BOLTIGHT Ltd - Hydraulic Nuts

Hydraulic Nut

A Hydraulic Nut incorporates its own internal hydraulic jack. This enables large diameter bolts to be tightened, with ease, to high and accurate pre-loads. Hydraulic Nuts are widely used in the Oil, Gas, Offshore, Mining, Conventional and Nuclear Power Generation and Heavy Engineering Industries.

BOLTIGHT Hydraulic Nuts are available in four types :-

  Shim Type (more...)
  Lower Collar Type (more...)
  Upper Collar Type A (more...) and Type B (more...)
  Rubber Filled (mechanical nut) (more...)

There are a wide range of sizes, both standard and custom built to suit the application. All hydraulic nuts are available with single or twin hydraulic connections. Any number of hydraulic nuts can be connected together for simultaneous operation.

Applications include :-

Press Tie Rods

Marine Diesel Engines

Propeller Shafts

Propellers

Pumps

Compressors

Rock Crushing Machines

Steel Rolling Mills

Advantages :-

Fast and Effortless

Even and Accurate Pre Load

Low Loss of Initial Load (Shim Type)

No Torque or Torsional Stress

No Flogging Hammers or Spanners

Self Aligning (Shim Type)

Simultaneous Operation

Long life of Internal Jack

Ideal for Confined Spaces