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العربية5-Inch Bore Hydraulic Cylinder and Inch-to-Metric Bore Chart
A 5-inch bore equals 127 mm. The nearest metric bore, Ø125 mm (4.92"), has 3.1 % less piston area, so it delivers practically the same force: 22.1 US tons at 2,320 psi (160 bar).
Fenitsa builds metric FDH cylinders; the chart below maps common inch bores to the nearest metric size so you can compare force before ordering.
5" Bore: Ø125 mm Data
| Item | Value |
|---|---|
| Rod options | Ø70 mm (2.76") or Ø90 mm (3.54") |
| Rod-end thread | M48×2 |
| Push at 2,320 psi / 3,626 psi | 22.1 / 34.5 US tons |
| Pull at 2,320 psi (Ø70 rod) | 15.1 US tons |
| Push in lbf (2,320 psi) | 44,141 |
| Max. stroke | 5,000 mm (197") |
4" Bore: Ø100 mm Data
A 4-inch bore is 101.6 mm; the metric Ø100 mm (3.94") has 3.1 % less area and pushes 14.1 US tons at 2,320 psi. Rods Ø56 or Ø70 mm (2.20" / 2.76"), thread M42×2.
Inch-to-Metric Bore Chart
Force with the nearest FDH metric bore.
| Inch bore | mm | Nearest metric | Area difference | US tons @ 2,320 psi | US tons @ 3,626 psi |
|---|---|---|---|---|---|
| 2" | 50.8 | Ø50 (1.97") | -3.1 % | 3.5 | 5.5 |
| 2.5" | 63.5 | Ø63 (2.48") | -1.6 % | 5.6 | 8.8 |
| 3" | 76.2 | Ø80 (3.15") | +10.2 % | 9.0 | 14.1 |
| 3.5" | 88.9 | Ø100 (3.94") | +26.5 % | 14.1 | 22.1 |
| 4" | 101.6 | Ø100 (3.94") | -3.1 % | 14.1 | 22.1 |
| 5" | 127.0 | Ø125 (4.92") | -3.1 % | 22.1 | 34.5 |
| 6" | 152.4 | Ø160 (6.30") | +10.2 % | 36.2 | 56.5 |
| 8" | 203.2 | Ø200 (7.87") | -3.1 % | 56.5 | 88.3 |
Replacing an Inch Cylinder
- Check the force with the metric bore at your system pressure.
- Match the mounting pin diameter, closed length and stroke — these are made to your drawing.
- Port threads can differ (NPT/SAE vs metric/BSP); specify them in the order.
Frequently Asked Questions
What is a 5-inch bore in mm?
127 mm. The nearest metric hydraulic bore is Ø125 mm.
How many tons is a 5-inch hydraulic cylinder?
At 2,320 psi about 22.8 US tons; at 3,000 psi about 29.5 US tons. The metric Ø125 gives 22.1 US tons at 2,320 psi.
Can a metric cylinder replace an inch cylinder?
Yes, if the force is sufficient and the mountings, closed length and ports are matched to the original.
What rod suits a 5-inch bore?
On the metric Ø125: Ø70 mm (2.76") or Ø90 mm (3.54"); the thicker rod for long strokes.
Send Us Your Cylinder Data
Bore, rod, stroke, working pressure, mountings and quantity — or a drawing or photo of the cylinder you want to replace. Our engineers reply with a technical proposal and a quotation.
Related Pages
Hydraulic cylinder sizes
Metric bore chart
Log splitter cylinder
4" and 5" bores
Force calculator
Any bore and pressure
FDH series
Ø40–Ø200