WTF Series – the Wind Turbine Foundation Series

The Tentec Aero WTF series is designed for foundation bolts of wind turbines both metric and imperial up to 75,000 PSI and 150,000 PSI class.

One Pull Stretch: 25 mm (1") stroke length. The piston returns on spring force.
Larger penetration through nut: because the concrete height varies a bit more, the construction is that additional penetration is possible. Minimum remains 1 x diameter
Pierce too short: if the long stroke is precisely a disadvantage, a standard stroke can also be supplied and stretched in 2 or more steps.
Rotatable hose connection: The WTB series is equipped as standard with a rotatable hose connection so that the hose always drains optimally. This is very safe when working at 1,350 bar.
Nut run-down mechanism: a simple gear system allows the nut to be easily run down after preloading using a gearbox + hand wrench on the outside of the tensioner. This ensures consistency of the result in residual bolt load, i.e. after the oil pressure returns to zero.
Safety and reliability: The series has existed for more than 15 years and has been extensively tested in practice. All parts have a (safety) function.

Product video WTF Series – the Wind Turbine Foundation Series