SBT Spring Return Bolt Tensioners
Hi-Force has recently added to its range of SBT spring assisted return bolt tensioners. Now available with imperial bolt sizes of 1 ¼” to 4” and metric bolt sizes of M30 to M100, the SBT range consists of 22 imperial and 26 metric models, each with a maximum working pressure of 1500 Bar.
Hi-Force’s SBT range offers all of the features of the standard STS range of bolt tensioners, however with the added feature of spring assisted return hydraulic pistons. Designed primarily for topside operation, the additional feature of spring assisted return reduces bolt tensioning cycle times considerably, as the tensioner piston automatically retracts immediately after the hydraulic pressure is released, thus removing the need to manually wind down the threaded puller.
In addition to spring assisted return feature of the tool, the SBT range is also able to offer the same versatility as the STS range, with a variety of interchangeable threaded pullers and nut rotating sockets available, either as bolt size conversion kits or individual parts. All SBT bolt tensioners are designed and manufactured with a wear coated piston, maximum stroke indicator, self-energising high pressure seals and dual quick connect couplers, for easy multiple tensioner hook up.
Suitable hydraulic pumps for the SBT range include the Hi-Force AHP-BTU air driven pump as well as the Hi-Force HPX1500BTU manually operated pump. Each pump operates at a maximum working pressure of 1500 Bar and is supplied complete with a pressure gauge and quick connect release outlet couplings for ease of use. The AHP-BTU, available in a choice of 2 models, operates from a standard 7 Bar air supply with air consumption of 28scfm, or 0.79 m3 per minute. The complete system, including an air inlet filter, regulator and lubricator unit is fitted with a robust steel frame. The HPX-BTU manually operate pump however is lightweight, compact and is independent from any required power source, making it the ideal choice for onsite tensioning applications requiring reliable hydraulic power.
The SBT range of tensioners, along with suitable hydraulic pumps, hoses and couplings are available from all Hi-Force operations as well as through the global network of authorized distributors. In addition to supply, Hi-Force is also able to offer tool rental packages as well as onsite bolting service packages.