The AirTAC Airtac SCJ250 Standard Cylinder SCJ250X200-20 is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 20 mm range without swapping the cylinder. Ø250mm bore, 200mm nominal stroke, PT1" ports and adjustable end cushioning.
The SCJ250X200-20 is a heavy-duty, double-acting single-rod cylinder with a field-adjustable stroke, providing a substantial 24544 N of push force at 0.5 MPa. Its rear-cap adjusting screw allows the stroke end position to be fine-tuned by up to 20 mm, making it ideal for commissioning large-scale equipment or accommodating wear in demanding industrial settings.
This ISO 6430 class tie-rod cylinder features a 50 mm diameter piston rod, a 40 mm cushion length for smooth deceleration, and a body length of 409 mm. At the maximum operating pressure of 0.9 MPa, it delivers a powerful 44178 N of push force, suitable for the most strenuous pneumatic tasks.
| Model | Airtac SCJ250 Standard Cylinder SCJ250X200-20 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder (ISO 6430 class) |
| Bore size | Ø250 mm |
| Nominal stroke | 200 mm |
| Stroke adjustment | Up to 20 mm (rear adjusting screw) |
| Acting type | Double acting (single rod) |
| Port size | PT1" |
| Rod thread | M42×2 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 500 mm/s |
| Cushion | Adjustable, 40 mm |
| Max stroke | Up to 1500 mm |
Specifications follow the official AirTAC SCJ (adjustable-stroke) datasheet. The rear adjusting screw sets the stroke end position; force is the same as the equivalent single-rod SC bore. Confirm against the product label before installation. Thread options: PT (standard) / G.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 24544 N | 23562 N |
| 0.7 MPa | 34361 N | — |
| Max (@1.0 MPa) | 5006 kgf | |
SCJ is single-rod, so force matches the equivalent SC bore: push uses the full bore area, pull subtracts the rod area. Actual usable force is lower than theoretical due to friction and back-pressure; size with a safety margin.
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 250 | Bore size in mm. |
| ×200 | Nominal (maximum) stroke length in mm. |
| -20 | Adjustable-stroke range in mm (options 10/20/30/40/50/75/100). |
| -S | Optional built-in magnet for sensor position sensing. |
Related types: SC (single rod, fixed stroke), SCD (double rod), SCT (multi-position). SCJ mounting: Basic, FA, LB, TC, TCM1. Seals: TPU standard / H = Viton / N = NBR. Thread: blank = PT, G = G thread.
Fine-tune the final pressing depth on large assembly or forming presses during initial setup and trial runs without changing the cylinder.
Adjust the stroke end on a tensioning cylinder to compensate for belt stretch over time on long mining or aggregate conveyors.
Precisely set the end stop for a roll gap mechanism in a steel processing line, allowing for quick format changes between product batches.
For applications requiring slightly less force, the SCJ200 series offers 15708 N of push force at 0.5 MPa. If your application does not require the 20 mm stroke adjustment, the fixed-stroke SC250X200 provides a simpler, non-adjustable alternative. To ensure a correct replacement, match the 250 mm bore, 200 mm nominal stroke, 20 mm adjustment range, PT port thread, and basic mounting configuration.
Adjustable-stroke checklist
At 0.5 MPa, it provides 24544 N of push force and 23562 N of pull force. The maximum push force at the 0.9 MPa operating limit is 44178 N.
A screw on the rear cap allows you to shorten the stroke end by up to 20 mm. This mechanically limits piston travel without affecting the cylinder's bore, force output, or the nominal 200 mm stroke rating.
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