Airtac SCJ40 Standard Cylinder SCJ40X500-10
The AirTAC Airtac SCJ40 Standard Cylinder SCJ40X500-10 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. Ø40mm bore, 500mm nominal stroke, PT1/4 ports and adjustable end cushioning.
- BoreØ40 mm
- Nominal stroke500 mm
- Stroke adjust-10 mm
- Port sizePT1/4
- Rod threadM12×1.25
- CushionAdjustable, 21 mm
About the Airtac SCJ40 Standard Cylinder SCJ40X500-10
The SCJ40X500-10 is a double-acting, single-rod pneumatic cylinder with a field-adjustable stroke end, providing up to 10 mm of fine-tuning range via a rear-cap adjusting screw. With a 40 mm bore and a 16 mm piston rod, it delivers 628 N of push force and 528 N of pull force at 0.5 MPa, making it a capable mid-range actuator for positioning tasks. The cylinder body length is 185 mm, and it uses PT1/4 ports with an M12x1.25 rod thread, suitable for direct mounting or with the SCJ accessory subset.
This model's 500 mm nominal stroke is well within the 1200 mm maximum standard stroke for the 40 mm bore, ensuring it operates as a standard catalog item. The adjustable stroke feature is ideal for commissioning and fine-tuning mechanical end-stops without needing to dismount the cylinder or add external hardware. The built-in air cushion, with a 21 mm length, decelerates the piston smoothly at the end of travel, reducing impact and noise.
Airtac SCJ40 Standard Cylinder SCJ40X500-10 Technical Specifications
| Model | Airtac SCJ40 Standard Cylinder SCJ40X500-10 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø40 mm |
| Nominal stroke | 500 mm |
| Stroke adjustment | Up to 10 mm (rear adjusting screw) |
| Acting type | Double acting (single rod) |
| Port size | PT1/4 |
| Rod thread | M12×1.25 |
| 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 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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 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 SCJ40 Standard Cylinder SCJ40X500-10
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×500 | 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 SCJ40 Standard Cylinder SCJ40X500-10 Is Used
Commissioning & Setup
During machine commissioning, the 10 mm adjustment screw allows technicians to fine-tune the final stop position of a transfer arm without re-plumbing or replacing the cylinder, saving significant setup time.
Product Format Changeover
On a packaging line, the stroke end can be quickly adjusted to accommodate different box sizes. The operator simply turns the rear screw to change the pusher's stopping point for a new product run.
Wear Compensation
In clamping or pressing fixtures, the adjustable stroke can compensate for wear on tooling or contact surfaces over time. The 10 mm range allows for periodic re-adjustment to maintain consistent clamping force and position.
Is the Airtac SCJ40 Standard Cylinder SCJ40X500-10 the Right Cylinder?
Choose the SCJ40X500-10 when your application requires a 500 mm stroke with the ability to precisely dial in the end position within a 10 mm window. If you need more force, stepping up to a 50 mm bore (SCJ50) provides 982 N of push force at the same 0.5 MPa pressure. For applications where the stroke is fixed and never needs adjustment, the standard SC40X500 fixed-stroke cylinder is a more economical choice. If side-loading is a concern at this 500 mm stroke length, consider adding an external guide rail or switching to a guided cylinder to prevent rod bending.
For a direct replacement, match this unit with another AirTAC SCJ adjustable-stroke cylinder of the same 40 mm bore, 500 mm nominal stroke, and 10 mm adjustment range. Ensure the replacement shares the same PT port thread and basic mounting style. If your current unit has a magnet for sensors, order the -S variant (SCJ40X500-10S).
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 SCJ40 Standard Cylinder SCJ40X500-10 FAQ
At the standard operating pressure of 0.5 MPa, the push force is 628 N and the pull force is 528 N. The maximum push force at the 0.9 MPa operating limit is 1130 N. The pull force is lower due to the area of the 16 mm piston rod.
A rear-cap adjusting screw lets you shorten the stroke end by up to 10 mm. Choose this SCJ model over a fixed-stroke SC40 when you need to fine-tune the cylinder's stop position in the field, such as for setup trials, format changes, or to take up mechanical wear, without replacing the entire actuator.
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