Hydraulic nuts were required to join the vane carrier – and GE came to PILGRIM INTERNATIONAL LTD seeking a standardized product providing high load capabilities under high temperatures (400 to 450 ˚C).
PILGRIM designed a range of Hydraulic Nuts with Collar locking feature, covering a size range M36 to M100 that remain in-situ in operation, using a specific high strength low alloy steel. GE placed their first Order from this range in January 2019. Each M48 nut (98mm OD) can apply a working load of 481kN (that’s the weight of 35 Porsche 911’s!!) and temperatures in operation may reach 400 to 450 ˚C