The AirTAC Airtac SCJ250 Standard Cylinder SCJ250X200-100S is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 100 mm range without swapping the cylinder. Ø250mm bore, 200mm nominal stroke, PT1" ports and adjustable end cushioning.
The SCJ250X200-100 is a double-acting, single-rod pneumatic cylinder with a field-adjustable stroke, delivering 24544 N of push force at 0.5 MPa. Its rear-cap adjusting screw provides up to 100 mm of stroke-end reduction, allowing precise fine-tuning without removing the cylinder from the machine. The 50 mm diameter piston rod and 40 mm cushion length contribute to robust, controlled deceleration in heavy-duty applications.
This ISO 6430 class tie-rod cylinder is built for large-scale industrial tasks, operating on filtered air from 0.15 to 1.0 MPa. The built-in magnet (suffix -S) enables direct mounting of CMSG/DMSG/EMSG sensors for electronic end-of-stroke detection. With a body length of 409 mm and a maximum standard stroke of 1500 mm, it is engineered for demanding environments where stroke adjustment is critical during commissioning or format changes.
| Model | Airtac SCJ250 Standard Cylinder SCJ250X200-100S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder (ISO 6430 class) |
| Bore size | Ø250 mm |
| Nominal stroke | 200 mm |
| Stroke adjustment | Up to 100 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. |
| -100 | 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 in large forming or stamping equipment by adjusting the stroke end with the rear screw, accommodating tooling wear or different material thicknesses without disassembly.
Set the precise open position of a heavy diverter gate or chute in mining or aggregate processing. The 100 mm adjustment range allows operators to quickly recalibrate flow paths for different material grades.
Calibrate the stroke of a high-torque valve actuator during commissioning. The adjustable stroke end ensures a perfect seal every time, compensating for linkage play and seat wear over the valve's service life.
Choose the SCJ250 when you need the highest force in the SCJ family and the flexibility to adjust the stroke end by up to 100 mm on the machine. If your application requires less force, stepping down to the 200 mm bore reduces push force to 15708 N at 0.5 MPa, offering a more compact and cost-effective solution. For applications needing a fixed, non-adjustable stroke, the standard SC series is a simpler alternative.
This model is a direct replacement for another AirTAC SCJ250X200-100 cylinder with a PT port, basic mounting, and a built-in magnet. For strokes of 300 mm or more, carefully evaluate side loads; an external guide rail or a guided cylinder is recommended to prevent rod bending and ensure long seal life.
Adjustable-stroke checklist
At the standard 0.5 MPa operating pressure, the cylinder provides 24544 N of push force and 23562 N of pull force. The maximum push force at 0.9 MPa is 44178 N. The force is not adjustable; only the stroke end position is changed by the rear screw.
A rear-cap adjusting screw lets you shorten the stroke end by up to 100 mm from the nominal 200 mm maximum. Choose this SCJ model when you need to fine-tune the piston's stopping position on the machine for tasks like commissioning, wear take-up, or format changeovers, without swapping the cylinder for a different stroke length.
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