The AirTAC Airtac SCJ250 Standard Cylinder SCJ250X1000-100S 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, 1000mm nominal stroke, PT1" ports and adjustable end cushioning.
The SCJ250X1000-100 is a large-bore, double-acting single-rod pneumatic cylinder with a field-adjustable stroke end, delivering a substantial 24544 N of push force at 0.5 MPa. Its rear-cap adjusting screw provides up to 100 mm of stroke-end reduction, allowing engineers to fine-tune the piston stop position for large-scale automation commissioning, format changes, or mechanical wear compensation without removing the cylinder.
This ISO 6430 class tie-rod cylinder features a 50 mm diameter piston rod, a 1-inch PT port, and an M42x2 rod thread for robust mechanical connections. The built-in magnet (suffix -S) enables direct mounting of CMSG/DMSG/EMSG sensors along the barrel for reliable end-of-stroke detection, while the 40 mm air cushion decelerates high-inertia loads smoothly.
| Model | Airtac SCJ250 Standard Cylinder SCJ250X1000-100S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder (ISO 6430 class) |
| Bore size | Ø250 mm |
| Nominal stroke | 1000 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. |
| ×1000 | 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 a hydraulic-style pneumatic press by adjusting the stroke end screw, accommodating variations in tooling or material stack-up without reprogramming the machine.
Adjust the cylinder's extended position to perfectly align a diverter gate with different conveyor lanes during product changeovers, using the 100 mm range to compensate for mechanical wear over time.
Set the precise gap between rollers in a steel processing line by adjusting the cylinder's stroke end, allowing operators to quickly change material thickness settings with the built-in magnet confirming position.
Select the SCJ250X1000-100 when you need the highest force in the SCJ family and the ability to dial in the stroke end precisely. If your application requires less force, stepping down to the 200 mm bore reduces push force to 15708 N at 0.5 MPa, which may better suit a lighter frame. For applications needing a fixed, non-adjustable stroke, the standard SC250 cylinder is the direct alternative, eliminating the rear adjustment mechanism.
At a 1000 mm stroke, managing side loads is critical to prevent rod bending. Use an external linear guide or consider a guided cylinder if the load is not perfectly axial. This model is a direct replacement for another AirTAC SCJ250X1000-100 with a PT port, basic mount, and magnet; ensure the 100 mm adjust range matches your machine's setup requirements.
Adjustable-stroke checklist
At 0.5 MPa, it delivers 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. The theoretical force at 1.0 MPa is 5006 kgf, but the cylinder is rated for a maximum working pressure of 1.0 MPa.
Yes, this is a direct replacement for an AirTAC SCJ250 cylinder with a 1000 mm nominal stroke, 100 mm adjust range, PT port thread, and a built-in magnet. Verify that your mounting (basic, no bracket) and the M42x2 rod thread match your existing setup. This model does not include a mounting bracket; order FA, LB, or TC/TCM1 separately if needed.
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