The AirTAC Airtac SCJ50 Standard Cylinder SCJ50X130-30S is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 30 mm range without swapping the cylinder. Ø50mm bore, 130mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ50X130-30S is a double-acting, single-rod pneumatic cylinder that puts field-adjustable stroke control directly on the machine. Its rear-cap adjusting screw lets you shorten the stroke end by up to 30 mm, so the effective stroke is tunable from 100 mm to the nominal 130 mm without swapping the cylinder or adding external hard stops. This model includes a built-in magnet, allowing CMSG/DMSG/EMSG sensors to clamp directly onto the 50 mm bore barrel for non-contact position sensing.
With a 20 mm diameter piston rod and PT1/4 ports, the SCJ50 delivers 982 N of push force and 825 N of pull force at 0.5 MPa. At the maximum operating pressure of 0.9 MPa, push thrust reaches 1767 N. The cylinder body length A(SCJ) is 194 mm, and the adjustable air cushion provides 21 mm of deceleration at each end. It is rated for standard strokes up to 1200 mm for this bore size.
| Model | Airtac SCJ50 Standard Cylinder SCJ50X130-30S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø50 mm |
| Nominal stroke | 130 mm |
| Stroke adjustment | Up to 30 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. |
| ×130 | Nominal (maximum) stroke length in mm. |
| -30 | 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.
During machine commissioning, the 30 mm adjustment screw allows technicians to dial in the exact end-stop position for a gripper or pusher without repeatedly swapping out fixed-stroke cylinders, saving hours of setup time.
On a packaging line that runs multiple box sizes, the SCJ50X130-30S lets operators quickly adjust the stroke of a product stop or diverter gate by up to 30 mm, eliminating the need for mechanical stop rework between batches.
In a pressing or clamping station, the adjustable stroke end can be used to take up for tooling wear or material thickness variations over time, maintaining consistent clamp force without reprogramming the PLC or changing the cylinder.
Choose the SCJ50 when you need around 982 N of push force at standard plant air and value the ability to fine-tune the stroke end position during commissioning or changeovers. If your load requires more force, step up to the SCJ63 bore, which provides 1559 N of push at 0.5 MPa. For applications where the stroke never needs adjustment, the fixed-stroke SC50 series offers a simpler, more cost-effective alternative. When replacing an existing SCJ50, match the bore, the 130 mm nominal stroke, the 30 mm adjustable range, PT port thread, and the built-in magnet option.
For this 130 mm stroke length, rod deflection under side load is generally minimal, but if the application involves any off-axis force, consider adding an external linear guide or switching to a guided cylinder assembly to protect the rod bearing and seals from premature wear.
Adjustable-stroke checklist
At 0.5 MPa, the push force is 982 N and the pull force is 825 N. The pull force is lower because the 20 mm piston rod reduces the effective area on the return stroke. At the maximum operating pressure of 0.9 MPa, the push force increases to 1767 N.
Only if you do not need the adjustable stroke feature. The SCJ50X130-30S has a rear adjusting screw that allows the stroke end to be shortened by up to 30 mm. A fixed-stroke SC50 would need to be ordered at the exact required stroke and cannot be tuned in the field. For a direct replacement, match the SCJ series, 50 mm bore, 130 mm nominal stroke, 30 mm adjustment range, and the -S magnet option.
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