Application guidelines SKF Vibracon chocks

Application guidelines SKF Vibracon chocks SKF Solution Factory Marine Services Contact e-mail address: vibracon@skf.com

Page 2 of 37 1 Executive Summary SKF Vibracon chocks are permanent, strong and re-usable mounting chocks for all types of rotating or critically aligned machinery. SKF Vibracon chocks are mechanically stiff chocks that make accurate mounting and alignment simple and quick. The SKF Vibracon chock advantages are its adjustability characteristics, reusability features and the capability to create the perfect mounting plane within minutes. This makes SKF Vibracon chock the most economical means to establish precision mounting and alignment between equipment and foundation. The SKF Vibracon chock has many configurations and material options to satisfy technical demands, in end user environments and production line costs. All SKF Vibracon chocks include the spherical top plate and mating middle section. This self-leveling configuration accommodates angular differences up to 4. In this manual SKF will inform you about all aspects of the SKF Vibracon. If you have further questions or if you need additional information, please remember that SKF Solution Factory - Marine Services is a 24/7 local organization. Do not hesitate to contact us by phone or e-mail. Contact e-mail address: vibracon@skf.com Phone number: +31 (0)180 48 38 28

Page 3 of 37 Table of content 1 EXECUTIVE SUMMARY... 2 2 MARKET... 4 3 THE APPLICATIONS... 5 3.1 Application description... 5 3.1.1 Where to use an SKF Vibracon chock?... 5 3.1.2 The need for precise and quick alignment.... 5 3.1.3 The need for quick re-alignment.... 5 3.1.4 The need to reduce unplanned failures To secure vital uptime.... 5 3.1.5 The need of compact and maintenance free designs.... 6 3.1.6 The need for global availability... 6 4 THE PROPOSAL... 7 4.1 Offer description... 7 4.2 Technical details... 7 4.2.1 SKF Vibracon (type SM)... 7 4.2.2 SKF Vibracon low profile chock (type SM LP)... 12 4.2.3 SKF spherical washer (type SMSW)... 14 4.2.4 SKF spherical washer low profile (type SMSW LP)... 16 4.2.5 Additional bottom rings... 17 4.2.6 Extended top plate... 18 4.2.7 Mounting kits... 18 4.3 Maintenance and Handling... 19 4.4 Mounting and dismounting... 23 5 UNIQUE BUYING POINTS... 25 5.1 Offer Features... 25 5.2 The Benefits... 25 5.3 Technical advantages... 25 5.4 Commercial advantages... 26 6 VARIOUS APPLICATIONS:... 27 7 DATASHEETS... 31 8 MOUNTING PROPOSAL... 35

Page 4 of 37 2 Market Industry overview The origin of the SKF Vibracon chock products can be found in a marine environment. However, the product is applied in many more industries. When components are pre-mounted on a steel base frame, a so called skid, the necessity for initial and final alignment is apparent. Also for concrete mounted components. The Vibracon does have an impressive track record. The SKF Vibracon products are known within the following markets and applications: - Compressors - Electric motors - Industrial fans - Industrial pumps - Industrial transmissions - Machine tools - Marine / Navy - Material handling - Medical and health care - Metals - Mining, mineral processing and cement - Oil and gas / Offshore - Pulp and paper - Railways - Solar energy - Traditional power - Wind energy

Page 5 of 37 3 The Applications 3.1 Application description 3.1.1 Where to use an SKF Vibracon chock? - Critical rotating equipment - Eliminate soft foot - Angular difference between machine and the mounting base - Require alignment - Short time frame, no curing time epoxy - Height adjustment - Request for re-alignment When to use an SKF Vibracon? 3.1.2 The need for precise and quick alignment. To avoid noise and vibrations it is critical to have the machinery optimal aligned. Optimal alignment works also positive on the wear and tear inside the machinery and reduces energy losses and fuel consumption. With the SKF Vibracon chock the optimal alignment can be reached so the shafts are operating in line and creates an optimal lifetime of the bearings. 3.1.3 The need for quick re-alignment. Whenever due to for example transport the alignment needs to be optimised with SKF Vibracon chocks it is very easy to correct the misalignment. This corrective activity needs to go precise, easy and fast. This to make sure the machinery is operational quickly and without a need for intensive labour. 3.1.4 The need to reduce unplanned failures To secure vital uptime. The SKF Vibracon chocks are tightened with decent forces so that the SKF Vibracon will remain in the same position during operation of the

Page 6 of 37 machinery. The SKF Vibracon chock has the features from a rigid arrangement combined with benefits to change heights after installation. 3.1.5 The need of compact and maintenance free designs. By introducing the low profile version the SKF Vibracon chock can also be used in limited chocking heights. This is also helpful in case of conversion from a grouted chocking to a re-adjustable SKF Vibracon. 3.1.6 The need for global availability The globalization trend has increased the need of high global availability. Just-in-time concepts together with multinational production and assembly put high demands of a highly available distribution chain of components. SKF just has that.

