The AirTAC Airtac SCJ50 Standard Cylinder SCJ50X60-30 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, 60mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ50X60-30 is a double-acting, single-rod pneumatic cylinder with a field-adjustable stroke end. A rear-cap screw provides up to 30 mm of adjustment, letting you fine-tune the stroke from 30 mm to the nominal 60 mm without replacing the cylinder. It delivers 982 N of push force and 825 N of pull force at 0.5 MPa, with a 20 mm diameter piston rod and PT1/4 ports.
This genuine AirTAC tie-rod cylinder uses a 21 mm air cushion to decelerate the piston quietly at end of travel. The body length A is 194 mm, and the operating speed ranges from 30 to 800 mm/s. It is ideal for commissioning trials, format changeovers, and applications where the end position must be dialled in precisely on the machine.
| Model | Airtac SCJ50 Standard Cylinder SCJ50X60-30 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø50 mm |
| Nominal stroke | 60 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. |
| ×60 | 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.
The 30 mm adjustment range allows technicians to precisely dial in the actuator end-stop during initial machine commissioning without swapping shims or hard stops.
Quickly adapt the cylinder stroke for different product sizes on a packaging or assembly line by turning the rear adjusting screw, minimizing downtime between batches.
Fine-tune the stroke end over the cylinder's service life to compensate for tooling wear or seal compression, maintaining consistent process quality without replacing the unit.
Choose the SCJ50 when you need a mid-range force cylinder with on-machine stroke adjustability. If you require more push force, step up to the 63 mm bore SCJ63 which provides 1559 N push at 0.5 MPa. For a simpler, fixed-stroke solution without the rear adjustment screw, select a standard SC50 cylinder instead. This model is a direct replacement for any AirTAC SCJ50X60-30 with PT ports, basic mounting, and no magnet. For strokes of 300 mm or more, evaluate side-load conditions and consider adding an external guide or switching to a guided cylinder to protect the rod from bending.
Adjustable-stroke checklist
At the standard operating pressure of 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 1.0 MPa, the theoretical push force reaches 200 kgf.
A screw in the rear cap limits how far the piston can extend, shortening the stroke end by up to 30 mm. It is a mechanical end-stop adjustment, not a force or speed control. The cylinder does not lock or hold its position when air pressure is lost; for load holding, you must add an external rod brake or pilot-operated check valve.
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