Airtac SCJ100 Standard Cylinder SCJ100X225-50
The AirTAC Airtac SCJ100 Standard Cylinder SCJ100X225-50 is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 50 mm range without swapping the cylinder. Ø100mm bore, 225mm nominal stroke, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Nominal stroke225 mm
- Stroke adjust-50 mm
- Port sizePT1/2
- Rod threadM20×1.5
- CushionAdjustable, 29 mm
About the Airtac SCJ100 Standard Cylinder SCJ100X225-50
The SCJ100X225-50 is a double-acting, single-rod pneumatic cylinder with a field-adjustable stroke end, built around a robust 100 mm bore. Its rear-cap adjusting screw provides up to 50 mm of stroke-end reduction, allowing you to fine-tune the piston stop position for commissioning or format changes without removing the cylinder. At 0.5 MPa, it delivers a substantial 3927 N of push force and 3681 N on the pull stroke, driven by a 25 mm diameter piston rod.
This tie-rod cylinder uses PT1/2 ports and an M20x1.5 rod thread, with a 29 mm air cushion to decelerate the piston quietly at the end of travel. The body length A is 245 mm, and the standard stroke range for this bore extends up to 1500 mm. The adjustable screw only sets the stroke end position; it does not alter the cylinder's force output or speed. For position sensing, a magnet can be added by ordering the -S suffix variant.
Airtac SCJ100 Standard Cylinder SCJ100X225-50 Technical Specifications
| Model | Airtac SCJ100 Standard Cylinder SCJ100X225-50 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø100 mm |
| Nominal stroke | 225 mm |
| Stroke adjustment | Up to 50 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 SCJ100X225-50
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×225 | Nominal (maximum) stroke length in mm. |
| -50 | 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 SCJ100X225-50 Is Used
Commissioning & Setup
During machine commissioning, the 50 mm rear adjuster allows technicians to perfectly synchronize the cylinder's end stop with mating tooling or fixtures without iterative disassembly, saving hours of setup time.
Product Changeover
On packaging lines handling different box heights, the adjustable stroke lets operators quickly reset the pusher's end position for a new product format by simply turning the rear screw, eliminating the need for mechanical stop changes.
Wear Compensation
In high-cycle clamping or pressing operations, the 50 mm adjustment range can be used to take up mechanical wear on contact surfaces over time, maintaining consistent clamping force and part quality without replacing the actuator.
Is the Airtac SCJ100 Standard Cylinder SCJ100X225-50 the Right Cylinder?
Choose the SCJ100X225-50 when you need to dial in a precise end stop within a 50 mm window on a 100 mm bore platform. If 3927 N of push force at 0.5 MPa is more than your application requires, stepping down to an 80 mm bore (2513 N push) can reduce air consumption and physical size. For applications needing a fixed, non-adjustable stroke, the standard SC100 series is a simpler alternative. This model is a direct replacement for any AirTAC SCJ100 cylinder with a 225 mm nominal stroke, a 50 mm adjust range, PT ports, and basic mounting. For strokes of this length, ensure the rod is not subjected to high side loads; if lateral forces are present, integrate an external linear guide or consider 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 (-50)
- ✓ 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 SCJ100X225-50 FAQ
At the standard operating pressure of 0.5 MPa, this 100 mm bore cylinder generates 3927 N of push force. The pull force is 3681 N, which is lower due to the area consumed by the 25 mm piston rod. At the maximum operating pressure of 1.0 MPa, the theoretical push force reaches 7854 N.
Yes, if you need the added benefit of a field-adjustable stroke end. The SCJ100X225-50 matches the mounting footprint and force output of an SC100 at the same bore. Ensure your replacement matches the 225 mm nominal stroke, the 50 mm adjust range, PT1/2 ports, and basic mounting configuration. If you don't need adjustability, the standard SC100 is the direct fixed-stroke equivalent.
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