for M G½ G1½ DN40 G½ / / x 46 M8 for M G¾ G2 DN50 G¾ /2/ /315/ x /355 M8 for 20,5 315 M G¾ G2½ DN65 G¾ Dimensions in mm. 1) In the case of a type A axial bearing, this dimension may slightly deviate from the value given here. 10

11 J7 Temperature sensor or connection J8 Drain J9 Oil filler J10 PT- (Ø) / (Ø11 for size 9 and 11) e1 e2 m1 m2 m3 m4 m5 (J5/J6) m6 (J5/J6) h1 h2 h3 l1 l2 l3 Weight (Kg) Oil quantity (l) Approx , ,5 22, ,5 27, Dimensions in mm

12 8. G-BEARINGS TYPE GP Pedestal bearing size J1 Earthing devices (M16x1,5) for size h to h J2 Temperature sensor (G½) J3 Vibration sensor (M8x16) J4 Oil inlet J5 Oil sight glass J6 Oil outlet Size D (H7) B 1) b1 b2 b3 b4 (T20) b5 d1/d2 d3 d4 d5 d6 d7 d8 d9 J4 J5 J6 J / / / x M10 for 20, /450 M / / / x M10 for 20, /560 M / / / x M10 for 25, /710 M / /710 16x for 25, /0 M M Dimensions in mm. 1) In the case of a type A axial bearing, this dimension may slightly deviate from the value given here. G¾ G2½ DN65 G1 G¾ G2½ DN G1 G1 G2½ DN G1 G1 G2½ DN G1 12

13 J7 Temperature sensor or conection J8 Drain J9 Oil filler J10 PT- (Ø) e1 e2 e3 m1 m2 m3 m Dimensions in mm. m5 (J5/J6) 295/ 262,5 370/ / / 460 m6 (J5/J6) h1 h2 h3 l1 l2 l3 Weight (Kg) Oil quantity (l) Approx

14 9. SHAFT DIMENSIONS Pedestal bearing GP size 9 28 Non-locating bearing Bearing shell type Q Locating bearing Bearing shell type B/K/J/A Size D 1) b5 3) b6 b b8 6 ) b9 2) (± 0,1) b10 d10 (e8)/ d13 r1 5) d11 4) d12 r2 r3 T10 T20 B, K, J A Q, B, K, J A /, ,4 90/, /90, / /, , /, /110, / /, , , /, /0, / /160, , /160, /0, / /200, , , /200, 250/225, / /250, /250, ,4 /2, /2, /315, / ,5 Relieve F4 x 0,5 DIN ,6 2,5 4 1, , , Dimensions in mm. 1) Limit deviations for shafts according to DIN and geometrical tolerances and surface roughness according to DIN ) The axial clearance may be 0,5 mm. In case that axial thrust is subject to change direction or if shock in axial direction is to be expected (marine applications, fans, ), dimension b9 may be reduced by 0,2 mm. If type B, K or J axial bearing is only needed for a trial run, b9 may be larger. 3) If type Q bearing should allow shaft axial movement (caused by thermal expansion or due to a system-specificly large axial clerance), b5 may be larger. 4) No need to provide undercut if d11 is equal to or smaller than D. 5) Undercut according to DIN 509 may be provided instead of rounding radii r1. 6) For seal type 11, 12, 21 and 22 check info at seals table on forward pages of this catalogue.

