The AirTAC Airtac SCJ32 Standard Cylinder SCJ32X125-30S 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. Ø32mm bore, 125mm nominal stroke, PT1/8 ports and adjustable end cushioning.
The SCJ32X125-30S is a double-acting, single-rod tie-rod cylinder that puts fine stroke tuning directly on the machine. A rear-cap adjusting screw lets you shorten the stroke end by up to 30 mm without swapping the cylinder, making it ideal for commissioning trials or format changeovers. With a 12 mm rod and PT1/8 ports, it delivers 402 N of push force at 0.5 MPa and up to 724 N at 0.9 MPa.
This model includes a built-in magnet, so CMSG/DMSG/EMSG reed or solid-state sensors clamp directly onto the barrel for reliable end-of-stroke detection. The adjustable air cushion decelerates the piston smoothly, and the 21 mm cushion length helps manage kinetic energy in fast-cycling applications. It is a genuine AirTAC unit, backed by full traceability and global availability.
| Model | Airtac SCJ32 Standard Cylinder SCJ32X125-30S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø32 mm |
| Nominal stroke | 125 mm |
| Stroke adjustment | Up to 30 mm (rear adjusting screw) |
| Acting type | Double acting (single rod) |
| Port size | PT1/8 |
| Rod thread | M10×1.25 |
| 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 1000 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 | 402 N | 346 N |
| 0.7 MPa | 563 N | — |
| Max (@1.0 MPa) | 82 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. |
|---|---|
| 32 | Bore size in mm. |
| ×125 | 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 adjust range allows technicians to dial in the exact stroke end position during machine bring-up without cutting rods or adding external hard stops, speeding up production line validation.
On packaging or sorting conveyors, the adjustable stroke end lets operators quickly reset a pusher or diverter gate for different box sizes, minimizing downtime between product runs.
In clamping or pressing fixtures, the stroke-adjust screw can be used to take up mechanical wear on tooling or seals over time, maintaining consistent contact without replacing the actuator.
Choose this 32 mm bore when your application needs up to 402 N of push force at standard plant air. If you require more force, stepping up to the 40 mm bore provides 628 N at the same pressure. For fixed-stroke applications where no field adjustment is needed, the standard SC series offers a simpler, lower-cost alternative. This SCJ32X125-30S directly replaces any AirTAC SCJ adjustable-stroke cylinder with a 32 mm bore, 125 mm nominal stroke, 30 mm adjust range, PT ports, and a magnetic piston.
Adjustable-stroke checklist
At 0.5 MPa, it delivers 402 N of push force and 345 N of pull force. The maximum push force at the 0.9 MPa operating limit is 724 N. Because it is a single-rod cylinder, the push force is always greater than the pull force due to the area occupied by the 12 mm rod.
Only if you no longer need the adjustable stroke feature. The SCJ32X125-30S has a rear adjusting screw that the fixed-stroke SC series lacks. For a direct replacement, you must match the 32 mm bore, 125 mm nominal stroke, 30 mm adjust range, PT port thread, and the magnetic piston option (-S).
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