The AirTAC Airtac SCJ40 Standard Cylinder SCJ40X130-20S is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 20 mm range without swapping the cylinder. Ø40mm bore, 130mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ40X130-20S is a double-acting, single-rod pneumatic cylinder with a field-adjustable stroke end, giving you up to 20 mm of fine-tuning range via the rear-cap screw. With a 40 mm bore and 16 mm piston rod, it delivers 628 N of push force and 528 N of pull force at 0.5 MPa, making it a solid choice for mid-range positioning tasks where the stroke needs to be dialled in precisely during commissioning or changeover.
This model includes a built-in magnet, so you can directly mount CMSG/DMSG/EMSG reed or solid-state sensors on the barrel for reliable end-of-stroke detection. The body length A is 185 mm, and the cylinder uses PT1/4 ports with an M12x1.25 rod thread. It operates on filtered air from 0.15 to 1.0 MPa and features an adjustable air cushion for smooth deceleration.
| Model | Airtac SCJ40 Standard Cylinder SCJ40X130-20S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø40 mm |
| Nominal stroke | 130 mm |
| Stroke adjustment | Up to 20 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. |
| -20 | 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 20 mm rear-screw adjustment allows technicians to quickly fine-tune the stroke end position on new machinery without swapping cylinders or machining custom end-stops, speeding up line commissioning.
Ideal for packaging lines where the cylinder pushes products of varying sizes. Operators can adjust the stroke in seconds to match a new box or carton format, minimizing downtime between batches.
In clamping or pressing fixtures, the adjustable stroke can be extended slightly over time to compensate for mechanical wear on tooling or seals, maintaining consistent clamping force without replacing parts.
Choose this 40 mm bore SCJ when your load requires around 628 N of push force at standard plant pressure. If you need more force, stepping up to the SCJ50 series provides 982 N of push at 0.5 MPa. For applications where the stroke is fixed and never needs adjustment, the standard SC series is a simpler, cost-effective alternative. This SCJ40X130-20S is a direct replacement for another AirTAC SCJ adjustable-stroke cylinder of the same 40 mm bore, 130 mm nominal stroke, 20 mm adjust range, PT port thread, basic mounting, and built-in magnet.
Adjustable-stroke checklist
At 0.5 MPa, the cylinder provides 628 N of push force and 528 N of pull force. The push force is greater because the single rod reduces the effective piston area on the pull side. The maximum operating pressure is 1.0 MPa, yielding a push force of 1130 N.
A screw in the rear cap acts as an internal end-stop for the piston, allowing you to shorten the stroke end by up to 20 mm from the nominal 130 mm maximum. It does not change the cylinder's force or speed; it only sets the physical stopping point of the piston rod's extension.
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