Airtac SCJ32 Standard Cylinder SCJ32X250-50S
The AirTAC Airtac SCJ32 Standard Cylinder SCJ32X250-50S is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 50 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-50 mm
- Port sizePT1/8
- Rod threadM10×1.25
- CushionAdjustable, 21 mm
About the Airtac SCJ32 Standard Cylinder SCJ32X250-50S
The SCJ32X250-50S is a 32 mm bore double-acting single-rod cylinder that delivers 402 N of push force at 0.5 MPa, giving you precise pneumatic control in a compact tie-rod body. Its rear-cap adjusting screw provides a 50 mm field-adjustable stroke-end range, so you can fine-tune the piston stop position without removing the cylinder from the machine.
This model includes a built-in magnet (suffix -S), allowing CMSG/DMSG/EMSG reed or solid-state sensors to clamp directly onto the barrel for reliable end-of-stroke detection. With a 12 mm diameter rod, PT1/8 ports, and a 21 mm air cushion, it handles speeds of 30-800 mm/s and is rated for a maximum standard stroke of 1000 mm.
Airtac SCJ32 Standard Cylinder SCJ32X250-50S Technical Specifications
| Model | Airtac SCJ32 Standard Cylinder SCJ32X250-50S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø32 mm |
| Nominal stroke | 250 mm |
| Stroke adjustment | Up to 50 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 SCJ32X250-50S
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×250 | Nominal (maximum) stroke length in mm. |
| -50 | 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 SCJ32X250-50S Is Used
Commissioning & Setup
Fine-tune the end-stop position during machine commissioning with the 50 mm adjustment screw, allowing operators to dial in the exact stroke needed for a new fixture without swapping cylinders.
Wear Take-Up on Stops
Compensate for mechanical wear on conveyor stops or clamps over time. The adjustable stroke lets maintenance teams quickly recover the precise stopping position, extending the life of tooling.
Format Changeovers
Quickly adapt to different product sizes on a packaging line. The 50 mm adjustment range allows a single cylinder to handle multiple box heights, reducing changeover time and inventory.
Is the Airtac SCJ32 Standard Cylinder SCJ32X250-50S the Right Cylinder?
Choose this 32 mm bore when your application needs up to 402 N of push force at standard plant air. If you require more force, stepping up to the 40 mm bore provides 628 N at the same pressure. For applications where the stroke length never changes after commissioning, the fixed-stroke SC32 series offers a simpler, more cost-effective alternative without the rear adjuster.
To replace an existing SCJ32X250-50S, match the bore, 250 mm nominal stroke, 50 mm adjust range, PT port thread, and the -S magnet option. This basic mount cylinder uses the rod's M10x1.25 knuckle thread for attachment; for a pivoting mount, consider the TC centre trunnion with the F-SC32TC kit.
Adjustable-stroke checklist
- ✓ Need to fine-tune stroke on the line?
- ✓ Nominal stroke + adjust range (-50)
- ✓ 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 SCJ32X250-50S FAQ
The push force is 402 N at 0.5 MPa and 724 N at the maximum operating pressure of 0.9 MPa. The pull force is 345 N at 0.5 MPa due to the 12 mm piston rod area. This single-rod design means push force is always greater than pull force.
No. The SCJ cylinder will not hold its position if air pressure is lost or the valve is centered; the piston will drift. The rear adjusting screw only sets the stroke end point and is not a mechanical lock. For load holding, you must add an external rod brake or a pilot-operated check valve.
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