PowRLock - Hollow and Solid Pistons - Single Acting
A PowRlock head is small enough to hold in your hand, yet powerful enough to punch a 1/2" hole in 5/16" thick mild steel plate. Its inherent characteristics permit you to build a specialized clamping system on your machine - any machine, using existing fixtures. PowRlock is much more than a simple hydraulic cylinder. It's a concept of high holding forces engineered to be applied easily to all kinds of manufacturing processes and to give high performance and dependability. Clamping and punching pressures are available to 27,500 pounds force.

Two Types of PowRLock Heads
Hollow Piston
PowRlock hollow piston heads are the easiest and most versatile of all heads to mount. They accommodate and are mounted over any length bolt, stud, or rod which passes through the hollow piston for easiest installation. They can be installed to act in either a push or a pull motion. The exclusive patented PowRlock hollow piston head asserts forces up to 24,000 pounds.
Solid Piston
Solid piston PowRlock heads are compact and have high force capabilities. Tapped holes and threaded O.D.'s accommodate a wide variety of mountings. Available in various models, solid piston PowRlock heads apply up to 27,500 pounds of force. Solid piston PowRlock heads are ideal for operations requiring punching, clamping, locating and ejection.
| Specifications | Hollow Piston - Single Acting | |||||
| PowRlock Head Part # |
22-0180 | 22-0230 | 22-0270 | 22-0370 | (2600) 22-0460 |
22-0580 |
| Overall Length | 2.062" | 2.287" | 3.815" | 5.031" | 2.250" | 2.750" |
| Outside Cylinder Diameter |
1.625" | 3.000" | 3.500" | 2.625" | 2.500" | 2.625" |
| Effective Piston Area |
.790 sq in. | 1.976 sq in. | 4.867 sq in. | 1.980 sq in. | 1.990 sq in. | 1.976 sq in. |
| Maximum Piston Stroke* |
.375"* | .313"* | .532"* | 1.250"* | .313"* | .250"* |
| Piston Rod Diameter |
.750" | 1.500" | 2.375" | 1.500" | 1.500" | 1.375" |
| Hollow Piston Inside Diameter |
.320" | .687" | 1.010" | .685" | .687" | .755" |
| Mounting Thread |
- | 5/16"-18NC | 3/8"-16NC | - | - | 1/4"-20NC |
| Maximum Oil Pressure Rating |
10,000psi | 10,000psi | 5,000psi | 5,000psi | 10,000psi | 10,000psi |
| Force Per 1000 PSI (Lbs.) |
790 | 1976 | 4867 | 1980 | 1990 | 1976 |
| Maximum Ram Force(Lbs.) |
7900 | 19,760 | 24,335 | 9900 | 19,900 | 19,760 |
| Oil Volume Full Stroke |
.324 cu in. | .864 cu in. | 2.590 cu in. | 2.49 cu in. | .623 cu in. | .493 cu in. |
| Oil Port Diameter NPTF |
1/8" | 1/4" | 1/4" | 1/4" | 1/4" | 1/4" |
| Weight (Lbs.) | 1 | 4 | 8.5 | 5.8 | 2.5 | 3.5 |
*By removing the internal spring, stroke is approximately doubled, oil volume required also approximately doubled
**Do not allow unrestricted piston travel beyond 90% of maximum stroke
| Specifications | Solid Piston - Single Acting | ||||||
| PowRlock Head Part # |
22-0620 | 22-0360 | 22-0480 | 22-0490 | 22-0520 | 22-0550 | 22-0610 |
| Overall Length | 2.500" | 3.063" | 2.625" | 3.970" | 2.750" | 2.750" | 3.531" |
| Outside Cylinder Diameter |
1.375" | 1.500" | 1.000" | 1.125" | 2.625" | 2.625" | 1.500" |
| Effective Piston Area |
.690 sq in. | .820 sq in. | .302 sq in. | .690 sq in. | 2.761 sq in. | 2.761 sq in. | .690 sq in. |
| Maximum Piston Stroke* |
.500"* | .980"* | .500"* | 1.00"* | .750" | .250"* | .407"* |
| Piston Rod Diameter |
.625" | .500" | .375" | .625" | 1.375" | 1.375" | .625" |
| Mounting Thread | 1 1/8"- 18UNF |
- | 1"- 12UNF |
1 1/8"- 18UNEF |
3/8"- 24UNF |
3/8"- 24UNF |
1 1/2"- 16UNF |
| Maximum Oil Pressure Rating |
10,000psi | 5,000psi | 10,000psi | 10,000psi | 10,000psi | 10,000psi | 10,000psi |
| Force Per 1000psi (Lbs.) |
690 | 820 | 307 | 690 | 2761 | 2761 | 690 |
| Maximum Ram Force (Lbs.) |
6900 | 4100 | 3070 | 6900 | 27,610 | 27,610 | 6900 |
| Oil Volume Full Stroke |
.350 cu in. | .810 cu in. | .154 cu in. | .690 cu in. | 2.071 cu in. | .690 cu in. | .281 cu in. |
| Oil Port Diameter NPTF |
1/4" | 1/4" | 1/4" | 1/4" | 1/4" | 1/4" | 1/8" |
| Weight (Lbs.) | .75 | 1 | .75 | 1 | 4 | 4 | 1.75 |

