Airtac SCJ100 Standard Cylinder SCJ100X250-100
The AirTAC Airtac SCJ100 Standard Cylinder SCJ100X250-100 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. Ø100mm bore, 250mm nominal stroke, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Nominal stroke250 mm
- Stroke adjust-100 mm
- Port sizePT1/2
- Rod threadM20×1.5
- CushionAdjustable, 29 mm
About the Airtac SCJ100 Standard Cylinder SCJ100X250-100
The SCJ100X250-100 is a double-acting, single-rod tie-rod cylinder with a 100 mm adjustable stroke range, letting you fine-tune the end position from 150 mm up to the full 250 mm nominal stroke. At 0.5 MPa, it delivers 3927 N of push force and 3681 N on the pull stroke, driven by a 25 mm diameter piston rod through PT1/2 ports.
A 29 mm air cushion at each end decelerates the piston, and the rear adjusting screw sets the stroke end mechanically without altering the cylinder's force rating. The body length A(SCJ) is 245 mm, making it a compact solution for applications where the stroke must be dialled in during commissioning or format changes.
Airtac SCJ100 Standard Cylinder SCJ100X250-100 Technical Specifications
| Model | Airtac SCJ100 Standard Cylinder SCJ100X250-100 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø100 mm |
| Nominal stroke | 250 mm |
| Stroke adjustment | Up to 100 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 SCJ100X250-100
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×250 | 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 SCJ100 Standard Cylinder SCJ100X250-100 Is Used
End-Stop Calibration
The 100 mm adjustment screw allows maintenance teams to compensate for tooling wear or machine frame settling without replacing the cylinder, keeping a packaging ram stroke exactly on target.
Product Format Changeover
On a palletising line, operators can quickly reset the push-off stroke for different box sizes by turning the rear screw, eliminating the need to swap out the 100 mm bore actuator.
Clamping with Variable Thickness
When clamping workpieces of varying thickness in a welding fixture, the 100 mm adjust range lets you set the precise clamp closure point, using the full 3927 N push force for a secure hold.
Is the Airtac SCJ100 Standard Cylinder SCJ100X250-100 the Right Cylinder?
Choose this 100 mm bore when your application needs roughly 3900 N of push force at standard shop air. If you can accept a lower force, the 80 mm bore SCJ80X250-100 provides 2513 N push at 0.5 MPa and reduces air consumption. For higher demands, the 125 mm bore SCJ125X250-100 steps up to 6136 N push. This is an adjustable-stroke model; if your stroke is fixed and never needs field adjustment, the standard SC100X250 is a simpler, lower-cost alternative. For a drop-in replacement, match the bore (100 mm), nominal stroke (250 mm), adjust range (-100), port thread (PT), and mounting style. At 250 mm stroke, ensure the rod is guided externally if significant side loads are present, or consider a guided cylinder to prevent rod bending.
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 SCJ100 Standard Cylinder SCJ100X250-100 FAQ
At 0.5 MPa, it generates 3927 N pushing and 3681 N pulling. The maximum operating force at 0.9 MPa is 7068 N push. The adjusting screw does not change the cylinder's force output, only the stroke end position.
Yes, provided the port thread (PT), mounting style, and magnet option match. The SCJ body is slightly longer to house the adjusting mechanism, so verify the available space. The adjustable stroke adds the ability to shorten the 250 mm nominal stroke by up to 100 mm.
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