Airtac SCJ100 Standard Cylinder SCJ100X275-30
The AirTAC Airtac SCJ100 Standard Cylinder SCJ100X275-30 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, 275mm nominal stroke, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Nominal stroke275 mm
- Stroke adjust-30 mm
- Port sizePT1/2
- Rod threadM20×1.5
- CushionAdjustable, 29 mm
About the Airtac SCJ100 Standard Cylinder SCJ100X275-30
The SCJ100X275-30 is a double-acting, single-rod pneumatic cylinder that puts 3927 N of push force at 0.5 MPa behind a 25 mm diameter piston rod, with a field-adjustable stroke end that can be shortened by up to 30 mm. This lets commissioning engineers fine-tune the stop position on a 100 mm bore platform without swapping the cylinder or adding external hard stops, which is especially useful on heavy tooling where the 29 mm air cushion is already absorbing significant end-of-stroke energy.
At its full 0.9 MPa operating pressure, the cylinder delivers 7068 N of push force, making it suitable for pressing, clamping, and lifting applications in the 7000 N class. The body length A(SCJ) is 245 mm, and the standard PT1/2 ports supply the large air volume this bore demands for consistent cycle times.
Airtac SCJ100 Standard Cylinder SCJ100X275-30 Technical Specifications
| Model | Airtac SCJ100 Standard Cylinder SCJ100X275-30 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø100 mm |
| Nominal stroke | 275 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 SCJ100X275-30
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×275 | 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 SCJ100X275-30 Is Used
Clamp Stroke Fine-Tuning
On a welding fixture, use the 30 mm rear adjusting screw to dial in the exact clamp pressure point after tooling wear or when switching between part variants, without reprogramming the PLC.
Product Stop Adjustment
Deploy as an end-of-line product stop on a packaging conveyor. The adjustable stroke lets operators quickly change the stop position for different box sizes during a format changeover.
Press Tool Depth Control
In a pneumatic press, the SCJ100X275-30 allows the operator to mechanically limit the press ram depth by adjusting the rear screw, providing a hard stop for consistent part insertion depth during pilot runs.
Is the Airtac SCJ100 Standard Cylinder SCJ100X275-30 the Right Cylinder?
For applications needing more force, stepping up to the 125 mm bore SCJ125 delivers 6136 N of push at 0.5 MPa, while a step down to the 80 mm bore SCJ80 provides 2513 N at the same pressure. If your stroke length is fixed and never needs field adjustment, the standard SC100 fixed-stroke cylinder eliminates the rear adjusting screw and is a more economical choice. This SCJ100X275-30 is a direct replacement for any AirTAC SCJ100 cylinder with a 275 mm nominal stroke, 30 mm adjust range, PT1/2 ports, and basic mounting. At a 275 mm stroke, ensure the rod is not subjected to significant side loads; if lateral forces are present, an external guide rail or a guided cylinder will prevent rod bending and premature seal wear.
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 SCJ100X275-30 FAQ
At 0.5 MPa, the push force is 3927 N and the pull force is 3681 N. At the maximum operating pressure of 0.9 MPa, the push force reaches 7068 N. The pull force is lower because the 25 mm piston rod reduces the effective piston area on the return stroke.
Yes, this is a direct dimensional and performance replacement for any AirTAC SCJ100 cylinder with a 275 mm nominal stroke, a 30 mm adjustable range, PT1/2 ports, and basic (no bracket) mounting. Ensure the bore, stroke, adjust range, and port thread match your existing unit.
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