SM 20 cylinder
$1,006.74
SM series hydraulic cylinder, 20" stroke, EQ Systems part 1104
Replacement hydraulic cylinder for the SM series tube in tube jack with a 20" stroke. The cylinder is the working part inside the square outer tube: the outer tube, brackets and foot stay on the trailer and the cylinder is what is replaced when a jack loses pressure, leaks, or will not hold.
Specifications
| Jack series | SM series tube in tube |
|---|---|
| Stroke | 20" |
| Jack outer tube size | 5" square |
| Jack outer tube length | 28" |
| Cylinder bore | 3.5" |
| Jack capacity, each jack | 25,000 lbs |
| Fittings | Both types used |
Identifying the right cylinder
Cylinders are identified by the outer tube of the jack, not by the bracket. Jacks of the same size can carry different brackets and still take the same cylinder. Measure the square dimension of the outer tube and its length: a 5" square tube 28" long is the 20" stroke SM.
Other strokes on the same 5" outer tube: 16" stroke is part 1573, outer tube 24" long; 24" stroke is part 1407, outer tube 32" long; 30" stroke is part 1135, outer tube 38 1/4" long; 36" stroke is part 1406, outer tube 43 3/4" long; 60" stroke is part 2891, outer tube 75 7/8" long.
Check your fittings before ordering
Older cylinders were built with NPTF fittings and current production uses SAE. On an SAE fitting there are no threads exposed between the cylinder body and the hex; on an NPTF fitting the threads are exposed. This cylinder has been supplied with both types over its life. If your jack has NPTF fittings, call EQ Systems at 800-846-9659 before ordering so the correct replacement fittings go out with the cylinder.