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  • FTR-Series Foundation Bolt Tensioners provide fast, accurate and easy tightening of external or internal-ring wind tower foundations.
  • Standard models are available for 75, 150 ksi and metric style Williams, Dyson and Macalloy bar types.
  • Long-stroke options accelerate process with single-pull tensioning
Unit of Measure

Bar Grade

N/A 150 ksi

Bolt Diameter

N/A 1.44 in 37 mm

Bar Size Designation

N/A 1.25

Nut A/F

N/A 2.25 inches

Maximum Pressure

N/A 16,965 psi

Hydraulic Pressure Area

N/A 8.34 in²

Load Capacity

N/A 90.8 tons


N/A 0.39 inches

Dimension A

N/A 4.37 inches

Dimension B

N/A 4.33 inches

Dimension C

N/A 1.57 inches

Dimension D

N/A 7.01 inches


N/A 18.2 lbs.

Minimum Bolt Protrusion

N/A 8.66 inches