Airtac SCJ50 Standard Cylinder SCJ50X30-10S
The AirTAC Airtac SCJ50 Standard Cylinder SCJ50X30-10S is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 10 mm range without swapping the cylinder. Ø50mm bore, 30mm nominal stroke, PT1/4 ports and adjustable end cushioning.
- BoreØ50 mm
- Nominal stroke30 mm
- Stroke adjust-10 mm
- Port sizePT1/4
- Rod threadM16×1.5
- CushionAdjustable, 21 mm
About the Airtac SCJ50 Standard Cylinder SCJ50X30-10S
The SCJ50X30-10S is a double-acting, single-rod pneumatic cylinder with a 50 mm bore and a nominal 30 mm stroke, featuring a rear-cap adjusting screw that provides a 10 mm field-adjustable range for the stroke end. With a 20 mm diameter piston rod and PT1/4 ports, it delivers 982 N of push force and 825 N of pull force at 0.5 MPa, making it a compact yet powerful actuator for applications requiring precise end-stop calibration.
This model includes a built-in magnet (suffix S), allowing direct mounting of CMSG, DMSG, or EMSG reed and solid-state sensors along the tie-rod barrel for reliable end-of-stroke detection. The body length A for this SCJ series is 194 mm, and the unit operates with filtered air across a standard pressure range of 0.15 to 1.0 MPa, with an adjustable pneumatic cushion to decelerate the piston smoothly.
Airtac SCJ50 Standard Cylinder SCJ50X30-10S Technical Specifications
| Model | Airtac SCJ50 Standard Cylinder SCJ50X30-10S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø50 mm |
| Nominal stroke | 30 mm |
| Stroke adjustment | Up to 10 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 SCJ50X30-10S
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×30 | Nominal (maximum) stroke length in mm. |
| -10 | 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 SCJ50X30-10S Is Used
Commissioning Fine-Tuning
The 10 mm screw adjustment lets technicians dial in the exact end position during machine setup without swapping cylinders or adding external hard stops, saving hours of mechanical work.
Small Part Stops
Ideal for creating an adjustable end-stop on a conveyor line for boxes or small components, where the stopping position may need to shift slightly for different product sizes.
Sensor Calibration Jigs
Use the built-in magnet on the SCJ50X30-10S to trigger CMSG sensors at a stroke end that is easily recalibrated via the adjusting screw, perfect for test fixtures and calibration stations.
Is the Airtac SCJ50 Standard Cylinder SCJ50X30-10S the Right Cylinder?
Choose the SCJ50 bore when your application needs around 982 N of push force at standard plant air pressure; this sits between the smaller 40 mm bore (628 N push) and the larger 63 mm bore (1559 N push). The SCJ adjustable-stroke design is the right pick over a fixed-stroke SC when you anticipate needing to fine-tune the cylinder's end position on the machine, such as during commissioning or for format changeovers. For a direct replacement, match this model with another SCJ50X30-10S, ensuring the 10 mm adjustment range, PT port thread, and the built-in magnet are all specified to maintain sensor compatibility.
Adjustable-stroke checklist
- ✓ Need to fine-tune stroke on the line?
- ✓ Nominal stroke + adjust range (-10)
- ✓ 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 SCJ50X30-10S FAQ
The rear cap has an adjusting screw that limits the piston's return stroke end. By turning the screw, you can shorten the effective stroke by up to 10 mm from the nominal 30 mm, allowing you to fine-tune the end position without changing the cylinder itself.
At 0.5 MPa, the push force is 982 N and the pull force is 825 N. The maximum push force at the operating limit of 0.9 MPa is 1767 N. Because it is a single-rod cylinder, the push force is greater than the pull force due to the rod area on the return side.
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