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Multi-strand stressing jacks
TENSA M 3000 kN applied to the tendon
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TENSA M or TENSA M-PV multi-strand stressing jacks are designed for the quick and exact post-tensioning of multi-strand tendons.
Compared to the TENSA M jacks (with rear-gripping feature), the front-gripping TENSA M-PV models only require a very short projecting strand length for attachment
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TENSA M, 15.000 kN in operation |
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| max. prestressing force (kN) |
max. stressing stroke (mm) |
min. projecting strand length (mm) |
max. number of strands (0,6") |
Weight (kg) |
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TENSA M multi-strand jacks
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| 1000 |
250 |
700 |
7 |
120 |
| 1090 |
200 |
650 |
5 |
80 |
| 1500 |
250 |
650 |
9 |
195 |
| 1700 |
250 |
750 |
7 |
190 |
| 2100 |
250 |
800 |
12 |
260 |
| 3000 |
460 |
1000 |
15 |
420 |
| 4800 |
300 |
1050 |
15 |
750 |
| 6500 |
300 |
1100 |
27 |
1060 |
| 6800 |
300 |
1100 |
27 |
1185 |
| 9750 |
300 |
1200 |
37 |
1770 |
| 15000 |
500 |
1650 |
108 |
5800 |
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TENSA M-PV multi-strand jacks
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| 650 |
120 |
260 |
3 |
70 |
| 650 |
450 |
150 |
3 |
136 |
| 850 |
250 |
160 |
4 |
100 |
| 3000 |
250 |
230 |
15 |
390 |
| 4800 |
100 |
320 |
22 |
643 |
| 8600 |
300 |
500 |
61 |
2150 |
 8600 kN TENSA M-PV multi-strand stressing jacks ready for dispatch
Stay cable technology
| Depending on the method adopted, stay cables are either stressed complete using large multi-strand stressing jacks or inserted individually in stay cable ducts and stressed using lightweight single-strand stressing jacks. We supply suitable stressing jacks and strand pulling / pushing equipment for both methods. |
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The stay cables of existing bridges are adjusted using large multi-strand stressing jacks. The stress is increased or reduced by stretching the whole stay cable and tightening or loosening the anchor nuts.
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For prestressing on the construction site, we offer a wide range of accessories, which are easily transportable and are consequently flexible in use.
They include portable and wheel-mounted pump units, large strand pushing machines with pneumatic tyres, plus cable or radio controls and any more. Please contact us with your special requirements.
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Portable pump unit
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| All heavy equipments is fitted with strong lifting eyes and can thus be easily loaded by crane |
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Portable pump unit and multi-strand stressing jack for post-tensioning in mobile use. |
| Cable or radio control makes the operation of a strand pushing machine much easier. The operator does not stand at the pushing device but directly at the tendon and is thus in a much better position to monitor the insertion of the strands. Naturally, a radio controlled system also provides a valuable service in the concrete factory for pushing the strands into the mould. |
Wheel-mounted strand pushing machine which offers mobility & flexibility |
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