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The HFG failsafe lock ring cylinders merge hydraulic power with mechanical load support safety for applications requiring sustained load holding over extended periods. Raise the load hydraulically, engage the mechanical lock ring, then release hydraulic pressure while the lock ring maintains the load.

Hi-Force Cylinders
The HFG failsafe lock ring cylinders merge hydraulic power with mechanical load support safety for applications requiring sustained load holding over extended periods. Raise the load hydraulically, engage the mechanical lock ring, then release hydraulic pressure while the lock ring maintains the load.
| Model | Capacity (tonnes) | Stroke (mm) | Oil Capacity (litres) | Cylinder Effective Area (cm2) | Weight (kg) | Tommy Bar | Quote |
|---|---|---|---|---|---|---|---|
| HFG502 | 50 | 51 | 0.36 | 71.3 | 16.2 | TTB10 | |
| HFG504 | 50 | 102 | 0.73 | 71.3 | 20.6 | TTB10 | |
| HFG506 | 50 | 150 | 1.07 | 71.3 | 25.0 | TTB10 | |
| HFG1002 | 109 | 51 | 0.76 | 153.4 | 35.0 | TTB10 | |
| HFG1004 | 109 | 100 | 1.53 | 153.4 | 50.3 | TTB10 | |
| HFG1006 | 109 | 150 | 2.3 | 153.4 | 65.4 | TTB10 | |
| HFG1502 | 152 | 51 | 1.07 | 214.3 | 78.0 | TTB10 | |
| HFG1504 | 152 | 100 | 2.14 | 214.3 | 84.0 | TTB10 | |
| HFG1506 | 152 | 150 | 3.21 | 214.3 | 89.5 | TTB10 | |
| HFG2002 | 203 | 50 | 1.42 | 285.1 | 95.4 | TTB14 | |
| HFG2006 | 203 | 152 | 4.33 | 285.1 | 137.0 | TTB14 | |
| HFG2506 | 256 | 152 | 5.5 | 366.5 | 171.0 | TTB14 | |
| HFG3006 | 326 | 150 | 6.87 | 457.7 | 228.5 | TTB14 | |
| HFG4006 | 398 | 151 | 8.44 | 559 | 308.5 | TTB14 | |
| HFG5006 | 520 | 152 | 11.1 | 729.9 | 457.0 | TTB16 | |
| HFG8006 | 809 | 152 | 17.47 | 1134.1 | 735.0 | TTB16 | |
| HFG10006 | 1012 | 152 | 21.61 | 1419.3 | 1016.0 | TTB20 |
| Model | A (mm) | B (mm) | C (mm) | D (mm) | E (mm) |
|---|---|---|---|---|---|
| HFG502 | 173 | 127 | 95 | 70 | 25 |
| HFG504 | 224 | 127 | 95 | 70 | 25 |
| HFG506 | 272 | 127 | 95 | 70 | 25 |
| HFG1002 | 189 | 185 | 140 | 115 | 27.5 |
| HFG1004 | 240 | 185 | 140 | 115 | 27.5 |
| HFG1006 | 311 | 185 | 140 | 115 | 27.5 |
| HFG1502 | 237 | 216 | 165 | 135 | 42 |
| HFG1504 | 288 | 216 | 165 | 135 | 42 |
| HFG1506 | 338 | 216 | 165 | 135 | 42 |
| HFG2002 | 261 | 254 | 190 | 135 | 50 |
| HFG2006 | 362 | 254 | 190 | 135 | 50 |
| HFG2506 | 401 | 273 | 216 | 150 | 50 |
| HFG3006 | 417 | 310 | 241 | 150 | 50 |
| HFG4006 | 459 | 360 | 267 | 180 | 70 |
| HFG5006 | 498 | 400 | 305 | 180 | 80 |
| HFG8006 | 565 | 480 | 380 | 340 | 80 |
| HFG10006 | 620 | 540 | 425 | 380 | 90 |