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Nacelle lifting yoke

A nacelle lifting yoke is used for the lifting of the nacelle during its installation on the turbine tower. It may also be used during the nacelle load-in on the installation vessel. The design can widely vary.

Description of Manufacturing Process
Typically made of steal beams obtained through cutting, bending and welding. Machining, including milling, drilling, boring and grinding is required for smaller components within the yoke and for interfaces surfaces.

Description of Supply Chain
Procured from a wind energy lifting equipment specialist, which either manufactures in-house or subcontracts the fabrication to a manufacturing partner. In both cases, the manufacturer typically does not have the required CNC capability and subcontracts the machining to a CNC expert.

Scottish Opportunity
Relevance to Scottish Supply Chain: Medium

There are several nacelle lifting equipment specialists operating in the UK, such as Osbit, Certex and Enabl. When local capability exists, they tend to appoint UK manufacturers for the fabrication of the tool, which themselves could be interested in subcontracting machining to a Scotland-based CNC expert. The demand is, however, relatively low as yokes can be reused on many wind farms.

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Engineering details

Material Type: S355 or higher grade steel, phosphor bronze or other grades of low friction bearing materials, thermoplastic bearing materials
Typical Dimensions: Approximately 1.5-3 m in width, 3-8 m in length and 1-2 m in height
Typical Weight: Approximately 10-50 tonnes
Tolerances: Low tolerance
Standards on a Windfarm: DNVGL-ST-0378, DNVGL-ST-E273, NORSOK R-002, LR-CO-001 or other applicable standards for offshore lifting equipment

Commercial Value: Approximately £100,000 - £200,000 per unit
Assumptions used in volume calculations: Much of the demand can be met by equipment which already exists with only a little additional capacity created over the next 10 years
Scotland demand: Volume: Low single digits newly built over the next decade
UK demand: Volume: Low single digits newly built over the next decade
Rest of Europe demand: Volume: Low single digits newly built over the next decade

Nacelle lifting yoke

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