OBS Bar Stressing Jacks
Capacity 80 - 400 tonne | Stroke 100 mm
Features / Application:
- Used with high tensile threaded bars for stressing, pulling & locking
- Short strokes for lifting / aligning of segments & temporary stressing
- Long strokes for pulling & locking multiple strands of concrete structure with tension bar attached to the pulling bracket
- Customised Alloy Aluminium Bar Jacks - 60, 150, 160, 200 & 300 tonne
- Designed to suit stressing bars of reputed makes of Macalloy, VSL, Freyssinet, Dextra, Tensacciai, Dywidag, Williams & others
- Safety Pressure Relief valve in the return line
- Split Threaded nut for quick install/removal
| Capacity (tonne) | 80 | 120 | 180 | 400 |
| Capacity (kN) | 846 | 1285 | 1853 | 4082 |
| Stroke (mm) | 100 | 100 | 100 | 100 |
| Model | OBS 80-100 | OBS 120-100 | OBS 180-100 | OBS 400-100 |
| Max. bar dia. (cm2) | 32 | 40 | 50 | 75 |
| Effective area (cm2) | 130.2 | 183.6 | 285.0 | 742.2 |
| Oil Cap. (cc) | 1302 | 1840 | 2850 | 7422 |
| A- Closed height (mm) | 427 | 530 | 486 | 690 |
| B- Cylinder OD (mm) | 205 | 230 | 280 | 400 |
| C- C'hole dia. (mm) | 80 | 81 | 91 | 100 |
| D- Ram dia. (mm) | 130 | 140 | 160 | 250 |
| E- Stool dia. (mm) | 160 | 180 | 200 | 390 |
| F- Puller height (mm) | 76 | 100 | 91 | - |
| Wt (Approx.) (kg) | 70 | 97 | 151 | 433 |
- Higher capacity & customised solutions on request
- Specifications are subject to change due to continual improvement
- Capacity & Stroke specified are maximum safe limits. As a safe practice, use at 80% of the rating
Notes:
- Please specify Bar Type Thread & Diameter along with Hexagon Nut Height and A/F
- Specify if Split Nut & Stressing Bridge is required
Please contact your nearest Specialised Force Branch for more information: https://www.specialisedforce.com.au/contact