Airtac SCJ40 Standard Cylinder SCJ40X225-100S
The AirTAC Airtac SCJ40 Standard Cylinder SCJ40X225-100S is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 100 mm range without swapping the cylinder. Ø40mm bore, 225mm nominal stroke, PT1/4 ports and adjustable end cushioning.
- BoreØ40 mm
- Nominal stroke225 mm
- Stroke adjust-100 mm
- Port sizePT1/4
- Rod threadM12×1.25
- CushionAdjustable, 21 mm
About the Airtac SCJ40 Standard Cylinder SCJ40X225-100S
The AirTAC SCJ40X225-100S is a double-acting, single-rod pneumatic cylinder that puts fine stroke-end tuning directly into the rear cap. With a 40mm bore, 16mm piston rod, and a generous 100mm adjustable range, you can dial in the exact end position on the fly—perfect for commissioning trials or format changeovers without swapping the cylinder. At 0.5 MPa it delivers 628 N of push force, stepping up to 1130 N at 0.9 MPa, so it handles moderate clamping and positioning tasks with ease.
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 detection. The standard PT1/4 port, TPU seals, and basic mounting keep the package straightforward. Body length A(SCJ) is 185 mm, and the adjustable air cushion decelerates the piston smoothly at both ends to protect your tooling.
Airtac SCJ40 Standard Cylinder SCJ40X225-100S Technical Specifications
| Model | Airtac SCJ40 Standard Cylinder SCJ40X225-100S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø40 mm |
| Nominal stroke | 225 mm |
| Stroke adjustment | Up to 100 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 SCJ40X225-100S
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×225 | Nominal (maximum) stroke length in mm. |
| -100 | 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 SCJ40X225-100S Is Used
Commissioning & Setup
Field technicians can fine-tune the 100mm stroke-end adjustment during initial machine setup, quickly dialing in the perfect actuator throw without needing to re-plumb or swap out cylinders.
Product Changeover
On packaging or sorting lines, the adjustable stroke lets operators reset a stop gate or diverter position for a new product size in seconds, minimizing downtime between batches.
Wear Compensation
In high-cycle clamping fixtures, the rear adjusting screw can be advanced slightly over time to take up mechanical wear in the tooling, maintaining consistent clamp force without replacing components.
Is the Airtac SCJ40 Standard Cylinder SCJ40X225-100S the Right Cylinder?
Choose the SCJ40 when you need a compact, adjustable-stroke actuator in the 40mm bore class. If your force requirement grows, the SCJ50 delivers 982 N push at 0.5 MPa—a meaningful step up. For a fixed-stroke solution where the stroke never changes, the standard SC series is a simpler, cost-effective alternative. This SCJ40X225-100S is a direct dimensional replacement for another AirTAC SCJ40 with a 225mm nominal stroke, 100mm adjust range, PT ports, and a magnet. For strokes of 225 mm, ensure the rod is not subjected to high side loads; if lateral forces are present, couple the cylinder with an external linear guide or switch to a guided cylinder to prevent rod bending and premature seal wear.
Adjustable-stroke checklist
- ✓ Need to fine-tune stroke on the line?
- ✓ Nominal stroke + adjust range (-100)
- ✓ 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 SCJ40X225-100S FAQ
At 0.5 MPa, this 40mm bore cylinder provides 628 N of push force and 528 N of pull force. The maximum operating pressure is 1.0 MPa, yielding a theoretical push force of up to 1130 N. The push force is always greater than the pull force due to the area of the single piston rod.
Yes, if you need field adjustability. The SCJ40X225-100S matches the mounting footprint of an AirTAC SC40 at 225mm stroke, but adds a rear adjusting screw that can shorten the stroke by up to 100mm. Ensure your machine has clearance for the slightly longer SCJ body (185mm A-length) and that you are using the same PT1/4 port thread.
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