Airtac SCJ32 Standard Cylinder SCJ32X25-30
The AirTAC Airtac SCJ32 Standard Cylinder SCJ32X25-30 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, 25mm nominal stroke, PT1/8 ports and adjustable end cushioning.
- BoreØ32 mm
- Nominal stroke25 mm
- Stroke adjust-30 mm
- Port sizePT1/8
- Rod threadM10×1.25
- CushionAdjustable, 21 mm
About the Airtac SCJ32 Standard Cylinder SCJ32X25-30
The SCJ32X25-30 is a double-acting, single-rod pneumatic cylinder with a rear adjusting screw that provides up to 30 mm of stroke-end adjustment. This allows precise field tuning of the piston stop position without swapping the cylinder, ideal for commissioning and fine-positioning tasks. With a 12 mm diameter rod and PT1/8 ports, it delivers 402 N of push force and 345 N of pull force at 0.5 MPa.
Built on a durable tie-rod design, the SCJ32X25-30 features a 21 mm air cushion for smooth deceleration. Its adjustable stroke is set via a rear-cap screw, offering a compact solution where the machine's end-stop needs to be dialled in after installation. The body length A is 182 mm, making it a direct fit for setups needing a compact, tunable actuator.
Airtac SCJ32 Standard Cylinder SCJ32X25-30 Technical Specifications
| Model | Airtac SCJ32 Standard Cylinder SCJ32X25-30 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø32 mm |
| Nominal stroke | 25 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.
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 SCJ32X25-30
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×25 | 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.
Where the Airtac SCJ32 Standard Cylinder SCJ32X25-30 Is Used
Commissioning Fine-Tuning
Dial in the exact stop position during machine setup. The 30 mm rear screw adjustment lets technicians compensate for assembly tolerances without removing the cylinder.
Small Part Stops
Adjustable end-stop for diverting or stopping small products on a conveyor. Operators can quickly change the stop point for different product sizes using the rear screw.
Wear Compensation
In cyclic pressing or clamping fixtures, the stroke can be incrementally extended via the adjusting screw to take up wear on tooling or contact surfaces, maintaining consistent pressure.
Is the Airtac SCJ32 Standard Cylinder SCJ32X25-30 the Right Cylinder?
Choose the SCJ32X25-30 when you need to fine-tune the stroke end position within a 30 mm window during setup or changeover. If you require more push force, step up to the 40 mm bore SCJ, which provides 628 N of push at 0.5 MPa. For applications needing a fixed, non-adjustable stroke, the standard SC32 series offers a simpler alternative. A direct replacement must match the 32 mm bore, 25 mm nominal stroke, 30 mm adjust range, PT1/8 ports, and basic mounting style.
Adjustable-stroke checklist
- ✓ Need to fine-tune stroke on the line?
- ✓ Nominal stroke + adjust range (-30)
- ✓ 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 SCJ32X25-30 FAQ
At 0.5 MPa, the cylinder provides 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. The push force is greater than the pull force due to the single-rod design.
A screw in the rear cap mechanically limits the piston's retraction stroke end. Turning the screw changes the stop position by up to 30 mm. It adjusts the stroke end only, not the cylinder's force or speed, and does not lock the piston in place when air pressure is removed.
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