The AirTAC Airtac SCJ50 Standard Cylinder SCJ50X30-10 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. Ø50mm bore, 30mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ50X30-10 is a double-acting, single-rod pneumatic cylinder with a rear-cap adjusting screw that provides up to 10 mm of field-adjustable stroke-end positioning. This allows fine-tuning of the piston stop without changing the cylinder body, making it ideal for commissioning and small process adjustments. With a 50 mm bore and 20 mm rod, it delivers 982 N of push force at 0.5 MPa, suitable for a wide range of clamping and pressing tasks.
Built on a durable tie-rod construction, this model uses PT1/4 ports and includes an adjustable air cushion for smooth deceleration. The body length A is 194 mm, and the standard operating pressure ranges from 0.15 to 1.0 MPa. The 10 mm adjustment range is perfect for taking up tolerance stack-up or wear in compact automation cells.
| Model | Airtac SCJ50 Standard Cylinder SCJ50X30-10 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø50 mm |
| Nominal stroke | 30 mm |
| Stroke adjustment | Up to 10 mm (rear adjusting screw) |
| Acting type | Double acting (single rod) |
| Port size | PT1/4 |
| Rod thread | M16×1.5 |
| 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 – 800 mm/s |
| Cushion | Adjustable, 21 mm |
| Max stroke | Up to 1200 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 | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 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. |
|---|---|
| 50 | Bore size in mm. |
| ×30 | 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 adjustment screw allows technicians to fine-tune the stroke end position during initial machine setup, compensating for minor variations in tooling or workpiece placement without needing to swap the cylinder.
In high-cycle clamping fixtures, the adjustable stroke can be used to take up mechanical wear on contact surfaces over time, maintaining consistent clamping force and position without immediate replacement of wear parts.
For packaging or assembly machines handling slightly different product heights, the operator can quickly adjust the cylinder's end stop by up to 10 mm, enabling a fast changeover between small batch runs.
Select the SCJ50X30-10 when you need to dial in a precise end position on a 50 mm bore platform. If the 982 N push force at 0.5 MPa is insufficient, stepping up to the SCJ63 bore provides 1559 N, while the SCJ40 bore offers 628 N for lighter, more compact installations. For applications requiring a fixed, non-adjustable stroke, the standard SC series is a direct alternative. A direct replacement must match the 50 mm bore, 30 mm nominal stroke, 10 mm adjustment range, PT port thread, and basic mounting style.
Adjustable-stroke checklist
The theoretical push force at 0.5 MPa is 982 N, and the pull force is 825 N due to the 20 mm piston rod reducing the effective area on the return stroke. At the maximum operating pressure of 1.0 MPa, the push force reaches 1963 N.
A screw mechanism in the rear cap allows you to shorten the stroke end position by up to 10 mm from its nominal 30 mm maximum. It acts as an internal, adjustable positive stop for the piston's extension, but it does not lock the piston in place when air pressure is removed.
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