The AirTAC Airtac SCJ50 Standard Cylinder SCJ50X30-10SLB 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, 30mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ50X30-10SLB is a double-acting, single-rod pneumatic cylinder with a rear adjusting screw that provides 10 mm of field-adjustable stroke-end control. Operating at 0.5 MPa, this 50 mm bore unit delivers 982 N of push force and 825 N on the pull stroke, using a 20 mm diameter piston rod and PT1/4 ports. The built-in magnet allows direct mounting of CMSG/DMSG/EMSG sensors for electronic end-of-stroke detection.
This model is configured with an LB foot mount (F-SC50LB) for secure surface mounting, and the standard TPU seal suits ambient temperatures from -20 to +70 °C. The adjustable-stroke design lets commissioning engineers fine-tune the end position without swapping the cylinder or adding external hard stops, making it ideal for applications where the stroke length needs precise, repeatable setting during setup or format changes.
| Model | Airtac SCJ50 Standard Cylinder SCJ50X30-10SLB |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø50 mm |
| Nominal stroke | 30 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. |
| ×30 | 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 adjusting screw allows technicians to precisely dial in the final stopping position during machine commissioning, compensating for minor assembly tolerances without mechanical rework.
Used on conveyors to halt product flow, the adjustable stroke lets operators fine-tune the gate's retracted position to accommodate different package heights, with the magnet sensor confirming the gate is fully open.
In assembly jigs, the adjustable stroke end prevents over-clamping delicate parts. The 982 N push force provides a firm hold, while the sensor confirms the cylinder has reached its set clamping position.
Choose the SCJ50X30-10SLB when you need a compact 30 mm stroke with a 10 mm adjustment window and sensor-ready position feedback. If your force requirement is lower, stepping down to the SCJ40 series reduces push force to 628 N at 0.5 MPa; for higher force, the SCJ63 series offers 1559 N. This model's LB foot mount is ideal for linear applications where the cylinder body is supported from the base.
For a direct replacement, match the 50 mm bore, 30 mm nominal stroke, 10 mm adjustment range, PT port thread, LB mounting style, and the -S magnet option. If your application involves significant side loads, consider adding an external guide rail, as the 20 mm rod is not designed to support lateral forces.
Adjustable-stroke checklist
At the standard 0.5 MPa operating pressure, this 50 mm bore cylinder generates 982 N of push force and 825 N of pull force. The maximum push force at 0.9 MPa is 1767 N. This force difference is due to the single-rod design, where the rod reduces the effective piston area on the return stroke.
Yes, if you need field-adjustable stroke control. The SCJ50X30-10SLB matches the 50 mm bore and 30 mm nominal stroke of an SC50X30, but adds a 10 mm rear adjustment range. Ensure your mounting matches the LB foot style (F-SC50LB), the port thread is PT, and you require the -S magnet for sensors. The SCJ body is slightly longer than the fixed-stroke SC to accommodate the adjusting mechanism.
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