Page 7 of 37 4 The Proposal 4.1 Offer description The SKF Vibracon chock is a universal re-adjustable steel chock. Universal refers to the fact that an SKF Vibracon chock can be used instead of rigid steel chocks, shims or epoxy resin chocks. Re-adjustable refers to the possibility of aligning and re-adjusting the chock at every re-alignment event. The name Vibracon suggests that the elements can absorb vibrations like a vibration damper. It is important to realize that the SKF Vibracon chock is absolutely not a vibration damper (resilient mount). 4.2 Technical details 4.2.1 SKF Vibracon (type SM) SKF Vibracon chocks are machinery mounting chocks that can be easily and accurately adjusted. The chocks have the ability to accommodate up to a 4 angular difference between machine and the mounting base. The SKF Vibracon chock is installed within a short time-span, mainly without the need of expensive or invasive machining of the mounting base. The products self-levelling and height-adjustment features eliminate the possibility of a soft foot during the life cycle of the machinery. Soft foot resists when one or more feet of a machine differ in height from the others. The SKF Vibracon chock: Quick, Easy, Accurate. Available in Standard (CS) DIN 1.1191 / 1.0570 Stock item Stainless Steel (SS) DIN 1.4404 (AISI 316L) Stock item Alloy Steel (AS) DIN 1.7225 Stock item K-Monel 500 (KM) QQ-N-286 On request Treated (CS-TR) Stock item

Page 8 of 37 SKF washer SKF Vibracon chock Figure 1: SKF Vibracon chock photo SKF spherical washer Figure 2:SKF Vibracon chock (type SM) set up Figure 3: SKF Vibracon chock (Type SM) Besides our standard range or materials there is the option to choose for a treated SKF Vibracon chock. When SKF Vibracons are used in humid and salty climates, an additional protector might be beneficial. In these conditions we recommend to use treated elements.

Strength Page 9 of 37 Metric + SKF Vibracon Chock Heavy duty Stainless Carbon Steel Corrosion resistance Carbon steel treated + Figure 4 Vibracon type DIN 1.1191 Carbon Steel Table 1 Prodmast code Bolt hole [mm] Height [mm] Diameter [mm] SM 12 -CS 9291040012100000100 17 30 38 60 SM 16 -CS 9291040016100000100 21 35 45 80 SM 20 -CS 9291040020100000100 25 40 50 100 SM 24 -CS 9291040024100000100 31 45 57 120 SM 30 -CS 9291040030100000100 37 50 62 140 SM 36 -CS 9291040036100000100 44 55 67 160 SM 42 -CS 9291040042100000100 50 60 72 190 SM 48 -CS 9291040048100000100 60 70 85 220 SM 56 -CS 9291040056100000100 66 75 90 230 SM 64 -CS 9291040064100000100 74 80-95 250

Page 10 of 37 Vibracon type DIN 1.1191 Carbon Steel Prodmast code Bolt hole [mm] Height [mm] Diameter [mm] SM 12 CSTR 9291040012105100100 17 30 38 60 SM 16 CSTR 9291040016105100100 21 35 45 80 SM 20 CSTR 9291040020105100100 25 40 50 100 SM 24 CSTR 9291040024105100100 31 45 57 120 SM 30 CSTR 9291040030105100100 37 50 62 140 SM 36 CSTR 9291040036105100100 44 55 67 160 SM 42 CSTR 9291040042105100100 50 60 72 190 SM 48 CSTR 9291040048105100100 60 70 85 220 SM 56 CSTR 9291040056105100100 66 75 90 230 SM 64 CSTR 9291040064105100100 74 80-95 250 Table 2 Vibracon type DIN1.4404 Stainless Steel Prodmast code Bolt hole [mm] Height [mm] Diameter [mm] SM 12 -SS 9291040012110000100 17 30 38 60 SM 16 -SS 9291040016110000100 21 35 45 80 SM 20 -SS 9291040020110000100 25 40 50 100 SM 24 -SS 9291040024110000100 31 45 57 120 SM 30 -SS 9291040030110000100 37 50 62 140 SM 36 -SS 9291040036110000100 44 55 67 160 SM 42 -SS 9291040042110000100 50 60 72 190 SM 48 -SS 9291040048110000100 60 70 85 220 SM 56 -SS 9291040056110000100 66 75 90 230 SM 64 -SS 9291040064110000100 74 80-95 250 Table 3 The SKF Stainless steel Vibracon chocks are applicable in very demanding conditions, like offshore, on deck, or under water equipment.