15 10. SHAFT DIMENSIONS Pedestal bearing GP size Non-locating bearing Bearing shell type Q Locating bearing Bearing shell type B/K/J/A Size D 1) b5 3) b6 b b8 6) b9 2) b11 6) b10 d10 (e8)/ d13 r1 5) r2 r3 d11 4) d12 (T20) (± 0,1) (T20) B, K, J A Q, B, K, J A /, /, /315, , /335, /355, /375, /400, / /375, /375, /400, , /425, /450, /475, /500, / /475, /475, /500, , /530, /560, /600, /630, / /600, /600, /630, , /670, /710, /750, / Relieve F4 x 0,5 DIN , Dimensions in mm. 1) Limit deviations for shafts according to DIN and geometrical tolerances and surface roughness according to DIN ) The axial clearance may be 0,6 mm. In case that axial thrust is subject to change direction or if shock in axial direction is to be expected (marine applications, fans, ), dimension b9 may be reduced by 0,3 mm. If type B, K or J axial bearing is only needed for a trial run, b9 may be larger. 3) If type Q bearing should allow shaft axial movement (caused by thermal expansion or due to a system-specificly large axial clerance), b5 may be larger. 4) No need to provide undercut if d11 is equal to or smaller than D. 5) Undercut according to DIN 509 may be provided instead of rounding radii r1. 6) For seal type 21 and 22 check info at seals table on forward pages of this catalogue. 15

16 11. G-BEARINGS TYPE GF Side flange bearing size 9 45 J1 Earthing devices (M12x1,5) / (M16x1,5 for size 22 and 45) J2 Temperature sensor (G½) / (G¼ for size 9) J3 Vibration sensor (M8x16) J4 Oil inlet J5 Oil sight glass J6 Oil outlet Size ) 45 2) D (H7) B 1) b1 ( -0,25 0 ) b2 b3 b4 b5 b6 b7 b8 d1 d2 d3 d4 d5 d6 d (T10) /90 / x M (T10) /110 /0 0 6x M (T10) /0 160/0 160/ x M (T10) /0 200/ / x M (T10) / /2 250/ x M (T10) /2 / / / x M /315 / (T20) / / / / x M / / / / (T20) / / / / x M / / Dimensions in mm. 1) In the case of a type A axial bearing, this dimension may slightly deviate from the value given here. 2) All sizes have the same fastening holes pattern except for sizes 35 and 45. d8 (h6) d9 d

17 J7 Temperature sensor or connection J8 Drain J9 Oil filler J10 PT- (Ø) (Ø11 for size 9 and 11) (Ø for size 35 and 45) d11 d12 J4 J5 J6 J7 h1 h2 l1 l2 m1 m2 m3 m4 M12 13,5 G⅜ G1¼ DN32 G½ M12 13,5 G⅜ G1¼ DN32 G½ M16 17,5 G⅜ G1½ DN40 G½ M20 22 G½ G1½ DN40 G½ M24 26 G¾ G2 DN50 G½ M30 33 G¾ G2½ DN65 G½ M36 40 G¾ G2½ DN65 G M42 48 G¾ G2½ DN G Dimensions in mm. m5 (J5/J6) m6 (J5/J6) Weight (Kg) Oil quantity (l) Approx , , ,5 22, ,5 27, / 262,5 370/

18 12. SHAFT DIMENSIONS Side flange bearing GF size 9 45 Non-locating bearing Bearing shell type Q Locating bearing Bearing shell type B/K/J/A Size D 1) b5 2) b6 b7 3) b10 6) /b13 6) d12 b8 b9 b11 b12 b d13 (e8)/ d 4) r1 5) d15 d16 d17 (±0,1) T10 T20 B,K,J A Q,B,K,J A r2 r , /50 75/ /, 90/, 110/ 120/ /90, 110/ ,5 4 1, , /50 75/ /, 110/, /110, 0/ 135/ 150/ ,5 4 1, / , ,5 60/60 85/ /, 0/, / 190/ /0, 0/ / , / , /60 85/ /160, 0/160, / 240/ /0, 225/ / , , ,5 70/70 105/ /200, 225/200, 250/ 265/ /225, 2/ / 290/ 315/ / / 250, /70 105/ /250, 2/250, / 355/ /2, 315/2, 335/ 375/ / / / / /, 315/, / 355, / 130/ /315, 355/335, / /355, 400/375, / /400, 450/ / / , / / /375, 400/375, / , / 130/ /400, 450/425, / /450, 500/475, / /500, 560/ / / Dimensions in mm. 1) Limit deviations for shafts according to DIN and geometrical tolerances and surface roughness according to DIN ) For sizes up to 28, the axial clearance may be 0,5 mm and for sizes 35 and 45, 0,6 mm. In case that axial thrust is subject to change direction or if shock in axial direction is to be expected (marine applications, fans, ), dimension b5 may be reduced by 0,2 mm for sizes up to 28 and by 0,3 mm for sizes 35 and 45. If type B or K or J axial bearing is only needed for a trial run, b5 may be larger. 3) If type Q bearing should allow shaft axial movement (caused by thermal expansion or due to a system-specificly large axial clerance), b7 may be larger. 4) No need to provide undercut if d is equal to or smaller than D. 5) Undercut according to DIN 509 may be provided instead of rounding radii r1. 6) For seal type 11, 12, 21 and 22 check info at seals table on forward pages of this catalogue. Relieve F4 x 0,5 DIN 509

