The AirTAC Airtac SCJ50 Standard Cylinder SCJ50X350-10S 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. Ø50mm bore, 350mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ50X350-10S is a double-acting, single-rod pneumatic cylinder with a field-adjustable stroke end, allowing a 10 mm fine-tuning range via the rear-cap screw. With a 50 mm bore, it delivers 982 N of push force at 0.5 MPa, making it a capable mid-range actuator for positioning tasks that need commissioning flexibility.
A built-in magnet (denoted by the -S suffix) lets you clamp CMSG/DMSG/EMSG sensors directly onto the tie-rod barrel for reliable end-of-stroke detection. The 20 mm diameter piston rod and PT1/4 ports are standard for this bore, and the body length A(SCJ) is 194 mm, slightly longer than a fixed-stroke SC of the same size to house the adjustment mechanism.
| Model | Airtac SCJ50 Standard Cylinder SCJ50X350-10S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø50 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 | 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. |
| ×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 position during initial machine setup without replacing the cylinder or fabricating external hard stops, saving hours of mechanical work.
The built-in magnet works with clamp-on reed or solid-state sensors to confirm the piston has reached the adjusted stroke end, providing a clean signal for press-fit, staking, or clamping sequence control.
On a 350 mm stroke pusher or diverter, the 10 mm adjuster can take up mechanical wear in tooling or gripper pads over time, maintaining consistent part placement without reprogramming the PLC.
Choose this 50 mm bore SCJ when your application requires around 982 N of push force at standard plant air pressure and you need to dial in the stroke end position on the machine. If your force demand is lower, stepping down to a 40 mm bore reduces push force to 628 N; if you need more power, the 63 mm bore provides 1559 N. For a fixed, non-adjustable stroke, the standard SC series is a simpler, cost-effective alternative. This model is a direct replacement for another AirTAC SCJ50X350-10S with a PT port, basic mount, and magnetic piston. For strokes over 300 mm, be mindful of side loading and rod buckling; if the load is not perfectly guided, add an external guide rail or consider a guided cylinder to protect the rod and seals.
Adjustable-stroke checklist
At 0.5 MPa, the push force is 982 N and the pull force is 825 N. Because this is a single-rod cylinder, the pull force is lower due to the area of the 20 mm rod. At the maximum operating pressure of 0.9 MPa, the push force reaches 1767 N.
Yes, provided the bore, mounting style, and port thread match. The SCJ50X350-10S has a 350 mm nominal stroke that can be shortened by up to 10 mm. It directly replaces another SCJ50X350-10S with a PT port and magnetic piston. Note that the body length is slightly longer than a fixed-stroke SC to accommodate the adjusting screw.
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