The AirTAC Airtac SCJ32 Standard Cylinder SCJ32X300-40 is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 40 mm range without swapping the cylinder. Ø32mm bore, 300mm nominal stroke, PT1/8 ports and adjustable end cushioning.
The SCJ32X300-40 is a double-acting, single-rod tie-rod cylinder with a rear adjusting screw that provides up to 40 mm of field-adjustable stroke-end control. This lets you fine-tune the piston's stopping position without swapping the cylinder or adding external hard stops, making it ideal for commissioning trials and format changeovers on compact machinery. The 32 mm bore delivers 402 N of push force at 0.5 MPa, and the 12 mm diameter piston rod provides solid guidance for the 300 mm nominal stroke.
Built with a PT1/8 port, an M10x1.25 rod thread, and a 21 mm air cushion, this cylinder operates smoothly within a 30-800 mm/s speed range. The standard TPU seal works reliably from -20 to +70 °C. With a body length A of 182 mm, it fits neatly into space-constrained pneumatic systems where an adjustable end position is critical for process precision.
| Model | Airtac SCJ32 Standard Cylinder SCJ32X300-40 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø32 mm |
| Nominal stroke | 300 mm |
| Stroke adjustment | Up to 40 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. |
| ×300 | Nominal (maximum) stroke length in mm. |
| -40 | 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.
Technicians can quickly fine-tune the actuator's end position during machine installation and debugging, eliminating the need to machine custom stops or swap out fixed-stroke cylinders.
Adjust the stroke end to perfectly align a diverter gate with different conveyor lane widths, enabling rapid product changeovers on packaging lines without mechanical modifications.
Dial in the exact retract position of a glue or paste dispenser to compensate for nozzle wear or changes in part geometry, maintaining consistent bead placement over long production runs.
Choose the SCJ32X300-40 when you need to dial in a precise end stop within a 40 mm window on a 300 mm stroke. If your force requirements increase, stepping up to the 40 mm bore provides 628 N of push force at 0.5 MPa. For applications where the stroke length is permanently fixed and never needs adjustment, the standard SC32X300 fixed-stroke cylinder is a more economical choice. For replacement, match this model exactly: a 32 mm bore, 300 mm nominal stroke, 40 mm adjust range, PT port thread, and basic mounting. At this stroke length, ensure the rod is not subjected to high side loads; if lateral forces are present, use an external guide rail or switch to a guided cylinder to prevent rod bending and premature seal wear.
Adjustable-stroke checklist
At 0.5 MPa, the push force is 402 N and the pull force is 345 N. The pull force is lower due to the area of the 12 mm piston rod. At the maximum operating pressure of 0.9 MPa, the push force reaches 724 N.
The 40 mm adjustment range is controlled by a screw in the rear cap. It allows you to shorten the stroke end position by up to 40 mm from the 300 mm nominal maximum. It is a mechanical end-stop adjustment and does not change the cylinder's force, speed, or the fact that it is a double-acting cylinder.
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