Page 11 of 37 Imperial Vibracon type DIN1.1191 Carbon Steel Prodmast code Bolt hole [inch] Height [inch] Diameter [inch] SM 12 -CS 9291040012100000100 0.67 1.18 1.50 2.36 SM 16 -CS 9291040016100000100 0.83 1.38 1.77 3.15 SM 20 -CS 9291040020100000100 0.98 1.57 1.97 3.94 SM 24 -CS 9291040024100000100 1.22 1,77 2.24 4.72 SM 30 -CS 9291040030100000100 1.46 1.97 2.44 5.51 SM 36 -CS 9291040036100000100 1.73 2.17 2.64 6.30 SM 42 -CS 9291040042100000100 1.97 2.36 2.83 7.48 SM 48 -CS 9291040048100000100 2.36 2.76 3.35 8.66 SM 56 -CS 9291040056100000100 2.60 2.95 3.54 9.06 SM 64 -CS 9291040064100000100 2.91 3.15 3.74 9.84 Table 4 Vibracon type DIN1.1191 Carbon Steel Prodmast code Bolt hole [inch] Height [inch] Diameter [inch] SM 12 CSTR 9291040012105100100 0.67 1.18 1.50 2.36 SM 16 CSTR 9291040016105100100 0.83 1.38 1.77 3.15 SM 20 CSTR 9291040020105100100 0.98 1.57 1.97 3.94 SM 24 CSTR 9291040024105100100 1.22 1,77 2.24 4.72 SM 30 CSTR 9291040030105100100 1.46 1.97 2.44 5.51 SM 36 CSTR 9291040036105100100 1.73 2.17 2.64 6.30 SM 42 CSTR 9291040042105100100 1.97 2.36 2.83 7.48 SM 48 CSTR 9291040048105100100 2.36 2.76 3.35 8.66 SM 56 CSTR 9291040056105100100 2.60 2.95 3.54 9.06 SM 64 CSTR 9291040064105100100 2.91 3.15 3.74 9.84 Table 5 Vibracon type DIN1.4404 Stainless Steel Prodmast code Bolt hole [inch] Height [inch] Diameter [inch] SM 12 -SS 9291040012110000100 0.67 1.18 1.50 2.36 SM 16 -SS 9291040016110000100 0.83 1.38 1.77 3.15 SM 20 -SS 9291040020110000100 0.98 1.57 1.97 3.94 SM 24 -SS 9291040024110000100 1.22 1,77 2.24 4.72 SM 30 -SS 9291040030110000100 1.46 1.97 2.44 5.51 SM 36 -SS 9291040036110000100 1.73 2.17 2.64 6.30 SM 42 -SS 9291040042110000100 1.97 2.36 2.83 7.48 SM 48 -SS 9291040048110000100 2.36 2.76 3.35 8.66 SM 56 -SS 9291040056110000100 2.60 2.95 3.54 9.06 SM 64 -SS 9291040064110000100 2.91 3.15 3.74 9.84 Table 6

Page 12 of 37 4.2.2 SKF Vibracon low profile chock (type SM LP) The SKF Vibracon low profile chocks offer an economic solution for repair projects or fixed design systems where expensive milled chocks, shims or epoxy resins were applied before. The SKF Vibracon low profile chock is designed for those applications where the chock height between the foundation and component has been established by the previous design and is limited. Unlike other chocking methods the installation procedure can be realised on a tight schedule and extends the life cycle of the equipment. A variety of adjustment tools for confined installation spaces is available. Available in Alloy Steel (AS) DIN 1.7225 Stock item Stainless Steel (SS) DIN 1.4404 (AISI 316L) On request SKF washer Figure 5:SKF Vibracon chock (type SM-LP) SKF Vibracon LP Chock SKF spherical washer Figure 6: SKF Vibracon chock (type SM-LP) set up