19 13. MACHINE SEALS GF Size A B C D E F G H I J K L M Weight [kg] ,5 121,5 131,5 136,5 151,5 161,5 171,5 191,5 201,5 221,5 216,5 241,5 251,5 276,5 266,5 291,5 316,5 346,5 326,5 356,5 376,5 391,5 431, ,5 4, , , ,5 Dimensions in mm. Admissible negative pressure of floating labyrinth seal + machine seal with inserted PTFE oil scrappers: 250 Pa Admissible negative pressure of floating labyrinth seal + machine seal with inserted hemp packing: 0 Pa 19

20 . G-BEARINGS TYPE GM Centre flange bearing size J1 Earthing devices (M12x1,5) / (M16x1,5 for size 22 and 45) J2 Temperature sensor (G½) / (G¼ for size 9) J3 Vibration sensor (M8x16) Size ) 45 2) D (H7) B 1) b1 ( 0 ) -0,25 J4 Oil inlet J5 Oil sight glass J6 Oil outlet b2 b3 b4 b5 b6 b7 b8 d1 d2 d3 d4 d5 d6 d7 d8 d9 111,5/ x / ,5/ for 131,5 M M ,5/ / ,5/ 6x 13, ,5 M for M , ,5 /0 160/0 160/ ,5/ 6x ,5 M6 270 for M , ,5 160/0 200/ / ,5/ 8x M8 320 for M , ,5 200/ ,5/ /2 250/ ,5/ 8x ,5/ M for 2 346, M , ,5 250/2 326,5/ / / ,5/ 335/ ,5/ 8x ,5/ M8 500 for M , /315 / , / / / / x M for / /450 M / / , / / / / x M for / /560 M Dimensions in mm. 1) In the case of a type A axial bearing, this dimension may slightly deviate from the value given here. 2) All sizes have the same fastening holes pattern except for sizes 35 and 45. d10 (h6)

21 J7 Temperature sensor or connection J8 Drain J9 Oil filler J10 PT- (Ø) (Ø11 for size 9 and 11) (Ø for size 35 and 45) d11 d12 d13 d d15 d16 J4 J5 J6 J7 h1 h2 l1 l2 m1 m2 m3 m4 m5 (J5/J6) m6 (J5/J6) Weight (Kg) Oil quantity (l) Approx M6 G⅜ G1¼ DN32 G1¼ ,5 35, M6 G⅜ G1¼ DN32 G1¼ M6 G⅜ G1½ DN40 G1¼ M8 G½ G1½ DN40 G1¼ M10 G¾ G2 DN50 G1¼ M12 G¾ G2½ DN65 G1¼ M16 G¾ G2½ DN65 G M20 G¾ G2½ DN G Dimensions in mm , , / 262, /

