The AirTAC Airtac SCJ40 Standard Cylinder SCJ40X130-50S is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 50 mm range without swapping the cylinder. Ø40mm bore, 130mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ40X130-50S is a double-acting, single-rod pneumatic cylinder that puts fine stroke control at your fingertips. Its rear-cap adjusting screw provides a 50 mm adjustment range, letting you dial in the exact stroke end position without removing the cylinder or adding external hard stops. This model includes a built-in magnet, ready for CMSG/DMSG sensors to confirm piston position.
With a 40 mm bore and 16 mm rod, this cylinder delivers 628 N of push force at 0.5 MPa, making it a strong candidate for medium-duty clamping and positioning tasks. The PT1/4 port and M12x1.25 rod thread ensure straightforward plumbing and tooling attachment. Air cushioning is standard, with a 21 mm cushion length to decelerate the piston quietly at the end of its 130 mm nominal stroke.
| Model | Airtac SCJ40 Standard Cylinder SCJ40X130-50S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø40 mm |
| Nominal stroke | 130 mm |
| Stroke adjustment | Up to 50 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. |
| ×130 | Nominal (maximum) stroke length in mm. |
| -50 | 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 50 mm adjustment range allows engineers to fine-tune the end-of-stroke position during machine setup without swapping cylinders, drastically reducing commissioning time on new assembly fixtures.
Ideal for packaging lines running multiple product sizes, where the push stroke must be quickly re-adjusted for different box widths or pallet patterns by simply turning the rear screw.
In high-cycle clamping operations, the adjustable stroke can be used to take up mechanical wear on contact surfaces over time, maintaining consistent clamping force without replacing the actuator.
Choose the SCJ40X130-50S when your application requires a stroke that can be tuned in the field, such as during commissioning or for format changeovers. If you need more force, stepping up to a 50 mm bore provides 982 N of push at 0.5 MPa. For applications where the stroke is fixed and never needs adjustment, a standard SC40X130 cylinder is a more economical choice.
This cylinder is a direct replacement for an existing AirTAC SCJ40X130-50S with a magnet. Ensure the replacement matches the 40 mm bore, 130 mm nominal stroke, 50 mm adjustment range, PT port thread, and basic mounting. For strokes of this length, ensure the load is guided to prevent excessive side-loading on the rod and premature seal wear.
Adjustable-stroke checklist
At 0.5 MPa, the push force is 628 N and the pull force is 528 N. The maximum push force at the 0.9 MPa operating limit is 1130 N. As a single-rod cylinder, the push force is always greater than the pull force due to the rod area.
Yes, if you need the adjustable feature. The SCJ40X130-50S has the same bore and rod dimensions as an SC40, but its body is slightly longer to house the adjusting screw. It is not a direct dimensional drop-in if space is extremely tight, but it mounts using the same accessories.
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