Page 13 of 37 Figure 7: SKF Vibracon chock (Type SM LP) Metric Vibracon type DIN 1.7225 Alloy Steel Product code Bolt hole [mm] Height [mm] Diameter [mm] SM 16 LP-AS 9291040016100020100 21 20 30 80 SM 20 LP-AS 9291040020100020100 25 20 30 100 SM 24 LP-AS 9291040024100020100 31 20 30 120 SM 30 LP-AS 9291040030100020100 37 20 30 140 SM 36 LP-AS 9291040036100020100 44 30 40 160 SM 42 LP-AS 9291040042100020100 50 35 45 190 Table 7 Vibracon type DIN 1.7225 Alloy Steel table 8 Product code Bolt hole [mm] Height [mm] Diameter [mm] SM 16 LP-ASTR 9291055016125100100 21 20 30 80 SM 20 LP-ASTR 9291055020125100100 25 20 30 100 SM 24 LP-ASTR 9291055024125100100 31 20 30 120 SM 30 LP-ASTR 9291055030125100100 37 20 30 140 SM 36 LP-ASTR 9291055036125100100 44 30 40 160 SM 42 LP-ASTR 9291055042125100100 50 35 45 190 Imperial Vibracon type DIN 1.7225 Alloy Steel Product code Bolt hole [inch] Height [inch] Diameter [inch] SM 16 LP-AS 9291040016100020100 0.83 0.79 1.18 3.15 SM 20 LP-AS 9291040020100020100 0.98 0.79 1.18 3.94 SM 24 LP-AS 9291040024100020100 1.22 0.79 1.18 4.72 SM 30 LP-AS 9291040030100020100 1.46 0.79 1.18 5.51 SM 36 LP-AS 9291040036100020100 1.73 1.18 1.57 6.30 SM 42 LP-AS 9291040042100020100 1.97 1.38 1.77 7.48 Table 9 Other materials available on request. Mail to: Vibracon@skf.com

Page 14 of 37 4.2.3 SKF spherical washer (type SMSW) SKF spherical washers are designed to create an exact parallel plane between the bolt head and the face of the nut. The main advantages are: Prevent the need for spot-facing. It automatically adjusts to compensate for angular faults. Bolt tension is evenly distributed. Increased bolt stretch due to increased clamping length. Use of high-grade alloy steel gives reduces chance of failure. Eliminates bolt bending. Reduces bolt fatigue. Another major advantage of the SKF spherical washer is that it has been engineered to easily machine down its own height. Standard SKF spherical washers come in alloy steel (AS). SKF stock the standard height and low profile version. SKF spherical washer (to prevent the need for spot facing) Figure 9: SKF spherical washer (type SW) set up Figure 8 Figure 10

Page 15 of 37 Article no. Product code Metric Imperial D[mm] d[mm] D[inch] D[inch] SMSW 16 -AS 9291047016120000100 33 17 1.30 0.67 SMSW 20 -AS 9291047020120000100 42 23 1.65 0.91 SMSW 24 -AS 9291056024120000100 47 27 1.85 1.06 SMSW 27 -AS 9291056027120000100 52 30 2.05 1.18 SMSW 30 -AS 9291056030120000100 56 34 2.20 1.34 SMSW 36 -AS 9291056036120000100 67 40 2.64 1.57 SMSW 42 -AS 9291047048120000100 82 46 3.23 1.81 SMSW 48 -AS 9291047056120000100 92 52 3.62 2.05 SMSW 56 AS 9291047056120000100 102 59 4.02 2.32 SMSW 64 -AS 9291047064120000100 112 66 4.41 2.60 Table 10 Article no. Product code Metric Imperial D[mm] d[mm] D[inch] D[inch] SMSW 16 ASTR 9291047016125100100 33 17 1.30 0.67 SMSW 20 ASTR 9291047020125100100 42 23 1.65 0.91 SMSW 24 ASTR 9291047024125100100 47 27 1.85 1.06 SMSW 27 ASTR 9291047027125100100 52 30 2.05 1.18 SMSW 30 ASTR 9291047030125100100 56 34 2.20 1.34 SMSW 36 ASTR 9291047036125100100 67 40 2.64 1.57 SMSW 42 ASTR 9291047042125100100 82 46 3.23 1.81 SMSW 48 ASTR 9291047048125100100 92 52 3.62 2.05 SMSW 56 ASTR 9291047056125100100 102 59 4.02 2.32 SMSW 64 -ASTR 9291047064125100100 112 66 4.41 2.60 Table 11 The height of the SKF spherical washer is 60mm/2,36 inch for all types.

