The AirTAC Airtac SCJ250 Standard Cylinder SCJ250X350-100S 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, 350mm nominal stroke, PT1" ports and adjustable end cushioning.
The SCJ250X350-100S is a double-acting, single-rod pneumatic cylinder with a field-adjustable stroke end, providing a substantial 24544 N of push force at 0.5 MPa. Its rear-cap adjusting screw offers a 100 mm range to fine-tune the stroke end position, making it ideal for commissioning large-scale equipment or accommodating wear in heavy-duty tooling without replacing the cylinder.
This ISO 6430 class tie-rod cylinder features a 50 mm diameter piston rod, a 40 mm air cushion for smooth deceleration, and a G1" port. The integrated magnet allows direct mounting of CMSG/DMSG/EMSG sensors for reliable end-of-stroke detection. The body length A is 409 mm.
| Model | Airtac SCJ250 Standard Cylinder SCJ250X350-100S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder (ISO 6430 class) |
| Bore size | Ø250 mm |
| Nominal stroke | 350 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. |
| ×350 | 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.
The 100 mm adjustment range allows operators to precisely set the final clamp position for different die or workpiece heights in heavy hydraulic-style pneumatic press replacements, eliminating the need for custom spacer blocks.
Fine-tune the push-off or stop position for large pallets or steel plates on roller conveyors. The adjustable stroke compensates for mechanical wear in linkages, maintaining consistent placement accuracy over time.
During the commissioning of large-scale automation, the adjustable stroke lets integrators perfect the actuator's end position for a 250 mm bore cylinder, ensuring seamless interaction with other massive moving components without swapping the cylinder.
Select the SCJ250X350-100S when you need the highest force class in the SCJ range and the ability to dial in the stroke end on-site. If 24544 N of push force at 0.5 MPa is excessive, stepping down to a 200 mm bore provides 15708 N. For applications requiring a fixed, non-adjustable stroke, the standard SC series is a direct alternative. This cylinder is a direct replacement for an AirTAC SCJ250 with a 350 mm nominal stroke and 100 mm adjust range, equipped with a magnet and PT ports. At this 350 mm stroke, ensure the rod is adequately supported against side loads; an external guide rail or a guided cylinder is recommended for offset loads.
Adjustable-stroke checklist
At the maximum operating pressure of 1.0 MPa, the theoretical push force is 44178 N. At a typical plant pressure of 0.5 MPa, it provides 24544 N of push force. The pull force is lower at 23562 N at 0.5 MPa due to the 50 mm piston rod area.
The rear adjusting screw shortens the stroke end by up to 100 mm from the 350 mm nominal maximum. It is a mechanical end-stop, not a speed control. It directly replaces another AirTAC SCJ250 with a 350 mm stroke and 100 mm adjust range, matching the same bore, port, and magnet configuration.
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