Airtac SCJ100 Standard Cylinder SCJ100X80-30
The AirTAC Airtac SCJ100 Standard Cylinder SCJ100X80-30 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, 80mm nominal stroke, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Nominal stroke80 mm
- Stroke adjust-30 mm
- Port sizePT1/2
- Rod threadM20×1.5
- CushionAdjustable, 29 mm
About the Airtac SCJ100 Standard Cylinder SCJ100X80-30
The SCJ100X80-30 is a double-acting, single-rod pneumatic cylinder that puts 3927 N of push force at 0.5 MPa into a compact, field-adjustable package. Its rear-cap adjusting screw provides up to 30 mm of stroke-end reduction, letting you dial in the exact stopping position for an 80 mm nominal stroke without swapping the cylinder or adding external hard stops.
With a 25 mm diameter piston rod and PT1/2 ports, this 100 mm bore cylinder handles demanding push applications. The body length A(SCJ) is 245 mm, and the adjustable air cushion decelerates the piston smoothly at end of travel. The maximum push force reaches 7068 N at 0.9 MPa, giving a substantial force margin for clamping, pressing, or ejection tasks.
Airtac SCJ100 Standard Cylinder SCJ100X80-30 Technical Specifications
| Model | Airtac SCJ100 Standard Cylinder SCJ100X80-30 |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø100 mm |
| Nominal stroke | 80 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 SCJ100X80-30
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×80 | 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 SCJ100X80-30 Is Used
Commissioning & Setup
Fine-tune the end position of a 100 mm bore actuator during machine commissioning. The 30 mm adjustment screw lets technicians quickly dial in the exact stroke without re-plumbing or changing the cylinder.
Format Changeover
Adjust the stop point of a pusher or diverter on a packaging line when switching product sizes. The SCJ100X80-30's 3927 N push force at 0.5 MPa handles heavy cartons, and the screw adjustment is tool-free and repeatable.
Wear Compensation
Take up mechanical wear in a clamping fixture or press tool. As tooling faces wear down, the 30 mm adjustable stroke end on this SCJ cylinder compensates to maintain consistent clamp force and part contact.
Is the Airtac SCJ100 Standard Cylinder SCJ100X80-30 the Right Cylinder?
Step up to a 125 mm bore SCJ for 6136 N of push force at 0.5 MPa if the 100 mm bore's 3927 N is marginal. For applications where the stroke is fixed after commissioning, a standard SC100X80 cylinder eliminates the adjusting screw and is slightly shorter. This SCJ100X80-30 is a direct replacement for an existing AirTAC SCJ100X80-30 with PT threads and basic mounting; match the bore, nominal stroke, and 30 mm adjust range exactly. For strokes of 300 mm or more on a 100 mm bore, consider an external guide rail or a guided cylinder to protect the 25 mm rod from side-load bending.
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 SCJ100X80-30 FAQ
At 0.5 MPa, the push force is 3927 N and the pull force is 3681 N. The maximum operating push force at 0.9 MPa is 7068 N. Because this is a single-rod cylinder, the push force is always greater than the pull force due to the rod area on the return side.
A rear-cap screw lets you shorten the stroke end by up to 30 mm from the 80 mm nominal maximum. It sets the physical stop position—it does not regulate speed or air pressure. Choose the SCJ when you need to fine-tune the stroke on the machine; choose a fixed-stroke SC when the stroke is permanently set and you want a slightly shorter body length.
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