22 15. SHAFT DIMENSIONS Centre flange bearing GM size 9 45 Non-locating bearing Bearing shell type Q Locating bearing Bearing shell type B/K/J/A Size D 1) b5 2) (±0,1) b6 b7 3) b10 6) /b13 6) d12 b8 b9 b11 b12 b d13 (e8)/d 4) r1 5) d15 d16 d17 T10 T20 B,K,J A Q,B,K,J A r2 5) r , /55 / /, 90/, /90, 110/ 110/ 120/ ,5 4 1, , /60 85/ /110, 110/, /110, 0/ 135/ 150/ ,5 4 1, / , ,5 65/65 90/ /, 0/, / 190/ /0, 0/ / , / , /65 90/ /160, 0/160, / 240/ /0, 225/ / , , ,5 75/75 110/ /200, 225/200, 250/ 265/ /225, 2/ / 290/ 315/ / 250, /90 / /250, 2/250, / 355/ /2, 315/2, 335/ 375/ /315, 355/ / / / /, 315/, / 355, / / /315, 355/335, / /355, 400/375, / /400, 450/ / / , / / /375, 400/375, / , / / /400, 450/425, / 475/450, 500/475, 475/ /500, 560/ / 530/ Dimensions in mm. 1) Limit deviations for shafts according to DIN and geometrical tolerances and surface roughness according to DIN ) For sizes up to 28, the axial clearance may be 0,5 mm and for sizes 35 and 45, 0,6 mm. In case that axial thrust is subject to change direction or if shock in axial direction is to be expected (marine applications, fans, ), dimension b5 may be reduced by 0,2 mm for sizes up to 28 and by 0,3 mm for sizes 35 and 45. If type B or K or J axial bearing is only needed for a trial run, b5 may be larger. 3) If type Q bearing should allow shaft axial movement (caused by thermal expansion or due to a system-specificly large axial clerance), b7 may be larger. 4) No need to provide undercut if d is equal to or smaller than D. 5) Undercut according to DIN 509 may be provided instead of rounding radii r1. 6) For seal type 11, 12, 21 and 22 check info at seals table on forward pages of this catalogue. Relieve F4 x 0,5 DIN

23 16. SEALING SYSTEMS Seal Type 10 (IP44) Seal type 10 consists of a floating labyrinth seal tightened by a garter spring and supported by aluminium housing. Floating labyrinth seal is made of synthetic material reinforced with fibre, which presents outstanding long-term heat resistance properties. This type of seal has the capacity of absorbing shaft radial displacements due to its floating movement in the housing. Admissible negative pressure: 50 Pa Type 10 Available for bearing sizes 9 28 Seal Type 11 (IP54) Seal type 11 consists of a floating labyrinth seal type 10 combined with a dust flinger. The function of this flinger is protecting the bearing from dust but also protecting the labyrinth seal against any negative pressure. Dust flinger is clamped to the shaft so rotates with it, preventing any particle to ingress into the bearing. The correct alignment of dust flinger is important for proper performance. Admissible negative pressure: 250 Pa Type 11 Available for bearing sizes 9 28 Seal Type 12 (IP55) Seal type 12 consists of a floating labyrinth seal type 10 combined with a bolt-on baffle. The additional baffle protects the seal against dust and water jets. IP56 level can be achieved with this seal by inserting a V-ring between baffle and labyrinth seal. This sealing system is available upon request for special applications. Admissible negative pressure: 150 Pa Type 12 Available for bearing sizes 9 28 Seal Type 20 (IP44) Seal type 20 consists of two rigid labyrinth systems, made of aluminium alloy. This seal is intended for bearings with high oil throughput. For higher degree of protection seal type 20 can be combined with a dust flinger, forming seal type 21 (IP54), or with a bolt-on baffle, forming seal type 22 (IP55). IP56 level can be achieved with seal type 22 by placing a V-ring between baffle and labyrinth seal. This sealing system is available upon request for special applications. Type 20 admissible negative pressure: Pa Type 21 (rigid labyrinth seal + dust flinger): Pa Type 22 (rigid labyrinth seal + bolt-on baffle): 200 Pa Type 20 Available for bearing sizes

24 TILTING PADS DIMENSIONS Axial bearing shell type A size 9 71 Size D (H7) Dcp Dp Z Size D (H7) Dcp Dp Z 9 * * * * * * * , , * * * * 160* , , * * 200* , * (*) Non-standard design