Page 16 of 37 4.2.4 SKF spherical washer low profile (type SMSW LP) Figure 11 Article no. SMSW 16 LP-AS SMSW 20 LP-AS SMSW 24 LP-AS SMSW 27 LP-AS SMSW 30 LP-AS SMSW 36 LP-AS SMSW 42 LP-AS Table 12 Metric Imperial Height (H) Product code D[mm] d[mm] D[inch] d[inch] Metric[mm] Imperial[inch] 9291056016120000100 33 17 1.30 0.67 20 0.79 9291056020120000100 42 23 1.65 0.91 22 0.87 9291047027120000100 47 27 1.85 1.06 24 0.94 9291047030120000100 52 30 2.05 1.18 26 1.02 9291047036120000100 56 34 2.20 1.34 28 1.10 9291047042120000100 67 40 2.64 1.57 30 1.18 9291056048120000100 82 46 3.23 1.81 34 1.34 Article no. SMSW 16 LP- ASTR SMSW 20 LP- ASTR SMSW 24 LP- ASTR SMSW 27 LP- ASTR SMSW 30 LP- ASTR SMSW 36 LP- ASTR SMSW 42 LP- ASTR Product code Metric Imperial Height (H) D[mm] d[mm] D[inch] d[inch] Metric[mm] Imperial[inch] 9291056016125100100 33 17 1.30 0.67 20 0.79 9291056020125100100 42 23 1.65 0.91 22 0.87 9291056024125100100 47 27 1.85 1.06 24 0.94 9291056027125100100 52 30 2.05 1.18 26 1.02 9291056030125100100 56 34 2.20 1.34 28 1.10 9291056036125100100 67 40 2.64 1.57 30 1.18 9291056042125100100 82 46 3.23 1.81 34 1.34 Table 13 Other materials and sizes are available on request. Mail to: Vibracon@skf.com

Page 17 of 37 4.2.5 Additional bottom rings It can be that the maximum element height is not sufficient to bridge the gap between the mounting surface and the bed plate of the component. Here it is possible to place an additional bottom ring in order to extend the maximum height of the SKF Vibracon original and low profile chocks. This ring will be mounted between the base plate of the chock and the top plate of the foundation. As an alternative for the additional bottom ring SKF Solution Factory - Marine Services can also provide SKF Vibracon additional bottom rings. As a rule of thumb, the height of the chocks should not exceed the diameter of the elements. For instance the maximum height of an SKF Vibracon SM30, with a diameter of 140 mm, can go up to a chock height of 140 mm; with the maximum height of the SM30 of 62 mm this means a maximum height of the Additional Bottom Ring of 78 mm. Figure 12: additional bottom ring Article code Diameter metric Diameter imperial Height (H) D[mm] d[mm] D[inch] d[inch] ABR-12 66 40 2.36 1.57 ABR-16 86 50 3.15 1.97 ABR-20 106 60 3.94 2.36 ABR-24 126 80 4.72 3.15 ABR-30 146 95 5.51 3.74 ABR-36 166 105 6.30 4.13 ABR-42 196 125 7.48 4.92 ABR-48 226 155 8.66 6.10 ABR-56 236 165 9.06 6.50 ABR-64 256 185 9.84 7.28 Table 14 To be specified by customer Material: St.52-3, C45N or 42CrMo4V. Other materials are available on request.

Page 18 of 37 4.2.6 Extended top plate It can be that the maximum element height is not sufficient to bridge the gap between the mounting surface and the bed plate of the component. Alternatively to the additional bottom ring there is also the possibility to order an extended top plate. This option is on request and applicable when clients have a preference for having 3 components. Figure 13: extended top plate 4.2.7 Mounting kits An SKF mounting kit offers the SKF Vibracon chock together with all elements needed for accurate installation. This all-in-one mounting kit may include: - SKF Vibracon elements - Additional bottom rings - SKF spherical washers - Foundation bolts - Fitting bolts - Nuts - Castle nuts (and pins) - SKF Vibracon bolt torque calculation - Plan approval certificate of the classification of your choice - Material certificates bolting material Figure 14: Mounting kit

