Post Tensioning Jack
A variety of specialised equipment is employed to ensure structural integrity and performance. Stressing jacks are pivotal, applying tension to steel tendons within concrete, enhancing its tensile strength.
Equipment (from Allen Hydraulic Engineering Ltd) like stressing pumps, strand pushers, seating jacks and onion jacks - these tools form an integral part of the post-tensioning process, contributing to the safety, durability, and longevity of concrete structures.
| Jack Code | TYPE |
CAPACITY
(kNs) SWL |
LENGTH incl.
NOSE/TAIL (mm) |
CYLINDER
Dia (D1) |
WEDGE SIZE
(mm) |
STROKE
(mm) |
MAX.
PRESSURE (Bar) |
Accessories |
|---|---|---|---|---|---|---|---|---|
| SJ-T10 | S/R | 98 | 330 | 76 | 12.7 & 15.2 | 63 | 700 | Auto-nose lock off |
| SJ-T20 | S/R | 210 | 335 | 98 | 9 (wire), 12.7 & 15.2 | 50 | 700 | Auto-nose lock off |
| SJ-T25 | D/A | 250 | 550 | 120 | 12.7 & 15.2 | 120 - 220 | 550 |
Auto-nose lock off,
safety relief-valve |
| SJ-T25B | D/A | 255 | Varies | 115 | 9 (wire), 12.7 & 15.2 | 150 - 485 | 700 |
Auto-nose lock off,
safety relief-valve & hydraulic lock-off nose |
| SJ-T30 | D/A | 300 | 525 | 125 | 32 | 200 | 700 |
Auto-nose lock off,
safety relief-valve & hydraulic lock-off nose |
| SJ-30TWIN | D/A | 300 | 560 | - | 12.7 & 15.2 | 215 | 700 |
Hydraulic lock-off nose
and twin loading cassette |
Looking for precision post-tensioning solutions?
Our Post Tensioning Jacks deliver accurate and controlled stressing performance to enhance structural strength, stability, and durability for concrete and infrastructure projects.
Explore our complete range of post-tensioning equipment, including stressing jacks, pumps, strand pushers, seating jacks, and onion jacks for safe and efficient structural reinforcement operations.

