MCAM Ertalyte® PET-P Nacelle Yawing Slide Pad

Wind Energy Ertalyte PET-P Nacelle Yawing Slide Pad Challenge Ensure smooth and silent yawing of the wind turbine nacelle over long lifetime in all possible weather conditions. Yawing Slide Bearing System allows the Wind Turbine Nacelle to head perfectly into the wind which is required for optimum Energy Generation and to prevent blade fatigue. The system supports the full weight of the turbine Nacelle Rotor and wind forces exerted in any weather condition. The system is based on a yawing ring and a number of calipers which act as a large slew bearing. The calipers hold the slide pads in position while sliding over the yawing ring. Grease is usually applied in order to reduce noise and to prevent corrosion of the metal yawing ring. Our Recommendation Ertalyte Natural PET-P NEW Ertalyte SLP Blue PET-P Ertalyte TX PET-P Sliding Pads for Wind Turbines Key Requirements Low to very low wear to minimize need for replacement during lifetime Low stick-slip so low noise Medium friction to provide some part of required break torque High creep resistance No brittle break at concentrated load in case of tilting nacelle or extreme weather conditions Typical minimum lifetime 10 years Customer Benefits H igh reliability of the yawing system due to extensive proven performance and functional test data provided Cost savings up to 20 versus roller bearing concept Cost savings through longer time between service intervals mcam.com MCAMconnect contactmcam.com Why Ertalyte PET-P Tribological Properties - Wear Rate - Unlubricated 12 8 4 Ertalyte Natural PET-P Technical support during development of application and at material specification mcam.com Distributed by 0.6 0.49 0.46 0.4 0.34 0.22 0.2 0 Ertalyte Natural PET-P Ertalyte SLP PET-P Ertalyte TX PET-P Competitor 1 PET-P Test conditions Pressure 12 Mpa 1740 PSI Sliding velocity 0.33 msec 65 ftmin Lubricated Castrol-Tribol Counter surface type 42CrMo4 EN10083 Counter surface roughness turned so grooves

in circumferential direction only to Ra 0.70.9 m Ambient temperature 23 C 73.5 F Humidity 50 RH MCAMconnect contactmcam.com All statements technical information and recommendations contained in this publication are presented in good faith and are as a rule based upon tests and such tests are believed to be reliable and practical field experience. The reader however is cautioned that Mitsubishi Chemical Advanced Materials does not guarantee the accuracy or completeness of this information and it is the customers responsibility to determine the suitability of Mitsubishi Chemical Advanced Materials products in any given application. Ertalyte is a registered trademark of the Mitsubishi Chemical Advanced Materials group of companies. Design and content created by Mitsubishi Chemical Advanced Materials and are protected by copyright law. Copyright Mitsubishi Chemical Advanced Materials. All rights reserved. MCM RE 0002 7.17.19 Lower Is Better Wear rate mkm Lower Is Better Low temperature testing TX Competitor 1 High loadErtalyte tribological testing PET-P PET-P Static Retained compression testing Counter surface roughness grinded in X direction only to Ra 0.70 0.90 m Ambient temperature 23 C 73.5 F Humidity 50 RH 0.8 0.8 0.6 0.4 0.2 0 Competitor 1 PET-P Test method A pin-on-disk ISO 7148-2-pl-A-gr-F-U4 Functional testing data really relevant to this industry such as Ertalyte SLP PET-P Ertalyte TX PET-P Tribological Properties - Wear Rate - Lubricated Test method A pin-on-disk ISO 7148-2-pl-A-dr-F4-U4 1.05 Ertalyte SLP PET-P Pressure 3 Mpa 435 PSI Sliding velocity 0.33 msec 65 ftmin Unlubricated Counter surface type C35 steel Tribological Properties - Wear Rate - Unlubricated 2 Ertalyte Natural PET-P 2 Test conditions Mitsubishi Chemical Advanced Materials Added Value 3.96 3.96 1.05 0 Ertalyte PET-P is not only proven by many functional laboratory tests but also has a 25 year track record in Wind Energy yawing systems. Driving the market of mate

rials for 14.22of the yawing by detailed knowledge molecular structure and processing techniques 14.22 Wear rate mkm Wear rate mkm Ertalyte PET-P is developed for parts in both structural and dynamic use. Due to its extremely low wear rate combined with high stiffness it is considered as one of the best materials for highly loaded slide pads. Lower Is Better Test method A pin-on-disk ISO 7148-2-pl-A-dr-F4-U4 16