Airtac SCJ32 Standard Cylinder SCJ32X250-75
The AirTAC Airtac SCJ32 Standard Cylinder SCJ32X250-75 is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 75 mm range without swapping the cylinder. Ø32mm bore, 250mm nominal stroke, PT1/8 ports and adjustable end cushioning.
- BoreØ32 mm
- Nominal stroke250 mm
- Stroke adjust-75 mm
- Port sizePT1/8
- Rod threadM10×1.25
- CushionAdjustable, 21 mm
About the Airtac SCJ32 Standard Cylinder SCJ32X250-75
The SCJ32X250-75 is a double-acting, single-rod pneumatic cylinder with a 75 mm rear adjusting screw that lets you dial in the exact stroke end position on the machine. With a 32 mm bore and a 12 mm piston rod, it delivers 402 N of push force at 0.5 MPa and up to 724 N at the maximum operating pressure of 0.9 MPa, making it a compact workhorse for light positioning and clamping tasks.
Because the stroke is field-adjustable, you can compensate for tooling wear, accommodate small batch-to-batch format changes, or fine-tune a stop point during commissioning without swapping the cylinder or adding external hard stops. The body length A(SCJ) is 182 mm, and the PT1/8 port keeps the plumbing simple on compact machines.
Airtac SCJ32 Standard Cylinder SCJ32X250-75 Technical Specifications
| Model | Airtac SCJ32 Standard Cylinder SCJ32X250-75 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø32 mm |
| Nominal stroke | 250 mm |
| Stroke adjustment | Up to 75 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.
Theoretical Output Force (Ø32mm)
| 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.
Model Code: Airtac SCJ32 Standard Cylinder SCJ32X250-75
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×250 | Nominal (maximum) stroke length in mm. |
| -75 | 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.
Where the Airtac SCJ32 Standard Cylinder SCJ32X250-75 Is Used
Commissioning & Setup
Dial in the exact end-of-stroke position on a new assembly fixture without machining custom stops. The 75 mm adjustment range gives technicians plenty of room to find the sweet spot during initial machine bring-up.
Wear Compensation
On a repetitive clamping station, use the rear screw to take up the slack as contact pads wear down over thousands of cycles, maintaining consistent clamp force without replacing the cylinder or the tooling.
Small-Batch Format Change
When a packaging line switches between slightly different box heights, adjust the stroke end in seconds to match the new product, avoiding the downtime of a full cylinder swap for a short-run job.
Is the Airtac SCJ32 Standard Cylinder SCJ32X250-75 the Right Cylinder?
Step up to the 40 mm bore SCJ if your application needs more than the 402 N push force this 32 mm unit provides at standard plant air; the SCJ40 delivers 628 N at the same 0.5 MPa. If your stroke never needs field adjustment, a fixed-stroke SC32X250 is a simpler, slightly shorter alternative. For a direct replacement, match the 32 mm bore, 250 mm nominal stroke, 75 mm adjustable range, PT port thread, and basic mounting. For strokes of 250 mm, watch for side loading on the 12 mm rod—if the load is not guided externally, consider adding a guide rail or switching to a guided cylinder to protect the rod bearing.
Adjustable-stroke checklist
- ✓ Need to fine-tune stroke on the line?
- ✓ Nominal stroke + adjust range (-75)
- ✓ Required force at your working pressure
- ✓ Port/thread type (PT/NPT/G)
- ✓ Magnet (-S) for sensors?
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Set the rear adjusting screw, then lock it before running.
- check Adjust end cushion screws for smooth stops.
- check Use SCJ mounting accessory (FA / LB / TC / TCM1).
- check Installation by qualified personnel per AirTAC docs.
Airtac SCJ32 Standard Cylinder SCJ32X250-75 FAQ
At 0.5 MPa it produces 402 N pushing and 345 N pulling (the pull force is lower because of the 12 mm rod area). At the maximum operating pressure of 0.9 MPa, push force reaches 724 N. Always size for the required force at your actual working pressure.
You can, provided the bore, port size (PT1/8), and mounting style match, and you have space for the slightly longer SCJ body (A=182 mm). The SCJ is a direct dimensional match for another AirTAC SCJ of the same bore and stroke; swapping from a fixed-stroke SC will require checking the extended rear-cap length that houses the 75 mm adjusting screw.
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