Airtac SCJ100 Standard Cylinder SCJ100X300-50S
The AirTAC Airtac SCJ100 Standard Cylinder SCJ100X300-50S 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, 300mm nominal stroke, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Nominal stroke300 mm
- Stroke adjust-50 mm
- Port sizePT1/2
- Rod threadM20×1.5
- CushionAdjustable, 29 mm
About the Airtac SCJ100 Standard Cylinder SCJ100X300-50S
The SCJ100X300-50S is a double-acting, single-rod pneumatic cylinder with a field-adjustable stroke, providing a nominal 300 mm of travel that can be shortened by up to 50 mm via the rear-cap adjusting screw. This 100 mm bore model delivers a substantial 3927 N of push force at 0.5 MPa, making it a powerful actuator for industrial positioning tasks where the exact stroke end needs on-machine fine-tuning without swapping the cylinder.
Featuring a built-in magnet, this -S variant is ready for direct mounting of CMSG/DMSG/EMSG sensors for electronic end-of-stroke confirmation. The cylinder uses a 25 mm diameter piston rod, PT1/2 port threads, and an M20x1.5 rod thread for robust connection. Its adjustable air cushion decelerates the piston smoothly, and the body length A(SCJ) is 245 mm, providing a compact yet powerful package for integration into automated machinery.
Airtac SCJ100 Standard Cylinder SCJ100X300-50S Technical Specifications
| Model | Airtac SCJ100 Standard Cylinder SCJ100X300-50S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø100 mm |
| Nominal stroke | 300 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 SCJ100X300-50S
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×300 | 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 SCJ100X300-50S Is Used
Commissioning & Setup
Field engineers can dial in the exact 300 mm stroke end position during machine commissioning, compensating for assembly tolerances without needing to order multiple fixed-stroke cylinders.
Product Format Changeover
On a packaging line, the 50 mm adjustment range allows a quick stroke change to accommodate different box sizes, reducing downtime between production runs.
Wear Compensation
In a pressing or clamping operation, the adjustable screw can be used to take up mechanical wear on tooling or contact surfaces over time, maintaining consistent clamping force and position.
Is the Airtac SCJ100 Standard Cylinder SCJ100X300-50S the Right Cylinder?
Choose the SCJ100X300-50S when you need a powerful, adjustable-stroke actuator for applications like commissioning a new machine or accommodating format changes. If 3927 N of push force at 0.5 MPa is insufficient, stepping up to a 125 mm bore provides 6136 N. For a lighter, more compact solution, the 80 mm bore offers 2513 N. This adjustable-stroke model is ideal when the final stroke length is uncertain; if a fixed stroke is acceptable, a standard SC100X300 cylinder is a simpler alternative. For strokes of 300 mm or more, be mindful of side-loading on the rod. If the load is not guided, an external guide rail or a switch to a guided cylinder is recommended to prevent rod bending and premature seal wear. A direct replacement must match the 100 mm bore, 300 mm nominal stroke, 50 mm adjust range, PT port threads, and the -S magnet option.
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 SCJ100X300-50S FAQ
At the standard operating pressure of 0.5 MPa, it produces 3927 N of push force and 3681 N of pull force. The maximum push force at 0.9 MPa is 7068 N. The pull force is lower due to the area of the 25 mm piston rod.
Yes, it is a direct dimensional replacement for any AirTAC SCJ100X300-50S cylinder. Ensure the replacement matches the 100 mm bore, 300 mm nominal stroke, 50 mm adjustment range, PT port threads, and the -S magnet option for sensor compatibility.
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