Page 19 of 37 4.3 Maintenance and Handling A detailed video on the installation procedure of the SKF Vibracon chock is available online via www.vibracon.com. Below the steps of the installation procedure are described. Step 1 Check foundation quality a. The bottom ring area of the SKF Vibracon chock should be in full contact (100%) with the foundation surface. b. The spherical top part of the chock must have at least 75% contact with the machine foot. c. When necessary, any foundation roughness is sandblasted with a quality of Sa 2.5 minimum or machined Ra 6.3. d. The contact surface between foundation and bottom ring of the SKF Vibracon chock should be checked using the bottom ring of the element, until an evenly distributed bearing surface is reached. The minimum of this bearing surface is given by the machinery manufacturer or classification society. In all other cases, we recommend a minimum bearing surface of 75%. e. The taper between foundation and machine feet should be less than 4. f. Foundation and machine foot should be free from paint and grease. Step 2 The SKF Vibracon chocks thread and spherical layers are protected with Molykote. The chocks are ready for installation directly from the package after cleaning the surface! SKF Solution Factory - Marine Services recommends the use of: Molykote type P37 on the screw thread; Molykote type TP42 on the convex / concave mating surface.

Page 20 of 37 Step 3 Step 4 Step 5 Check if the SKF Vibracon chock is placed concentric with the bolt hole. Alignment of machine. Keep in mind while aligning the machine to add 0.10 mm (0.004 ) to the target alignment because of the fact that the SKF Vibracon chock will compress slightly at the moment the foundation bolts are secured. A feeler gauge can be used to check if the topplate is in full contact with the bottom of the machinery feet. Fine-tuning SKF Vibracon heights When executing the alignment, the SKF Vibracon assists without the need for trial and error, typical for shims. The table below will assist you to fine-tune the chock height of the SKF vibracons. Height adjustment Vibracon type Number of adjustment holes Thread Pitch 1 hole 1/2 hole [mm] [mm] [mm] SM 12 6 1 0,167 0,083 SM 16 8 1,5 0,188 0,094 SM 20 8 2 0,250 0,125 SM 24 8 2 0,250 0,125 SM 30 8 2 0,250 0,125 SM 36 8 2 0,250 0,125 SM 42 8 2 0,250 0,125 SM 48 8 3 0,375 0,188 SM 56 10 3 0,300 0,150 SM 64 10 3 0,300 0,150 SM 80 12 4 0,333 0,167 Table 15

Page 21 of 37 Step 6 Step 7 Tighten the foundation bolts. SKF Solution Factory - Marine Services recommends doing this in several steps (in line with SKF handbook). During or after tightening of the foundation bolts recheck the alignment and check for "soft foot". A "soft foot" occurs if one or more of the SKF Vibracon chocks are not carrying the same load as the other elements. The bolt tension must be checked after the test run. SKF Solution Factory - Marine Services recommends the use of SKF spherical washers in the bolt connection. If you have any questions, please contact SKF Solution Factory - Marine Services: +31-(0)180 483828

Page 22 of 37 Link to Animation: Installation SKF Vibracon chock and SKF spherical washer: http://youtu.be/fjoquch-xdo Installation SKF Vibracon low profile chock and SKF spherical washer: http://www.youtube.com/watch?v=w_9cnhupmhk Brochure: http://www.skf.com/binary/12-64540/06686_1_en-skf-vibraconbrochure.pdf

Page 23 of 37 4.4 Mounting and dismounting SKF Solution Factory Marine Services advise to use 8.8 graded bolts, yield strength > 630 N/mm², in SKF Vibracon applications. Make sure that the foundation bolt has a minimum elongation of: 0,20 mm / 0.08 inch. There are several alternatives to create enough elongation in the foundation bolt. The commonly used measures are mentioned below: Creating enough clamping length by using an extension sleeve; Figure 15: Extension Sleeve Reducing the shank diameter (contact your local dealer or SKF Solution Factory - Marine Services for a calculation of the elongation). Figure 16: Reduced Shank Diameter

Page 24 of 37 The clamping length is the total distance between bolt head and nut, this distance is equal to the sum of: o Machine foot thickness (bed plate thickness) o Final SKF Vibracon height o Foundation thickness (top plate thickness) o Extension sleeve height (alternatively the length of the SKF spherical washer) Figure 17: Clamping Length SKF Solution Factory - Marine Services recommends the use of so called SKF spherical washers, of which the final height will be determined after the alignment has been performed, to ensure 100% mating surface of bolt head and nut mating surface to prevent bending stresses in the bolt connection. Figure 18: SKF spherical washer SKF Solution Factory - Marine Services recommends using spherical washers with convex/ concave mating surfaces in steel of convex/ conical. The SKF spherical washers have the capability to optimally transfer the pretension stresses.

