Airtac SCJ32 Standard Cylinder SCJ32X125-40S
The AirTAC Airtac SCJ32 Standard Cylinder SCJ32X125-40S 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, 125mm nominal stroke, PT1/8 ports and adjustable end cushioning.
- BoreØ32 mm
- Nominal stroke125 mm
- Stroke adjust-40 mm
- Port sizePT1/8
- Rod threadM10×1.25
- CushionAdjustable, 21 mm
About the Airtac SCJ32 Standard Cylinder SCJ32X125-40S
The SCJ32X125-40S is a double-acting, single-rod tie-rod cylinder that puts stroke-end fine-tuning directly on the machine. Its rear adjusting screw provides up to 40 mm of adjustment, letting you dial in the exact stop position without swapping the cylinder or adding external hard stops. With a 12 mm rod and PT1/8 ports, this model delivers 402 N of push force at 0.5 MPa and up to 724 N at the maximum operating pressure of 0.9 MPa.
This unit includes a built-in magnet, so standard CMSG/DMSG/EMSG reed or solid-state sensors clamp directly onto the barrel for reliable end-of-stroke sensing. The adjustable cushion decelerates the piston smoothly over the final 21 mm of travel. It is a practical choice for commissioning trials or applications where the stroke length needs to be tweaked after installation.
Airtac SCJ32 Standard Cylinder SCJ32X125-40S Technical Specifications
| Model | Airtac SCJ32 Standard Cylinder SCJ32X125-40S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø32 mm |
| Nominal stroke | 125 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.
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 SCJ32X125-40S
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×125 | 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.
Where the Airtac SCJ32 Standard Cylinder SCJ32X125-40S Is Used
Commissioning & Setup
Fine-tune the end position during machine commissioning. The 40 mm adjustment screw lets integrators dial in the exact stroke without fabricating custom stops, saving hours of mechanical work.
Product Format Changeover
Quickly adjust a pusher or diverter stroke when switching between product sizes on a packaging line. Operators can change the stop position in seconds with a simple screw adjustment.
Wear Compensation
Take up mechanical play or seal wear over time in clamping and pressing fixtures. The adjustable stroke end allows maintenance teams to restore precise positioning without replacing the cylinder.
Is the Airtac SCJ32 Standard Cylinder SCJ32X125-40S the Right Cylinder?
Choose the SCJ32 when you need a compact, field-adjustable stroke in the 32 mm bore class. If your load demands more force, stepping up to the SCJ40 provides 628 N of push at 0.5 MPa. For applications where the stroke is fixed and never needs field changes, the standard SC32 fixed-stroke cylinder is a simpler, more economical alternative. This SCJ32X125-40S is a direct replacement for an AirTAC SCJ32 cylinder with a 125 mm nominal stroke, 40 mm adjustment range, PT ports, and a magnetic piston. For strokes of 300 mm or more, evaluate side-loading on the 12 mm rod and consider an external guide or a guided cylinder to prevent rod bending.
Adjustable-stroke checklist
- ✓ Need to fine-tune stroke on the line?
- ✓ Nominal stroke + adjust range (-40)
- ✓ 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 SCJ32X125-40S FAQ
The push force is 402 N at 0.5 MPa and 724 N at 0.9 MPa. The pull force is lower due to the single rod design, delivering 345 N at 0.5 MPa. The theoretical maximum force at 1.0 MPa is 82 kgf.
Yes, if you need field-adjustable stroke. The SCJ32X125-40S has the same bore, port size (PT1/8), and tie-rod construction as an SC32. Ensure the 40 mm adjustment range and the slightly longer body length (182 mm) fit your mounting space.
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