Airtac SCJ50 Standard Cylinder SCJ50X150-30S
The AirTAC Airtac SCJ50 Standard Cylinder SCJ50X150-30S 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. Ø50mm bore, 150mm nominal stroke, PT1/4 ports and adjustable end cushioning.
- BoreØ50 mm
- Nominal stroke150 mm
- Stroke adjust-30 mm
- Port sizePT1/4
- Rod threadM16×1.5
- CushionAdjustable, 21 mm
About the Airtac SCJ50 Standard Cylinder SCJ50X150-30S
The SCJ50X150-30S is a 50 mm bore double-acting, single-rod cylinder with a 150 mm nominal stroke and a 30 mm field-adjustable range set by a rear-cap screw. With 982 N of push force at 0.5 MPa (1767 N at 0.9 MPa) and a 20 mm rod, it handles moderate clamping, pressing, and positioning tasks where the end-of-stroke needs fine-tuning during commissioning or format changes.
This model includes a built-in magnet (-S), allowing CMSG/DMSG/EMSG sensors to be clamped directly onto the tie-rod barrel for contactless position feedback. The adjustable screw shortens the stroke end by up to 30 mm without changing the cylinder body, which measures 194 mm in length for the SCJ configuration. Its PT1/4 ports and M16x1.5 rod thread offer straightforward pneumatic connections.
Airtac SCJ50 Standard Cylinder SCJ50X150-30S Technical Specifications
| Model | Airtac SCJ50 Standard Cylinder SCJ50X150-30S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø50 mm |
| Nominal stroke | 150 mm |
| Stroke adjustment | Up to 30 mm (rear adjusting screw) |
| Acting type | Double acting (single rod) |
| Port size | PT1/4 |
| Rod thread | M16×1.5 |
| 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 1200 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 (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 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 SCJ50 Standard Cylinder SCJ50X150-30S
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×150 | 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 SCJ50 Standard Cylinder SCJ50X150-30S Is Used
Commissioning Fine-Tuning
During machine setup, the 30 mm adjustment screw lets technicians dial in the exact end-stop position for a 50 mm bore actuator without swapping shims or hard stops, speeding up line start-up.
Wear Compensation
In repetitive pressing or clamping operations, the adjustable stroke can be periodically tweaked to compensate for tooling or pad wear, maintaining consistent contact force without replacing the cylinder.
Format Changeover
On packaging or assembly lines running multiple product sizes, operators can quickly adjust the stroke end of this 150 mm nominal cylinder to match a new product dimension, reducing changeover time.
Is the Airtac SCJ50 Standard Cylinder SCJ50X150-30S the Right Cylinder?
Choose the SCJ50X150-30S when your application needs a 50 mm bore force class (982 N push at 0.5 MPa) and the ability to dial in the stroke end precisely. If you need more force, step up to the 63 mm bore which delivers 1559 N push at the same pressure; for a lighter, more compact solution, the 40 mm bore provides 628 N. If the stroke never needs adjustment, the fixed-stroke SC50X150 is a simpler, cost-effective alternative. This cylinder replaces any AirTAC SCJ50 with a 150 mm nominal stroke, a 30 mm adjust range, PT ports, and a magnet. For strokes of 300 mm or more, consider an external guide or a guided cylinder to protect the 20 mm rod from side-load bending.
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 SCJ50 Standard Cylinder SCJ50X150-30S FAQ
At 0.5 MPa, it delivers 982 N push and 825 N pull. At the maximum operating pressure of 1.0 MPa, the theoretical push force is 1964 N. The pull force is lower because the 20 mm rod reduces the effective piston area on the return stroke.
Only if you do not need the adjustable stroke feature. The SCJ50X150-30S has a rear adjusting screw that shortens the stroke end by up to 30 mm. A fixed-stroke SC50X150 lacks this mechanism. For a direct replacement, you must match the bore, 150 mm nominal stroke, 30 mm adjust range, PT ports, and the built-in magnet.
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