Page 25 of 37 5 Unique Buying Points 5.1 Offer Features A perfect fitted chock. Easy in installation without particular knowledge. Saving alignment time. Accurate alignment possible before testing, after testing and launching. Easy realignment during the life time of the component. 5.2 The Benefits The SKF Vibracon chock has many advantages compared to other products such as epoxy resin and steel shims. The key advantages are listed below: 5.3 Technical advantages SKF Vibracon chock has many configurations and material options to satisfy technical requirements, in end user environments and production line costs. Re-adjustability. Quick installation. Quick re-alignment in case of problems or warranty claims. With the SKF Vibracon chock no curing time is needed as with epoxy resin, it eliminates the trial and error alignment process characteristics for the mill and shim method and adjustability during the life cycle of the machinery.

Page 26 of 37 5.4 Commercial advantages The SKF Vibracon chock is the most economical means to establish a perfect mounting plane within minutes and will provide a repeated benefit for production or service managers. In packaged units (like generators, compressors, turbines and pump sets) the benefits are: No parallel or angular soft foot problems, even when the skid is twisted; No machining of the base frame required; No on site problems to arrange or install shims; Re-adjustable; In combination with laser alignment equipment, alignment time can be reduced by 50%; Existing chocking systems, steel chocks or epoxy resin with a height of only 20 mm, can be replaced by the SKF Vibracon low profile configuration (depending on SKF Vibracon size). Available at your local SKF distributor. Onboard vessels for chocking propulsion units and auxiliary equipment: No preparation and curing time like epoxy resin chocks; No time consuming fitting and grinding of rigid steel chocks; Chocking can be carried out when the ship is still in the dry dock, the alignment check and (if required) realignment has to be carried out after the ship has been launched; No parallel or angular soft foot problems, even if the foundation is not machined; No machining of foundation, only locally (where the elements will be fitted) machining can be done if required.

Page 27 of 37 6 Various applications: Figure 19: gearbox installed with rectangular SKF Vibracon chocks, due to limited space Figure 20: compressor standing on SKF Vibracon chocks

Page 28 of 37 Figure 21: Electro motor in industry on SKF Vibracon chocks Figure 22: pump skids

Page 29 of 37 Figure 23: Detail of bracket with SKF Vibracon to create a fixed point

Page 30 of 37 Figure 24: Overview of engine mounted on SKF Vibracon chocks on a concrete foundation. The additional delivered plate is for reducing the surface pressure. Figure 25 and 26: SKF Vibracon chocks in industry

Page 31 of 37 7 Datasheets Figure 27: Data sheet for SKF Vibracon chock

COUPLING COUPLING Page 32 of 37 SKF Solution Factory - Marine Services Nikkelstraat 7 2984 AM Ridderkerk The Netherlands Website: www.vibracon.com E-mail: vibracon@skf.com Vibracon element selection for Generator, E-motor, Pump, Compr. Coloured cells to be filled out Shipyard / Customer : Shipname / Project : New build yard + hullnumber : IMO number : Classification society : Object : Make / type : Generator Mass : (kg) Power : (kw) Revolutions : (rpm) Number of elements : (-) Foundation bolthole diameter : (mm) Fitted bolthole diameter : - (mm) Top View of generator LETTER : Total length of component : (mm) A Location first hole (seen from flexible c.) : (mm) B Pitch between other holes (on one side) : (mm) C Total width of component : (mm) D Pitch of boltholes (left to right) : (mm) E Foundation with (inside) : (mm) F Foot length : (mm) M B A C M B A C M F E D F E D Cross section of mounting detail LETTER : Top sleeve length : (mm) G Bed plate thickness : (mm) H Chock height : (mm) J G Top plate thickness : (mm) K Bottom sleeve length: (mm) L H J Remarks: K L Address information Company : Contact : Phone : Fax : E-mail : F-334 REV. 06 D.D. 12.11.2008 SKF Figure 28

