The AirTAC Airtac SCJ40 Standard Cylinder SCJ40X225-10 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. Ø40mm bore, 225mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ40X225-10 is a double-acting, single-rod pneumatic cylinder with a field-adjustable stroke end, letting you fine-tune the stopping position by up to 10 mm without swapping the unit. Its 40 mm bore delivers 628 N of push force at 0.5 MPa, making it a solid mid-range actuator for tasks that need repeatable end-point trimming.
A rear-cap adjusting screw shortens the nominal 225 mm stroke, and the 16 mm diameter piston rod provides good rigidity for moderate side loads. The cylinder body length A(SCJ) is 185 mm, and the integrated air cushion (21 mm long) decelerates the piston quietly near stroke end. Ports are PT1/4, and the rod thread is M12x1.25.
| Model | Airtac SCJ40 Standard Cylinder SCJ40X225-10 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø40 mm |
| Nominal stroke | 225 mm |
| Stroke adjustment | Up to 10 mm (rear adjusting screw) |
| Acting type | Double acting (single rod) |
| Port size | PT1/4 |
| Rod thread | M12×1.25 |
| 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 | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 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. |
|---|---|
| 40 | Bore size in mm. |
| ×225 | 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.
Fine-tune the end-stop position during machine commissioning by up to 10 mm without dismounting the cylinder, speeding up line start-up.
Adjust the stroke end to take up mechanical wear in linkages or tooling over time, maintaining consistent part placement without replacing the actuator.
Quickly shift the stop position for different product sizes on a packaging or sorting line, reducing changeover downtime with a simple screw adjustment.
Choose the SCJ40X225-10 when you need to dial in a precise stroke end during commissioning or after tooling wear. If 628 N of push at 0.5 MPa is marginal, stepping up to the 50 mm bore (SCJ50, 982 N push at 0.5 MPa) adds force while keeping the same PT1/4 port size. For a simpler, fixed-stroke solution, the standard SC40 series removes the adjuster and trims a little body length.
This model is a direct dimensional replacement for another AirTAC SCJ40 with a 225 mm nominal stroke, 10 mm adjust range, PT thread, and basic mounting. At 225 mm stroke, rod bending under side load is generally not a concern for the 16 mm rod, but for off-axis loads consider an external guide rail or a guided cylinder to protect the rod bearing.
Adjustable-stroke checklist
At 0.5 MPa, the push force is 628 N and the pull force is 528 N (the difference is due to the single 16 mm rod). At the maximum operating pressure of 1.0 MPa, theoretical push force reaches 1280 N.
Yes, if you need the 10 mm stroke-end adjustment. The SCJ40 shares the same bore, rod, and port dimensions as the SC40, but the body is slightly longer to house the rear adjusting screw. Ensure your mounting space can accommodate the 185 mm body length.
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