Airtac SCJ32 Standard Cylinder SCJ32X25-30S
The AirTAC Airtac SCJ32 Standard Cylinder SCJ32X25-30S 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, 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 SCJ32X25-30S
The SCJ32X25-30S is a compact double-acting, single-rod air cylinder with a field-adjustable stroke end, letting you fine-tune the piston stop position by up to 30 mm without swapping the unit. Its 12 mm rod and PT1/8 ports deliver 402 N of push force at 0.5 MPa, making it a precise actuator for light commissioning and format-change tasks.
This model includes a built-in magnet (-S), so CMSG/DMSG/EMSG reed or solid-state sensors clamp directly onto the tie-rod barrel for reliable end-of-stroke detection. The body length A is 182 mm, and the adjustable air cushion helps decelerate the piston smoothly within the 21 mm cushion zone.
Airtac SCJ32 Standard Cylinder SCJ32X25-30S Technical Specifications
| Model | Airtac SCJ32 Standard Cylinder SCJ32X25-30S |
|---|---|
| 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 SCJ32X25-30S
| 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 SCJ32X25-30S Is Used
Commissioning Fine-Tuning
Adjust the stroke end by up to 30 mm on the machine during initial setup to perfectly align the actuator with mating parts, eliminating the need for shims or custom spacers.
Small-Part Diverting
Dial in the precise push-off position for diverting lightweight components on a conveyor, with the built-in magnet providing clean sensor signals for high-speed counting.
Wear Compensation
Periodically adjust the rear screw to take up mechanical play or wear in the tooling, maintaining consistent clamping or pressing depth over the machine's life without replacing the cylinder.
Is the Airtac SCJ32 Standard Cylinder SCJ32X25-30S the Right Cylinder?
Choose the SCJ32 for applications needing up to 402 N push at 0.5 MPa. If you require more force, step up to the SCJ40, which provides 628 N push at the same pressure. For fixed, non-adjustable strokes, the standard SC series is a simpler alternative. A direct replacement must match the 32 mm bore, 25 mm nominal stroke, 30 mm adjust range, PT port thread, and the built-in magnet. For strokes of 300 mm or more, consider an external guide to prevent rod bending under side loads.
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 SCJ32X25-30S FAQ
A rear-cap adjusting screw sets the stroke end position within a 30 mm range. The 25 mm nominal stroke is the maximum; you can shorten the stroke by up to 30 mm by turning the screw, which physically limits the piston's retract position.
At 0.5 MPa, the push force is 402 N and the pull force is 345 N. At the maximum operating pressure of 0.9 MPa, the push force reaches 724 N. The pull force is lower because the rod reduces the effective piston area on the return stroke.
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