Airtac SCJ32 Standard Cylinder SCJ32X225-20
The AirTAC Airtac SCJ32 Standard Cylinder SCJ32X225-20 is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 20 mm range without swapping the cylinder. Ø32mm bore, 225mm nominal stroke, PT1/8 ports and adjustable end cushioning.
- BoreØ32 mm
- Nominal stroke225 mm
- Stroke adjust-20 mm
- Port sizePT1/8
- Rod threadM10×1.25
- CushionAdjustable, 21 mm
About the Airtac SCJ32 Standard Cylinder SCJ32X225-20
The SCJ32X225-20 is a 32mm bore double-acting single-rod cylinder with a rear-cap adjusting screw that lets you fine-tune the stroke end by up to 20 mm without removing the cylinder from the machine. Its 12 mm diameter rod and M10x1.25 rod thread deliver a push force of 402 N at 0.5 MPa, making it a compact workhorse for light-duty positioning tasks where the final stroke length needs to be dialled in during commissioning or after a format change.
Built on the proven SC tie-rod platform, this adjustable-stroke variant has a body length A(SCJ) of 182 mm and uses PT1/8 ports. The 21 mm air cushion at each end decelerates the piston quietly, and the standard TPU seals cover a -20 to +70 °C operating window. Because the adjusting screw only sets the stroke end position, the full 724 N push force at 0.9 MPa is always available across the entire 0-205 mm effective stroke range.
Airtac SCJ32 Standard Cylinder SCJ32X225-20 Technical Specifications
| Model | Airtac SCJ32 Standard Cylinder SCJ32X225-20 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø32 mm |
| Nominal stroke | 225 mm |
| Stroke adjustment | Up to 20 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 SCJ32X225-20
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×225 | Nominal (maximum) stroke length in mm. |
| -20 | 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 SCJ32X225-20 Is Used
Commissioning Fine-Tuning
During machine bring-up, the 20 mm adjustment screw lets technicians dial in the exact end-stop position for a 32 mm bore actuator without swapping shims or machining custom stops.
Wear Take-Up on Stops
On small-bore pusher stations, the SCJ32X225-20 can be adjusted to compensate for wear on the tooling or product contact face, maintaining consistent placement over thousands of cycles.
Format Changeover
For packaging lines that run multiple product sizes, the 20 mm stroke-end adjustment allows a quick mechanical change of the cylinder's extended position without reprogramming servo axes.
Is the Airtac SCJ32 Standard Cylinder SCJ32X225-20 the Right Cylinder?
Choose the SCJ32X225-20 when you need to fine-tune the end position of a 32 mm bore cylinder without adding external hard stops. If the 402 N push force at 0.5 MPa is too low, step up to the 40 mm bore SCJ40 series, which provides 628 N at the same pressure. For applications that do not require field adjustment, the fixed-stroke SC32X225 offers a simpler, slightly shorter package. When replacing an existing SCJ unit, match the 32 mm bore, 225 mm nominal stroke, 20 mm adjust range, PT1/8 port thread, and basic mounting style exactly.
Adjustable-stroke checklist
- ✓ Need to fine-tune stroke on the line?
- ✓ Nominal stroke + adjust range (-20)
- ✓ 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 SCJ32X225-20 FAQ
At 0.5 MPa air pressure, the 32 mm bore generates 402 N of push force and 345 N of pull force. At the maximum operating pressure of 1.0 MPa, the theoretical push force is 804 N, though AirTAC rates the maximum practical push at 0.9 MPa, which yields 724 N.
Only if you need the adjustable stroke feature. The SCJ body is slightly longer to house the rear adjusting screw. If you need a drop-in replacement for a fixed-stroke SC32, order the SC32 series. If you need the adjustability, match the 32 mm bore, 225 mm nominal stroke, and PT1/8 ports.
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