STS Components - Imperial

The modular design of Hi-Force STS series topside hydraulic bolt tensioners enables the user to adapt an existing STS tensioner assembly to another thread size, within the tensioner range, by purchasing individual components or a simple conversion kit. By changing the required components, Hi-Force STS bolt tensioners offer the user even greater versatility at an economical cost.

Tensioner models STS1, STS3, STS4 and STS6 are available with two different bridge sizes, hence always check whether or not the required thread change is possible within the bridge size. DO NOT mix components and make sure that all components match up. A large bridge will require the usage of a long threaded puller to ensure sufficient thread engagement, as well as a large size nut rotating socket.

The table below provides all the information to select the components, comprising of short threaded adapter, load cell, small bridge, small nut rotating socket and tommy bar, to modify your existing tensioner to suit another bolt size. Changes are only possible within the same tensioner size. It is essential that all the components or selected conversion kits have the same suffix as the target tensioner size (i.e. B1, B2 or B3).

To change from STS3-162B1 to STS3-187B1 would require conversion kit CK3-187B1 only.
To change from STS3-187B1 to STS3-200B2 would require conversion kit CK3-200B2 and bridge STS3-B2.

  • For use with STS Imperial Tensioners
  • Modular design for greater flexibility
  • Versatile cost saving option
  • Unthreaded pullers can be provided upon request for customers who prefer to customise their own non-standard threads to suit specific tensioning needs

Bolt Tensioner components Imperial Range
Complete Tensioner Individual components D & E
Model Number Bolt Thread A Load cell B Tommy bar C Bridge D Threaded puller E Rotating socket Complete conversion kit
For tensioner range STS1:
STS1-075B1 3/4" STS1-LC TTB06 STS1-B1 TP1-075B1 RS1-32B1 CK1-075B1
STS1-087B1 7/8" STS1-LC TTB06 STS1-B1 TP1-087B1 RS1-37B1 CK1-087B1
STS1-100B2 1" STS1-LC TTB06 STS1-B2 TP1-100B2 RS1-41B2 CK1-100B2
STS1-112B2 1 1/8" STS1-LC TTB06 STS1-B2 TP1-112B2 RS1-46B2 CK1-112B2
For tensioner range STS2:
STS2-125B1 1 1/4" STS2-LC TTB08 STS2-B1 TP2-125B1 RS2-51B1 CK2-125B1
STS2-137B1 1 3/8" STS2-LC TTB08 STS2-B1 TP2-137B1 RS2-56B1 CK2-137B1
STS2-150B1 1 1/2" STS2-LC TTB08 STS2-B1 TP2-150B1 RS2-60B1 CK2-150B1
For tensioner range STS3:
STS3-162B1 1 5/8" STS3-LC TTB10 STS3-B1 TP3-162B1 RS3-65B1 CK3-162B1
STS3-175B1 1 3/4" STS3-LC TTB10 STS3-B1 TP3-175B1 RS3-70B1 CK3-175B1
STS3-187B1 1 7/8" STS3-LC TTB10 STS3-B1 TP3-187B1 RS3-75B1 CK3-187B1
STS3-175B2 1 3/4" STS3-LC TTB10 STS3-B2 TP3-175B2 RS3-70B2 CK3-175B2
STS3-187B2 1 7/8" STS3-LC TTB10 STS3-B2 TP3-200B2 RS3-75B2 CK3-187B2
STS3-200B2 2" STS3-LC TTB10 STS3-B2 TP3-187B2 RS3-80B2 CK3-200B2
For tensioner range STS4:
STS4-187B1 1 7/8" STS4-LC TTB10 STS4-B1 TP4-187B1 RS4-75B1 CK4-187B1
STS4-200B1 2" STS4-LC TTB10 STS4-B1 TP4-200B1 RS4-80B1 CK4-200B1
STS4-200B2 2" STS4-LC TTB10 STS4-B2 TP4-200B2 RS4-80B2 CK4-200B2
STS4-225B2 2 1/4" STS4-LC TTB10 STS4-B2 TP4-225B2 RS4-90B2 CK4-225B2
STS4-250B2 2 1/2" STS4-LC TTB10 STS4-B2 TP4-250B2 RS4-98B2 CK4-250B2
For tensioner range STS5:
STS5-250B1 2 1/2" STS5-LC TTB14 STS5-B1 TP5-250B1 RS5-100B1 CK5-250B1
STS5-275B1 2 3/4" STS5-LC TTB14 STS5-B1 TP5-275B1 RS5-108B1 CK5-275B1
STS5-300B1 3" STS5-LC TTB14 STS5-B1 TP5-300B1 RS5-118B1 CK5-300B1
For tensioner range STS6:
STS6-300B1 3" STS6-LC TTB14 STS6-B1 TP6-300B1 RS6-118B1 CK6-300B1
STS6-325B1 3 1/4" STS6-LC TTB14 STS6-B1 TP6-325B1 RS6-127B1 CK6-325B1
STS6-350B1 3 1/2" STS6-LC TTB14 STS6-B1 TP6-350B1 RS6-137B1 CK6-350B1
STS6-375B3 3 3/4" STS6-LC TTB14 STS6-B3 TP6-375B3 RS6-146B3 CK6-375B3
STS6-400B3 4" STS6-LC TTB14 STS6-B3 TP6-400B3 RS6-156B3 CK6-400B3

Note: Remember to check bridge compatibility for STS1, STS3, STS4 and STS6 models when ordering components.