Airtac SCJ100 Standard Cylinder SCJ100X25-30S
The AirTAC Airtac SCJ100 Standard Cylinder SCJ100X25-30S 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. Ø100mm bore, 25mm nominal stroke, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Nominal stroke25 mm
- Stroke adjust-30 mm
- Port sizePT1/2
- Rod threadM20×1.5
- CushionAdjustable, 29 mm
About the Airtac SCJ100 Standard Cylinder SCJ100X25-30S
The SCJ100X25-30S is a double-acting, single-rod pneumatic cylinder with a field-adjustable stroke end, giving you up to 30 mm of fine-tuning range via the rear-cap adjusting screw. With a 100 mm bore delivering 3927 N of push force at 0.5 MPa, it provides a robust 25 mm nominal stroke that can be precisely shortened to suit your machine's exact end-stop requirement without changing the cylinder.
This model includes a built-in magnet (-S suffix), allowing CMSG/DMSG/EMSG reed or solid-state sensors to clamp directly onto the tie-rod barrel for reliable end-of-stroke position sensing. The cylinder uses a 25 mm piston rod, PT1/2 ports, and an M20x1.5 rod thread, with a 29 mm air cushion to decelerate the piston smoothly at stroke end.
Airtac SCJ100 Standard Cylinder SCJ100X25-30S Technical Specifications
| Model | Airtac SCJ100 Standard Cylinder SCJ100X25-30S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø100 mm |
| Nominal stroke | 25 mm |
| Stroke adjustment | Up to 30 mm (rear adjusting screw) |
| Acting type | Double acting (single rod) |
| Port size | PT1/2 |
| Rod thread | M20×1.5 |
| 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, 29 mm |
| Max stroke | Up to 1500 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 (Ø100mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 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 SCJ100 Standard Cylinder SCJ100X25-30S
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×25 | 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 SCJ100 Standard Cylinder SCJ100X25-30S Is Used
End-Stop Commissioning
Fine-tune the retract stroke end position during machine setup and commissioning trials without swapping cylinders or machining external hard stops, saving hours of mechanical adjustment time.
Wear Take-Up on Clamps
Compensate for gripper pad or clamp jaw wear on automated assembly conveyors by incrementally shortening the stroke with the rear screw, maintaining consistent clamping force without reprogramming.
Format Changeover
Quickly adapt the cylinder's end position for different product sizes on a packaging line, using the 30 mm adjustment range to switch between formats without needing multiple fixed-stroke cylinders.
Is the Airtac SCJ100 Standard Cylinder SCJ100X25-30S the Right Cylinder?
Choose the SCJ100X25-30S when you need a compact, high-force actuator whose stroke end can be dialed in on the machine. If 3927 N of push at 0.5 MPa is more force than required, stepping down to an 80 mm bore reduces push force to 2513 N while keeping the adjustable-stroke convenience. For applications needing a fixed, non-adjustable stroke, the standard SC series is a simpler alternative.
This cylinder is a direct replacement for another AirTAC SCJ100 adjustable-stroke unit with a 25 mm nominal stroke, 30 mm adjust range, PT ports, basic mounting, and a magnet. If your application involves a longer stroke where side-loading could bend the 25 mm rod, consider adding an external guide rail or switching to a guided cylinder assembly.
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 SCJ100 Standard Cylinder SCJ100X25-30S FAQ
At 0.5 MPa, it generates 3927 N of push force and 3681 N of pull force. The push force is higher because the single rod reduces the piston area on the pull side. At the maximum operating pressure of 1.0 MPa, theoretical push force reaches 7854 N.
Yes, if you need the ability to fine-tune the stroke end. The SCJ100X25-30S has the same 100 mm bore and 25 mm nominal stroke as a fixed SC100X25, but adds a rear adjusting screw with a 30 mm range. Ensure your mounting and port connections (PT1/2) match, and note the SCJ body is slightly longer to accommodate the screw mechanism.
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