Pull-clamp version of the popular Block Cylinders. Plunger is extended with pressure off, then retracts when pressure is applied. Compact design with many applications. Easy to mount on flat surfaces, horizontally or vertically. Excellent for pressing and assembly operations, with very high forces.
Applying fluid pressure retracts the plunger. Spring return to extended position.

Several possible mounting methods:
1) insert four socket-head cap screws from the plunger end, through the four counterbored holes parallel to the plunger;
2) insert four socket-head cap screws from the bottom end, through the four counterbored holes parallel to the plunger;
3) insert two socket-head cap screws through the two broad-side holes perpendicular to the plunger. Method 3 requires that the Block Cylinder be backed up for pressures over 2300 psi by a rectangular strip or dowel pins with a height at least 1/3 of the B dimension. 1/4" BSPP port. Do not use NPT fittings.
For high-temperature applications (212ยฐ to 300ยฐ F), with Viton seals. Viton seals have a slightly shorter service life.
| Item | Material | Heat Treat | Finish |
| Plunger | Steel | Case Hardened | - |
| Body | Steel | - | Black Oxide |
| Maximum Clamping Force (lbs) | Maximum Clamping Force (kn) | Stroke (mm) | A Width (mm) | B Depth (mm) | L Height (mm) | J Thread X Depth (mm) |
| 12900 lbs. | 57.3 kN | 12mm | 100mm | 75mm | 125mm | 3/4-10 x 30mm |