The AirTAC Airtac SCJ40 Standard Cylinder SCJ40X350-10S 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, 350mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The AirTAC SCJ40X350-10S is a double-acting, single-rod pneumatic cylinder with a field-adjustable stroke, providing a nominal 350 mm of travel. A rear-cap adjusting screw allows the stroke end position to be fine-tuned within a 10 mm range, making it ideal for commissioning and format changeovers without swapping the cylinder. It delivers a push force of 628 N at 0.5 MPa and features a 16 mm diameter piston rod.
This model includes a built-in magnet (-S suffix), enabling direct mounting of CMSG, DMSG, or EMSG reed and solid-state sensors along the tie-rod barrel for precise end-of-stroke detection. The cylinder uses a PT1/4 port, an M12x1.25 rod thread, and has a 21 mm air cushion for smooth deceleration. Its body length is 185 mm, and it operates within a standard temperature range of -20 to +70 °C.
| Model | Airtac SCJ40 Standard Cylinder SCJ40X350-10S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø40 mm |
| Nominal stroke | 350 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. |
| ×350 | 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 rear adjustment screw lets technicians fine-tune the end-stop during initial machine setup without removing the cylinder, saving hours of mechanical rework.
On packaging lines, quickly adjust the stroke end to accommodate different box or product sizes, eliminating the need for external hard stops when formats change.
In high-cycle clamping or pressing fixtures, the adjustable stroke can be used to take up mechanical wear on tooling or contact surfaces over time, maintaining consistent pressure.
Choose the SCJ40X350-10S when you need a mid-range force of 628 N at 0.5 MPa and the ability to dial in the stroke end point on the machine. If your application requires more force, consider stepping up to a 50 mm bore SCJ, which provides 982 N of push force at the same pressure. For a fixed, non-adjustable stroke, the standard SC series is a direct alternative, but you would lose the 10 mm of field adjustment this model offers. A direct replacement must match the 40 mm bore, 350 mm nominal stroke, 10 mm adjust range, PT1/4 ports, basic mounting, and the built-in magnet. For this 350 mm stroke, be mindful of side loads; if the rod is not guided externally, consider adding a guide rod or switching to a guided cylinder to prevent rod bending and premature seal wear.
Adjustable-stroke checklist
The push force is 628 N at 0.5 MPa and 1130 N at the maximum operating pressure of 0.9 MPa. The pull force is lower due to the single rod design, providing 528 N at 0.5 MPa.
Yes, if you need the added benefit of a field-adjustable stroke. The SCJ40X350-10S is dimensionally similar to an SC40X350 but includes a rear adjusting screw. Ensure the 10 mm adjustment range is sufficient for your process and that the mounting style (basic) and magnet option match your existing setup.
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