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STS Imperial Range

STS Range
  • Capacities from 234 to 2649 kN
  • Working pressure 1500 Bar
  • Bolt sizes from ¾" to 4"

The STS imperial bolt tensioner range is designed for topside operation in a wide variety of applications including pipeline flanges, heat exchangers, pressure vessels, compressor covers, boiler feed pumps, anchor bolts and many others. The range comprises of 26 imperial size options ranging from ¾” to 4” thread size and all models are suitable for working pressures up to 1500 Bar. Each model of hydraulic tensioning cylinder within the tensioner range can be operated with a variety of threaded pullers and nut rotating sockets ensuring that the maximum possible range of bolt sizes can be accommodated using the minimum number of hydraulic cylinders. Threaded pullers, bridges and nut rotating sockets are available as individual components

All Hi-Force hydraulic bolt tensioners are designed and manufactured to include a wear coated piston, maximum piston stroke indicator, self-energising high pressure seals, dual quick connect couplings for easy multiple tensioner connection and a user friendly operation and maintenance procedure.

  • Single acting design
  • Nitrocarburised piston
  • Maximum piston stroke indicator
  • Suitable for single or multi-tensioning applications
  • Specially designed tensioners available on request
  • User friendly operating and maintenance procedure
  • Modular design for optimum versatility
  • Dual quick connect couplings for easy connection
  • Choice of manually operated or air powered pumps available
Topside Bolt Tensioners Imperial Range

Specifications

Model No. Bolt Thread Size Threads per inch Capacity Effective area cm2 Stroke mm Weight kg Dimensions in mm
kN tonnes A B C min D E F
STS1-075B1 3/4" 10 234 23.9 15.6 10 1.7 74 28 74 90 45 51
STS1-087B1 7/8" 9 234 23.9 15.6 10 1.7 74 28 74 90 45 54
STS1-100B2 1" 8 234 23.9 15.6 10 1.7 74 30 80 98 45 61
STS1-112B2 1 1/8" 8 234 23.9 15.6 10 1.7 74 30 80 98 45 64
STS2-125B1 1 1/4" 8 457 46.6 30.5 15 3.5 102 39 103 128 54 74
STS2-137B1 1 3/8" 8 457 46.6 30.5 15 3.5 102 39 103 128 54 77
STS2-150B1 1 1/2" 8 457 46.6 30.5 15 3.5 102 39 103 128 54 80
STS3-162B1 1 5/8" 8 822 83.8 54.8 15 6.1 133 47 115 150 56 92
STS3-175B1 1 3/4" 8 822 83.8 54.8 15 6.1 133 47 115 150 56 93
STS3-175B2 1 3/4" 8 822 83.8 54.8 15 6.1 133 50 117 155 56 104
STS3-187B1 1 7/8" 8 822 83.8 54.8 15 6.1 133 47 115 150 56 97
STS3-187B2 1 7/8" 8 822 83.8 54.8 15 6.1 133 50 117 155 56 104
STS3-200B2 2" 8 822 83.8 54.8 15 6.1 133 50 117 155 56 104
STS4-187B1 1 7/8" 8 1264 128.9 84.3 15 10.6 163 50 119 149 57 104
STS4-200B1 2" 8 1264 128.9 84.3 15 10.6 163 50 119 149 57 104
STS4-200B2 2" 8 1264 128.9 84.3 15 10.6 163 62 119 149 57 106
STS4-225B2 2 1/4" 8 1264 128.9 84.3 15 10.6 163 62 135 165 57 121
STS4-250B2 2 1/2" 8 1264 128.9 84.3 15 10.6 163 62 135 165 57 127
STS5-250B1 2 1/2" 8 1833 186.9 122.2 15 16.0 193 73 145 187 60 134
STS5-275B1 2 3/4" 8 1833 186.9 122.2 15 16.0 193 73 145 187 60 140
STS5-300B1 3" 8 1833 186.9 122.2 15 16.0 193 73 145 187 60 147
STS6-300B1 3" 8 2649 270.0 176.6 15 23.5 233 84 178 216 64 161
STS6-325B1 3 1/4" 8 2649 270.0 176.6 15 23.5 233 84 178 216 64 167
STS6-350B1 3 1/2" 8 2649 270.0 176.6 15 23.5 233 84 178 216 64 172
STS6-375B3 3 3/4" 8 2649 270.0 176.6 15 23.5 233 105 205 257 64 191
STS6-400B3 4" 8 2649 270.0 176.6 15 23.5 233 105 205 257 64 196

Note: Weight is for load cell and bridge only. Total weight of complete assembly depends on size of puller and nut rotating socket selected. Tommy bars are not included. Hi-Force recommends one tommy bar for every four tensioners. 

Tommy Bar

Tensioner Range Tommy Bar
STS1 TTB06
STS2 TTB08
STS3 TTB10
STS4 TTB10
STS5 TTB14
STS6 TTB14

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