25 Enquiry for Wärtsilä bearings type G Wärtsilä Ibérica S A Seals & Bearings Product Company Spain Pol Industrial As Gándaras parcela 206, nave B Porriño, España Sender:... Company:... Department:... Contact:...Date:... Enquiry No:... Description Locating bearing Non-locating bearing Application description... Mode of application Installation position Type of bearing Outdoor In closed room Static Trim... List... Pedestal Side flange Centre flange Industrial Marine Dynamic Pitch... Roll... Pedestal Side flange Centre flange Quantity... unit(s)... unit(s) Bearing size pre-selection (if required) Shaft diameter Electrical insulation Earthing device Normal operation Shaft speed Sense of rotation ( minimum)...mm ( minimum)...mm Yes Yes Yes Yes...Rpm + - Radial load...kn...kn Load direction Additional dynamic load or shock load at normal operation...kn...kn Maximum admissible temperature at radial sensor... C... C Thrust load...kn...kn Additional dynamic load or shock load at normal operation...kn...kn Maximum admissible temperature at axial sensor... C... C Load at start-up (n=0 Rpm)...kN...kN Oversped/Temporary operation A Shaft speed...rpm...min Radial load...kn...kn Load direction Thrust load...kn...kn Operation at minimum speed Shaft speed Tel Fax pces@wartsila com Radial load...kn...kn Load direction Thrust load...kn...kn Shaft seals Inside seal Outside seal Inside seal Outside seal Floating labyrinth seal (IP44) Æ... Æ... Æ... Æ... with dust flinger (IP54) Æ... Æ... Æ... Æ... with bolt-on baffle (IP55) Æ... Æ... Æ... Æ... Rigid labyrinth seal (IP44) Æ... Æ... Æ... Æ... with dust flinger (IP54) Æ... Æ... Æ... Æ... with bolt-on baffle (IP55) Æ... Æ... Æ... Æ... Machine seal Æ... Æ... 25

26 Enquiry for Wärtsilä bearings type G Wärtsilä Ibérica S A Seals & Bearings Product Company Spain Pol Industrial As Gándaras parcela 206, nave B Porriño, España Tel Fax pces@wartsila com Description Locating bearing Non-locating bearing Heat dissipation Oil supply Oil viscosity Maximum admissible temperature in oil Ambient temperature Shape of bore Cylindrical bore without lubricating ring (C) Cylindrical bore with lubricating ring (L) Two-lobe bore (lemon shape) (Y) Four-lobe bore (V) With hydrostatic jacking device Thrust part Plain sliding surfaces with oil grooves (B) Taper land thrust faces for one sense of rotation (J) Taper land thrust faces for both senses of rotation (K) Spring supported tilting pads (A) Additional information Natural cooling Water cooling water inlet temperature... C Fresh/brackish water Sea water Circulating oil oil inlet temperature... C To be advised Self-lubrication with loose oil ring Circulating pump Mechanical pump (variable oil flow) Electrical pump (constant oil flow) Circulation lubrication ISO VG... required To be advised... C Design... C / Min... C / Max... C To be advised To be advised If any additional information should be taken into consideration or additional elements/features are required (such as measuring instruments, preparation for sensor positioning, external thermic influences, spare parts needs, etc.), please indicate it here:

27 We can also do: seals sterntubes and sterntube bearings line shaft bearings thrust bearings hydraulic couplings, bolts and nuts welded constructions (rudders, thruster tunnels, propeller nozzles) white metal parts repair and manufacturing (bearing shells, segments & pads) Contact us for more information Wärtsilä Ibérica S.A. Seals & Bearings Product Company Spain Pol. Industrial As Gándaras parcela 206, nave B Porriño, España Phone: Fax:

28 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. Wärtsilä is listed on the NASDAQ OMX Helsinki, Finland. WÄRTSILÄ is a registered trademark. Copyright 2015 Wärtsilä Corporation