The AirTAC Airtac SCJ250 Standard Cylinder SCJ250X200-10S is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 10 mm range without swapping the cylinder. Ø250mm bore, 200mm nominal stroke, PT1" ports and adjustable end cushioning.
The SCJ250X200-10S is a double-acting, single-rod pneumatic cylinder with a 250 mm bore, 200 mm nominal stroke, and a 10 mm adjustable stroke-end range. Its rear-cap screw allows precise, tool-free fine-tuning of the piston's end position, making it ideal for commissioning and format changeovers on heavy-duty machinery. This model delivers a substantial 24544 N of push force at 0.5 MPa and features a 50 mm diameter piston rod.
This ISO 6430 class tie-rod cylinder includes a built-in magnet (denoted by the -S suffix), enabling direct mounting of CMSG/DMSG/EMSG sensors for reliable, contactless position feedback. It operates on 40 µm filtered air at 0.15-1.0 MPa, with a proof pressure of 1.5 MPa. The standard PT port is 1 inch, and the cylinder has a 40 mm adjustable air cushion for smooth deceleration.
| Model | Airtac SCJ250 Standard Cylinder SCJ250X200-10S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder (ISO 6430 class) |
| Bore size | Ø250 mm |
| Nominal stroke | 200 mm |
| Stroke adjustment | Up to 10 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. |
| -10 | 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.
The 10 mm adjusting screw allows operators to quickly recalibrate the final pressing depth on a 250-bore press to compensate for tooling wear or different material thicknesses, without disassembling the machine.
During commissioning of large linear valves, the adjustable stroke enables precise setting of the valve's open and closed positions, ensuring a perfect seal without over-stressing the valve stem.
For a diverter gate on a mining conveyor, the SCJ250X200-10S provides the high force needed. The adjustable stroke lets technicians fine-tune the gate's end position to perfectly align with different chute openings.
Choose the SCJ250X200-10S when you need a high-force actuator with a field-adjustable stroke end. If your force requirement is lower, stepping down to a 200 mm bore (SCJ200 series) reduces push force to 15708 N at 0.5 MPa, saving space and air consumption. For applications needing a fixed, non-adjustable stroke, the standard SC series is a more economical choice.
This is a direct replacement for an existing AirTAC SCJ250X200-10S with a magnet, basic mounting, TPU seals, and PT ports. For a 200 mm stroke, ensure the rod is properly guided if significant side loads are present; an external guide rail or a guided cylinder is recommended to prevent rod bending and premature seal wear.
Adjustable-stroke checklist
At the standard 0.5 MPa operating pressure, the push force is 24544 N and the pull force is 23562 N. The maximum push force at the 0.9 MPa operating limit is 44178 N. The theoretical force at 1.0 MPa is 5006 kgf.
A screw on the rear cap mechanically limits how far the piston can retract, shortening the stroke end by up to 10 mm. It is a position adjustment, not a locking or holding brake. The cylinder will not hold its position if air pressure is lost; an external mechanical lock or pilot-operated check valve is required for load holding.
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