TECHNICAL CAPABILITIES Workshop service capabilities by the industry’s gearbox technology expert MOVENTAS WORKSHOP SERVICE PROCESSES CONTAIN:

Repair Need Expected Turbine Lifetime Workshop Service & Replacement Gearbox Excellence Levels

BASIC

STANDARD

EXTRA LIFE LIFECYCLE

BASIC STANDARD Essential component changes and repairs Technically up to the same level EXTRALIFE Technical improvements from Moventas ExtraLife solutions applied to original designs. to return the unit back to operation. as original new gearbox.

• Repair or replacement of damaged • Repair or replacement of damaged • Repair or replacement of damaged • Clean steel to lower impurities components + new HSS & IMS bearings components + new HSS & IMS components + new HSS & IMS bearings + extend lifetime bearings • Bearings upgrade • Bearings concept modernization Bearings upgrade • • Micro geometry improvements on teeth • Planetary stage modernization • Micro geometry improvements on regrinding e.g. Integrated bearings, WEC resistance teeth regrinding • Material improvements • Case carburized ring gear by Material improvements state-of-the-art heat treatment • • Elimination of spinning bearing outer • Elimination of spinning bearing outer races • Online Condition Management System races – CMaS® BASIC Gearbox Expert Workshop Services New HSS & IMS Bearings STANDARD Essential component changes and Technically up to the same High speed shaft and intermediate shaft bearings repairs to return the unit back to Extend gearbox lifetime with innovative, proven and level as original new gearbox. operation. repaired or replaced. fit for purpose repairs. Alternatively, upgrade older • Repair or replacement of damaged Repair or replacement of damaged • components + new HSS & IMS components + new HSS & IMS gearbox configurations to correspond with the latest bearings bearings available technologies in the market. Benefit from Bearings Upgrade • Bearings upgrade our experience in gearbox research and development, material selection and manufacturing processes. Up to date concept to eliminate known failures, such • Micro geometry improvements on as bearing axial cracking and White Etching Crack teeth regrinding We understand, that the customer has irreplaceable appearance. • Material improvements knowledge of the gearbox working conditions and our service experts work with the customer to find • Elimination of spinning bearing Micro Geometry Improvements outer races the root cause of the gearbox problem, and eliminate

any future instances of it. Moventas technical Gear teeth regrinding improvements provide a Available for: capabilities and workshops will extend your gearbox more accurate tooth connection and decrease the lifetime. possibility of debris forming. Siemens GE Available for: Elimination of Spinning Bearing Outer Races Siemens Repair or Replacement of Damaged Components Moventas service solution to completely stop the GE spinning of outer bearing races. The race spinning Vestas Essential damaged components are repaired or can cause bearing bore deformations leading to Acciona replaced returning the unit back to operation. misalignment and ultimately to warping of the high Nordex speed and intermediate speed shafts as well as Senvion gearbox axels and housing. Suzlon EXTRALIFE Clean Steel Case Carburized Ring Gear Technical improvements from Gear material upgrade to Moventas Clean Steel. Internal gearing case carburization offers the strongest resistance to wear. Gear lifetime Moventas ExtraLife solutions applied Improved mechanical strength provides resistance can be doubled at planetary section, covering to original designs against tooth fracture and flank breakage with the entire gearbox design lifetime of 20 years, increased gear surface safety of 10% and gear root providing optimal running conditions for • Repair or replacement of damaged safety of 5%. bearings. components + new HSS & IMS Tight Moventas material specifications prevent bearings All wind turbine gear manufactures recognize subsurface inclusions which act as initiation points • Bearings upgrade case carburized gears as superior. Moventas for fatigue and tooth fractures. is the only wind gearbox manufacturer with • Micro geometry improvements on the technological know-how to carburize inner teeth regrinding gearings. Service brings this technology to you via ExtraLife. • Material improvements • Elimination of spinning bearing outer races Condition Management System, CMaS® • Clean steel to lower risk + extend lifetime Moventas Condition Management System (CMaS) is a state-of-the-art service installed • Bearing concept modernization on thousands of units worldwide. Minimize • Integrated planet wheel bearings, downtime and costs while maximizing the ® WEC resistant lifetime of the wind turbine drivetrain. CMaS is available for all workshop levels. • Case carburized ring gear by state-of-the-art heat treatment • See the real-time health condition of your drivetrain Online Condition Management • • Installation onsite or in workshop ® System – CMaS • 24/7 global online accessibility

Integrated Planet Wheel Bearings

Moventas Service is able to provide a larger WEC resistant and black oxidized bearing, in accordance with tight physical constraints. Available for: This is possible with the incorporation of Siemens an outer raceway into the planet wheel. GE Resulting in a larger bearing with an Vestas even load distribution, better radial load Acciona handling, and greater planet gear stability. Nordex Flexspider technology allows planet pins to Senvion compensate for deformations. As an added Suzlon benefit, there is no outer race that can spin And case-by-case inside the planet bearing. Moventas is a new energy technology expert and multi-brand service provider. Moventas’ technology strives to lower the cost of energy across the lifecycle of generation, from superior gearbox design and manufacture to extensive after sales service for most gearbox brands. Moventas is part of the Clyde Blowers.

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