COUPLING Page 33 of 37 SKF Solution Factory - Marine Services Nikkelstraat 7 2984 AM Ridderkerk The Netherlands Website: www.vibracon.com E-mail: vibracon@skf.com Vibracon element selection for Diesel, Gas, Turbine Engines Coloured cells to be filled out Engine Shipyard / Customer : Shipname / Project : New build yard + hullnumber : IMO number : Classification society : Object : Make / type : Mass : (kg) Power : (kw) Revolutions : (rpm) Number of elements : (-) Foundation bolthole diameter : (mm) Fitted bolthole diameter : (mm) Top View of engine LETTER : Total length of engine : (mm) A Location first hole (seen from flexible c.) : (mm) B Pitch between other holes (on one side) : (mm) C Total width of engine : (mm) D Pitch of boltholes (left to right) : (mm) E Foundation with (inside) : (mm) F B C A F E D Steel side chocks Stopper clearance in accordance with manufacturer instructions Cross section of mounting detail LETTER : Top sleeve length : (mm) G Bed plate thickness : (mm) H Chock height : (mm) J G Top plate thickness : (mm) K Bottom sleeve length: (mm) L H J Remarks: K L Address information Company : Contact : Phone : Fax : E-mail : F-333 REV. SKF 06 Vibracon D.D. 12.11.2008 chocks 2014-08-25 SKF Figure 29

COUPLING Page 34 of 37 SKF Solution Factory - Marine Services Nikkelstraat 7 2984 AM Ridderkerk The Netherlands Website: www.vibracon.com E-mail: vibracon@skf.com Vibracon element selection for (Marine) Gearboxes Coloured cells to be filled out Shipyard / Customer : Shipname / Project : New build yard + hullnumber : IMO number : Classification society : Object : Make / type : Gearbox Mass : (kg) Power : (kw) Revolutions : (rpm) Number of elements : (-) Foundation bolthole diameter : (mm) Fitted bolthole diameter : (mm) Reduction rate : (-) Average distance of boltholes : (mm) Dist. between centre line of shaft and top plate : (mm) Propulsion efficiency : (N/kW) (For and aft chocks capable of transmitting 3 times nominal propeller thrust must be installed) Top View of gearbox LETTER : Total length of gearbox : (mm) A Location first hole (seen from flexible c.) : (mm) B Pitch between other holes (on one side) : (mm) C Total width of gearbox : (mm) D Pitch of boltholes (left to right) : (mm) E Foundation with (inside) : (mm) F A C B F E D Cross section of mounting detail LETTER : Top sleeve length : (mm) G Bed plate thickness : (mm) H Chock height : (mm) J G Top plate thickness : (mm) K Bottom sleeve length: (mm) L H J Remarks: K L Address information Company : Contact : Phone : Fax : E-mail : F-332 SKF REV. Vibracon 06 D.D. 12.11.2008 chocks 2014-08-25 SKF Figure 30

. NUMBER : Page 35 of 37 8 Mounting proposal SKF Solution Factory - Marine Services Phone : +31 (0)180 483828 Fax : +31 (0)180 483829 vibracon@skf.com Shipyard / Customer : Shipname / Project : Classification society : C-factor Object : 5000 Make / type : Selection of Vibracon SM element Machine Mass (if engine with water +oil) : (kg) Power : (kw) Revolutions : (rpm) Foundation width (bolt distance) : (mm) Number of elements : (-) Bolthole diameter : (mm) Correction / Safety factor : (-) Figure: 29, 30 and 31 Minimum required Vibracon SM element : (-) Advised Vibracon SM element : (-) Element load (maximum) : (kn) Element load (minimum) : (kn) Machine load : (kn) Calculation of holding down bolts' torque Figure 31 Foundation bolt : Foundation bolts : (-) Material : (-) E-modul : 207000 (N/mm²) Yield stress : (N/mm²) Elongation foundation bolt : (mm) Tension per bolt : (kn) Tensile stress : (N/mm²) Utilized yield stress : (%) Von Mises stress (tensile / torsion) : (N/mm²) Utilized yield stress < 90 % : (%) Tightening torque : (Nm)

Page 36 of 37 SKF Solution Factory Marine Services Tel: +31 (0)180 483828 Fax: +31 (0)180 483829 Vibracon@skf.com Figure 32

SKF Solution Factory Marine Services Tel: +31 (0)180 483828 Fax: +31 (0)180 483829 Vibracon@skf.com Page 37 of 37 Figure 33